chore(ci): 为工作流声明最小权限 (contents: read)

修复 CodeQL actions/missing-workflow-permissions 告警：ci.yml 未显式声明 GITHUB_TOKEN 权限，默认可写。构建/测试仅需读取仓库内容，故收敛为 contents: read。
build(deps): bump the npm_and_yarn group across 1 directory with 2 updates (#93 )
2026-06-25 11:33:42 +08:00 · 2026-06-01 00:23:23 +08:00 · 2026-05-31 23:37:13 +08:00 · 2026-05-28 13:38:10 +08:00 · 2026-05-27 19:50:50 +08:00 · 2026-05-27 19:33:44 +08:00
271 changed files with 31590 additions and 1574 deletions
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,6 +6,10 @@ on:
  pull_request:
    branches: [main, master]

+# 最小权限：构建/测试仅需读取仓库内容，显式声明以收敛默认的可写令牌。
+permissions:
+  contents: read
+
 jobs:
  backend:
    name: Go Build & Test
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -110,13 +110,21 @@ jobs:
          cp -r web/dist "${ARCHIVE_NAME}/web"
          cp server/config.example.yaml "${ARCHIVE_NAME}/"
          cp deploy/install.sh "${ARCHIVE_NAME}/" 2>/dev/null || true
+          # v2.2+: 随发布包提供 Grafana dashboard 与 nginx.conf 模板
+          if [ -d deploy/grafana ]; then
+            cp -r deploy/grafana "${ARCHIVE_NAME}/grafana"
+          fi
+          cp deploy/nginx.conf "${ARCHIVE_NAME}/nginx.conf" 2>/dev/null || true
          tar czf "${ARCHIVE_NAME}.tar.gz" "${ARCHIVE_NAME}"
+          cp "${ARCHIVE_NAME}.tar.gz" "backupx-${{ matrix.goos }}-${{ matrix.goarch }}.tar.gz"

      - name: Upload to GitHub Release
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ env.VERSION }}
-          files: backupx-${{ env.VERSION }}-${{ matrix.goos }}-${{ matrix.goarch }}.tar.gz
+          files: |
+            backupx-${{ env.VERSION }}-${{ matrix.goos }}-${{ matrix.goarch }}.tar.gz
+            backupx-${{ matrix.goos }}-${{ matrix.goarch }}.tar.gz
          generate_release_notes: true

  # ─── Job 3: Docker 多架构 → Docker Hub ───
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 web/node_modules/
 web/dist/
-server/bin/
+server/bin/
+.claude/
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -0,0 +1,106 @@
+# Contributing to BackupX
+
+感谢你对 BackupX 的关注！本指南介绍如何搭建开发环境并提交贡献。
+Thanks for your interest in contributing to BackupX! This guide covers how to set up your environment and submit changes.
+
+## 开发环境 / Development Setup
+
+### 依赖 / Prerequisites
+
+- **Go** 1.25+（见 `server/go.mod`）
+- **Node.js** 20+（CI 与 Docker 使用 Node 20）
+- **npm** 9+
+
+### 快速开始 / Quick Start
+
+分别在两个终端启动前后端（后端 :8340，前端 Vite HMR）：
+
+```bash
+git clone https://github.com/Awuqing/BackupX.git && cd BackupX
+
+# 终端 1 —— 后端（默认 http://localhost:8340）
+make dev-server
+
+# 终端 2 —— 前端（Vite 热更新，/api 代理到 8340）
+make dev-web
+```
+
+### 构建 / Building
+
+```bash
+make build          # 同时构建后端与前端
+make build-server   # 仅后端 → server/bin/backupx
+make build-web      # 仅前端 → web/dist
+make docker         # 构建 Docker 镜像
+make docker-cn      # 国内镜像源加速构建
+```
+
+> 后端会自动托管 `web/dist`（或 `server.web_root` 指定目录），因此本地裸机部署无需额外的反向代理即可访问控制台。
+
+## 测试 / Testing
+
+提交前请确保测试通过：
+
+```bash
+make test           # 后端 + 前端全部测试
+make test-server    # 仅后端：cd server && go test ./...
+make test-web       # 仅前端：cd web && npm run test（vitest）
+```
+
+新增功能或修复缺陷时，请尽量补充对应测试。
+
+## 提交信息规范 / Commit Messages
+
+本项目采用 **Conventional Commits**，正文用中文撰写：
+
+```
+<type>(<scope>): <subject>
+
+<body>
+```
+
+| type | 说明 |
+|------|------|
+| `feat` | 新功能 |
+| `fix` | 缺陷修复 |
+| `docs` | 文档变更 |
+| `style` | 不影响逻辑的格式调整 |
+| `refactor` | 重构 |
+| `perf` | 性能优化 |
+| `test` | 测试相关 |
+| `chore` | 构建/依赖/工具链 |
+
+示例：
+
+```
+feat(storage): 新增 Wasabi S3 后端支持
+fix(cluster): 修复跨节点恢复的终态处理
+docs: 补充 CONTRIBUTING 指南
+```
+
+## Pull Request 流程
+
+1. **Fork** 仓库并从最新的 `main` 切出特性分支；
+2. **开发**功能或修复，必要时补充测试；
+3. **自测**：确保 `make test` 通过；
+4. **提交**：使用上述 Conventional Commits（中文）；
+5. **推送**并对着 `main` 发起 PR。
+
+### PR 描述建议
+
+- 清晰说明本 PR 做了什么；
+- 对新功能/修复，补充动机与背景；
+- 关联相关 Issue（如 `Closes #62`）；
+- 纯文档 PR 可不附测试。
+
+> 请保持分支基于较新的 `main`：基线过旧的分支容易产生大范围冲突，难以评审与合入。
+
+## 编码规范 / Coding Conventions
+
+- **Go**：所有错误必须处理（禁止 `_ = err`），日志使用项目已有库（`zap`），禁止 `fmt.Println`；提交前执行 `gofmt`。
+- **前端**：遵循项目 ESLint/Prettier/tsconfig 配置，不擅自引入新的 CSS 框架或 UI 库。
+- **包管理**：`web/` 使用 npm，请提交对应的 `package-lock.json`。
+
+## License
+
+向 BackupX 贡献即表示你同意你的贡献以 [Apache License 2.0](LICENSE) 授权。
--- a/README.md
+++ b/README.md
@@ -46,6 +46,9 @@
 | **Multi-Node Cluster** | Master-Agent mode via HTTP long-polling — Agents run tasks locally, upload straight to storage, no reverse connectivity required |
 | **Security** | JWT + bcrypt + AES-256-GCM encrypted config + optional backup encryption + full audit log |
 | **Notifications** | Email / Webhook / Telegram on success or failure |
+| **Observability** | Prometheus `/metrics` endpoint + `/health` + `/ready` probes + SLA breach gauge |
+| **Audit Webhook** | HMAC-SHA256 signed forwarding to SIEM / WORM storage for compliance (SOC2 / GDPR) |
+| **Flow Control** | Per-node bandwidth cap + per-node concurrency limit — tune big/small nodes independently |
 | **Deployment** | Single binary + embedded SQLite, Docker one-click, zero external dependencies |

 ## Quick Start
@@ -59,6 +62,8 @@ curl -LO https://github.com/Awuqing/BackupX/releases/latest/download/backupx-lin
 tar xzf backupx-*.tar.gz && cd backupx-* && sudo ./install.sh
 ```

+For ARM64 hosts, use `backupx-linux-arm64.tar.gz`. The archive contains `backupx`, `web/`, `config.example.yaml`, and `install.sh`; run `install.sh` from the extracted directory.
+
 Open `http://your-server:8340`, create the admin account, then follow the [5-minute Quick Start](https://awuqing.github.io/BackupX/docs/getting-started/quick-start).

 ## Documentation
--- a/README.zh-CN.md
+++ b/README.zh-CN.md
@@ -46,6 +46,9 @@
 | **多节点集群** | Master-Agent 模式，基于 HTTP 长轮询跨多台服务器管理备份。Agent 本地执行任务并直接上传到存储，无需反向连通性 |
 | **安全** | JWT + bcrypt + AES-256-GCM 加密配置 + 可选备份文件加密 + 完整审计日志 |
 | **通知** | 邮件 / Webhook / Telegram，备份成功或失败时自动推送 |
+| **可观测性** | Prometheus `/metrics` 端点 + `/health` + `/ready` 探针 + SLA 违约监控 |
+| **审计外输** | HMAC-SHA256 签名 Webhook，对接 SIEM / WORM 存储满足 SOC2 / GDPR 合规 |
+| **流控** | 节点级带宽限速 + 节点级并发控制，大小节点分别配置，避免小内存 Agent 被挤爆 |
 | **部署** | 单二进制 + 内嵌 SQLite，Docker 一键启动，零外部依赖 |

 ## 快速开始
@@ -59,6 +62,8 @@ curl -LO https://github.com/Awuqing/BackupX/releases/latest/download/backupx-lin
 tar xzf backupx-*.tar.gz && cd backupx-* && sudo ./install.sh
 ```

+ARM64 主机请下载 `backupx-linux-arm64.tar.gz`。预编译包内包含 `backupx`、`web/`、`config.example.yaml` 和 `install.sh`，请在解压后的目录内执行 `install.sh`。
+
 打开 `http://your-server:8340`，创建管理员账户，按 [5 分钟快速开始](https://awuqing.github.io/BackupX/zh-Hans/docs/getting-started/quick-start) 完成首次备份。

 ## 文档
--- a/deploy/docker/entrypoint.sh
+++ b/deploy/docker/entrypoint.sh
@@ -1,6 +1,10 @@
 #!/bin/sh
 set -e

+if [ "${1:-}" = "agent" ]; then
+    exec /app/bin/backupx "$@"
+fi
+
 # Backend listens on internal port 8341, Nginx exposes 8340
 export BACKUPX_SERVER_PORT="${BACKUPX_SERVER_PORT_INTERNAL:-8341}"

--- a/deploy/docker/nginx.conf
+++ b/deploy/docker/nginx.conf
@@ -19,6 +19,25 @@ server {
        proxy_read_timeout 3600s;
    }

+    # Agent one-click install endpoints.
+    # Some external reverse proxies strip the /api prefix before reaching this
+    # container, so /install/ must be proxied here instead of falling through to
+    # the SPA index.html.
+    location /install/ {
+        proxy_pass http://127.0.0.1:8341/install/;
+        proxy_http_version 1.1;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_buffering off;
+        proxy_cache off;
+    }
+
+    location = /health { proxy_pass http://127.0.0.1:8341/health; }
+    location = /ready { proxy_pass http://127.0.0.1:8341/ready; }
+    location = /metrics { proxy_pass http://127.0.0.1:8341/metrics; }
+
    # SPA fallback
    location / {
        try_files $uri $uri/ /index.html;
--- a/deploy/grafana/README.md
+++ b/deploy/grafana/README.md
@@ -0,0 +1,34 @@
+# BackupX Grafana Dashboard
+
+对接 BackupX v2.1+ 暴露的 Prometheus `/metrics` 端点。
+
+## 导入步骤
+
+1. 在 Grafana 配置 Prometheus 数据源指向你的 Prometheus（例如 `http://prometheus:9090`）
+2. 在 Prometheus 配置抓取 BackupX：
+
+```yaml
+scrape_configs:
+  - job_name: 'backupx'
+    scrape_interval: 30s
+    static_configs:
+      - targets: ['backupx-master:8340']
+```
+
+3. Grafana → Dashboards → Import → 上传 `backupx-dashboard.json` → 选 Prometheus 数据源 → Import
+
+## 面板内容
+
+- 当前运行任务数 / SLA 违约数 / 在线节点 / 24h 成功率 / 应用版本
+- 任务执行速率（按 success/failed 堆叠）
+- 任务耗时 P50/P95/P99（按任务类型）
+- 任务产出字节速率
+- 存储目标用量 TopN 柱状图
+- 节点在线状态表（红/绿标色）
+- 验证 / 恢复 / 复制的成功率时间线
+
+## 自定义建议
+
+- 将 `backupx_sla_breach_tasks > 0` 配为 AlertManager 告警
+- `sum(backupx_node_online) < N` 触发集群容量告警（N 为你集群的最少节点数）
+- P99 任务耗时突变可用于发现慢任务和资源压力
--- a/deploy/grafana/backupx-dashboard.json
+++ b/deploy/grafana/backupx-dashboard.json
@@ -0,0 +1,193 @@
+{
+  "annotations": {
+    "list": [
+      {
+        "builtIn": 1,
+        "datasource": {"type": "grafana", "uid": "-- Grafana --"},
+        "enable": true,
+        "hide": true,
+        "iconColor": "rgba(0, 211, 255, 1)",
+        "name": "Annotations & Alerts",
+        "type": "dashboard"
+      }
+    ]
+  },
+  "description": "BackupX v2.1+ 核心指标面板。对接 /metrics 端点，抓取周期建议 30s（与服务端 Gauge collector 同步）。",
+  "editable": true,
+  "fiscalYearStartMonth": 0,
+  "graphTooltip": 1,
+  "id": null,
+  "links": [
+    {
+      "title": "BackupX 文档",
+      "url": "https://awuqing.github.io/BackupX/",
+      "type": "link",
+      "targetBlank": true
+    }
+  ],
+  "liveNow": false,
+  "panels": [
+    {
+      "type": "stat",
+      "title": "正在运行的任务",
+      "gridPos": {"h": 4, "w": 4, "x": 0, "y": 0},
+      "datasource": {"type": "prometheus", "uid": "${DS_PROMETHEUS}"},
+      "targets": [{"expr": "backupx_task_running", "refId": "A"}],
+      "fieldConfig": {
+        "defaults": {
+          "unit": "short",
+          "thresholds": {"mode": "absolute", "steps": [{"color": "green", "value": null}, {"color": "yellow", "value": 5}]}
+        }
+      },
+      "options": {"colorMode": "value", "graphMode": "area", "textMode": "auto"}
+    },
+    {
+      "type": "stat",
+      "title": "SLA 违约任务数",
+      "gridPos": {"h": 4, "w": 4, "x": 4, "y": 0},
+      "datasource": {"type": "prometheus", "uid": "${DS_PROMETHEUS}"},
+      "targets": [{"expr": "backupx_sla_breach_tasks", "refId": "A"}],
+      "fieldConfig": {
+        "defaults": {
+          "unit": "short",
+          "thresholds": {"mode": "absolute", "steps": [{"color": "green", "value": null}, {"color": "red", "value": 1}]}
+        }
+      }
+    },
+    {
+      "type": "stat",
+      "title": "在线节点",
+      "gridPos": {"h": 4, "w": 4, "x": 8, "y": 0},
+      "datasource": {"type": "prometheus", "uid": "${DS_PROMETHEUS}"},
+      "targets": [{"expr": "sum(backupx_node_online)", "refId": "A"}],
+      "fieldConfig": {
+        "defaults": {"unit": "short", "color": {"mode": "thresholds"}, "thresholds": {"steps": [{"color": "red", "value": null}, {"color": "green", "value": 1}]}}
+      }
+    },
+    {
+      "type": "stat",
+      "title": "24h 任务成功率",
+      "gridPos": {"h": 4, "w": 6, "x": 12, "y": 0},
+      "datasource": {"type": "prometheus", "uid": "${DS_PROMETHEUS}"},
+      "targets": [{
+        "expr": "sum(rate(backupx_task_run_total{status=\"success\"}[24h])) / sum(rate(backupx_task_run_total[24h])) * 100",
+        "refId": "A"
+      }],
+      "fieldConfig": {
+        "defaults": {
+          "unit": "percent", "decimals": 2,
+          "thresholds": {"mode": "absolute", "steps": [{"color": "red", "value": null}, {"color": "yellow", "value": 95}, {"color": "green", "value": 99}]}
+        }
+      }
+    },
+    {
+      "type": "stat",
+      "title": "应用版本",
+      "gridPos": {"h": 4, "w": 6, "x": 18, "y": 0},
+      "datasource": {"type": "prometheus", "uid": "${DS_PROMETHEUS}"},
+      "targets": [{"expr": "backupx_app_info", "refId": "A", "format": "table", "instant": true}],
+      "options": {"textMode": "value_and_name", "reduceOptions": {"calcs": ["last"], "fields": "/^version$/"}}
+    },
+    {
+      "type": "timeseries",
+      "title": "任务执行速率（按状态）",
+      "gridPos": {"h": 8, "w": 12, "x": 0, "y": 4},
+      "datasource": {"type": "prometheus", "uid": "${DS_PROMETHEUS}"},
+      "targets": [{
+        "expr": "sum by (status) (rate(backupx_task_run_total[5m]))",
+        "refId": "A",
+        "legendFormat": "{{status}}"
+      }],
+      "fieldConfig": {
+        "defaults": {
+          "unit": "ops",
+          "custom": {"drawStyle": "line", "lineInterpolation": "smooth", "fillOpacity": 10, "stacking": {"mode": "normal"}}
+        },
+        "overrides": [
+          {"matcher": {"id": "byName", "options": "success"}, "properties": [{"id": "color", "value": {"mode": "fixed", "fixedColor": "green"}}]},
+          {"matcher": {"id": "byName", "options": "failed"}, "properties": [{"id": "color", "value": {"mode": "fixed", "fixedColor": "red"}}]}
+        ]
+      }
+    },
+    {
+      "type": "timeseries",
+      "title": "任务耗时 P50 / P95 / P99",
+      "gridPos": {"h": 8, "w": 12, "x": 12, "y": 4},
+      "datasource": {"type": "prometheus", "uid": "${DS_PROMETHEUS}"},
+      "targets": [
+        {"expr": "histogram_quantile(0.50, sum(rate(backupx_task_run_duration_seconds_bucket[10m])) by (le, task_type))", "refId": "A", "legendFormat": "P50 {{task_type}}"},
+        {"expr": "histogram_quantile(0.95, sum(rate(backupx_task_run_duration_seconds_bucket[10m])) by (le, task_type))", "refId": "B", "legendFormat": "P95 {{task_type}}"},
+        {"expr": "histogram_quantile(0.99, sum(rate(backupx_task_run_duration_seconds_bucket[10m])) by (le, task_type))", "refId": "C", "legendFormat": "P99 {{task_type}}"}
+      ],
+      "fieldConfig": {"defaults": {"unit": "s"}}
+    },
+    {
+      "type": "timeseries",
+      "title": "任务产出字节速率",
+      "gridPos": {"h": 8, "w": 12, "x": 0, "y": 12},
+      "datasource": {"type": "prometheus", "uid": "${DS_PROMETHEUS}"},
+      "targets": [{"expr": "sum by (task_type) (rate(backupx_task_bytes_total[5m]))", "refId": "A", "legendFormat": "{{task_type}}"}],
+      "fieldConfig": {"defaults": {"unit": "Bps"}}
+    },
+    {
+      "type": "bargauge",
+      "title": "存储目标用量 TopN",
+      "gridPos": {"h": 8, "w": 12, "x": 12, "y": 12},
+      "datasource": {"type": "prometheus", "uid": "${DS_PROMETHEUS}"},
+      "targets": [{"expr": "topk(10, backupx_storage_used_bytes)", "refId": "A", "legendFormat": "{{target_name}} ({{target_type}})"}],
+      "fieldConfig": {"defaults": {"unit": "bytes"}},
+      "options": {"orientation": "horizontal", "displayMode": "gradient"}
+    },
+    {
+      "type": "table",
+      "title": "节点在线状态",
+      "gridPos": {"h": 8, "w": 12, "x": 0, "y": 20},
+      "datasource": {"type": "prometheus", "uid": "${DS_PROMETHEUS}"},
+      "targets": [{"expr": "backupx_node_online", "refId": "A", "format": "table", "instant": true}],
+      "transformations": [
+        {"id": "organize", "options": {"excludeByName": {"Time": true, "__name__": true, "job": true, "instance": true}, "indexByName": {"node_name": 0, "role": 1, "Value": 2}, "renameByName": {"Value": "online"}}}
+      ],
+      "fieldConfig": {
+        "overrides": [{
+          "matcher": {"id": "byName", "options": "online"},
+          "properties": [{"id": "mappings", "value": [{"type": "value", "options": {"0": {"text": "离线", "color": "red"}, "1": {"text": "在线", "color": "green"}}}]}]
+        }]
+      }
+    },
+    {
+      "type": "timeseries",
+      "title": "验证 / 恢复 / 复制成功率",
+      "gridPos": {"h": 8, "w": 12, "x": 12, "y": 20},
+      "datasource": {"type": "prometheus", "uid": "${DS_PROMETHEUS}"},
+      "targets": [
+        {"expr": "sum by (status) (rate(backupx_verify_run_total[15m]))", "refId": "A", "legendFormat": "verify {{status}}"},
+        {"expr": "sum by (status) (rate(backupx_restore_run_total[15m]))", "refId": "B", "legendFormat": "restore {{status}}"},
+        {"expr": "sum by (status) (rate(backupx_replication_run_total[15m]))", "refId": "C", "legendFormat": "replication {{status}}"}
+      ],
+      "fieldConfig": {"defaults": {"unit": "ops"}}
+    }
+  ],
+  "refresh": "30s",
+  "schemaVersion": 39,
+  "tags": ["backupx", "backup", "sre"],
+  "templating": {
+    "list": [
+      {
+        "current": {"selected": false, "text": "Prometheus", "value": "Prometheus"},
+        "label": "Datasource",
+        "name": "DS_PROMETHEUS",
+        "query": "prometheus",
+        "refresh": 1,
+        "regex": "",
+        "type": "datasource"
+      }
+    ]
+  },
+  "time": {"from": "now-6h", "to": "now"},
+  "timepicker": {},
+  "timezone": "",
+  "title": "BackupX Overview",
+  "uid": "backupx-overview",
+  "version": 1,
+  "weekStart": ""
+}
--- a/deploy/install.sh
+++ b/deploy/install.sh
@@ -1,17 +1,25 @@
 #!/bin/sh
 set -eu

-PROJECT_ROOT=$(CDPATH= cd -- "$(dirname -- "$0")/.." && pwd)
+SCRIPT_DIR=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)
+PROJECT_ROOT=$(CDPATH= cd -- "$SCRIPT_DIR/.." && pwd)
 PREFIX="${PREFIX:-/opt/backupx}"
 ETC_DIR="${ETC_DIR:-/etc/backupx}"
 SERVICE_NAME="backupx"
 APP_USER="backupx"
 APP_GROUP="backupx"
-BIN_SOURCE="${BIN_SOURCE:-$PROJECT_ROOT/server/backupx}"
-WEB_SOURCE="${WEB_SOURCE:-$PROJECT_ROOT/web/dist}"
-CONFIG_TEMPLATE="${CONFIG_TEMPLATE:-$PROJECT_ROOT/server/config.example.yaml}"
+if [ -f "$SCRIPT_DIR/backupx" ] && [ -d "$SCRIPT_DIR/web" ]; then
+    BIN_SOURCE="${BIN_SOURCE:-$SCRIPT_DIR/backupx}"
+    WEB_SOURCE="${WEB_SOURCE:-$SCRIPT_DIR/web}"
+    CONFIG_TEMPLATE="${CONFIG_TEMPLATE:-$SCRIPT_DIR/config.example.yaml}"
+    NGINX_SOURCE="${NGINX_SOURCE:-$SCRIPT_DIR/nginx.conf}"
+else
+    BIN_SOURCE="${BIN_SOURCE:-$PROJECT_ROOT/server/backupx}"
+    WEB_SOURCE="${WEB_SOURCE:-$PROJECT_ROOT/web/dist}"
+    CONFIG_TEMPLATE="${CONFIG_TEMPLATE:-$PROJECT_ROOT/server/config.example.yaml}"
+    NGINX_SOURCE="${NGINX_SOURCE:-$PROJECT_ROOT/deploy/nginx.conf}"
+fi
 SERVICE_SOURCE="${SERVICE_SOURCE:-$PROJECT_ROOT/deploy/backupx.service}"
-NGINX_SOURCE="${NGINX_SOURCE:-$PROJECT_ROOT/deploy/nginx.conf}"

 if [ "$(id -u)" -ne 0 ]; then
    echo "请使用 root 或 sudo 执行安装脚本。" >&2
@@ -20,13 +28,20 @@ fi

 if [ ! -f "$BIN_SOURCE" ]; then
    echo "未找到后端二进制：$BIN_SOURCE" >&2
-    echo "请先执行：cd \"$PROJECT_ROOT/server\" && go build -o backupx ./cmd/backupx" >&2
+    echo "源码树安装请先执行：cd \"$PROJECT_ROOT/server\" && go build -o backupx ./cmd/backupx" >&2
+    echo "发布包安装请确认当前目录包含 ./backupx、./web 和 ./install.sh。" >&2
    exit 1
 fi

 if [ ! -d "$WEB_SOURCE" ]; then
    echo "未找到前端构建产物：$WEB_SOURCE" >&2
-    echo "请先执行：cd \"$PROJECT_ROOT/web\" && npm run build" >&2
+    echo "源码树安装请先执行：cd \"$PROJECT_ROOT/web\" && npm run build" >&2
+    echo "发布包安装请确认当前目录包含 ./web。" >&2
+    exit 1
+fi
+
+if [ ! -f "$CONFIG_TEMPLATE" ]; then
+    echo "未找到配置模板：$CONFIG_TEMPLATE" >&2
    exit 1
 fi

@@ -44,14 +59,40 @@ cp -R "$WEB_SOURCE/." "$PREFIX/web/"
 chown -R "$APP_USER:$APP_GROUP" "$PREFIX"

 if [ ! -f "$ETC_DIR/config.yaml" ]; then
-    install -m 0640 "$CONFIG_TEMPLATE" "$ETC_DIR/config.yaml"
+    install -o "$APP_USER" -g "$APP_GROUP" -m 0640 "$CONFIG_TEMPLATE" "$ETC_DIR/config.yaml"
 fi
+# 确保服务账户能读取配置：历史版本曾以 root:root 0640 安装配置，
+# 导致以 backupx 身份运行的服务因无权读取配置而启动失败（exit 1）。
+chown "$APP_USER:$APP_GROUP" "$ETC_DIR/config.yaml"

-install -m 0644 "$SERVICE_SOURCE" "/etc/systemd/system/$SERVICE_NAME.service"
+if [ -f "$SERVICE_SOURCE" ]; then
+    install -m 0644 "$SERVICE_SOURCE" "/etc/systemd/system/$SERVICE_NAME.service"
+else
+    cat > "/etc/systemd/system/$SERVICE_NAME.service" <<UNIT
+[Unit]
+Description=BackupX API Service
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=simple
+User=$APP_USER
+Group=$APP_GROUP
+WorkingDirectory=$PREFIX
+ExecStart=$PREFIX/bin/backupx -config $ETC_DIR/config.yaml
+Restart=on-failure
+RestartSec=5
+NoNewPrivileges=true
+LimitNOFILE=65535
+
+[Install]
+WantedBy=multi-user.target
+UNIT
+fi
 systemctl daemon-reload
 systemctl enable --now "$SERVICE_NAME"

-if [ -d "/etc/nginx/conf.d" ]; then
+if [ -d "/etc/nginx/conf.d" ] && [ -f "$NGINX_SOURCE" ]; then
    install -m 0644 "$NGINX_SOURCE" "/etc/nginx/conf.d/$SERVICE_NAME.conf"
    if command -v nginx >/dev/null 2>&1; then
        nginx -t
@@ -67,6 +108,14 @@ cat <<MESSAGE
 - 配置文件：$ETC_DIR/config.yaml
 - systemd 服务：/etc/systemd/system/$SERVICE_NAME.service

+Web 控制台已由后端直接托管，无需额外的 nginx 反向代理即可访问：
+  http://<本机IP>:8340
+
+（如已安装 nginx，脚本会自动写入反向代理配置，可继续用 80 端口访问。）
+
+排查：若服务未监听端口，请查看日志：
+  journalctl -u "$SERVICE_NAME" -n 50 --no-pager
+
 如需修改监听地址、数据库路径或日志级别，请编辑 "$ETC_DIR/config.yaml" 后执行：
  systemctl restart "$SERVICE_NAME"
 MESSAGE
--- a/deploy/nginx.conf
+++ b/deploy/nginx.conf
@@ -18,6 +18,22 @@ server {
        proxy_read_timeout 3600s;
    }

+    # Agent 一键安装脚本路径（兼容 v2.0 及之前生成的命令）。
+    # v2.1+ 新生成的命令走 /api/install/... 自动命中上面的 /api/ 代理。
+    location /install/ {
+        proxy_pass http://127.0.0.1:8340/install/;
+        proxy_http_version 1.1;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+
+    # 健康检查端点同样不走 SPA fallback。
+    location = /health { proxy_pass http://127.0.0.1:8340/health; }
+    location = /ready  { proxy_pass http://127.0.0.1:8340/ready; }
+    location = /metrics { proxy_pass http://127.0.0.1:8340/metrics; }
+
    location / {
        try_files $uri $uri/ /index.html;
    }
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -22,6 +22,8 @@ services:
      # - /home/user/data:/mnt/data:ro
    environment:
      - TZ=Asia/Shanghai
+      # 远程 Agent 需要通过公网或可路由地址连接 Master 时，取消注释并改成真实 URL：
+      # - BACKUPX_SERVER_EXTERNAL_URL=https://backup.example.com
      # 通过 BACKUPX_ 前缀环境变量覆盖配置：
      # - BACKUPX_LOG_LEVEL=debug
      # - BACKUPX_BACKUP_MAX_CONCURRENT=4
--- a/docs-site/docs/deployment/bare-metal.md
+++ b/docs-site/docs/deployment/bare-metal.md
@@ -25,6 +25,19 @@ The installer performs these steps automatically:
 4. Installs `backupx.service` (systemd), enabled at boot
 5. (Optional) installs an Nginx site file — see [Nginx Reverse Proxy](./nginx)

+For multi-node clusters, edit `/etc/backupx/config.yaml` after installation and set the Master URL that remote Agents can reach:
+
+```yaml
+server:
+  external_url: "https://backup.example.com"
+```
+
+Restart BackupX after changing it:
+
+```bash
+sudo systemctl restart backupx
+```
+
 ## From source

 ```bash
--- a/docs-site/docs/deployment/configuration.md
+++ b/docs-site/docs/deployment/configuration.md
@@ -15,13 +15,14 @@ server:
  host: "0.0.0.0"             # BACKUPX_SERVER_HOST
  port: 8340                  # BACKUPX_SERVER_PORT
  mode: "release"             # release | debug
+  external_url: ""            # BACKUPX_SERVER_EXTERNAL_URL — public Master URL for Agent install scripts

 database:
  path: "./data/backupx.db"   # BACKUPX_DATABASE_PATH — embedded SQLite

 security:
  jwt_secret: ""              # BACKUPX_SECURITY_JWT_SECRET — auto-generated if empty
-  jwt_expires_in: "24h"
+  jwt_expire: "24h"           # BACKUPX_SECURITY_JWT_EXPIRE
  encryption_key: ""          # AES-256-GCM key for storage config encryption

 backup:
@@ -46,7 +47,20 @@ The environment wins when both file and env are set. All dot-paths become unders
 | Config key | Env variable |
 |------------|--------------|
 | `server.port` | `BACKUPX_SERVER_PORT` |
+| `server.external_url` | `BACKUPX_SERVER_EXTERNAL_URL` |
+| `security.jwt_expire` | `BACKUPX_SECURITY_JWT_EXPIRE` |
 | `log.level` | `BACKUPX_LOG_LEVEL` |
 | `backup.max_concurrent` | `BACKUPX_BACKUP_MAX_CONCURRENT` |
 | `backup.temp_dir` | `BACKUPX_BACKUP_TEMP_DIR` |
 | `backup.bandwidth_limit` | `BACKUPX_BACKUP_BANDWIDTH_LIMIT` |
+
+## Master external URL
+
+Set `server.external_url` when BackupX is behind Docker, Nginx, a load balancer, or any reverse proxy whose internal Host is not reachable by remote Agents:
+
+```yaml
+server:
+  external_url: "https://backup.example.com"
+```
+
+This value is used when BackupX renders one-click Agent install scripts and docker-compose snippets. It must be reachable from every Agent host. Leave it empty only when `X-Forwarded-Proto` / `X-Forwarded-Host` are reliable and point to the same URL that Agents can access.
--- a/docs-site/docs/deployment/docker.md
+++ b/docs-site/docs/deployment/docker.md
@@ -25,6 +25,8 @@ services:
      - /etc/nginx:/mnt/nginx-conf:ro
    environment:
      - TZ=Asia/Shanghai
+      # Required when remote Agents must connect through a public or routed URL:
+      # - BACKUPX_SERVER_EXTERNAL_URL=https://backup.example.com
      - BACKUPX_LOG_LEVEL=info
      - BACKUPX_BACKUP_MAX_CONCURRENT=2

@@ -42,6 +44,17 @@ docker compose up -d

 To back up files from the host, mount them into the container. When creating a file-type task in the web UI, point the source path at the mount location (e.g. `/mnt/www`). Make sure the directory is visible inside the container.

+## Multi-node clusters
+
+When deploying Agents on other machines, set `BACKUPX_SERVER_EXTERNAL_URL` on the Master container to the URL that those Agents can reach:
+
+```yaml
+environment:
+  - BACKUPX_SERVER_EXTERNAL_URL=https://backup.example.com
+```
+
+Use an HTTPS URL if Agents cross untrusted networks. The generated one-click install scripts and docker-compose snippets use this value as `BACKUPX_AGENT_MASTER`.
+
 ## Environment variables

 All configuration keys can be overridden with the `BACKUPX_` prefix:
--- a/docs-site/docs/features/backup-types.md
+++ b/docs-site/docs/features/backup-types.md
@@ -8,6 +8,8 @@ description: File, MySQL, PostgreSQL, SQLite and SAP HANA — what they back up

 BackupX supports five built-in backup types. Type determines which runner executes the job.

+When a task is routed to a remote Agent, the source tools and paths are resolved on that Agent host. Multi-target uploads are still tracked per storage target; if at least one target succeeds, the backup record is marked successful and the per-target result table shows partial failures.
+
 ## File / Directory

 Tars (and optionally gzips) one or more filesystem paths.
--- a/docs-site/docs/features/multi-node.md
+++ b/docs-site/docs/features/multi-node.md
@@ -28,54 +28,70 @@ BackupX supports Master-Agent mode: backup tasks can be routed to specific nodes

 ## Walkthrough

-### 1. Create a node on Master
+### 0. Set the Master URL for production clusters

-Web Console → **Node Management** → **Add Node**. A 64-byte hex token is shown **once** — keep it safe.
+Before generating Agent install commands, make sure the Master URL shown to Agents is stable and reachable from every target host.

-### 2. Deploy the Agent on a remote host
+If BackupX runs behind Docker, Nginx, a load balancer, or an outer reverse proxy, configure `server.external_url` or `BACKUPX_SERVER_EXTERNAL_URL` on the Master:

-Upload the BackupX binary (same file as Master) to the target host, then start the Agent:
-
-**Option A: CLI flags**
-
-```bash
-backupx agent --master http://master.example.com:8340 --token <token>
+```yaml title="config.yaml"
+server:
+  external_url: "https://backup.example.com"
 ```

-**Option B: config file**
+This URL is baked into systemd units, foreground commands, and docker-compose snippets. If it is wrong, Agents will install successfully but stay offline because they keep polling an internal or browser-only address.

-```yaml title="/etc/backupx/agent.yaml"
-master: http://master.example.com:8340
-token: <token>
-heartbeatInterval: 15s
-pollInterval: 5s
-tempDir: /var/lib/backupx-agent
-```
+### 1. Open the install wizard

-```bash
-backupx agent --config /etc/backupx/agent.yaml
-```
+In the Web Console → **Node Management** → **Add Node**. You'll see a three-step wizard.

-**Option C: environment variables** (Docker / systemd friendly)
+- **Step 1 — Node info.** Give the node a name, or switch to batch mode and paste multiple names (one per line, max 50).
+- **Step 2 — Deploy options.** Pick install mode (`systemd` recommended, `docker`, or `foreground` for debugging), architecture (auto-detect by default), agent version (defaults to the master's version), TTL for the install link (5 min / 15 min / 1 h / 24 h), and download source (`github` direct, or the `ghproxy` mirror for mainland China).
+- **Step 3 — Copy the command.** A one-line install command is shown with a live countdown. Click copy, paste into the target machine, and run with root privileges. The default command embeds the rendered installer, so the target host does not need to fetch `/api/install/:token` through your reverse proxy. The public install URL is still available as a fallback.

-```bash
-BACKUPX_AGENT_MASTER=http://master.example.com:8340 \
-BACKUPX_AGENT_TOKEN=<token> \
-backupx agent
-```
+### 2. One-line install on the target host

-Once connected, the node shows as **online** in the list.
+Use the command generated by the Web Console. It writes the installer to a temporary file, validates the `BACKUPX_AGENT_INSTALL_V1` marker, then runs it with root privileges.

-### 3. Route a task to the node
+The script runs automatically and:
+
+1. Detects OS and architecture (`uname -m`)
+2. Downloads the matching `backupx` binary from GitHub Release (or the ghproxy mirror)
+3. Installs to `/opt/backupx-agent` and creates a `backupx` system user
+4. Writes `/etc/systemd/system/backupx-agent.service` with the token baked into environment variables
+5. Runs `systemctl enable --now backupx-agent`
+6. Polls `/api/v1/agent/self` until the master confirms `status: online` (up to 30 s)
+
+Docker mode uses the same `BACKUPX_AGENT_MASTER`, `BACKUPX_AGENT_TOKEN`, and `BACKUPX_AGENT_TEMP_DIR=/var/lib/backupx-agent/tmp` environment contract. After starting the container, the installer also probes `/api/v1/agent/self`; if the node does not come online, it prints `docker ps` and `docker logs --tail=100 backupx-agent` diagnostics before exiting non-zero.
+
+If you choose the URL-based fallback command and `curl` prints HTML or the shell reports `Syntax error: newline unexpected`, the install URL is being served by the web console instead of the backend. Ensure either `/api/install/` or `/install/` is forwarded to the BackupX backend, or use the embedded command generated by the console.
+
+Reruns are idempotent — to upgrade or re-provision, simply generate a new install command and run it again. The one-time install link expires after its TTL or after first consumption, whichever is sooner.
+
+### 3. Rotate agent tokens at any time
+
+Go to the node's action menu (︙) → **Rotate Token**. The new token is shown once and the old token remains valid for 24 h, allowing rolling restarts without downtime. After 24 h, the old token is rejected.
+
+### 4. Batch deployment
+
+In Step 1 choose "Batch" and paste node names (one per line, max 50). Step 3 shows a table with one command per node plus a **Download .sh** button that bundles all commands into a shell script, convenient for SSH loops or Ansible tasks.
+
+### 5. Route a task to the node

 In the **Backup Tasks** page, pick the target node when creating the task. When the task runs:

 - Local (`nodeId=0`) → Master executes in-process
 - Remote node → Master enqueues the command → Agent claims → Agent runs locally → uploads → reports back

+The node table shows the Agent health and command queue state: pending/dispatched depth, running long commands, timeouts, oldest active command age, and the latest Agent-side error. The same queue depth, running-command, and timeout snapshots are exported as Prometheus metrics:
+
+- `backupx_agent_command_queue_depth`
+- `backupx_agent_command_running`
+- `backupx_agent_command_timeout_total`
+
 ## Known limitations

- **Encrypted backups don't work via Agent** — the Agent doesn't hold Master's AES-256 key. Tasks with `encrypt: true` will fail if routed to an Agent
+- **Encrypted backups are Master-only** — the Agent doesn't hold Master's AES-256 key. Creating or updating a task with `encrypt: true` and a remote node or node pool is rejected up front
 - **Directory browser timeout** — remote dir listing is a synchronous RPC through the queue (15s default)
 - **Dispatched command timeout** — claimed-but-unfinished commands are marked `timeout` after 10 minutes

--- a/docs-site/docs/getting-started/quick-start.md
+++ b/docs-site/docs/getting-started/quick-start.md
@@ -42,6 +42,8 @@ Go to **Backup Tasks → New**. Three steps:
 2. **Source** — paths for file backup (multi-source supported), or connection info for databases
 3. **Storage & policy** — pick target(s), compression, retention days, encryption on/off

+For Agent-routed tasks, encryption must stay off because the Agent never receives the Master's encryption key. BackupX rejects remote-node or node-pool tasks with encryption enabled during create/update.
+
 Save, then click **Run Now** to trigger a test. Live logs stream on the **Backup Records** page.

 :::note
--- a/docs-site/docusaurus.config.ts
+++ b/docs-site/docusaurus.config.ts
@@ -6,7 +6,7 @@ import type * as Preset from '@docusaurus/preset-classic';
 // https://awuqing.github.io/BackupX/
 const config: Config = {
  title: 'BackupX',
-  tagline: 'Self-hosted server backup management — one binary, one command',
+  tagline: 'Self-hosted backup orchestration for servers, databases, storage targets and remote agents',
  favicon: 'img/favicon.ico',

  future: {
@@ -76,6 +76,16 @@ const config: Config = {
          label: 'Downloads',
          position: 'left',
        },
+        {
+          to: '/community',
+          label: 'Community',
+          position: 'left',
+        },
+        {
+          to: '/sponsors',
+          label: 'Sponsors',
+          position: 'left',
+        },
        {
          type: 'localeDropdown',
          position: 'right',
@@ -115,6 +125,22 @@ const config: Config = {
            {label: 'Issues', href: 'https://github.com/Awuqing/BackupX/issues'},
          ],
        },
+        {
+          title: 'Community',
+          items: [
+            {label: 'Contributors', href: 'https://github.com/Awuqing/BackupX/graphs/contributors'},
+            {label: 'Pull Requests', href: 'https://github.com/Awuqing/BackupX/pulls'},
+            {label: 'Sponsor', to: '/sponsors'},
+          ],
+        },
+        {
+          title: 'Sponsors',
+          items: [
+            {label: 'Sponsor BackupX', href: 'https://github.com/sponsors/Awuqing'},
+            {label: 'Partnership', href: 'https://github.com/Awuqing/BackupX/issues/new/choose'},
+            {label: 'Sponsor tiers', to: '/sponsors'},
+          ],
+        },
      ],
      copyright: `Copyright © ${new Date().getFullYear()} BackupX · Apache License 2.0`,
    },
--- a/docs-site/i18n/zh-CN/code.json
+++ b/docs-site/i18n/zh-CN/code.json
@@ -1,22 +1,22 @@
 {
  "home.badge": {
-    "message": "开源 · v1.6.0",
+    "message": "开源备份控制平面 · v2.2.1",
    "description": "Version badge on the hero"
  },
  "home.title.part1": {
-    "message": "为每一台服务器提供",
+    "message": "面向自托管服务器的",
    "description": "Hero title, first line"
  },
  "home.title.part2": {
-    "message": "自托管备份管理。",
+    "message": "备份编排平台。",
    "description": "Hero title accent second line"
  },
  "home.tagline": {
-    "message": "一个二进制，一条命令。文件 / 数据库 / SAP HANA 备份直送 70+ 存储后端。",
+    "message": "在一个清爽控制台中管理文件、数据库、SAP HANA 和远程节点备份。控制平面自己掌握，存储后端灵活选择。",
    "description": "Tagline on the home page"
  },
  "home.pageTitle": {
-    "message": "自托管备份管理",
+    "message": "面向自托管服务器的备份编排",
    "description": "Page <title> element on the home page"
  },
  "home.getStarted": {
@@ -28,13 +28,26 @@
    "description": "Hero metric label: storage backends"
  },
  "home.metric.backupTypes": {
-    "message": "备份类型",
+    "message": "远程执行",
    "description": "Hero metric label: backup types"
  },
  "home.metric.license": {
    "message": "开源协议",
    "description": "Hero metric label: license"
  },
+  "home.visual.eyebrow": {"message": "BackupX 控制台"},
+  "home.visual.title": {"message": "运维概览"},
+  "home.visual.status": {"message": "健康"},
+  "home.visual.success": {"message": "成功率"},
+  "home.visual.nodes": {"message": "活跃节点"},
+  "home.visual.targets": {"message": "存储目标"},
+  "home.visual.row1.title": {"message": "PostgreSQL 夜间备份"},
+  "home.visual.row1.desc": {"message": "加密归档已上传至 S3"},
+  "home.visual.row2.title": {"message": "SAP HANA 快照"},
+  "home.visual.row2.desc": {"message": "正在 agent-shanghai-02 上运行"},
+  "home.visual.row3.title": {"message": "保留策略清理"},
+  "home.visual.row3.desc": {"message": "下一次执行在 4 小时后"},
+  "home.command.title": {"message": "使用 Docker 启动"},

  "section.features.tag": {
    "message": "核心能力",
@@ -78,5 +91,70 @@
  "showcase.storage.desc": {"message": "阿里云 OSS、腾讯云 COS、S3、Google Drive、WebDAV — 加上每一种 rclone 后端。测试连接、收藏、查看实时容量。"},
  "showcase.nodes.title": {"message": "几分钟搭起 Master-Agent"},
  "showcase.nodes.desc": {"message": "创建节点、复制令牌、在任意远程主机启动 Agent。路由到节点的任务在本地执行并直接上传到存储 — 无需反向连通性。"},
-  "showcase.cta": {"message": "开始阅读文档"}
+  "showcase.cta": {"message": "开始阅读文档"},
+
+  "community.tag": {"message": "社区"},
+  "community.pageTitle": {"message": "社区、赞助商与贡献者"},
+  "community.pageDescription": {"message": "赞助 BackupX，了解贡献者，并找到务实的参与方式。"},
+  "community.title": {"message": "开放协作，面向长期运维"},
+  "community.subtitle": {"message": "备份软件的信任来自透明发布、真实部署反馈，以及足够务实的贡献路径。"},
+  "community.sponsor.kicker": {"message": "赞助商"},
+  "community.sponsor.wallTitle": {"message": "赞助商"},
+  "community.sponsor.title": {"message": "支持你依赖的备份基础设施"},
+  "community.sponsor.cta": {"message": "赞助 BackupX"},
+  "community.sponsor.openSlot": {"message": "赞助席位开放"},
+  "community.sponsor.logo.project": {"message": "项目赞助"},
+  "community.sponsor.logo.cloud": {"message": "云服务伙伴"},
+  "community.sponsor.logo.object": {"message": "对象存储"},
+  "community.sponsor.logo.cdn": {"message": "CDN 伙伴"},
+  "community.sponsor.logo.database": {"message": "数据库伙伴"},
+  "community.sponsor.logo.security": {"message": "安全审计"},
+  "community.sponsor.logo.agent": {"message": "远程节点实验室"},
+  "community.sponsor.logo.docs": {"message": "文档赞助"},
+  "community.sponsor.logo.release": {"message": "发布赞助"},
+  "community.sponsor.logo.s3": {"message": "S3 兼容"},
+  "community.sponsor.logo.webdav": {"message": "WebDAV 伙伴"},
+  "community.sponsor.logo.sftp": {"message": "SFTP 伙伴"},
+  "community.sponsor.logo.docker": {"message": "容器伙伴"},
+  "community.sponsor.logo.mirror": {"message": "镜像伙伴"},
+  "community.sponsor.logo.restore": {"message": "恢复演练"},
+  "community.sponsor.logo.qa": {"message": "测试实验室"},
+  "community.sponsor.logo.oss": {"message": "开源支持"},
+  "community.sponsor.logo.open": {"message": "赞助席位开放"},
+  "community.sponsor.infrastructure.label": {"message": "基础设施"},
+  "community.sponsor.infrastructure.title": {"message": "云与存储生态伙伴"},
+  "community.sponsor.infrastructure.desc": {"message": "帮助 BackupX 覆盖对象存储、WebDAV、SFTP 以及区域云平台的真实验证。"},
+  "community.sponsor.security.label": {"message": "安全"},
+  "community.sponsor.security.title": {"message": "审计与可靠性支持者"},
+  "community.sponsor.security.desc": {"message": "支持加密、恢复演练、发布签名和运维检查等强化工作。"},
+  "community.sponsor.community.label": {"message": "社区"},
+  "community.sponsor.community.title": {"message": "开源支持者"},
+  "community.sponsor.community.desc": {"message": "支持文档、示例、平台测试和贡献者引导。"},
+  "community.sponsor.tier.backer.name": {"message": "Backer"},
+  "community.sponsor.tier.backer.amount": {"message": "适合个人与小团队"},
+  "community.sponsor.tier.backer.desc": {"message": "支持文档、Issue 分流、兼容性测试和小型体验改进。"},
+  "community.sponsor.tier.partner.name": {"message": "Partner"},
+  "community.sponsor.tier.partner.amount": {"message": "适合存储与基础设施厂商"},
+  "community.sponsor.tier.partner.desc": {"message": "支持 Provider 验证、部署示例、基准说明和集成指南。"},
+  "community.sponsor.tier.enterprise.name": {"message": "Enterprise"},
+  "community.sponsor.tier.enterprise.amount": {"message": "适合生产环境使用方"},
+  "community.sponsor.tier.enterprise.desc": {"message": "赞助恢复演练、发布加固、审计和长期维护等可靠性工作。"},
+  "community.contributor.kicker": {"message": "贡献者"},
+  "community.contributor.all": {"message": "查看全部"},
+  "community.contributor.source": {"message": "浏览器端通过 GitHub contributors API 获取。"},
+  "community.contributor.botRole": {"message": "自动化贡献者"},
+  "community.contributor.githubRole": {"message": "GitHub 贡献者"},
+  "community.contributor.contributions": {"message": "{count} 次贡献"},
+  "community.path.kicker": {"message": "贡献路径"},
+  "community.path.issues.title": {"message": "反馈生产问题"},
+  "community.path.issues.desc": {"message": "提交日志、部署拓扑和恢复预期。"},
+  "community.path.docs.title": {"message": "完善文档与示例"},
+  "community.path.docs.desc": {"message": "贡献存储、Agent 和数据库部署指南。"},
+  "community.path.code.title": {"message": "提交聚焦的 PR"},
+  "community.path.code.desc": {"message": "保持改动小而可测，并贴合现有架构。"},
+  "sponsors.pageTitle": {"message": "赞助商"},
+  "sponsors.pageDescription": {"message": "赞助 BackupX 的可靠性、文档、存储兼容性和长期维护。"},
+  "sponsors.tag": {"message": "赞助商"},
+  "sponsors.title": {"message": "赞助 BackupX 生态"},
+  "sponsors.subtitle": {"message": "赞助帮助 BackupX 更贴近真实运维：经过验证的存储 Provider、可靠发布、恢复信心和更完善的文档。"}
 }
--- a/docs-site/i18n/zh-CN/docusaurus-plugin-content-docs/current/deployment/bare-metal.md
+++ b/docs-site/i18n/zh-CN/docusaurus-plugin-content-docs/current/deployment/bare-metal.md
@@ -25,6 +25,19 @@ sudo ./install.sh
 4. 安装并启用 `backupx.service` systemd 单元
 5. （可选）生成 Nginx 站点配置 — 参见 [Nginx 反向代理](./nginx)

+如果要部署多节点集群，安装后请编辑 `/etc/backupx/config.yaml`，设置远程 Agent 可访问到的 Master URL：
+
+```yaml
+server:
+  external_url: "https://backup.example.com"
+```
+
+修改后重启 BackupX：
+
+```bash
+sudo systemctl restart backupx
+```
+
 ## 从源码构建

 ```bash
--- a/docs-site/i18n/zh-CN/docusaurus-plugin-content-docs/current/deployment/configuration.md
+++ b/docs-site/i18n/zh-CN/docusaurus-plugin-content-docs/current/deployment/configuration.md
@@ -15,13 +15,14 @@ server:
  host: "0.0.0.0"             # BACKUPX_SERVER_HOST
  port: 8340                  # BACKUPX_SERVER_PORT
  mode: "release"             # release | debug
+  external_url: ""            # BACKUPX_SERVER_EXTERNAL_URL — Agent 安装脚本使用的 Master 对外 URL

 database:
  path: "./data/backupx.db"   # BACKUPX_DATABASE_PATH — 内嵌 SQLite

 security:
  jwt_secret: ""              # BACKUPX_SECURITY_JWT_SECRET — 留空自动生成
-  jwt_expires_in: "24h"
+  jwt_expire: "24h"           # BACKUPX_SECURITY_JWT_EXPIRE
  encryption_key: ""          # 用于加密存储配置的 AES-256-GCM 密钥

 backup:
@@ -46,7 +47,20 @@ log:
 | 配置项 | 环境变量 |
 |--------|----------|
 | `server.port` | `BACKUPX_SERVER_PORT` |
+| `server.external_url` | `BACKUPX_SERVER_EXTERNAL_URL` |
+| `security.jwt_expire` | `BACKUPX_SECURITY_JWT_EXPIRE` |
 | `log.level` | `BACKUPX_LOG_LEVEL` |
 | `backup.max_concurrent` | `BACKUPX_BACKUP_MAX_CONCURRENT` |
 | `backup.temp_dir` | `BACKUPX_BACKUP_TEMP_DIR` |
 | `backup.bandwidth_limit` | `BACKUPX_BACKUP_BANDWIDTH_LIMIT` |
+
+## Master 对外 URL
+
+当 BackupX 部署在 Docker、Nginx、负载均衡或多层反向代理后面，且后端收到的内部 Host 不是远程 Agent 可访问地址时，请配置 `server.external_url`：
+
+```yaml
+server:
+  external_url: "https://backup.example.com"
+```
+
+BackupX 会用这个地址渲染一键 Agent 安装脚本和 docker-compose 片段。该地址必须能被所有 Agent 主机访问。只有在 `X-Forwarded-Proto` / `X-Forwarded-Host` 可靠且正好指向 Agent 可访问地址时，才建议留空。
--- a/docs-site/i18n/zh-CN/docusaurus-plugin-content-docs/current/deployment/docker.md
+++ b/docs-site/i18n/zh-CN/docusaurus-plugin-content-docs/current/deployment/docker.md
@@ -25,6 +25,8 @@ services:
      - /etc/nginx:/mnt/nginx-conf:ro
    environment:
      - TZ=Asia/Shanghai
+      # 远程 Agent 需要通过公网或可路由地址连接 Master 时必须配置：
+      # - BACKUPX_SERVER_EXTERNAL_URL=https://backup.example.com
      - BACKUPX_LOG_LEVEL=info
      - BACKUPX_BACKUP_MAX_CONCURRENT=2

@@ -42,6 +44,17 @@ docker compose up -d

 想备份宿主机上的文件，需要将对应路径挂载进容器。在 Web UI 创建文件类型任务时，把源路径指向挂载后的容器内路径（如 `/mnt/www`）。

+## 多节点集群
+
+如果要在其他机器部署 Agent，请在 Master 容器上设置 `BACKUPX_SERVER_EXTERNAL_URL`，值为所有 Agent 都能访问到的 URL：
+
+```yaml
+environment:
+  - BACKUPX_SERVER_EXTERNAL_URL=https://backup.example.com
+```
+
+Agent 跨不可信网络访问时建议使用 HTTPS。控制台生成的一键安装脚本和 docker-compose 片段会把这个值写成 `BACKUPX_AGENT_MASTER`。
+
 ## 环境变量

 所有配置项都可以通过 `BACKUPX_` 前缀环境变量覆盖：
--- a/docs-site/i18n/zh-CN/docusaurus-plugin-content-docs/current/features/backup-types.md
+++ b/docs-site/i18n/zh-CN/docusaurus-plugin-content-docs/current/features/backup-types.md
@@ -8,6 +8,8 @@ description: 文件、MySQL、PostgreSQL、SQLite 和 SAP HANA — 各自的能

 BackupX 支持五种内置备份类型，类型决定了用哪个 runner 执行。

+当任务路由到远程 Agent 时，源路径和外部工具都会在该 Agent 主机上解析。多存储目标上传仍会逐目标记录结果；只要至少一个目标上传成功，备份记录即为成功，详情中的目标结果表会展示部分失败。
+
 ## 文件 / 目录

 打包（可选 gzip）一个或多个文件系统路径。
--- a/docs-site/i18n/zh-CN/docusaurus-plugin-content-docs/current/features/multi-node.md
+++ b/docs-site/i18n/zh-CN/docusaurus-plugin-content-docs/current/features/multi-node.md
@@ -26,56 +26,72 @@ BackupX 支持 Master-Agent 模式：备份任务可以指定在哪个节点执
 - **执行** — Agent 复用 BackupRunner（file / mysql / postgresql / sqlite / saphana）并直接上传到存储
 - **安全** — 每个节点独立 Token；Agent 不持有 Master 的 JWT 密钥或 AES-256 加密密钥

-## 使用步骤
+## 一键部署步骤

-### 1. 在 Master 创建节点
+### 0. 为生产集群设置 Master 对外 URL

-Web 控制台 → **节点管理** → **添加节点**。界面会**一次性**显示 64 字节十六进制令牌，请妥善保存。
+生成 Agent 安装命令前，请先确认 Master URL 对所有目标主机稳定可达。

-### 2. 在远程服务器部署 Agent
+如果 BackupX 部署在 Docker、Nginx、负载均衡或外层反向代理后面，请在 Master 配置 `server.external_url` 或环境变量 `BACKUPX_SERVER_EXTERNAL_URL`：

-把 BackupX 二进制上传到目标服务器（与 Master 同一个文件），然后用以下任一方式启动：
-
-**方式 A：CLI 参数**
-
-```bash
-backupx agent --master http://master.example.com:8340 --token <token>
+```yaml title="config.yaml"
+server:
+  external_url: "https://backup.example.com"
 ```

-**方式 B：配置文件**
+该 URL 会写入 systemd 单元、前台运行命令和 docker-compose 片段。如果地址不正确，Agent 可能安装成功但始终离线，因为它会持续轮询一个内网地址或仅浏览器可访问的地址。

-```yaml title="/etc/backupx/agent.yaml"
-master: http://master.example.com:8340
-token: <token>
-heartbeatInterval: 15s
-pollInterval: 5s
-tempDir: /var/lib/backupx-agent
-```
+### 1. 打开安装向导

-```bash
-backupx agent --config /etc/backupx/agent.yaml
-```
+Web 控制台 → **节点管理** → **添加节点**，打开三步向导：

-**方式 C：环境变量**（适合 Docker / systemd）
+- **第一步 · 节点信息**：填写节点名称；或切换"批量创建"粘贴多行名称（每行一个，最多 50 个）
+- **第二步 · 部署参数**：选择安装模式（`systemd` 推荐、`Docker`、`前台运行` 调试用）、架构（默认自动检测）、Agent 版本（默认跟随 Master 版本）、有效期（5 分钟 / 15 分钟 / 1 小时 / 24 小时）、下载源（`GitHub` 直连或 `ghproxy` 镜像，国内服务器建议后者）
+- **第三步 · 安装命令**：一条一键安装命令 + 实时倒计时。点击复制，粘贴到目标机以 root 权限执行。默认命令会嵌入已渲染的安装脚本，目标机无需再通过反向代理访问 `/api/install/:token`；公开安装 URL 仍作为备用路径保留。

-```bash
-BACKUPX_AGENT_MASTER=http://master.example.com:8340 \
-BACKUPX_AGENT_TOKEN=<token> \
-backupx agent
-```
+### 2. 目标机一条命令完成

-连接成功后节点在列表中显示为 **在线**。
+请直接使用 Web 控制台生成的命令。该命令会把安装脚本写入临时文件，校验 `BACKUPX_AGENT_INSTALL_V1` 魔数，再以 root 权限执行。

-### 3. 把任务路由到该节点
+脚本会自动：
+
+1. 检测操作系统与架构（`uname -m`）
+2. 从 GitHub Release（或 ghproxy 镜像）下载匹配的 `backupx` 二进制
+3. 安装到 `/opt/backupx-agent`，创建系统用户 `backupx`
+4. 写入 `/etc/systemd/system/backupx-agent.service`（token 已烧入环境变量）
+5. 执行 `systemctl enable --now backupx-agent`
+6. 轮询 `/api/v1/agent/self`，直到 Master 确认 `status: online`（最多 30 秒）
+
+Docker 模式使用同一组环境变量约定：`BACKUPX_AGENT_MASTER`、`BACKUPX_AGENT_TOKEN` 和 `BACKUPX_AGENT_TEMP_DIR=/var/lib/backupx-agent/tmp`。容器启动后，安装脚本同样会探测 `/api/v1/agent/self`；如果节点没有上线，会输出 `docker ps` 与 `docker logs --tail=100 backupx-agent` 排查命令，并以非零状态退出。
+
+如果使用 URL 备用命令时 `curl` 输出 HTML，或 shell 报 `Syntax error: newline unexpected`，说明安装 URL 被 Web 控制台接管而不是转发到后端。需要确保 `/api/install/` 或 `/install/` 至少一个路径能转发到 BackupX 后端，或改用控制台生成的嵌入式命令。
+
+脚本是幂等的：升级或重装只需重新生成一条安装命令再跑一次。一次性安装链接在 TTL 到期或被首次消费后立即作废。
+
+### 3. 随时轮换 Agent Token
+
+节点操作列（︙）→ **重新生成 Token**。新 Token 一次性显示，旧 Token 24 小时内仍有效，便于滚动替换无需停机。24 小时后旧 Token 被拒绝。
+
+### 4. 批量部署
+
+第一步选"批量创建"粘贴节点名（每行一个，最多 50 个）。第三步显示每个节点对应的命令表格，底部「导出 .sh」可打包为单个 shell 文件，方便 SSH 循环或 Ansible 任务。
+
+### 5. 把任务路由到该节点

 在 **备份任务** 页面新建任务时选择对应节点。任务触发时：

 - 本机 / 未指定（`nodeId=0`）：Master 进程内直接执行
 - 远程节点：Master 写入命令队列 → Agent 拉取 → Agent 本地执行 → 上传 → 回报

+节点列表会展示 Agent 健康与命令队列状态：pending/dispatched 深度、运行中的长任务、超时数、最旧活跃命令年龄和最近 Agent 错误。同样的队列深度、运行中命令数和超时快照会导出为 Prometheus 指标：
+
+- `backupx_agent_command_queue_depth`
+- `backupx_agent_command_running`
+- `backupx_agent_command_timeout_total`
+
 ## 已知限制

- **Agent 不支持加密备份**：Agent 不持有 Master 的 AES-256 密钥。`encrypt: true` 的任务路由到 Agent 时会直接上报失败
+- **加密备份仅支持 Master 本机执行**：Agent 不持有 Master 的 AES-256 密钥。创建或更新任务时，如果 `encrypt: true` 且选择了远程节点或节点池，会在入口直接拒绝
 - **目录浏览超时**：远程目录浏览通过命令队列做同步 RPC，默认 15s 超时
 - **派发命令超时**：Agent 领取但未完成的命令超过 10 分钟会被置 `timeout`

--- a/docs-site/i18n/zh-CN/docusaurus-plugin-content-docs/current/getting-started/quick-start.md
+++ b/docs-site/i18n/zh-CN/docusaurus-plugin-content-docs/current/getting-started/quick-start.md
@@ -42,6 +42,8 @@ description: 部署 BackupX、添加存储目标、创建第一个备份任务
 2. **源配置** — 文件备份选择源路径（支持多个），数据库备份填写连接信息
 3. **存储与策略** — 选择存储目标（支持多个）、压缩策略、保留天数、是否加密

+对于路由到 Agent 的任务，加密必须关闭，因为 Agent 不会拿到 Master 的加密密钥。BackupX 会在创建/更新阶段拒绝开启加密的远程节点或节点池任务。
+
 保存后可点击 **立即执行** 测试，**备份记录** 页面实时查看执行日志。

 :::note
--- a/docs-site/i18n/zh-CN/docusaurus-theme-classic/footer.json
+++ b/docs-site/i18n/zh-CN/docusaurus-theme-classic/footer.json
@@ -2,6 +2,8 @@
  "link.title.Docs": {"message": "文档"},
  "link.title.Features": {"message": "功能"},
  "link.title.More": {"message": "更多"},
+  "link.title.Community": {"message": "社区"},
+  "link.title.Sponsors": {"message": "赞助商"},
  "link.item.label.Introduction": {"message": "简介"},
  "link.item.label.Quick Start": {"message": "快速开始"},
  "link.item.label.Installation": {"message": "安装"},
@@ -11,5 +13,11 @@
  "link.item.label.GitHub": {"message": "GitHub"},
  "link.item.label.Releases": {"message": "Releases"},
  "link.item.label.Docker Hub": {"message": "Docker Hub"},
-  "link.item.label.Issues": {"message": "Issues"}
+  "link.item.label.Issues": {"message": "Issues"},
+  "link.item.label.Contributors": {"message": "贡献者"},
+  "link.item.label.Pull Requests": {"message": "Pull Requests"},
+  "link.item.label.Sponsor": {"message": "赞助"},
+  "link.item.label.Sponsor BackupX": {"message": "赞助 BackupX"},
+  "link.item.label.Partnership": {"message": "合作伙伴"},
+  "link.item.label.Sponsor tiers": {"message": "赞助层级"}
 }
--- a/docs-site/i18n/zh-CN/docusaurus-theme-classic/navbar.json
+++ b/docs-site/i18n/zh-CN/docusaurus-theme-classic/navbar.json
@@ -7,6 +7,14 @@
    "message": "下载",
    "description": "Navbar item: Downloads"
  },
+  "item.label.Community": {
+    "message": "社区",
+    "description": "Navbar item: Community"
+  },
+  "item.label.Sponsors": {
+    "message": "赞助商",
+    "description": "Navbar item: Sponsors"
+  },
  "item.label.GitHub": {
    "message": "GitHub",
    "description": "Navbar item: GitHub"
--- a/docs-site/package-lock.json
+++ b/docs-site/package-lock.json
@@ -1,12 +1,12 @@
 {
  "name": "docs-site-tmp",
-  "version": "0.0.0",
+  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "docs-site-tmp",
-      "version": "0.0.0",
+      "version": "1.0.0",
      "dependencies": {
        "@docusaurus/core": "3.10.0",
        "@docusaurus/faster": "3.10.0",
@@ -164,7 +164,6 @@
      "resolved": "https://registry.npmmirror.com/@algolia/client-search/-/client-search-5.50.2.tgz",
      "integrity": "sha512-ypSboUJ3XJoQz5DeDo82hCnrRuwq3q9ZdFhVKAik9TnZh1DvLqoQsrbBjXg7C7zQOtV/Qbge/HmyoV6V5L7MhQ==",
      "license": "MIT",
-      "peer": true,
      "dependencies": {
        "@algolia/client-common": "5.50.2",
        "@algolia/requester-browser-xhr": "5.50.2",
@@ -263,12 +262,12 @@
      }
    },
    "node_modules/@babel/code-frame": {
-      "version": "7.29.0",
-      "resolved": "https://registry.npmmirror.com/@babel/code-frame/-/code-frame-7.29.0.tgz",
-      "integrity": "sha512-9NhCeYjq9+3uxgdtp20LSiJXJvN0FeCtNGpJxuMFZ1Kv3cWUNb6DOhJwUvcVCzKGR66cw4njwM6hrJLqgOwbcw==",
+      "version": "7.29.7",
+      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.29.7.tgz",
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-        "body-parser": "~1.20.3",
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-      "resolved": "https://registry.npmmirror.com/iconv-lite/-/iconv-lite-0.4.24.tgz",
+      "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.24.tgz",
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@@ -12069,7 +12051,7 @@
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-      "resolved": "https://registry.npmmirror.com/media-typer/-/media-typer-0.3.0.tgz",
+      "resolved": "https://registry.npmjs.org/media-typer/-/media-typer-0.3.0.tgz",
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-      "resolved": "https://registry.npmmirror.com/object-inspect/-/object-inspect-1.13.4.tgz",
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+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.14.tgz",
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+      "version": "6.15.2",
+      "resolved": "https://registry.npmjs.org/qs/-/qs-6.15.2.tgz",
+      "integrity": "sha512-Rzq0KEyX/w/tEybncDgdkZrJgVUsUMk3xjh3t5bv3S1HTAtg+uOYt72+ZfwiQwKdysThkTBdL/rTi6HDmX9Ddw==",
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      "version": "2.5.3",
-      "resolved": "https://registry.npmmirror.com/raw-body/-/raw-body-2.5.3.tgz",
+      "resolved": "https://registry.npmjs.org/raw-body/-/raw-body-2.5.3.tgz",
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@@ -16416,7 +16395,7 @@
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-      "resolved": "https://registry.npmmirror.com/bytes/-/bytes-3.1.2.tgz",
+      "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.2.tgz",
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@@ -16468,7 +16446,6 @@
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-      "resolved": "https://registry.npmmirror.com/safer-buffer/-/safer-buffer-2.1.2.tgz",
+      "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
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@@ -17600,7 +17575,7 @@
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      "version": "1.1.0",
-      "resolved": "https://registry.npmmirror.com/side-channel/-/side-channel-1.1.0.tgz",
+      "resolved": "https://registry.npmjs.org/side-channel/-/side-channel-1.1.0.tgz",
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@@ -17619,7 +17594,7 @@
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      "version": "1.0.1",
-      "resolved": "https://registry.npmmirror.com/side-channel-list/-/side-channel-list-1.0.1.tgz",
+      "resolved": "https://registry.npmjs.org/side-channel-list/-/side-channel-list-1.0.1.tgz",
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@@ -17635,7 +17610,7 @@
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    "node_modules/side-channel-map": {
      "version": "1.0.1",
-      "resolved": "https://registry.npmmirror.com/side-channel-map/-/side-channel-map-1.0.1.tgz",
+      "resolved": "https://registry.npmjs.org/side-channel-map/-/side-channel-map-1.0.1.tgz",
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@@ -17653,7 +17628,7 @@
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      "version": "1.0.2",
-      "resolved": "https://registry.npmmirror.com/side-channel-weakmap/-/side-channel-weakmap-1.0.2.tgz",
+      "resolved": "https://registry.npmjs.org/side-channel-weakmap/-/side-channel-weakmap-1.0.2.tgz",
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@@ -18328,8 +18303,7 @@
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-      "license": "0BSD",
-      "peer": true
+      "license": "0BSD"
    },
    "node_modules/tsyringe": {
      "version": "4.10.0",
@@ -18363,7 +18337,7 @@
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    "node_modules/type-is": {
      "version": "1.6.18",
-      "resolved": "https://registry.npmmirror.com/type-is/-/type-is-1.6.18.tgz",
+      "resolved": "https://registry.npmjs.org/type-is/-/type-is-1.6.18.tgz",
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      "dependencies": {
@@ -18376,7 +18350,7 @@
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      "version": "1.52.0",
-      "resolved": "https://registry.npmmirror.com/mime-db/-/mime-db-1.52.0.tgz",
+      "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.52.0.tgz",
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      "license": "MIT",
      "engines": {
@@ -18385,7 +18359,7 @@
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      "version": "2.1.35",
-      "resolved": "https://registry.npmmirror.com/mime-types/-/mime-types-2.1.35.tgz",
+      "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.35.tgz",
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@@ -18410,7 +18384,6 @@
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      "devOptional": true,
      "license": "Apache-2.0",
-      "peer": true,
      "bin": {
        "tsc": "bin/tsc",
        "tsserver": "bin/tsserver"
@@ -18752,7 +18725,6 @@
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      "license": "MIT",
-      "peer": true,
      "dependencies": {
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        "fast-json-stable-stringify": "^2.0.0",
@@ -18951,7 +18923,6 @@
      "resolved": "https://registry.npmmirror.com/webpack/-/webpack-5.106.2.tgz",
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-      "peer": true,
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        "@types/eslint-scope": "^3.7.7",
        "@types/estree": "^1.0.8",
@@ -19093,9 +19064,9 @@
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    },
    "node_modules/webpack-dev-server": {
-      "version": "5.2.3",
-      "resolved": "https://registry.npmmirror.com/webpack-dev-server/-/webpack-dev-server-5.2.3.tgz",
-      "integrity": "sha512-9Gyu2F7+bg4Vv+pjbovuYDhHX+mqdqITykfzdM9UyKqKHlsE5aAjRhR+oOEfXW5vBeu8tarzlJFIZva4ZjAdrQ==",
+      "version": "5.2.4",
+      "resolved": "https://registry.npmjs.org/webpack-dev-server/-/webpack-dev-server-5.2.4.tgz",
+      "integrity": "sha512-GqDPGZN9bRqKBTkp4aWkobDDHMsrXKoGSdOH56smIri8qR0JG8gfL8/v/f/OZR3/OKXjG8uwJbFVhKm/FNU/UA==",
      "license": "MIT",
      "dependencies": {
        "@types/bonjour": "^3.5.13",
--- a/docs-site/src/components/HomepageCommunity/index.tsx
+++ b/docs-site/src/components/HomepageCommunity/index.tsx
@@ -0,0 +1,329 @@
+import type {ReactNode} from 'react';
+import {useEffect, useState} from 'react';
+import Heading from '@theme/Heading';
+import Translate from '@docusaurus/Translate';
+import Link from '@docusaurus/Link';
+import styles from './styles.module.css';
+
+type SponsorSlot = {
+  brand: ReactNode;
+  name: ReactNode;
+  href?: string;
+};
+
+type Contributor = {
+  login: string;
+  avatarUrl?: string;
+  contributions: number;
+  type: string;
+  href: string;
+};
+
+type GitHubContributor = {
+  login: string;
+  avatar_url?: string;
+  contributions?: number;
+  html_url?: string;
+  type?: string;
+};
+
+type CommunityPath = {
+  title: ReactNode;
+  description: ReactNode;
+  href: string;
+};
+
+const SPONSOR_SLOTS: SponsorSlot[] = [
+  {
+    brand: 'BackupX',
+    name: <Translate id="community.sponsor.logo.project">Project backer</Translate>,
+    href: 'https://github.com/sponsors/Awuqing',
+  },
+  {
+    brand: 'Cloud',
+    name: <Translate id="community.sponsor.logo.cloud">Cloud partner</Translate>,
+  },
+  {
+    brand: 'Object',
+    name: <Translate id="community.sponsor.logo.object">Object storage</Translate>,
+  },
+  {
+    brand: 'CDN',
+    name: <Translate id="community.sponsor.logo.cdn">CDN partner</Translate>,
+  },
+  {
+    brand: 'DB',
+    name: <Translate id="community.sponsor.logo.database">Database partner</Translate>,
+  },
+  {
+    brand: 'Security',
+    name: <Translate id="community.sponsor.logo.security">Security audit</Translate>,
+  },
+  {
+    brand: 'Agent',
+    name: <Translate id="community.sponsor.logo.agent">Remote node lab</Translate>,
+  },
+  {
+    brand: 'Docs',
+    name: <Translate id="community.sponsor.logo.docs">Docs sponsor</Translate>,
+  },
+  {
+    brand: 'Release',
+    name: <Translate id="community.sponsor.logo.release">Release sponsor</Translate>,
+  },
+  {
+    brand: 'S3',
+    name: <Translate id="community.sponsor.logo.s3">S3 compatible</Translate>,
+  },
+  {
+    brand: 'WebDAV',
+    name: <Translate id="community.sponsor.logo.webdav">WebDAV partner</Translate>,
+  },
+  {
+    brand: 'SFTP',
+    name: <Translate id="community.sponsor.logo.sftp">SFTP partner</Translate>,
+  },
+  {
+    brand: 'Docker',
+    name: <Translate id="community.sponsor.logo.docker">Container partner</Translate>,
+  },
+  {
+    brand: 'Mirror',
+    name: <Translate id="community.sponsor.logo.mirror">Mirror partner</Translate>,
+  },
+  {
+    brand: 'Restore',
+    name: <Translate id="community.sponsor.logo.restore">Restore drill</Translate>,
+  },
+  {
+    brand: 'QA',
+    name: <Translate id="community.sponsor.logo.qa">Test lab</Translate>,
+  },
+  {
+    brand: 'OSS',
+    name: <Translate id="community.sponsor.logo.oss">Open source</Translate>,
+  },
+  {
+    brand: 'Open Slot',
+    name: <Translate id="community.sponsor.logo.open">Sponsor slot open</Translate>,
+  },
+];
+
+const FALLBACK_CONTRIBUTORS: Contributor[] = [
+  {
+    login: 'Awuqing',
+    contributions: 0,
+    type: 'User',
+    href: 'https://github.com/Awuqing',
+  },
+  {
+    login: 'dependabot[bot]',
+    contributions: 0,
+    type: 'Bot',
+    href: 'https://github.com/dependabot',
+  },
+];
+
+const COMMUNITY_PATHS: CommunityPath[] = [
+  {
+    title: <Translate id="community.path.issues.title">Report production issues</Translate>,
+    description: <Translate id="community.path.issues.desc">Share logs, deployment topology and restore expectations.</Translate>,
+    href: 'https://github.com/Awuqing/BackupX/issues',
+  },
+  {
+    title: <Translate id="community.path.docs.title">Improve docs and examples</Translate>,
+    description: <Translate id="community.path.docs.desc">Contribute deployment guides for storage, agents and databases.</Translate>,
+    href: '/docs/development/contributing',
+  },
+  {
+    title: <Translate id="community.path.code.title">Ship focused PRs</Translate>,
+    description: <Translate id="community.path.code.desc">Keep changes small, tested and aligned with the existing architecture.</Translate>,
+    href: 'https://github.com/Awuqing/BackupX/pulls',
+  },
+];
+
+function SponsorLogoCard({brand, name, href}: SponsorSlot) {
+  return (
+    <Link className={styles.sponsorLogoTile} to={href ?? 'https://github.com/sponsors/Awuqing'}>
+      <span className={styles.sponsorLogoMark}>{brand}</span>
+      <span className={styles.sponsorLogoName}>{name}</span>
+    </Link>
+  );
+}
+
+function getInitials(login: string): string {
+  return login
+    .replace(/\[bot\]$/i, '')
+    .split(/[-_\s]/)
+    .filter(Boolean)
+    .slice(0, 2)
+    .map(part => part[0]?.toUpperCase())
+    .join('') || login.slice(0, 2).toUpperCase();
+}
+
+function normalizeContributor(contributor: GitHubContributor): Contributor | null {
+  if (!contributor.login) {
+    return null;
+  }
+  return {
+    login: contributor.login,
+    avatarUrl: contributor.avatar_url,
+    contributions: contributor.contributions ?? 0,
+    type: contributor.type ?? 'User',
+    href: contributor.html_url ?? `https://github.com/${contributor.login}`,
+  };
+}
+
+function useGitHubContributors(): Contributor[] {
+  const [contributors, setContributors] = useState<Contributor[]>(FALLBACK_CONTRIBUTORS);
+
+  useEffect(() => {
+    const controller = new AbortController();
+
+    fetch('https://api.github.com/repos/Awuqing/BackupX/contributors?per_page=12', {
+      signal: controller.signal,
+      headers: {
+        Accept: 'application/vnd.github+json',
+      },
+    })
+      .then(response => {
+        if (!response.ok) {
+          throw new Error(`GitHub contributors request failed: ${response.status}`);
+        }
+        return response.json() as Promise<GitHubContributor[]>;
+      })
+      .then(payload => {
+        const nextContributors = payload
+          .map(normalizeContributor)
+          .filter((contributor): contributor is Contributor => Boolean(contributor));
+
+        if (nextContributors.length > 0) {
+          setContributors(nextContributors);
+        }
+      })
+      .catch(error => {
+        if (error instanceof Error && error.name !== 'AbortError') {
+          console.warn(error.message);
+        }
+      });
+
+    return () => controller.abort();
+  }, []);
+
+  return contributors;
+}
+
+function ContributorCard({login, avatarUrl, contributions, type, href}: Contributor) {
+  return (
+    <Link className={styles.contributorCard} to={href}>
+      {avatarUrl ? (
+        <img className={styles.avatarImage} src={avatarUrl} alt="" loading="lazy" />
+      ) : (
+        <span className={styles.avatar} aria-hidden="true">{getInitials(login)}</span>
+      )}
+      <span className={styles.contributorBody}>
+        <strong>{login}</strong>
+        <span>
+          {type === 'Bot' ? (
+            <Translate id="community.contributor.botRole">Automation contributor</Translate>
+          ) : (
+            <Translate id="community.contributor.githubRole">GitHub contributor</Translate>
+          )}
+        </span>
+        <em>
+          <Translate id="community.contributor.contributions" values={{count: contributions}}>
+            {'{count} contributions'}
+          </Translate>
+        </em>
+      </span>
+    </Link>
+  );
+}
+
+export function HomepageSponsors(): ReactNode {
+  return (
+    <div className={styles.sponsorWall}>
+      <div className={styles.sponsorWallHeader}>
+        <Heading as="h3" className={styles.sponsorWallTitle}>
+          <Translate id="community.sponsor.wallTitle">Sponsors</Translate>
+        </Heading>
+        <Link className={styles.sponsorWallAction} to="https://github.com/sponsors/Awuqing">
+          <Translate id="community.sponsor.cta">Sponsor BackupX</Translate>
+          <span aria-hidden="true">-&gt;</span>
+        </Link>
+      </div>
+
+      <div className={styles.sponsorLogoGrid}>
+        {SPONSOR_SLOTS.map((slot, index) => (
+          <SponsorLogoCard key={index} {...slot} />
+        ))}
+      </div>
+    </div>
+  );
+}
+
+export default function HomepageCommunity(): ReactNode {
+  const contributors = useGitHubContributors();
+
+  return (
+    <section id="community" className={styles.section}>
+      <div className="container">
+        <div className={styles.sectionHead}>
+          <div className={styles.sectionTag}>
+            <Translate id="community.tag">COMMUNITY</Translate>
+          </div>
+          <Heading as="h2" className={styles.sectionTitle}>
+            <Translate id="community.title">Built in the open, ready for long-term operators</Translate>
+          </Heading>
+          <p className={styles.sectionSubtitle}>
+            <Translate id="community.subtitle">
+              Backup software earns trust through transparent releases, real deployment feedback and a contributor path that stays practical.
+            </Translate>
+          </p>
+        </div>
+
+        <HomepageSponsors />
+
+        <div className={styles.communityGrid}>
+          <div className={styles.panel}>
+            <div className={styles.panelHeader}>
+              <span>
+                <Translate id="community.contributor.kicker">Contributors</Translate>
+              </span>
+              <Link to="https://github.com/Awuqing/BackupX/graphs/contributors">
+                <Translate id="community.contributor.all">View all</Translate>
+              </Link>
+            </div>
+            <div className={styles.panelNote}>
+              <Translate id="community.contributor.source">Loaded from GitHub contributors API in the browser.</Translate>
+            </div>
+            <div className={styles.contributorList}>
+              {contributors.map(contributor => (
+                <ContributorCard key={contributor.login} {...contributor} />
+              ))}
+            </div>
+          </div>
+
+          <div className={styles.panel}>
+            <div className={styles.panelHeader}>
+              <span>
+                <Translate id="community.path.kicker">Contributor paths</Translate>
+              </span>
+            </div>
+            <div className={styles.pathList}>
+              {COMMUNITY_PATHS.map((path, index) => (
+                <Link key={index} className={styles.pathItem} to={path.href}>
+                  <span className={styles.pathIndex}>{String(index + 1).padStart(2, '0')}</span>
+                  <span>
+                    <strong>{path.title}</strong>
+                    <em>{path.description}</em>
+                  </span>
+                </Link>
+              ))}
+            </div>
+          </div>
+        </div>
+      </div>
+    </section>
+  );
+}
--- a/docs-site/src/components/HomepageCommunity/styles.module.css
+++ b/docs-site/src/components/HomepageCommunity/styles.module.css
@@ -0,0 +1,429 @@
+.section {
+  padding: 5.5rem 0 6rem;
+  background:
+    linear-gradient(180deg, rgba(245, 247, 250, 0) 0%, rgba(245, 247, 250, 0.86) 100%),
+    var(--ifm-background-color);
+}
+
+[data-theme='dark'] .section {
+  background:
+    linear-gradient(180deg, rgba(15, 17, 21, 0) 0%, rgba(255, 255, 255, 0.03) 100%),
+    var(--ifm-background-color);
+}
+
+.sectionHead {
+  max-width: 760px;
+  margin: 0 auto 2.5rem;
+  text-align: center;
+}
+
+.sectionTag {
+  display: inline-flex;
+  align-items: center;
+  min-height: 28px;
+  margin-bottom: 1rem;
+  padding: 4px 10px;
+  color: #00a870;
+  background: rgba(0, 180, 42, 0.1);
+  border: 1px solid rgba(0, 180, 42, 0.18);
+  border-radius: 8px;
+  font-size: 12px;
+  font-weight: 750;
+  letter-spacing: 0;
+}
+
+.sectionTitle {
+  margin: 0 0 1rem;
+  color: var(--ifm-heading-color);
+  font-size: 2.35rem;
+  font-weight: 750;
+  letter-spacing: 0;
+  line-height: 1.2;
+}
+
+.sectionSubtitle {
+  margin: 0;
+  color: var(--ifm-color-content-secondary);
+  font-size: 1.04rem;
+  line-height: 1.7;
+}
+
+.sponsorWall {
+  overflow: hidden;
+  margin-bottom: 1rem;
+  background: var(--ifm-background-color);
+  border: 1px solid var(--ifm-color-emphasis-200);
+  border-radius: 8px;
+  box-shadow: 0 12px 28px rgba(29, 33, 41, 0.06);
+}
+
+[data-theme='dark'] .sponsorWall {
+  background: rgba(255, 255, 255, 0.02);
+  border-color: rgba(255, 255, 255, 0.08);
+  box-shadow: none;
+}
+
+.sponsorWallHeader {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 1rem;
+  min-height: 60px;
+  padding: 0 1.25rem;
+  border-bottom: 1px solid var(--ifm-color-emphasis-200);
+}
+
+[data-theme='dark'] .sponsorWallHeader {
+  border-bottom-color: rgba(255, 255, 255, 0.08);
+}
+
+.sponsorWallTitle {
+  position: relative;
+  margin: 0;
+  padding-left: 14px;
+  color: var(--ifm-heading-color);
+  font-size: 1.05rem;
+  font-weight: 750;
+  letter-spacing: 0;
+}
+
+.sponsorWallTitle::before {
+  position: absolute;
+  top: 50%;
+  left: 0;
+  width: 3px;
+  height: 18px;
+  content: "";
+  background: #52c41a;
+  border-radius: 3px;
+  transform: translateY(-50%);
+}
+
+.sponsorWallAction {
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  min-height: 36px;
+  padding: 0 12px;
+  color: #52c41a;
+  background: rgba(82, 196, 26, 0.08);
+  border: 1px solid rgba(82, 196, 26, 0.2);
+  border-radius: 8px;
+  font-size: 13px;
+  font-weight: 700;
+  text-decoration: none !important;
+  white-space: nowrap;
+  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
+}
+
+.sponsorWallAction:hover,
+.sponsorWallAction:focus-visible {
+  color: #389e0d;
+  background: rgba(82, 196, 26, 0.14);
+  border-color: #52c41a;
+  transform: translateY(-1px);
+}
+
+.sponsorLogoGrid {
+  display: grid;
+  grid-template-columns: repeat(6, minmax(0, 1fr));
+  background: var(--ifm-color-emphasis-200);
+  gap: 1px;
+  padding: 1px;
+}
+
+[data-theme='dark'] .sponsorLogoGrid {
+  background: rgba(255, 255, 255, 0.08);
+}
+
+.sponsorLogoTile {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  min-width: 0;
+  min-height: 106px;
+  padding: 14px 10px;
+  flex-direction: column;
+  color: inherit;
+  background: var(--ifm-background-color);
+  text-align: center;
+  text-decoration: none !important;
+  transition: background 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
+}
+
+[data-theme='dark'] .sponsorLogoTile {
+  background: rgba(15, 17, 21, 0.78);
+}
+
+.sponsorLogoTile:hover,
+.sponsorLogoTile:focus-visible {
+  z-index: 1;
+  color: inherit;
+  background: rgba(82, 196, 26, 0.04);
+  box-shadow: inset 0 0 0 1px rgba(82, 196, 26, 0.5);
+  transform: translateY(-1px);
+}
+
+.sponsorLogoMark {
+  display: block;
+  max-width: 100%;
+  overflow-wrap: anywhere;
+  color: var(--ifm-color-primary);
+  font-size: 1.45rem;
+  font-weight: 850;
+  letter-spacing: 0;
+  line-height: 1.1;
+}
+
+.sponsorLogoTile:nth-child(2n) .sponsorLogoMark {
+  color: #ff7d00;
+}
+
+.sponsorLogoTile:nth-child(3n) .sponsorLogoMark {
+  color: #14c9c9;
+}
+
+.sponsorLogoTile:nth-child(4n) .sponsorLogoMark {
+  color: #722ed1;
+}
+
+.sponsorLogoTile:nth-child(5n) .sponsorLogoMark {
+  color: #52c41a;
+}
+
+.sponsorLogoName {
+  display: block;
+  max-width: 100%;
+  margin-top: 10px;
+  color: var(--ifm-color-content-secondary);
+  font-size: 0.86rem;
+  font-weight: 600;
+  line-height: 1.35;
+}
+
+.panel {
+  background: var(--ifm-background-color);
+  border: 1px solid var(--ifm-color-emphasis-200);
+  border-radius: 8px;
+  box-shadow: 0 12px 28px rgba(29, 33, 41, 0.06);
+}
+
+[data-theme='dark'] .panel {
+  background: rgba(255, 255, 255, 0.02);
+  border-color: rgba(255, 255, 255, 0.08);
+  box-shadow: none;
+}
+
+.communityGrid {
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  gap: 1rem;
+}
+
+.panel {
+  min-width: 0;
+  padding: 1.25rem;
+}
+
+.panelHeader {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 1rem;
+  margin-bottom: 1rem;
+  color: var(--ifm-color-content-secondary);
+  font-size: 12px;
+  font-weight: 750;
+  letter-spacing: 0;
+  text-transform: uppercase;
+}
+
+.panelHeader a {
+  color: var(--ifm-color-primary);
+  text-decoration: none !important;
+}
+
+.panelNote {
+  margin: -0.35rem 0 1rem;
+  color: var(--ifm-color-content-secondary);
+  font-size: 0.82rem;
+  line-height: 1.5;
+}
+
+.contributorList,
+.pathList {
+  display: grid;
+  gap: 10px;
+}
+
+.contributorCard,
+.pathItem {
+  display: grid;
+  min-width: 0;
+  color: inherit;
+  background: var(--ifm-color-emphasis-100);
+  border: 1px solid var(--ifm-color-emphasis-200);
+  border-radius: 8px;
+  text-decoration: none !important;
+  transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
+}
+
+.contributorCard:hover,
+.contributorCard:focus-visible,
+.pathItem:hover,
+.pathItem:focus-visible {
+  color: inherit;
+  background: var(--ifm-background-color);
+  border-color: var(--ifm-color-primary);
+  transform: translateY(-1px);
+}
+
+[data-theme='dark'] .contributorCard,
+[data-theme='dark'] .pathItem {
+  background: rgba(255, 255, 255, 0.03);
+  border-color: rgba(255, 255, 255, 0.08);
+}
+
+.contributorCard {
+  grid-template-columns: auto minmax(0, 1fr);
+  gap: 12px;
+  align-items: center;
+  padding: 12px;
+}
+
+.avatar {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 44px;
+  height: 44px;
+  color: #fff;
+  background: #165dff;
+  border-radius: 8px;
+  font-size: 13px;
+  font-weight: 800;
+}
+
+.avatarImage {
+  width: 44px;
+  height: 44px;
+  border: 1px solid var(--ifm-color-emphasis-200);
+  border-radius: 8px;
+  object-fit: cover;
+}
+
+.contributorCard:nth-child(2) .avatar {
+  background: #00a870;
+}
+
+.contributorCard:nth-child(3) .avatar {
+  background: #ff7d00;
+}
+
+.contributorBody {
+  display: grid;
+  min-width: 0;
+  gap: 2px;
+}
+
+.contributorBody strong {
+  color: var(--ifm-heading-color);
+  font-size: 0.98rem;
+}
+
+.contributorBody span {
+  color: var(--ifm-color-content);
+  font-size: 0.88rem;
+}
+
+.contributorBody em,
+.pathItem em {
+  color: var(--ifm-color-content-secondary);
+  font-size: 0.82rem;
+  font-style: normal;
+  line-height: 1.45;
+}
+
+.pathItem {
+  grid-template-columns: auto minmax(0, 1fr);
+  gap: 12px;
+  padding: 14px;
+}
+
+.pathIndex {
+  color: var(--ifm-color-primary);
+  font-family: var(--ifm-font-family-monospace);
+  font-size: 0.86rem;
+  font-weight: 800;
+}
+
+.pathItem strong {
+  display: block;
+  margin-bottom: 4px;
+  color: var(--ifm-heading-color);
+  font-size: 0.96rem;
+}
+
+@media (max-width: 996px) {
+  .section {
+    padding: 4rem 0;
+  }
+
+  .sectionTitle {
+    font-size: 2rem;
+  }
+
+  .communityGrid {
+    grid-template-columns: 1fr;
+  }
+
+  .sponsorLogoGrid {
+    grid-template-columns: repeat(3, minmax(0, 1fr));
+  }
+
+  .sponsorLogoTile {
+    min-height: 96px;
+  }
+}
+
+@media (max-width: 640px) {
+  .section {
+    padding: 3.25rem 0;
+  }
+
+  .sectionTitle {
+    font-size: 1.75rem;
+  }
+
+  .sponsorWallHeader {
+    display: grid;
+    min-height: auto;
+    padding: 1rem;
+  }
+
+  .sponsorWallAction {
+    justify-content: center;
+    width: 100%;
+  }
+
+  .sponsorLogoGrid {
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+  }
+
+  .sponsorLogoMark {
+    font-size: 1.15rem;
+  }
+
+  .panel {
+    padding: 1rem;
+  }
+}
+
+@media (prefers-reduced-motion: reduce) {
+  .sponsorWallAction,
+  .sponsorLogoTile,
+  .contributorCard,
+  .pathItem {
+    transition: none;
+  }
+}
--- a/docs-site/src/components/HomepageFeatures/index.tsx
+++ b/docs-site/src/components/HomepageFeatures/index.tsx
@@ -129,7 +129,7 @@ function Feature({title, description, icon, link}: FeatureItem) {
      {link && (
        <span className={styles.featureLink}>
          <Translate id="feat.learnMore">Learn more</Translate>
-          <span className={styles.featureArrow} aria-hidden="true">→</span>
+          <span className={styles.featureArrow} aria-hidden="true">-&gt;</span>
        </span>
      )}
    </>
--- a/docs-site/src/components/HomepageFeatures/styles.module.css
+++ b/docs-site/src/components/HomepageFeatures/styles.module.css
@@ -1,5 +1,6 @@
 .section {
-  padding: 6rem 0 4rem;
+  padding: 5.5rem 0 4.25rem;
+  background: var(--ifm-background-color);
 }

 .sectionHead {
@@ -9,14 +10,17 @@
 }

 .sectionTag {
-  display: inline-block;
+  display: inline-flex;
+  align-items: center;
+  min-height: 28px;
  font-size: 12px;
-  font-weight: 600;
-  letter-spacing: 0.15em;
+  font-weight: 750;
+  letter-spacing: 0;
  color: var(--ifm-color-primary);
  padding: 4px 12px;
  background: rgba(22, 93, 255, 0.08);
-  border-radius: 4px;
+  border: 1px solid rgba(22, 93, 255, 0.16);
+  border-radius: 8px;
  margin-bottom: 1rem;
 }

@@ -26,10 +30,10 @@
 }

 .sectionTitle {
-  font-size: clamp(1.8rem, 3vw, 2.5rem);
+  font-size: 2.35rem;
  line-height: 1.2;
-  letter-spacing: -0.02em;
-  font-weight: 700;
+  letter-spacing: 0;
+  font-weight: 750;
  margin: 0 0 1rem;
  color: var(--ifm-heading-color);
 }
@@ -51,6 +55,9 @@
  .section {
    padding: 3.5rem 0 2rem;
  }
+  .sectionTitle {
+    font-size: 2rem;
+  }
  .grid {
    grid-template-columns: 1fr;
  }
@@ -70,7 +77,7 @@
  padding: 1.75rem;
  background: var(--ifm-background-color);
  border: 1px solid var(--ifm-color-emphasis-200);
-  border-radius: 12px;
+  border-radius: 8px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  text-decoration: none !important;
  color: inherit;
@@ -78,7 +85,7 @@
 }

 .featureCardLink:hover {
-  transform: translateY(-3px);
+  transform: translateY(-2px);
  border-color: var(--ifm-color-primary);
  box-shadow: 0 12px 30px -8px rgba(22, 93, 255, 0.18);
  color: inherit;
@@ -99,26 +106,26 @@
 .iconWrap {
  width: 48px;
  height: 48px;
-  border-radius: 10px;
+  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
-  background: linear-gradient(135deg, rgba(22, 93, 255, 0.1) 0%, rgba(143, 75, 255, 0.08) 100%);
+  background: linear-gradient(135deg, rgba(22, 93, 255, 0.1) 0%, rgba(20, 201, 201, 0.12) 100%);
  color: var(--ifm-color-primary);
  margin-bottom: 1.25rem;
 }

 [data-theme='dark'] .iconWrap {
-  background: linear-gradient(135deg, rgba(96, 126, 255, 0.15) 0%, rgba(143, 75, 255, 0.12) 100%);
+  background: linear-gradient(135deg, rgba(96, 126, 255, 0.15) 0%, rgba(20, 201, 201, 0.12) 100%);
  color: var(--ifm-color-primary-lighter);
 }

 .featureTitle {
  font-size: 1.15rem;
-  font-weight: 600;
+  font-weight: 700;
  margin: 0 0 0.6rem;
  color: var(--ifm-heading-color);
-  letter-spacing: -0.01em;
+  letter-spacing: 0;
 }

 .featureDesc {
@@ -146,3 +153,17 @@
 .featureCardLink:hover .featureArrow {
  transform: translateX(4px);
 }
+
+@media (max-width: 640px) {
+  .sectionTitle {
+    font-size: 1.75rem;
+  }
+}
+
+@media (prefers-reduced-motion: reduce) {
+  .featureCard,
+  .featureCardLink,
+  .featureArrow {
+    transition: none;
+  }
+}
--- a/docs-site/src/components/HomepageShowcase/index.tsx
+++ b/docs-site/src/components/HomepageShowcase/index.tsx
@@ -110,7 +110,7 @@ export default function HomepageShowcase(): ReactNode {
            <p className={styles.captionDesc}>{current.description}</p>
            <Link to="/docs/getting-started/quick-start" className={styles.captionLink}>
              <Translate id="showcase.cta">Explore the docs</Translate>
-              <span aria-hidden="true"> →</span>
+              <span aria-hidden="true"> -&gt;</span>
            </Link>
          </div>
        </div>
--- a/docs-site/src/components/HomepageShowcase/styles.module.css
+++ b/docs-site/src/components/HomepageShowcase/styles.module.css
@@ -1,10 +1,14 @@
 .section {
-  padding: 4rem 0 6rem;
-  background: linear-gradient(180deg, transparent 0%, rgba(22, 93, 255, 0.03) 100%);
+  padding: 4.5rem 0 5.5rem;
+  background:
+    linear-gradient(180deg, rgba(245, 247, 250, 0) 0%, rgba(245, 247, 250, 0.72) 100%),
+    var(--ifm-background-color);
 }

 [data-theme='dark'] .section {
-  background: linear-gradient(180deg, transparent 0%, rgba(64, 128, 255, 0.04) 100%);
+  background:
+    linear-gradient(180deg, rgba(15, 17, 21, 0) 0%, rgba(255, 255, 255, 0.03) 100%),
+    var(--ifm-background-color);
 }

 .sectionHead {
@@ -14,26 +18,30 @@
 }

 .sectionTag {
-  display: inline-block;
+  display: inline-flex;
+  align-items: center;
+  min-height: 28px;
  font-size: 12px;
-  font-weight: 600;
-  letter-spacing: 0.15em;
-  color: #8f4bff;
+  font-weight: 750;
+  letter-spacing: 0;
+  color: #0e7490;
  padding: 4px 12px;
-  background: rgba(143, 75, 255, 0.08);
-  border-radius: 4px;
+  background: rgba(20, 201, 201, 0.1);
+  border: 1px solid rgba(20, 201, 201, 0.2);
+  border-radius: 8px;
  margin-bottom: 1rem;
 }

 [data-theme='dark'] .sectionTag {
-  background: rgba(143, 75, 255, 0.18);
+  background: rgba(20, 201, 201, 0.16);
+  color: #67e8f9;
 }

 .sectionTitle {
-  font-size: clamp(1.8rem, 3vw, 2.5rem);
+  font-size: 2.35rem;
  line-height: 1.2;
-  letter-spacing: -0.02em;
-  font-weight: 700;
+  letter-spacing: 0;
+  font-weight: 750;
  margin: 0 0 1rem;
  color: var(--ifm-heading-color);
 }
@@ -49,34 +57,39 @@
 .tabs {
  display: flex;
  justify-content: center;
-  gap: 8px;
+  gap: 6px;
  margin-bottom: 2rem;
  flex-wrap: wrap;
+  padding: 6px;
+  background: var(--ifm-color-emphasis-100);
+  border: 1px solid var(--ifm-color-emphasis-200);
+  border-radius: 8px;
 }

 .tabBtn {
+  min-height: 40px;
  padding: 8px 18px;
  background: transparent;
-  border: 1px solid var(--ifm-color-emphasis-300);
-  border-radius: 999px;
+  border: 1px solid transparent;
+  border-radius: 8px;
  color: var(--ifm-color-content-secondary);
  font-size: 14px;
-  font-weight: 500;
+  font-weight: 650;
  cursor: pointer;
-  transition: all 0.2s ease;
+  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
 }

 .tabBtn:hover {
  color: var(--ifm-color-primary);
-  border-color: var(--ifm-color-primary);
+  background: var(--ifm-background-color);
 }

 .tabBtnActive,
 .tabBtnActive:hover {
-  background: linear-gradient(90deg, #165dff 0%, #4080ff 100%);
-  color: #fff !important;
-  border-color: transparent;
-  box-shadow: 0 4px 14px rgba(22, 93, 255, 0.3);
+  background: var(--ifm-background-color);
+  color: var(--ifm-color-primary) !important;
+  border-color: rgba(22, 93, 255, 0.18);
+  box-shadow: 0 6px 16px rgba(22, 93, 255, 0.12);
 }

 /* Stage */
@@ -96,10 +109,10 @@

 .browser {
  background: var(--ifm-background-color);
-  border-radius: 12px;
+  border-radius: 8px;
  overflow: hidden;
  box-shadow:
-    0 30px 60px -20px rgba(22, 93, 255, 0.25),
+    0 24px 58px -22px rgba(22, 93, 255, 0.28),
    0 0 0 1px var(--ifm-color-emphasis-200);
 }

@@ -137,7 +150,7 @@
  margin: 0 auto;
  padding: 3px 14px;
  background: var(--ifm-background-color);
-  border-radius: 999px;
+  border-radius: 8px;
  font-size: 12px;
  color: var(--ifm-color-content-secondary);
  font-family: 'SFMono-Regular', Menlo, monospace;
@@ -169,8 +182,8 @@
 .captionTitle {
  font-size: 1.7rem;
  line-height: 1.2;
-  letter-spacing: -0.02em;
-  font-weight: 700;
+  letter-spacing: 0;
+  font-weight: 750;
  margin: 0 0 1rem;
  color: var(--ifm-heading-color);
 }
@@ -186,11 +199,49 @@
  display: inline-flex;
  align-items: center;
  gap: 4px;
-  font-weight: 500;
+  min-height: 40px;
+  padding: 0 12px;
+  border: 1px solid rgba(22, 93, 255, 0.18);
+  border-radius: 8px;
+  font-weight: 650;
  color: var(--ifm-color-primary);
  text-decoration: none !important;
+  transition: border-color 0.2s ease, background 0.2s ease;
 }

 .captionLink:hover {
  color: var(--ifm-color-primary-dark);
+  background: rgba(22, 93, 255, 0.06);
+  border-color: var(--ifm-color-primary);
+}
+
+@media (max-width: 996px) {
+  .sectionTitle {
+    font-size: 2rem;
+  }
+}
+
+@media (max-width: 640px) {
+  .section {
+    padding: 3.25rem 0 4rem;
+  }
+
+  .sectionTitle {
+    font-size: 1.75rem;
+  }
+
+  .tabs {
+    justify-content: stretch;
+  }
+
+  .tabBtn {
+    flex: 1 1 130px;
+  }
+}
+
+@media (prefers-reduced-motion: reduce) {
+  .tabBtn,
+  .captionLink {
+    transition: none;
+  }
 }
--- a/docs-site/src/css/custom.css
+++ b/docs-site/src/css/custom.css
@@ -16,14 +16,15 @@
  /* Surfaces */
  --ifm-background-color: #ffffff;
  --ifm-background-surface-color: #ffffff;
-  --ifm-color-emphasis-100: #f7f9fc;
-  --ifm-color-emphasis-200: #eef1f6;
-  --ifm-color-emphasis-300: #dde3ec;
+  --ifm-color-emphasis-100: #f5f7fa;
+  --ifm-color-emphasis-200: #e5e6eb;
+  --ifm-color-emphasis-300: #c9cdd4;
+  --ifm-color-emphasis-400: #a9aeb8;

  /* Typography */
  --ifm-font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --ifm-font-family-monospace: 'SFMono-Regular', Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
-  --ifm-heading-font-weight: 600;
+  --ifm-heading-font-weight: 700;
  --ifm-code-font-size: 92%;
  --ifm-h1-font-size: 2.25rem;
  --ifm-h2-font-size: 1.75rem;
@@ -33,10 +34,11 @@
  --ifm-color-content: #1d2129;
  --ifm-color-content-secondary: #4e5969;
  --ifm-heading-color: #1d2129;
+  --ifm-global-radius: 8px;

  /* Navbar */
  --ifm-navbar-height: 64px;
-  --ifm-navbar-background-color: rgba(255, 255, 255, 0.82);
+  --ifm-navbar-background-color: rgba(255, 255, 255, 0.9);
  --ifm-navbar-link-color: #4e5969;
  --ifm-navbar-link-hover-color: var(--ifm-color-primary);

@@ -64,15 +66,16 @@

  --ifm-background-color: #0f1115;
  --ifm-background-surface-color: #16181d;
-  --ifm-color-emphasis-100: #1a1d23;
-  --ifm-color-emphasis-200: #23272f;
-  --ifm-color-emphasis-300: #2e343d;
+  --ifm-color-emphasis-100: #1d2129;
+  --ifm-color-emphasis-200: #272e3b;
+  --ifm-color-emphasis-300: #384252;
+  --ifm-color-emphasis-400: #4e5969;

  --ifm-color-content: #e6e9ef;
  --ifm-color-content-secondary: #9aa3b2;
  --ifm-heading-color: #f0f2f5;

-  --ifm-navbar-background-color: rgba(15, 17, 21, 0.82);
+  --ifm-navbar-background-color: rgba(15, 17, 21, 0.9);
  --ifm-navbar-link-color: #c9d1db;

  --ifm-menu-color: #c9d1db;
@@ -97,7 +100,7 @@

 .navbar__title {
  font-weight: 700;
-  letter-spacing: -0.01em;
+  letter-spacing: 0;
 }

 .navbar__link {
@@ -105,10 +108,26 @@
  font-size: 14px;
 }

+.navbar__link,
+.button,
+a {
+  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
+}
+
+.button {
+  border-radius: 8px;
+  font-weight: 650;
+}
+
+:focus-visible {
+  outline: 2px solid var(--ifm-color-primary);
+  outline-offset: 2px;
+}
+
 /* Sidebar tweaks */
 .menu__link {
  font-size: 14px;
-  border-radius: 6px;
+  border-radius: 8px;
  padding: 6px 10px;
  line-height: 1.4;
 }
@@ -226,9 +245,20 @@ code {
 }

 ::-webkit-scrollbar-thumb:hover {
-  background: var(--ifm-color-emphasis-400, #adb5bd);
+  background: var(--ifm-color-emphasis-400);
 }

 [data-theme='dark'] ::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
 }
+
+@media (prefers-reduced-motion: reduce) {
+  *,
+  *::before,
+  *::after {
+    animation-duration: 0.01ms !important;
+    animation-iteration-count: 1 !important;
+    scroll-behavior: auto !important;
+    transition-duration: 0.01ms !important;
+  }
+}
--- a/docs-site/src/pages/community.tsx
+++ b/docs-site/src/pages/community.tsx
@@ -0,0 +1,19 @@
+import type {ReactNode} from 'react';
+import {translate} from '@docusaurus/Translate';
+import Layout from '@theme/Layout';
+import HomepageCommunity from '@site/src/components/HomepageCommunity';
+
+export default function Community(): ReactNode {
+  return (
+    <Layout
+      title={translate({id: 'community.pageTitle', message: 'Community, sponsors and contributors'})}
+      description={translate({
+        id: 'community.pageDescription',
+        message: 'Sponsor BackupX, meet contributors, and find practical ways to contribute.',
+      })}>
+      <main>
+        <HomepageCommunity />
+      </main>
+    </Layout>
+  );
+}
--- a/docs-site/src/pages/index.module.css
+++ b/docs-site/src/pages/index.module.css
@@ -1,48 +1,42 @@
-/* ── Hero ───────────────────────────────────────────── */
+/* Hero */
 .hero {
  position: relative;
-  padding: 7rem 0 6rem;
  overflow: hidden;
-  background: var(--bx-hero-bg);
+  padding: 7rem 0 5.5rem;
+  background:
+    linear-gradient(180deg, rgba(22, 93, 255, 0.08) 0%, rgba(255, 255, 255, 0) 72%),
+    linear-gradient(90deg, rgba(20, 201, 201, 0.08) 0%, rgba(250, 173, 20, 0.08) 100%),
+    var(--ifm-background-color);
 }

-.heroBg {
+.hero::before {
  position: absolute;
  inset: 0;
-  background:
-    radial-gradient(circle at 15% 20%, rgba(104, 127, 255, 0.18) 0%, transparent 45%),
-    radial-gradient(circle at 85% 70%, rgba(22, 93, 255, 0.15) 0%, transparent 50%),
-    linear-gradient(180deg, #f7f9ff 0%, #ffffff 100%);
-  z-index: 0;
+  content: "";
+  pointer-events: none;
+  background-image:
+    linear-gradient(rgba(22, 93, 255, 0.06) 1px, transparent 1px),
+    linear-gradient(90deg, rgba(22, 93, 255, 0.06) 1px, transparent 1px);
+  background-size: 44px 44px;
+  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.75), transparent 82%);
 }

-[data-theme='dark'] .heroBg {
+[data-theme='dark'] .hero {
  background:
-    radial-gradient(circle at 15% 20%, rgba(96, 126, 255, 0.22) 0%, transparent 45%),
-    radial-gradient(circle at 85% 70%, rgba(118, 70, 255, 0.18) 0%, transparent 50%),
-    linear-gradient(180deg, #0f1115 0%, #0b0d10 100%);
+    linear-gradient(180deg, rgba(64, 128, 255, 0.16) 0%, rgba(15, 17, 21, 0) 72%),
+    linear-gradient(90deg, rgba(20, 201, 201, 0.1) 0%, rgba(250, 173, 20, 0.08) 100%),
+    var(--ifm-background-color);
 }

 .heroInner {
  position: relative;
  z-index: 1;
  display: grid;
-  grid-template-columns: 1.1fr 1fr;
+  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.9fr);
  gap: 4rem;
  align-items: center;
 }

-@media (max-width: 996px) {
-  .hero {
-    padding: 4rem 0 3rem;
-  }
-  .heroInner {
-    grid-template-columns: 1fr;
-    gap: 2.5rem;
-    text-align: left;
-  }
-}
-
 .heroContent {
  display: flex;
  flex-direction: column;
@@ -54,137 +48,144 @@
  display: inline-flex;
  align-items: center;
  gap: 8px;
-  padding: 4px 14px;
-  background: rgba(22, 93, 255, 0.08);
-  border: 1px solid rgba(22, 93, 255, 0.15);
-  border-radius: 999px;
-  font-size: 13px;
+  min-height: 32px;
+  padding: 5px 12px;
  color: var(--ifm-color-primary);
-  font-weight: 500;
+  background: rgba(22, 93, 255, 0.09);
+  border: 1px solid rgba(22, 93, 255, 0.2);
+  border-radius: 8px;
+  font-size: 13px;
+  font-weight: 600;
 }

 [data-theme='dark'] .badge {
-  background: rgba(96, 126, 255, 0.15);
-  border-color: rgba(96, 126, 255, 0.3);
+  background: rgba(64, 128, 255, 0.16);
+  border-color: rgba(64, 128, 255, 0.3);
  color: var(--ifm-color-primary-lighter);
 }

 .badgeDot {
-  width: 6px;
-  height: 6px;
-  background: var(--ifm-color-primary);
+  width: 7px;
+  height: 7px;
+  background: #00b42a;
  border-radius: 50%;
-  box-shadow: 0 0 0 4px rgba(22, 93, 255, 0.18);
-  animation: pulse 2s infinite;
-}
-
-@keyframes pulse {
-  0%, 100% { opacity: 1; }
-  50% { opacity: 0.5; }
+  box-shadow: 0 0 0 4px rgba(0, 180, 42, 0.12);
 }

 .heroTitle {
-  font-size: clamp(2.25rem, 4vw, 3.4rem);
-  line-height: 1.15;
-  letter-spacing: -0.025em;
-  font-weight: 700;
  margin: 0;
  color: var(--ifm-heading-color);
+  font-size: 3.45rem;
+  font-weight: 750;
+  letter-spacing: 0;
+  line-height: 1.08;
 }

 .heroTitleAccent {
  display: block;
-  background: linear-gradient(90deg, #4080ff 0%, #8f4bff 100%);
-  -webkit-background-clip: text;
-  -webkit-text-fill-color: transparent;
-  background-clip: text;
-  margin-top: 6px;
+  margin-top: 8px;
+  color: var(--ifm-color-primary);
 }

 .heroSubtitle {
-  font-size: 1.15rem;
-  line-height: 1.65;
-  color: var(--ifm-color-content-secondary);
-  max-width: 540px;
+  max-width: 640px;
  margin: 0;
+  color: var(--ifm-color-content-secondary);
+  font-size: 1.15rem;
+  line-height: 1.72;
 }

 .actions {
  display: flex;
+  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
-  flex-wrap: wrap;
+}
+
+.primaryBtn,
+.secondaryBtn {
+  min-height: 46px;
+  border-radius: 8px;
+  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease, background 0.2s ease;
 }

 .primaryBtn {
-  background: linear-gradient(90deg, #165dff 0%, #4080ff 100%);
-  border: none;
-  color: #fff;
  display: inline-flex;
  align-items: center;
-  gap: 6px;
-  font-weight: 600;
-  box-shadow: 0 6px 20px rgba(22, 93, 255, 0.3);
-  transition: transform 0.2s ease, box-shadow 0.2s ease;
+  gap: 8px;
+  color: #fff;
+  background: #165dff;
+  border: 1px solid #165dff;
+  box-shadow: 0 10px 24px rgba(22, 93, 255, 0.24);
+  font-weight: 650;
 }

-.primaryBtn:hover {
-  transform: translateY(-1px);
-  box-shadow: 0 10px 25px rgba(22, 93, 255, 0.4);
+.primaryBtn:hover,
+.primaryBtn:focus-visible {
  color: #fff;
+  background: #0e4fe6;
+  border-color: #0e4fe6;
+  box-shadow: 0 14px 30px rgba(22, 93, 255, 0.3);
+  transform: translateY(-1px);
 }

 .btnArrow {
  transition: transform 0.2s ease;
 }

-.primaryBtn:hover .btnArrow {
-  transform: translateX(4px);
+.primaryBtn:hover .btnArrow,
+.primaryBtn:focus-visible .btnArrow {
+  transform: translateX(3px);
 }

 .secondaryBtn {
-  background: var(--ifm-background-color);
-  border: 1px solid var(--ifm-color-emphasis-300);
-  color: var(--ifm-font-color-base);
  display: inline-flex;
  align-items: center;
-  font-weight: 500;
-  transition: all 0.2s ease;
+  color: var(--ifm-font-color-base);
+  background: var(--ifm-background-color);
+  border: 1px solid var(--ifm-color-emphasis-300);
+  font-weight: 600;
 }

-.secondaryBtn:hover {
-  border-color: var(--ifm-color-primary);
+.secondaryBtn:hover,
+.secondaryBtn:focus-visible {
  color: var(--ifm-color-primary);
+  border-color: var(--ifm-color-primary);
  background: var(--ifm-background-color);
+  transform: translateY(-1px);
 }

 .metrics {
  display: flex;
  align-items: center;
-  gap: 1.75rem;
-  padding-top: 1.5rem;
+  gap: 1.5rem;
  margin-top: 0.5rem;
+  padding-top: 1.25rem;
 }

 .metric {
  display: flex;
+  min-width: 0;
  flex-direction: column;
-  gap: 2px;
+  gap: 4px;
 }

 .metricValue {
-  font-size: 1.6rem;
-  font-weight: 700;
  color: var(--ifm-heading-color);
+  font-size: 1.35rem;
+  font-weight: 750;
+  letter-spacing: 0;
  line-height: 1.1;
-  letter-spacing: -0.02em;
+  white-space: nowrap;
 }

 .metricLabel {
-  font-size: 12px;
  color: var(--ifm-color-content-secondary);
+  font-size: 12px;
+  font-weight: 600;
+  letter-spacing: 0;
+  line-height: 1.35;
  text-transform: uppercase;
-  letter-spacing: 0.05em;
 }

 .metricDivider {
@@ -193,81 +194,277 @@
  background: var(--ifm-color-emphasis-300);
 }

-/* ── Code window (macOS-style) ─────────────────────── */
-.heroCode {
-  position: relative;
+/* Product visual */
+.heroVisual {
+  display: grid;
+  gap: 1rem;
 }

-.codeWindow {
-  background: #0f1622;
-  border-radius: 12px;
-  box-shadow:
-    0 20px 50px -10px rgba(15, 22, 34, 0.35),
-    0 0 0 1px rgba(255, 255, 255, 0.05);
+.consolePanel {
  overflow: hidden;
-  border: 1px solid rgba(255, 255, 255, 0.06);
+  background: rgba(255, 255, 255, 0.92);
+  border: 1px solid rgba(22, 93, 255, 0.16);
+  border-radius: 8px;
+  box-shadow: 0 24px 60px rgba(29, 33, 41, 0.12);
 }

-[data-theme='light'] .codeWindow {
-  box-shadow: 0 20px 50px -10px rgba(22, 93, 255, 0.2), 0 0 0 1px rgba(22, 93, 255, 0.06);
+[data-theme='dark'] .consolePanel {
+  background: rgba(22, 24, 29, 0.9);
+  border-color: rgba(255, 255, 255, 0.08);
+  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.34);
 }

-.codeHeader {
+.consoleHeader {
  display: flex;
-  align-items: center;
-  gap: 6px;
-  padding: 10px 14px;
-  background: #161f2e;
-  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
+  align-items: flex-start;
+  justify-content: space-between;
+  gap: 1rem;
+  padding: 1.25rem;
+  border-bottom: 1px solid var(--ifm-color-emphasis-200);
 }

-.codeDot {
-  width: 11px;
-  height: 11px;
-  border-radius: 50%;
+[data-theme='dark'] .consoleHeader {
+  border-bottom-color: rgba(255, 255, 255, 0.08);
 }

-.codeDotRed { background: #ff5f56; }
-.codeDotYellow { background: #ffbd2e; }
-.codeDotGreen { background: #27c93f; }
+.consoleHeader strong {
+  display: block;
+  margin-top: 4px;
+  color: var(--ifm-heading-color);
+  font-size: 1.2rem;
+}

-.codeTitle {
-  margin-left: auto;
-  font-size: 11px;
-  color: #7b8696;
-  letter-spacing: 0.05em;
+.consoleEyebrow {
+  color: var(--ifm-color-content-secondary);
+  font-size: 12px;
+  font-weight: 650;
+  letter-spacing: 0;
  text-transform: uppercase;
 }

-.codeBody {
-  margin: 0;
-  padding: 18px 20px;
-  font-family: 'SFMono-Regular', Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
-  font-size: 13px;
-  line-height: 1.65;
-  color: #e1e7ef;
-  background: transparent;
+.consoleStatus {
+  display: inline-flex;
+  align-items: center;
+  min-height: 28px;
+  padding: 4px 10px;
+  color: #00a870;
+  background: rgba(0, 180, 42, 0.1);
+  border: 1px solid rgba(0, 180, 42, 0.2);
+  border-radius: 8px;
+  font-size: 12px;
+  font-weight: 700;
+}
+
+.consoleGrid {
+  display: grid;
+  grid-template-columns: repeat(3, minmax(0, 1fr));
+  border-bottom: 1px solid var(--ifm-color-emphasis-200);
+}
+
+[data-theme='dark'] .consoleGrid {
+  border-bottom-color: rgba(255, 255, 255, 0.08);
+}
+
+.consoleGrid > div {
+  min-width: 0;
+  padding: 1.1rem 1.25rem;
+  border-right: 1px solid var(--ifm-color-emphasis-200);
+}
+
+[data-theme='dark'] .consoleGrid > div {
+  border-right-color: rgba(255, 255, 255, 0.08);
+}
+
+.consoleGrid > div:last-child {
+  border-right: 0;
+}
+
+.consoleGrid strong {
+  display: block;
+  margin-top: 6px;
+  color: var(--ifm-heading-color);
+  font-size: 1.45rem;
+  line-height: 1.1;
+}
+
+.consoleLabel {
+  display: block;
+  color: var(--ifm-color-content-secondary);
+  font-size: 12px;
+  font-weight: 650;
+}
+
+.timeline {
+  display: grid;
+}
+
+.timelineRow {
+  display: grid;
+  grid-template-columns: auto minmax(0, 1fr) auto;
+  gap: 12px;
+  align-items: center;
+  padding: 1rem 1.25rem;
+  border-bottom: 1px solid var(--ifm-color-emphasis-200);
+}
+
+[data-theme='dark'] .timelineRow {
+  border-bottom-color: rgba(255, 255, 255, 0.08);
+}
+
+.timelineRow:last-child {
+  border-bottom: 0;
+}
+
+.timelineRow strong,
+.timelineRow span {
+  display: block;
+}
+
+.timelineRow strong {
+  color: var(--ifm-heading-color);
+  font-size: 0.95rem;
+  font-weight: 700;
+}
+
+.timelineRow span {
+  color: var(--ifm-color-content-secondary);
+  font-size: 0.85rem;
+  line-height: 1.5;
+}
+
+.timelineRow em {
+  color: var(--ifm-color-content-secondary);
+  font-size: 0.8rem;
+  font-style: normal;
+  font-weight: 650;
+  white-space: nowrap;
+}
+
+.timelineDotOk,
+.timelineDotInfo,
+.timelineDotWarn {
+  width: 10px;
+  height: 10px;
+  border-radius: 50%;
+}
+
+.timelineDotOk {
+  background: #00b42a;
+}
+
+.timelineDotInfo {
+  background: #165dff;
+}
+
+.timelineDotWarn {
+  background: #ff7d00;
+}
+
+.commandCard {
+  display: grid;
+  gap: 8px;
+  padding: 1rem 1.1rem;
+  background: #111827;
+  border: 1px solid rgba(255, 255, 255, 0.08);
+  border-radius: 8px;
+  box-shadow: 0 16px 34px rgba(17, 24, 39, 0.18);
+}
+
+.commandTitle {
+  color: #9ca3af;
+  font-size: 12px;
+  font-weight: 650;
+  letter-spacing: 0;
+  text-transform: uppercase;
+}
+
+.commandCard code {
  overflow-x: auto;
-}
-
-.codeBody code {
+  color: #e5e7eb;
  background: transparent;
-  padding: 0;
  border: 0;
-  color: inherit;
+  padding: 0;
+  font-size: 13px;
+  white-space: nowrap;
 }

-.codePrompt {
-  color: #4080ff;
-  margin-right: 6px;
-  user-select: none;
+@media (max-width: 996px) {
+  .hero {
+    padding: 4.5rem 0 3.5rem;
+  }
+
+  .heroInner {
+    grid-template-columns: 1fr;
+    gap: 2.25rem;
+  }
+
+  .heroTitle {
+    font-size: 2.45rem;
+  }
 }

-.codeComment {
-  color: #6e7889;
-  font-style: italic;
+@media (max-width: 640px) {
+  .hero {
+    padding: 3.75rem 0 2.75rem;
+  }
+
+  .heroTitle {
+    font-size: 2.05rem;
+  }
+
+  .heroSubtitle {
+    font-size: 1rem;
+  }
+
+  .actions {
+    width: 100%;
+  }
+
+  .primaryBtn,
+  .secondaryBtn {
+    width: 100%;
+    justify-content: center;
+  }
+
+  .metrics {
+    width: 100%;
+    align-items: stretch;
+    gap: 0.85rem;
+    flex-direction: column;
+  }
+
+  .metricDivider {
+    width: 100%;
+    height: 1px;
+  }
+
+  .consoleHeader,
+  .timelineRow {
+    padding: 1rem;
+  }
+
+  .consoleGrid {
+    grid-template-columns: 1fr;
+  }
+
+  .consoleGrid > div {
+    border-right: 0;
+    border-bottom: 1px solid var(--ifm-color-emphasis-200);
+  }
+
+  .consoleGrid > div:last-child {
+    border-bottom: 0;
+  }
+
+  [data-theme='dark'] .consoleGrid > div {
+    border-bottom-color: rgba(255, 255, 255, 0.08);
+  }
 }

-.codeString {
-  color: #82d1ff;
+@media (prefers-reduced-motion: reduce) {
+  .primaryBtn,
+  .secondaryBtn,
+  .btnArrow {
+    transition: none;
+  }
 }
--- a/docs-site/src/pages/index.tsx
+++ b/docs-site/src/pages/index.tsx
@@ -7,34 +7,34 @@ import Layout from '@theme/Layout';
 import Heading from '@theme/Heading';
 import HomepageFeatures from '@site/src/components/HomepageFeatures';
 import HomepageShowcase from '@site/src/components/HomepageShowcase';
+import HomepageCommunity from '@site/src/components/HomepageCommunity';

 import styles from './index.module.css';

 function HomepageHeader() {
  return (
    <header className={styles.hero}>
-      <div className={styles.heroBg} aria-hidden="true" />
      <div className={clsx('container', styles.heroInner)}>
        <div className={styles.heroContent}>
          <div className={styles.badge}>
            <span className={styles.badgeDot} />
-            <Translate id="home.badge">Open-source · v1.6.0</Translate>
+            <Translate id="home.badge">Open-source backup control plane · v2.2.1</Translate>
          </div>
          <Heading as="h1" className={styles.heroTitle}>
-            <Translate id="home.title.part1">Self-hosted backup management</Translate>
+            <Translate id="home.title.part1">Backup orchestration</Translate>
            <span className={styles.heroTitleAccent}>
-              <Translate id="home.title.part2">for every server.</Translate>
+              <Translate id="home.title.part2">for self-hosted servers.</Translate>
            </span>
          </Heading>
          <p className={styles.heroSubtitle}>
            <Translate id="home.tagline">
-              One binary, one command. File / database / SAP HANA backups routed to 70+ storage backends.
+              Run file, database, SAP HANA and remote-node backups from one clean console. Keep the control plane yours, keep the storage flexible.
            </Translate>
          </p>
          <div className={styles.actions}>
            <Link className={clsx('button button--primary button--lg', styles.primaryBtn)} to="/docs/getting-started/quick-start">
              <Translate id="home.getStarted">Get Started</Translate>
-              <span className={styles.btnArrow} aria-hidden="true">→</span>
+              <span className={styles.btnArrow} aria-hidden="true">-&gt;</span>
            </Link>
            <Link className={clsx('button button--lg', styles.secondaryBtn)} to="https://github.com/Awuqing/BackupX">
              <svg width="18" height="18" viewBox="0 0 16 16" fill="currentColor" aria-hidden="true" style={{marginRight: 6}}>
@@ -52,9 +52,9 @@ function HomepageHeader() {
            </div>
            <div className={styles.metricDivider} />
            <div className={styles.metric}>
-              <div className={styles.metricValue}>5</div>
+              <div className={styles.metricValue}>Agent</div>
              <div className={styles.metricLabel}>
-                <Translate id="home.metric.backupTypes">Backup types</Translate>
+                <Translate id="home.metric.backupTypes">Remote execution</Translate>
              </div>
            </div>
            <div className={styles.metricDivider} />
@@ -66,29 +66,85 @@ function HomepageHeader() {
            </div>
          </div>
        </div>
-        <div className={styles.heroCode}>
-          <div className={styles.codeWindow}>
-            <div className={styles.codeHeader}>
-              <span className={clsx(styles.codeDot, styles.codeDotRed)} />
-              <span className={clsx(styles.codeDot, styles.codeDotYellow)} />
-              <span className={clsx(styles.codeDot, styles.codeDotGreen)} />
-              <span className={styles.codeTitle}>bash</span>
+        <div className={styles.heroVisual}>
+          <div className={styles.consolePanel}>
+            <div className={styles.consoleHeader}>
+              <div>
+                <span className={styles.consoleEyebrow}>
+                  <Translate id="home.visual.eyebrow">BackupX Console</Translate>
+                </span>
+                <strong>
+                  <Translate id="home.visual.title">Operations overview</Translate>
+                </strong>
+              </div>
+              <span className={styles.consoleStatus}>
+                <Translate id="home.visual.status">Healthy</Translate>
+              </span>
            </div>
-            <pre className={styles.codeBody}>
-              <code>
-                <span className={styles.codeComment}># Docker one-liner</span>{'\n'}
-                <span className={styles.codePrompt}>$</span> docker run -d --name backupx \{'\n'}
-                {'    '}-p 8340:8340 \{'\n'}
-                {'    '}-v backupx-data:/app/data \{'\n'}
-                {'    '}awuqing/backupx:latest{'\n'}
-                {'\n'}
-                <span className={styles.codeComment}># Open http://localhost:8340</span>{'\n'}
-                <span className={styles.codeComment}># Deploy an Agent on a remote host</span>{'\n'}
-                <span className={styles.codePrompt}>$</span> backupx agent \{'\n'}
-                {'    '}--master <span className={styles.codeString}>http://master:8340</span> \{'\n'}
-                {'    '}--token <span className={styles.codeString}>&lt;token&gt;</span>
-              </code>
-            </pre>
+            <div className={styles.consoleGrid}>
+              <div>
+                <span className={styles.consoleLabel}>
+                  <Translate id="home.visual.success">Success rate</Translate>
+                </span>
+                <strong>99.4%</strong>
+              </div>
+              <div>
+                <span className={styles.consoleLabel}>
+                  <Translate id="home.visual.nodes">Active nodes</Translate>
+                </span>
+                <strong>12</strong>
+              </div>
+              <div>
+                <span className={styles.consoleLabel}>
+                  <Translate id="home.visual.targets">Storage targets</Translate>
+                </span>
+                <strong>8</strong>
+              </div>
+            </div>
+            <div className={styles.timeline}>
+              <div className={styles.timelineRow}>
+                <span className={styles.timelineDotOk} />
+                <div>
+                  <strong>
+                    <Translate id="home.visual.row1.title">PostgreSQL nightly</Translate>
+                  </strong>
+                  <span>
+                    <Translate id="home.visual.row1.desc">Encrypted archive uploaded to S3</Translate>
+                  </span>
+                </div>
+                <em>02:10</em>
+              </div>
+              <div className={styles.timelineRow}>
+                <span className={styles.timelineDotInfo} />
+                <div>
+                  <strong>
+                    <Translate id="home.visual.row2.title">SAP HANA snapshot</Translate>
+                  </strong>
+                  <span>
+                    <Translate id="home.visual.row2.desc">Running on agent-shanghai-02</Translate>
+                  </span>
+                </div>
+                <em>68%</em>
+              </div>
+              <div className={styles.timelineRow}>
+                <span className={styles.timelineDotWarn} />
+                <div>
+                  <strong>
+                    <Translate id="home.visual.row3.title">Retention cleanup</Translate>
+                  </strong>
+                  <span>
+                    <Translate id="home.visual.row3.desc">Next run in 4 hours</Translate>
+                  </span>
+                </div>
+                <em>queued</em>
+              </div>
+            </div>
+          </div>
+          <div className={styles.commandCard}>
+            <div className={styles.commandTitle}>
+              <Translate id="home.command.title">Start with Docker</Translate>
+            </div>
+            <code>docker run -d -p 8340:8340 awuqing/backupx:v2.2.1</code>
          </div>
        </div>
      </div>
@@ -100,12 +156,13 @@ export default function Home(): ReactNode {
  const {siteConfig} = useDocusaurusContext();
  return (
    <Layout
-      title={translate({id: 'home.pageTitle', message: 'Self-hosted backup management'})}
+      title={translate({id: 'home.pageTitle', message: 'Backup orchestration for self-hosted servers'})}
      description={siteConfig.tagline}>
      <HomepageHeader />
      <main>
        <HomepageFeatures />
        <HomepageShowcase />
+        <HomepageCommunity />
      </main>
    </Layout>
  );
--- a/docs-site/src/pages/sponsors.tsx
+++ b/docs-site/src/pages/sponsors.tsx
@@ -0,0 +1,39 @@
+import type {ReactNode} from 'react';
+import {translate} from '@docusaurus/Translate';
+import Translate from '@docusaurus/Translate';
+import Layout from '@theme/Layout';
+import Heading from '@theme/Heading';
+import {HomepageSponsors} from '@site/src/components/HomepageCommunity';
+import styles from '@site/src/components/HomepageCommunity/styles.module.css';
+
+export default function Sponsors(): ReactNode {
+  return (
+    <Layout
+      title={translate({id: 'sponsors.pageTitle', message: 'Sponsors'})}
+      description={translate({
+        id: 'sponsors.pageDescription',
+        message: 'Sponsor BackupX reliability, documentation, storage compatibility and long-term maintenance.',
+      })}>
+      <main>
+        <section className={styles.section}>
+          <div className="container">
+            <div className={styles.sectionHead}>
+              <div className={styles.sectionTag}>
+                <Translate id="sponsors.tag">SPONSORS</Translate>
+              </div>
+              <Heading as="h1" className={styles.sectionTitle}>
+                <Translate id="sponsors.title">Sponsor the BackupX ecosystem</Translate>
+              </Heading>
+              <p className={styles.sectionSubtitle}>
+                <Translate id="sponsors.subtitle">
+                  Sponsorship helps keep BackupX practical for real operators: tested storage providers, reliable releases, restore confidence and better documentation.
+                </Translate>
+              </p>
+            </div>
+            <HomepageSponsors />
+          </div>
+        </section>
+      </main>
+    </Layout>
+  );
+}
--- a/server/config.example.yaml
+++ b/server/config.example.yaml
@@ -3,6 +3,9 @@ server:
  host: "0.0.0.0"
  port: 8340
  mode: "release"              # debug | release
+  external_url: ""             # 可选：Master 对 Agent 可达的 URL，例如 https://backup.example.com
+  web_root: ""                 # 前端静态目录；留空自动探测（./web、/opt/backupx/web 等）。
+                               # 命中后后端直接托管 Web 控制台，无需额外 nginx 反向代理。

 database:
  path: "./data/backupx.db"    # SQLite 数据库路径
--- a/server/go.mod
+++ b/server/go.mod
@@ -6,12 +6,15 @@ require (
 	github.com/gin-gonic/gin v1.10.1
 	github.com/glebarez/sqlite v1.11.0
 	github.com/golang-jwt/jwt/v5 v5.3.0
+	github.com/klauspost/compress v1.18.1
 	github.com/natefinch/lumberjack v2.0.0+incompatible
-	github.com/rclone/rclone v1.73.3
+	github.com/pquerna/otp v1.5.0
+	github.com/prometheus/client_golang v1.23.2
+	github.com/rclone/rclone v1.73.5
 	github.com/robfig/cron/v3 v3.0.1
 	github.com/spf13/viper v1.20.0
 	go.uber.org/zap v1.27.0
-	golang.org/x/crypto v0.48.0
+	golang.org/x/crypto v0.50.0
 	golang.org/x/oauth2 v0.34.0
 	google.golang.org/api v0.255.0
 	gopkg.in/yaml.v3 v3.0.1
@@ -27,10 +30,10 @@ require (
 	github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.2 // indirect
 	github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.6.3 // indirect
 	github.com/Azure/azure-sdk-for-go/sdk/storage/azfile v1.5.3 // indirect
-	github.com/Azure/go-ntlmssp v0.0.2-0.20251110135918-10b7b7e7cd26 // indirect
+	github.com/Azure/go-ntlmssp v0.1.1 // indirect
 	github.com/AzureAD/microsoft-authentication-library-for-go v1.6.0 // indirect
 	github.com/BurntSushi/toml v1.6.0 // indirect
-	github.com/FilenCloudDienste/filen-sdk-go v0.0.37 // indirect
+	github.com/FilenCloudDienste/filen-sdk-go v0.0.38 // indirect
 	github.com/Files-com/files-sdk-go/v3 v3.2.264 // indirect
 	github.com/IBM/go-sdk-core/v5 v5.18.5 // indirect
 	github.com/Max-Sum/base32768 v0.0.0-20230304063302-18e6ce5945fd // indirect
@@ -47,25 +50,26 @@ require (
 	github.com/anchore/go-lzo v0.1.0 // indirect
 	github.com/andybalholm/cascadia v1.3.3 // indirect
 	github.com/appscode/go-querystring v0.0.0-20170504095604-0126cfb3f1dc // indirect
-	github.com/aws/aws-sdk-go-v2 v1.41.3 // indirect
-	github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.6 // indirect
-	github.com/aws/aws-sdk-go-v2/config v1.31.17 // indirect
+	github.com/aws/aws-sdk-go-v2 v1.41.7 // indirect
+	github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.10 // indirect
+	github.com/aws/aws-sdk-go-v2/config v1.32.8 // indirect
 	github.com/aws/aws-sdk-go-v2/credentials v1.19.11 // indirect
 	github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.18.19 // indirect
-	github.com/aws/aws-sdk-go-v2/feature/s3/manager v1.20.4 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.19 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.19 // indirect
+	github.com/aws/aws-sdk-go-v2/feature/s3/manager v1.22.1 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.23 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.23 // indirect
 	github.com/aws/aws-sdk-go-v2/internal/ini v1.8.4 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/v4a v1.4.20 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.13.6 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/checksum v1.9.11 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.13.19 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.19.19 // indirect
-	github.com/aws/aws-sdk-go-v2/service/s3 v1.96.4 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/v4a v1.4.24 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.13.9 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/checksum v1.9.15 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.13.23 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.19.23 // indirect
+	github.com/aws/aws-sdk-go-v2/service/s3 v1.101.0 // indirect
+	github.com/aws/aws-sdk-go-v2/service/signin v1.0.7 // indirect
 	github.com/aws/aws-sdk-go-v2/service/sso v1.30.12 // indirect
 	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.35.16 // indirect
 	github.com/aws/aws-sdk-go-v2/service/sts v1.41.8 // indirect
-	github.com/aws/smithy-go v1.24.2 // indirect
+	github.com/aws/smithy-go v1.25.1 // indirect
 	github.com/bahlo/generic-list-go v0.2.0 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/boombuler/barcode v1.1.0 // indirect
@@ -107,7 +111,7 @@ require (
 	github.com/glebarez/go-sqlite v1.21.2 // indirect
 	github.com/go-chi/chi/v5 v5.2.5 // indirect
 	github.com/go-darwin/apfs v0.0.0-20211011131704-f84b94dbf348 // indirect
-	github.com/go-git/go-billy/v5 v5.6.2 // indirect
+	github.com/go-git/go-billy/v5 v5.9.0 // indirect
 	github.com/go-logr/logr v1.4.3 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/go-ole/go-ole v1.3.0 // indirect
@@ -146,7 +150,6 @@ require (
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/jtolio/noiseconn v0.0.0-20231127013910-f6d9ecbf1de7 // indirect
 	github.com/jzelinskie/whirlpool v0.0.0-20201016144138-0675e54bb004 // indirect
-	github.com/klauspost/compress v1.18.1 // indirect
 	github.com/klauspost/cpuid/v2 v2.3.0 // indirect
 	github.com/koofr/go-httpclient v0.0.0-20240520111329-e20f8f203988 // indirect
 	github.com/koofr/go-koofrclient v0.0.0-20221207135200-cbd7fc9ad6a6 // indirect
@@ -180,8 +183,6 @@ require (
 	github.com/pkg/xattr v0.4.12 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
 	github.com/power-devops/perfstat v0.0.0-20240221224432-82ca36839d55 // indirect
-	github.com/pquerna/otp v1.5.0 // indirect
-	github.com/prometheus/client_golang v1.23.2 // indirect
 	github.com/prometheus/client_model v0.6.2 // indirect
 	github.com/prometheus/common v0.67.2 // indirect
 	github.com/prometheus/procfs v0.19.2 // indirect
@@ -224,22 +225,22 @@ require (
 	go.mongodb.org/mongo-driver v1.17.6 // indirect
 	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
 	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.63.0 // indirect
-	go.opentelemetry.io/otel v1.39.0 // indirect
-	go.opentelemetry.io/otel/metric v1.39.0 // indirect
-	go.opentelemetry.io/otel/trace v1.39.0 // indirect
+	go.opentelemetry.io/otel v1.41.0 // indirect
+	go.opentelemetry.io/otel/metric v1.41.0 // indirect
+	go.opentelemetry.io/otel/trace v1.41.0 // indirect
 	go.uber.org/multierr v1.10.0 // indirect
 	go.yaml.in/yaml/v2 v2.4.3 // indirect
 	golang.org/x/arch v0.14.0 // indirect
-	golang.org/x/exp v0.0.0-20251023183803-a4bb9ffd2546 // indirect
-	golang.org/x/image v0.32.0 // indirect
-	golang.org/x/mod v0.32.0 // indirect
-	golang.org/x/net v0.51.0 // indirect
-	golang.org/x/sync v0.19.0 // indirect
-	golang.org/x/sys v0.41.0 // indirect
-	golang.org/x/term v0.40.0 // indirect
-	golang.org/x/text v0.34.0 // indirect
+	golang.org/x/exp v0.0.0-20260410095643-746e56fc9e2f // indirect
+	golang.org/x/image v0.41.0 // indirect
+	golang.org/x/mod v0.35.0 // indirect
+	golang.org/x/net v0.53.0 // indirect
+	golang.org/x/sync v0.20.0 // indirect
+	golang.org/x/sys v0.43.0 // indirect
+	golang.org/x/term v0.42.0 // indirect
+	golang.org/x/text v0.37.0 // indirect
 	golang.org/x/time v0.14.0 // indirect
-	golang.org/x/tools v0.41.0 // indirect
+	golang.org/x/tools v0.44.0 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20251202230838-ff82c1b0f217 // indirect
 	google.golang.org/grpc v1.79.3 // indirect
 	google.golang.org/protobuf v1.36.10 // indirect
--- a/server/go.sum
+++ b/server/go.sum
@@ -51,8 +51,8 @@ github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.6.3 h1:ZJJNFaQ86GVKQ9ehw
 github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.6.3/go.mod h1:URuDvhmATVKqHBH9/0nOiNKk0+YcwfQ3WkK5PqHKxc8=
 github.com/Azure/azure-sdk-for-go/sdk/storage/azfile v1.5.3 h1:sxgSqOB9CDToiaVFpxuvb5wGgGqWa3lCShcm5o0n3bE=
 github.com/Azure/azure-sdk-for-go/sdk/storage/azfile v1.5.3/go.mod h1:XdED8i399lEVblYHTZM8eXaP07gv4Z58IL6ueMlVlrg=
-github.com/Azure/go-ntlmssp v0.0.2-0.20251110135918-10b7b7e7cd26 h1:gy/jrlpp8EfSyA73a51fofoSfhp5rPNQAUvDr4Dm91c=
-github.com/Azure/go-ntlmssp v0.0.2-0.20251110135918-10b7b7e7cd26/go.mod h1:NYqdhxd/8aAct/s4qSYZEerdPuH1liG2/X9DiVTbhpk=
+github.com/Azure/go-ntlmssp v0.1.1 h1:l+FM/EEMb0U9QZE7mKNEDw5Mu3mFiaa2GKOoTSsNDPw=
+github.com/Azure/go-ntlmssp v0.1.1/go.mod h1:NYqdhxd/8aAct/s4qSYZEerdPuH1liG2/X9DiVTbhpk=
 github.com/AzureAD/microsoft-authentication-extensions-for-go/cache v0.1.1 h1:WJTmL004Abzc5wDB5VtZG2PJk5ndYDgVacGqfirKxjM=
 github.com/AzureAD/microsoft-authentication-extensions-for-go/cache v0.1.1/go.mod h1:tCcJZ0uHAmvjsVYzEFivsRTN00oz5BEsRgQHu5JZ9WE=
 github.com/AzureAD/microsoft-authentication-library-for-go v1.6.0 h1:XRzhVemXdgvJqCH0sFfrBUTnUJSBrBf7++ypk+twtRs=
@@ -61,8 +61,8 @@ github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03
 github.com/BurntSushi/toml v1.6.0 h1:dRaEfpa2VI55EwlIW72hMRHdWouJeRF7TPYhI+AUQjk=
 github.com/BurntSushi/toml v1.6.0/go.mod h1:ukJfTF/6rtPPRCnwkur4qwRxa8vTRFBF0uk2lLoLwho=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
-github.com/FilenCloudDienste/filen-sdk-go v0.0.37 h1:W8S9TrAyZ4//3PXsU6+Bi+fe/6uIL986GyS7PVzIDL4=
-github.com/FilenCloudDienste/filen-sdk-go v0.0.37/go.mod h1:0cBhKXQg49XbKZZfk5TCDa3sVLP+xMxZTWL+7KY0XR0=
+github.com/FilenCloudDienste/filen-sdk-go v0.0.38 h1:YCyHs3wUXEe2BEWn40vcoyaQ2ruHNmNwkasfo3Th16A=
+github.com/FilenCloudDienste/filen-sdk-go v0.0.38/go.mod h1:0cBhKXQg49XbKZZfk5TCDa3sVLP+xMxZTWL+7KY0XR0=
 github.com/Files-com/files-sdk-go/v3 v3.2.264 h1:lMHTplAYI9FtmCo/QOcpRxmPA5REVAct1r2riQmDQKw=
 github.com/Files-com/files-sdk-go/v3 v3.2.264/go.mod h1:wGqkOzRu/ClJibvDgcfuJNAqI2nLhe8g91tPlDKRCdE=
 github.com/IBM/go-sdk-core/v5 v5.18.5 h1:g0JRl3sYXJczB/yuDlrN6x22LJ6jIxhp0Sa4ARNW60c=
@@ -102,44 +102,46 @@ github.com/andybalholm/cascadia v1.3.3 h1:AG2YHrzJIm4BZ19iwJ/DAua6Btl3IwJX+VI4kk
 github.com/andybalholm/cascadia v1.3.3/go.mod h1:xNd9bqTn98Ln4DwST8/nG+H0yuB8Hmgu1YHNnWw0GeA=
 github.com/appscode/go-querystring v0.0.0-20170504095604-0126cfb3f1dc h1:LoL75er+LKDHDUfU5tRvFwxH0LjPpZN8OoG8Ll+liGU=
 github.com/appscode/go-querystring v0.0.0-20170504095604-0126cfb3f1dc/go.mod h1:w648aMHEgFYS6xb0KVMMtZ2uMeemhiKCuD2vj6gY52A=
-github.com/aws/aws-sdk-go-v2 v1.41.3 h1:4kQ/fa22KjDt13QCy1+bYADvdgcxpfH18f0zP542kZA=
-github.com/aws/aws-sdk-go-v2 v1.41.3/go.mod h1:mwsPRE8ceUUpiTgF7QmQIJ7lgsKUPQOUl3o72QBrE1o=
-github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.6 h1:N4lRUXZpZ1KVEUn6hxtco/1d2lgYhNn1fHkkl8WhlyQ=
-github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.6/go.mod h1:lyw7GFp3qENLh7kwzf7iMzAxDn+NzjXEAGjKS2UOKqI=
-github.com/aws/aws-sdk-go-v2/config v1.31.17 h1:QFl8lL6RgakNK86vusim14P2k8BFSxjvUkcWLDjgz9Y=
-github.com/aws/aws-sdk-go-v2/config v1.31.17/go.mod h1:V8P7ILjp/Uef/aX8TjGk6OHZN6IKPM5YW6S78QnRD5c=
+github.com/aws/aws-sdk-go-v2 v1.41.7 h1:DWpAJt66FmnnaRIOT/8ASTucrvuDPZASqhhLey6tLY8=
+github.com/aws/aws-sdk-go-v2 v1.41.7/go.mod h1:4LAfZOPHNVNQEckOACQx60Y8pSRjIkNZQz1w92xpMJc=
+github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.10 h1:gx1AwW1Iyk9Z9dD9F4akX5gnN3QZwUB20GGKH/I+Rho=
+github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.10/go.mod h1:qqY157uZoqm5OXq/amuaBJyC9hgBCBQnsaWnPe905GY=
+github.com/aws/aws-sdk-go-v2/config v1.32.8 h1:iu+64gwDKEoKnyTQskSku72dAwggKI5sV6rNvgSMpMs=
+github.com/aws/aws-sdk-go-v2/config v1.32.8/go.mod h1:MI2XvA+qDi3i9AJxX1E2fu730syEBzp/jnXrjxuHwgI=
 github.com/aws/aws-sdk-go-v2/credentials v1.19.11 h1:NdV8cwCcAXrCWyxArt58BrvZJ9pZ9Fhf9w6Uh5W3Uyc=
 github.com/aws/aws-sdk-go-v2/credentials v1.19.11/go.mod h1:30yY2zqkMPdrvxBqzI9xQCM+WrlrZKSOpSJEsylVU+8=
 github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.18.19 h1:INUvJxmhdEbVulJYHI061k4TVuS3jzzthNvjqvVvTKM=
 github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.18.19/go.mod h1:FpZN2QISLdEBWkayloda+sZjVJL+e9Gl0k1SyTgcswU=
-github.com/aws/aws-sdk-go-v2/feature/s3/manager v1.20.4 h1:2fjfz3/G9BRvIKuNZ655GwzpklC2kEH0cowZQGO7uBg=
-github.com/aws/aws-sdk-go-v2/feature/s3/manager v1.20.4/go.mod h1:Ymws824lvMypLFPwyyUXM52SXuGgxpu0+DISLfKvB+c=
-github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.19 h1:/sECfyq2JTifMI2JPyZ4bdRN77zJmr6SrS1eL3augIA=
-github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.19/go.mod h1:dMf8A5oAqr9/oxOfLkC/c2LU/uMcALP0Rgn2BD5LWn0=
-github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.19 h1:AWeJMk33GTBf6J20XJe6qZoRSJo0WfUhsMdUKhoODXE=
-github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.19/go.mod h1:+GWrYoaAsV7/4pNHpwh1kiNLXkKaSoppxQq9lbH8Ejw=
+github.com/aws/aws-sdk-go-v2/feature/s3/manager v1.22.1 h1:IbWiN670htmBioc+Zj32vSpJgQ2+OYSlvTvfQ1nCORQ=
+github.com/aws/aws-sdk-go-v2/feature/s3/manager v1.22.1/go.mod h1:tw/B596EUhBWDFGdDGuLC21fVU4A3s4/5Efy8S39W18=
+github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.23 h1:GpT/TrnBYuE5gan2cZbTtvP+JlHsutdmlV2YfEyNde0=
+github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.23/go.mod h1:xYWD6BS9ywC5bS3sz9Xh04whO/hzK2plt2Zkyrp4JuA=
+github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.23 h1:bpd8vxhlQi2r1hiueOw02f/duEPTMK59Q4QMAoTTtTo=
+github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.23/go.mod h1:15DfR2nw+CRHIk0tqNyifu3G1YdAOy68RftkhMDDwYk=
 github.com/aws/aws-sdk-go-v2/internal/ini v1.8.4 h1:WKuaxf++XKWlHWu9ECbMlha8WOEGm0OUEZqm4K/Gcfk=
 github.com/aws/aws-sdk-go-v2/internal/ini v1.8.4/go.mod h1:ZWy7j6v1vWGmPReu0iSGvRiise4YI5SkR3OHKTZ6Wuc=
-github.com/aws/aws-sdk-go-v2/internal/v4a v1.4.20 h1:qi3e/dmpdONhj1RyIZdi6DKKpDXS5Lb8ftr3p7cyHJc=
-github.com/aws/aws-sdk-go-v2/internal/v4a v1.4.20/go.mod h1:V1K+TeJVD5JOk3D9e5tsX2KUdL7BlB+FV6cBhdobN8c=
-github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.13.6 h1:XAq62tBTJP/85lFD5oqOOe7YYgWxY9LvWq8plyDvDVg=
-github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.13.6/go.mod h1:x0nZssQ3qZSnIcePWLvcoFisRXJzcTVvYpAAdYX8+GI=
-github.com/aws/aws-sdk-go-v2/service/internal/checksum v1.9.11 h1:BYf7XNsJMzl4mObARUBUib+j2tf0U//JAAtTnYqvqCw=
-github.com/aws/aws-sdk-go-v2/service/internal/checksum v1.9.11/go.mod h1:aEUS4WrNk/+FxkBZZa7tVgp4pGH+kFGW40Y8rCPqt5g=
-github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.13.19 h1:X1Tow7suZk9UCJHE1Iw9GMZJJl0dAnKXXP1NaSDHwmw=
-github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.13.19/go.mod h1:/rARO8psX+4sfjUQXp5LLifjUt8DuATZ31WptNJTyQA=
-github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.19.19 h1:JnQeStZvPHFHeyky/7LbMlyQjUa+jIBj36OlWm0pzIk=
-github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.19.19/go.mod h1:HGyasyHvYdFQeJhvDHfH7HXkHh57htcJGKDZ+7z+I24=
-github.com/aws/aws-sdk-go-v2/service/s3 v1.96.4 h1:4ExZyubQ6LQQVuF2Qp9OsfEvsTdAWh5Gfwf6PgIdLdk=
-github.com/aws/aws-sdk-go-v2/service/s3 v1.96.4/go.mod h1:NF3JcMGOiARAss1ld3WGORCw71+4ExDD2cbbdKS5PpA=
+github.com/aws/aws-sdk-go-v2/internal/v4a v1.4.24 h1:OQqn11BtaYv1WLUowvcA30MpzIu8Ti4pcLPIIyoKZrA=
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+github.com/aws/aws-sdk-go-v2/service/signin v1.0.7 h1:Y2cAXlClHsXkkOvWZFXATr34b0hxxloeQu/pAZz2row=
+github.com/aws/aws-sdk-go-v2/service/signin v1.0.7/go.mod h1:idzZ7gmDeqeNrSPkdbtMp9qWMgcBwykA7P7Rzh5DXVU=
 github.com/aws/aws-sdk-go-v2/service/sso v1.30.12 h1:iSsvB9EtQ09YrsmIc44Heqlx5ByGErqhPK1ZQLppias=
 github.com/aws/aws-sdk-go-v2/service/sso v1.30.12/go.mod h1:fEWYKTRGoZNl8tZ77i61/ccwOMJdGxwOhWCkp6TXAr0=
 github.com/aws/aws-sdk-go-v2/service/ssooidc v1.35.16 h1:EnUdUqRP1CNzt2DkV67tJx6XDN4xlfBFm+bzeNOQVb0=
 github.com/aws/aws-sdk-go-v2/service/ssooidc v1.35.16/go.mod h1:Jic/xv0Rq/pFNCh3WwpH4BEqdbSAl+IyHro8LbibHD8=
 github.com/aws/aws-sdk-go-v2/service/sts v1.41.8 h1:XQTQTF75vnug2TXS8m7CVJfC2nniYPZnO1D4Np761Oo=
 github.com/aws/aws-sdk-go-v2/service/sts v1.41.8/go.mod h1:Xgx+PR1NUOjNmQY+tRMnouRp83JRM8pRMw/vCaVhPkI=
-github.com/aws/smithy-go v1.24.2 h1:FzA3bu/nt/vDvmnkg+R8Xl46gmzEDam6mZ1hzmwXFng=
-github.com/aws/smithy-go v1.24.2/go.mod h1:YE2RhdIuDbA5E5bTdciG9KrW3+TiEONeUWCqxX9i1Fc=
+github.com/aws/smithy-go v1.25.1 h1:J8ERsGSU7d+aCmdQur5Txg6bVoYelvQJgtZehD12GkI=
+github.com/aws/smithy-go v1.25.1/go.mod h1:YE2RhdIuDbA5E5bTdciG9KrW3+TiEONeUWCqxX9i1Fc=
 github.com/bahlo/generic-list-go v0.2.0 h1:5sz/EEAK+ls5wF+NeqDpk5+iNdMDXrh3z3nPnH1Wvgk=
 github.com/bahlo/generic-list-go v0.2.0/go.mod h1:2KvAjgMlE5NNynlg/5iLrrCCZ2+5xWbdbCW3pNTGyYg=
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
@@ -256,8 +258,8 @@ github.com/go-chi/chi/v5 v5.2.5 h1:Eg4myHZBjyvJmAFjFvWgrqDTXFyOzjj7YIm3L3mu6Ug=
 github.com/go-chi/chi/v5 v5.2.5/go.mod h1:X7Gx4mteadT3eDOMTsXzmI4/rwUpOwBHLpAfupzFJP0=
 github.com/go-darwin/apfs v0.0.0-20211011131704-f84b94dbf348 h1:JnrjqG5iR07/8k7NqrLNilRsl3s1EPRQEGvbPyOce68=
 github.com/go-darwin/apfs v0.0.0-20211011131704-f84b94dbf348/go.mod h1:Czxo/d1g948LtrALAZdL04TL/HnkopquAjxYUuI02bo=
-github.com/go-git/go-billy/v5 v5.6.2 h1:6Q86EsPXMa7c3YZ3aLAQsMA0VlWmy43r6FHqa/UNbRM=
-github.com/go-git/go-billy/v5 v5.6.2/go.mod h1:rcFC2rAsp/erv7CMz9GczHcuD0D32fWzH+MJAU+jaUU=
+github.com/go-git/go-billy/v5 v5.9.0 h1:jItGXszUDRtR/AlferWPTMN4j38BQ88XnXKbilmmBPA=
+github.com/go-git/go-billy/v5 v5.9.0/go.mod h1:jCnQMLj9eUgGU7+ludSTYoZL/GGmii14RxKFj7ROgHw=
 github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20191125211704-12ad95a8df72/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
@@ -530,8 +532,8 @@ github.com/rclone/Proton-API-Bridge v1.0.1-0.20260127174007-77f974840d11 h1:4MI2
 github.com/rclone/Proton-API-Bridge v1.0.1-0.20260127174007-77f974840d11/go.mod h1:3HLX7dwZgvB7nt+Yl/xdzVPcargQ1yBmJEUg3n+jMKM=
 github.com/rclone/go-proton-api v1.0.1-0.20260127173028-eb465cac3b18 h1:Lc+d3ISfQaMJKWZOE7z4ZSY4RVmdzbn1B0IM8xN18qM=
 github.com/rclone/go-proton-api v1.0.1-0.20260127173028-eb465cac3b18/go.mod h1:LB2kCEaZMzNn3ocdz+qYfxXmuLxxN0ka62KJd2x53Bc=
-github.com/rclone/rclone v1.73.3 h1:XKlobcnXxxzxnB6UBSVtRB+UeZmYDV9B4QExVSSGoAY=
-github.com/rclone/rclone v1.73.3/go.mod h1:QJDWatpAY9sKGXfpKZUXbThvtHoeo78DcFP2+/cbkvc=
+github.com/rclone/rclone v1.73.5 h1:r8a9JHYIWUqk7hNRJuMJ3cROkKfB2zmfkADg8ZLYh6I=
+github.com/rclone/rclone v1.73.5/go.mod h1:WVv8gvA/lEl/Y37e8I8yosm7ZY+Szq7ujXbJS8Ol63o=
 github.com/relvacode/iso8601 v1.7.0 h1:BXy+V60stMP6cpswc+a93Mq3e65PfXCgDFfhvNNGrdo=
 github.com/relvacode/iso8601 v1.7.0/go.mod h1:FlNp+jz+TXpyRqgmM7tnzHHzBnz776kmAH2h3sZCn0I=
 github.com/remyoudompheng/bigfft v0.0.0-20200410134404-eec4a21b6bb0/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
@@ -651,16 +653,16 @@ go.opentelemetry.io/auto/sdk v1.2.1 h1:jXsnJ4Lmnqd11kwkBV2LgLoFMZKizbCi5fNZ/ipaZ
 go.opentelemetry.io/auto/sdk v1.2.1/go.mod h1:KRTj+aOaElaLi+wW1kO/DZRXwkF4C5xPbEe3ZiIhN7Y=
 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.63.0 h1:RbKq8BG0FI8OiXhBfcRtqqHcZcka+gU3cskNuf05R18=
 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.63.0/go.mod h1:h06DGIukJOevXaj/xrNjhi/2098RZzcLTbc0jDAUbsg=
-go.opentelemetry.io/otel v1.39.0 h1:8yPrr/S0ND9QEfTfdP9V+SiwT4E0G7Y5MO7p85nis48=
-go.opentelemetry.io/otel v1.39.0/go.mod h1:kLlFTywNWrFyEdH0oj2xK0bFYZtHRYUdv1NklR/tgc8=
-go.opentelemetry.io/otel/metric v1.39.0 h1:d1UzonvEZriVfpNKEVmHXbdf909uGTOQjA0HF0Ls5Q0=
-go.opentelemetry.io/otel/metric v1.39.0/go.mod h1:jrZSWL33sD7bBxg1xjrqyDjnuzTUB0x1nBERXd7Ftcs=
+go.opentelemetry.io/otel v1.41.0 h1:YlEwVsGAlCvczDILpUXpIpPSL/VPugt7zHThEMLce1c=
+go.opentelemetry.io/otel v1.41.0/go.mod h1:Yt4UwgEKeT05QbLwbyHXEwhnjxNO6D8L5PQP51/46dE=
+go.opentelemetry.io/otel/metric v1.41.0 h1:rFnDcs4gRzBcsO9tS8LCpgR0dxg4aaxWlJxCno7JlTQ=
+go.opentelemetry.io/otel/metric v1.41.0/go.mod h1:xPvCwd9pU0VN8tPZYzDZV/BMj9CM9vs00GuBjeKhJps=
 go.opentelemetry.io/otel/sdk v1.39.0 h1:nMLYcjVsvdui1B/4FRkwjzoRVsMK8uL/cj0OyhKzt18=
 go.opentelemetry.io/otel/sdk v1.39.0/go.mod h1:vDojkC4/jsTJsE+kh+LXYQlbL8CgrEcwmt1ENZszdJE=
 go.opentelemetry.io/otel/sdk/metric v1.39.0 h1:cXMVVFVgsIf2YL6QkRF4Urbr/aMInf+2WKg+sEJTtB8=
 go.opentelemetry.io/otel/sdk/metric v1.39.0/go.mod h1:xq9HEVH7qeX69/JnwEfp6fVq5wosJsY1mt4lLfYdVew=
-go.opentelemetry.io/otel/trace v1.39.0 h1:2d2vfpEDmCJ5zVYz7ijaJdOF59xLomrvj7bjt6/qCJI=
-go.opentelemetry.io/otel/trace v1.39.0/go.mod h1:88w4/PnZSazkGzz/w84VHpQafiU4EtqqlVdxWy+rNOA=
+go.opentelemetry.io/otel/trace v1.41.0 h1:Vbk2co6bhj8L59ZJ6/xFTskY+tGAbOnCtQGVVa9TIN0=
+go.opentelemetry.io/otel/trace v1.41.0/go.mod h1:U1NU4ULCoxeDKc09yCWdWe+3QoyweJcISEVa1RBzOis=
 go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
 go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=
 go.uber.org/mock v0.5.0 h1:KAMbZvZPyBPWgD14IrIQ38QCyjwpvVVV6K/bHl1IwQU=
@@ -688,8 +690,8 @@ golang.org/x/crypto v0.13.0/go.mod h1:y6Z2r+Rw4iayiXXAIxJIDAJ1zMW4yaTpebo8fPOliY
 golang.org/x/crypto v0.19.0/go.mod h1:Iy9bg/ha4yyC70EfRS8jz+B6ybOBKMaSxLj6P6oBDfU=
 golang.org/x/crypto v0.23.0/go.mod h1:CKFgDieR+mRhux2Lsu27y0fO304Db0wZe70UKqHu0v8=
 golang.org/x/crypto v0.31.0/go.mod h1:kDsLvtWBEx7MV9tJOj9bnXsPbxwJQ6csT/x4KIN4Ssk=
-golang.org/x/crypto v0.48.0 h1:/VRzVqiRSggnhY7gNRxPauEQ5Drw9haKdM0jqfcCFts=
-golang.org/x/crypto v0.48.0/go.mod h1:r0kV5h3qnFPlQnBSrULhlsRfryS2pmewsg+XfMgkVos=
+golang.org/x/crypto v0.50.0 h1:zO47/JPrL6vsNkINmLoo/PH1gcxpls50DNogFvB5ZGI=
+golang.org/x/crypto v0.50.0/go.mod h1:3muZ7vA7PBCE6xgPX7nkzzjiUq87kRItoJQM1Yo8S+Q=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190510132918-efd6b22b2522/go.mod h1:ZjyILWgesfNpC6sMxTJOJm9Kp84zZh5NQWvqDGG3Qr8=
@@ -700,12 +702,12 @@ golang.org/x/exp v0.0.0-20191227195350-da58074b4299/go.mod h1:2RIsYlXP63K8oxa1u0
 golang.org/x/exp v0.0.0-20200119233911-0405dc783f0a/go.mod h1:2RIsYlXP63K8oxa1u096TMicItID8zy7Y6sNkU49FU4=
 golang.org/x/exp v0.0.0-20200207192155-f17229e696bd/go.mod h1:J/WKrq2StrnmMY6+EHIKF9dgMWnmCNThgcyBT1FY9mM=
 golang.org/x/exp v0.0.0-20200224162631-6cc2880d07d6/go.mod h1:3jZMyOhIsHpP37uCMkUooju7aAi5cS1Q23tOzKc+0MU=
-golang.org/x/exp v0.0.0-20251023183803-a4bb9ffd2546 h1:mgKeJMpvi0yx/sU5GsxQ7p6s2wtOnGAHZWCHUM4KGzY=
-golang.org/x/exp v0.0.0-20251023183803-a4bb9ffd2546/go.mod h1:j/pmGrbnkbPtQfxEe5D0VQhZC6qKbfKifgD0oM7sR70=
+golang.org/x/exp v0.0.0-20260410095643-746e56fc9e2f h1:W3F4c+6OLc6H2lb//N1q4WpJkhzJCK5J6kUi1NTVXfM=
+golang.org/x/exp v0.0.0-20260410095643-746e56fc9e2f/go.mod h1:J1xhfL/vlindoeF/aINzNzt2Bket5bjo9sdOYzOsU80=
 golang.org/x/image v0.0.0-20190227222117-0694c2d4d067/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
 golang.org/x/image v0.0.0-20190802002840-cff245a6509b/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
-golang.org/x/image v0.32.0 h1:6lZQWq75h7L5IWNk0r+SCpUJ6tUVd3v4ZHnbRKLkUDQ=
-golang.org/x/image v0.32.0/go.mod h1:/R37rrQmKXtO6tYXAjtDLwQgFLHmhW+V6ayXlxzP2Pc=
+golang.org/x/image v0.41.0 h1:8wS72eGJMJaBxK6okTzd4WaXumUlTVlb753MlsSvTCo=
+golang.org/x/image v0.41.0/go.mod h1:uIc348UZMSvS5Z65CVZ7iDPaNobNFEPeJ4kbqTOszmA=
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
 golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
 golang.org/x/lint v0.0.0-20190301231843-5614ed5bae6f/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
@@ -730,8 +732,8 @@ golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/mod v0.12.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/mod v0.15.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
 golang.org/x/mod v0.17.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
-golang.org/x/mod v0.32.0 h1:9F4d3PHLljb6x//jOyokMv3eX+YDeepZSEo3mFJy93c=
-golang.org/x/mod v0.32.0/go.mod h1:SgipZ/3h2Ci89DlEtEXWUk/HteuRin+HHhN+WbNhguU=
+golang.org/x/mod v0.35.0 h1:Ww1D637e6Pg+Zb2KrWfHQUnH2dQRLBQyAtpr/haaJeM=
+golang.org/x/mod v0.35.0/go.mod h1:+GwiRhIInF8wPm+4AoT6L0FA1QWAad3OMdTRx4tFYlU=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -771,8 +773,8 @@ golang.org/x/net v0.15.0/go.mod h1:idbUs1IY1+zTqbi8yxTbhexhEEk5ur9LInksu6HrEpk=
 golang.org/x/net v0.21.0/go.mod h1:bIjVDfnllIU7BJ2DNgfnXvpSvtn8VRwhlsaeUTyUS44=
 golang.org/x/net v0.25.0/go.mod h1:JkAGAh7GEvH74S6FOH42FLoXpXbE/aqXSrIQjXgsiwM=
 golang.org/x/net v0.33.0/go.mod h1:HXLR5J+9DxmrqMwG9qjGCxZ+zKXxBru04zlTvWlWuN4=
-golang.org/x/net v0.51.0 h1:94R/GTO7mt3/4wIKpcR5gkGmRLOuE/2hNGeWq/GBIFo=
-golang.org/x/net v0.51.0/go.mod h1:aamm+2QF5ogm02fjy5Bb7CQ0WMt1/WVM7FtyaTLlA9Y=
+golang.org/x/net v0.53.0 h1:d+qAbo5L0orcWAr0a9JweQpjXF19LMXJE8Ey7hwOdUA=
+golang.org/x/net v0.53.0/go.mod h1:JvMuJH7rrdiCfbeHoo3fCQU24Lf5JJwT9W3sJFulfgs=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
@@ -796,8 +798,8 @@ golang.org/x/sync v0.3.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
 golang.org/x/sync v0.6.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sync v0.10.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
-golang.org/x/sync v0.19.0 h1:vV+1eWNmZ5geRlYjzm2adRgW2/mcpevXNg50YZtPCE4=
-golang.org/x/sync v0.19.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
+golang.org/x/sync v0.20.0 h1:e0PTpb7pjO8GAtTs2dQ6jYa5BWYlMuX047Dco/pItO4=
+golang.org/x/sync v0.20.0/go.mod h1:9xrNwdLfx4jkKbNva9FpL6vEN7evnE43NNNJQ2LF3+0=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190312061237-fead79001313/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -847,8 +849,8 @@ golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/sys v0.28.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-golang.org/x/sys v0.41.0 h1:Ivj+2Cp/ylzLiEU89QhWblYnOE9zerudt9Ftecq2C6k=
-golang.org/x/sys v0.41.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
+golang.org/x/sys v0.43.0 h1:Rlag2XtaFTxp19wS8MXlJwTvoh8ArU6ezoyFsMyCTNI=
+golang.org/x/sys v0.43.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
 golang.org/x/telemetry v0.0.0-20240228155512-f48c80bd79b2/go.mod h1:TeRTkGYfJXctD9OcfyVLyj2J3IxLnKwHJR8f4D8a3YE=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
@@ -860,8 +862,8 @@ golang.org/x/term v0.12.0/go.mod h1:owVbMEjm3cBLCHdkQu9b1opXd4ETQWc3BhuQGKgXgvU=
 golang.org/x/term v0.17.0/go.mod h1:lLRBjIVuehSbZlaOtGMbcMncT+aqLLLmKrsjNrUguwk=
 golang.org/x/term v0.20.0/go.mod h1:8UkIAJTvZgivsXaD6/pH6U9ecQzZ45awqEOzuCvwpFY=
 golang.org/x/term v0.27.0/go.mod h1:iMsnZpn0cago0GOrHO2+Y7u7JPn5AylBrcoWkElMTSM=
-golang.org/x/term v0.40.0 h1:36e4zGLqU4yhjlmxEaagx2KuYbJq3EwY8K943ZsHcvg=
-golang.org/x/term v0.40.0/go.mod h1:w2P8uVp06p2iyKKuvXIm7N/y0UCRt3UfJTfZ7oOpglM=
+golang.org/x/term v0.42.0 h1:UiKe+zDFmJobeJ5ggPwOshJIVt6/Ft0rcfrXZDLWAWY=
+golang.org/x/term v0.42.0/go.mod h1:Dq/D+snpsbazcBG5+F9Q1n2rXV8Ma+71xEjTRufARgY=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
@@ -877,8 +879,8 @@ golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
 golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
 golang.org/x/text v0.15.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
 golang.org/x/text v0.21.0/go.mod h1:4IBbMaMmOPCJ8SecivzSH54+73PCFmPWxNTLm+vZkEQ=
-golang.org/x/text v0.34.0 h1:oL/Qq0Kdaqxa1KbNeMKwQq0reLCCaFtqu2eNuSeNHbk=
-golang.org/x/text v0.34.0/go.mod h1:homfLqTYRFyVYemLBFl5GgL/DWEiH5wcsQ5gSh1yziA=
+golang.org/x/text v0.37.0 h1:Cqjiwd9eSg8e0QAkyCaQTNHFIIzWtidPahFWR83rTrc=
+golang.org/x/text v0.37.0/go.mod h1:a5sjxXGs9hsn/AJVwuElvCAo9v8QYLzvavO5z2PiM38=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20191024005414-555d28b269f0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
@@ -931,8 +933,8 @@ golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc
 golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
 golang.org/x/tools v0.13.0/go.mod h1:HvlwmtVNQAhOuCjW7xxvovg8wbNq7LwfXh/k7wXUl58=
 golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d/go.mod h1:aiJjzUbINMkxbQROHiO6hDPo2LHcIPhhQsa9DLh0yGk=
-golang.org/x/tools v0.41.0 h1:a9b8iMweWG+S0OBnlU36rzLp20z1Rp10w+IY2czHTQc=
-golang.org/x/tools v0.41.0/go.mod h1:XSY6eDqxVNiYgezAVqqCeihT4j1U2CCsqvH3WhQpnlg=
+golang.org/x/tools v0.44.0 h1:UP4ajHPIcuMjT1GqzDWRlalUEoY+uzoZKnhOjbIPD2c=
+golang.org/x/tools v0.44.0/go.mod h1:KA0AfVErSdxRZIsOVipbv3rQhVXTnlU6UhKxHd1seDI=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
--- a/server/internal/agent/agent.go
+++ b/server/internal/agent/agent.go
@@ -11,6 +11,8 @@ import (
 	"strings"
 	"sync"
 	"time"
+
+	"backupx/server/internal/backup"
 )

 // Agent 是 Agent 进程的主控制器。
@@ -131,6 +133,12 @@ func (a *Agent) pollAndHandleOnce(ctx context.Context) {
 		a.handleRunTask(ctx, cmd)
 	case "list_dir":
 		a.handleListDir(ctx, cmd)
+	case "restore_record":
+		a.handleRestoreRecord(ctx, cmd)
+	case "discover_db":
+		a.handleDiscoverDB(ctx, cmd)
+	case "delete_storage_object":
+		a.handleDeleteStorageObject(ctx, cmd)
 	default:
 		msg := fmt.Sprintf("unknown command type: %s", cmd.Type)
 		log.Printf("[agent] %s", msg)
@@ -158,6 +166,83 @@ func (a *Agent) handleRunTask(ctx context.Context, cmd *CommandPayload) {
 	})
 }

+// handleRestoreRecord 处理 restore_record 命令
+func (a *Agent) handleRestoreRecord(ctx context.Context, cmd *CommandPayload) {
+	var payload struct {
+		RestoreRecordID uint `json:"restoreRecordId"`
+	}
+	if err := json.Unmarshal(cmd.Payload, &payload); err != nil {
+		_ = a.client.SubmitCommandResult(ctx, cmd.ID, false, "invalid payload: "+err.Error(), nil)
+		return
+	}
+	if payload.RestoreRecordID == 0 {
+		_ = a.client.SubmitCommandResult(ctx, cmd.ID, false, "restoreRecordId is required", nil)
+		return
+	}
+	if err := a.executor.ExecuteRestore(ctx, payload.RestoreRecordID); err != nil {
+		_ = a.client.SubmitCommandResult(ctx, cmd.ID, false, err.Error(), nil)
+		return
+	}
+	_ = a.client.SubmitCommandResult(ctx, cmd.ID, true, "", map[string]any{
+		"restoreRecordId": payload.RestoreRecordID,
+	})
+}
+
+// handleDeleteStorageObject 处理 delete_storage_object 命令：在 Agent 侧删除指定存储对象。
+// 用于跨节点 local_disk 场景下的远程备份文件清理。
+func (a *Agent) handleDeleteStorageObject(ctx context.Context, cmd *CommandPayload) {
+	var payload struct {
+		TargetType   string         `json:"targetType"`
+		TargetConfig map[string]any `json:"targetConfig"`
+		StoragePath  string         `json:"storagePath"`
+	}
+	if err := json.Unmarshal(cmd.Payload, &payload); err != nil {
+		_ = a.client.SubmitCommandResult(ctx, cmd.ID, false, "invalid payload: "+err.Error(), nil)
+		return
+	}
+	if strings.TrimSpace(payload.StoragePath) == "" {
+		_ = a.client.SubmitCommandResult(ctx, cmd.ID, false, "storagePath is required", nil)
+		return
+	}
+	provider, err := a.executor.storageRegistry.Create(ctx, payload.TargetType, payload.TargetConfig)
+	if err != nil {
+		_ = a.client.SubmitCommandResult(ctx, cmd.ID, false, "create provider: "+err.Error(), nil)
+		return
+	}
+	if err := provider.Delete(ctx, payload.StoragePath); err != nil {
+		_ = a.client.SubmitCommandResult(ctx, cmd.ID, false, "delete object: "+err.Error(), nil)
+		return
+	}
+	_ = a.client.SubmitCommandResult(ctx, cmd.ID, true, "", map[string]any{"deleted": true})
+}
+
+// handleDiscoverDB 处理 discover_db 命令：在 Agent 本机执行 mysql/psql 列出数据库。
+func (a *Agent) handleDiscoverDB(ctx context.Context, cmd *CommandPayload) {
+	var payload struct {
+		Type     string `json:"type"`
+		Host     string `json:"host"`
+		Port     int    `json:"port"`
+		User     string `json:"user"`
+		Password string `json:"password"`
+	}
+	if err := json.Unmarshal(cmd.Payload, &payload); err != nil {
+		_ = a.client.SubmitCommandResult(ctx, cmd.ID, false, "invalid payload: "+err.Error(), nil)
+		return
+	}
+	databases, err := backup.DiscoverDatabases(ctx, backup.NewOSCommandExecutor(), backup.DiscoverRequest{
+		Type:     payload.Type,
+		Host:     payload.Host,
+		Port:     payload.Port,
+		User:     payload.User,
+		Password: payload.Password,
+	})
+	if err != nil {
+		_ = a.client.SubmitCommandResult(ctx, cmd.ID, false, err.Error(), nil)
+		return
+	}
+	_ = a.client.SubmitCommandResult(ctx, cmd.ID, true, "", map[string]any{"databases": databases})
+}
+
 // handleListDir 处理 list_dir 命令（阶段四实现）
 func (a *Agent) handleListDir(ctx context.Context, cmd *CommandPayload) {
 	var payload struct {
--- a/server/internal/agent/client.go
+++ b/server/internal/agent/client.go
@@ -143,13 +143,24 @@ func (c *MasterClient) GetTaskSpec(ctx context.Context, taskID uint) (*TaskSpec,

 // RecordUpdate 与 service.AgentRecordUpdate 对齐
 type RecordUpdate struct {
-	Status       string `json:"status,omitempty"`
-	FileName     string `json:"fileName,omitempty"`
-	FileSize     int64  `json:"fileSize,omitempty"`
-	Checksum     string `json:"checksum,omitempty"`
-	StoragePath  string `json:"storagePath,omitempty"`
-	ErrorMessage string `json:"errorMessage,omitempty"`
-	LogAppend    string `json:"logAppend,omitempty"`
+	Status               string              `json:"status,omitempty"`
+	FileName             string              `json:"fileName,omitempty"`
+	FileSize             int64               `json:"fileSize,omitempty"`
+	Checksum             string              `json:"checksum,omitempty"`
+	StoragePath          string              `json:"storagePath,omitempty"`
+	StorageTargetID      uint                `json:"storageTargetId,omitempty"`
+	StorageUploadResults []StorageResultItem `json:"storageUploadResults,omitempty"`
+	ErrorMessage         string              `json:"errorMessage,omitempty"`
+	LogAppend            string              `json:"logAppend,omitempty"`
+}
+
+type StorageResultItem struct {
+	StorageTargetID   uint   `json:"storageTargetId"`
+	StorageTargetName string `json:"storageTargetName"`
+	Status            string `json:"status"`
+	StoragePath       string `json:"storagePath,omitempty"`
+	FileSize          int64  `json:"fileSize,omitempty"`
+	Error             string `json:"error,omitempty"`
 }

 // UpdateRecord 上报备份记录的状态/日志
@@ -158,6 +169,53 @@ func (c *MasterClient) UpdateRecord(ctx context.Context, recordID uint, update R
 	return c.do(ctx, http.MethodPost, path, update, nil)
 }

+// RestoreSpec 与 service.AgentRestoreSpec 对齐
+type RestoreSpec struct {
+	RestoreRecordID uint                `json:"restoreRecordId"`
+	BackupRecordID  uint                `json:"backupRecordId"`
+	TaskID          uint                `json:"taskId"`
+	TaskName        string              `json:"taskName"`
+	Type            string              `json:"type"`
+	SourcePath      string              `json:"sourcePath,omitempty"`
+	SourcePaths     []string            `json:"sourcePaths,omitempty"`
+	DBHost          string              `json:"dbHost,omitempty"`
+	DBPort          int                 `json:"dbPort,omitempty"`
+	DBUser          string              `json:"dbUser,omitempty"`
+	DBPassword      string              `json:"dbPassword,omitempty"`
+	DBName          string              `json:"dbName,omitempty"`
+	DBPath          string              `json:"dbPath,omitempty"`
+	ExtraConfig     string              `json:"extraConfig,omitempty"`
+	Compression     string              `json:"compression"`
+	Encrypt         bool                `json:"encrypt"`
+	Storage         StorageTargetConfig `json:"storage"`
+	StoragePath     string              `json:"storagePath"`
+	FileName        string              `json:"fileName"`
+	Checksum        string              `json:"checksum,omitempty"`
+}
+
+// RestoreUpdate 与 service.AgentRestoreUpdate 对齐
+type RestoreUpdate struct {
+	Status       string `json:"status,omitempty"`
+	ErrorMessage string `json:"errorMessage,omitempty"`
+	LogAppend    string `json:"logAppend,omitempty"`
+}
+
+// GetRestoreSpec 拉取恢复规格
+func (c *MasterClient) GetRestoreSpec(ctx context.Context, restoreRecordID uint) (*RestoreSpec, error) {
+	var spec RestoreSpec
+	path := fmt.Sprintf("/api/agent/restores/%d/spec", restoreRecordID)
+	if err := c.do(ctx, http.MethodGet, path, nil, &spec); err != nil {
+		return nil, err
+	}
+	return &spec, nil
+}
+
+// UpdateRestore 上报恢复记录的状态/日志
+func (c *MasterClient) UpdateRestore(ctx context.Context, restoreRecordID uint, update RestoreUpdate) error {
+	path := fmt.Sprintf("/api/agent/restores/%d", restoreRecordID)
+	return c.do(ctx, http.MethodPost, path, update, nil)
+}
+
 // do 是通用 HTTP 调用。所有 Agent API 都统一走 JSON + X-Agent-Token。
 func (c *MasterClient) do(ctx context.Context, method, path string, body any, out any) error {
 	var reqBody io.Reader
--- a/server/internal/agent/config.go
+++ b/server/internal/agent/config.go
@@ -26,7 +26,7 @@ type Config struct {
 	HeartbeatInterval string `yaml:"heartbeatInterval"`
 	// PollInterval 命令轮询间隔，默认 5s
 	PollInterval string `yaml:"pollInterval"`
-	// TempDir 备份临时目录，默认 /tmp/backupx-agent
+	// TempDir 备份临时目录，默认 /var/lib/backupx-agent/tmp
 	TempDir string `yaml:"tempDir"`
 	// InsecureSkipTLSVerify 测试环境允许跳过 TLS 证书校验
 	InsecureSkipTLSVerify bool `yaml:"insecureSkipTlsVerify"`
@@ -98,7 +98,7 @@ func applyConfigDefaults(cfg *Config) (*Config, error) {
 		cfg.PollInterval = "5s"
 	}
 	if cfg.TempDir == "" {
-		cfg.TempDir = "/tmp/backupx-agent"
+		cfg.TempDir = "/var/lib/backupx-agent/tmp"
 	}
 	cfg.Master = strings.TrimRight(strings.TrimSpace(cfg.Master), "/")
 	return cfg, nil
--- a/server/internal/agent/config_test.go
+++ b/server/internal/agent/config_test.go
@@ -50,7 +50,7 @@ func TestLoadConfigDefaults(t *testing.T) {
 	if cfg.HeartbeatInterval != "15s" || cfg.PollInterval != "5s" {
 		t.Errorf("default intervals not applied: %+v", cfg)
 	}
-	if cfg.TempDir != "/tmp/backupx-agent" {
+	if cfg.TempDir != "/var/lib/backupx-agent/tmp" {
 		t.Errorf("default tempdir: %q", cfg.TempDir)
 	}
 }
--- a/server/internal/agent/executor.go
+++ b/server/internal/agent/executor.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	"crypto/sha256"
 	"encoding/hex"
+	"encoding/json"
 	"fmt"
 	"io"
 	"os"
@@ -19,10 +20,10 @@ import (

 // Executor 负责在 Agent 本地执行命令。
 type Executor struct {
-	client           *MasterClient
-	tempDir          string
-	backupRegistry   *backup.Registry
-	storageRegistry  *storage.Registry
+	client          *MasterClient
+	tempDir         string
+	backupRegistry  *backup.Registry
+	storageRegistry *storage.Registry
 }

 // NewExecutor 构造执行器。预先初始化 backup runner 与 storage registry。
@@ -33,6 +34,7 @@ func NewExecutor(client *MasterClient, tempDir string) *Executor {
 		backup.NewMySQLRunner(nil),
 		backup.NewPostgreSQLRunner(nil),
 		backup.NewSAPHANARunner(nil),
+		backup.NewMongoDBRunner(nil),
 	)
 	storageRegistry := storage.NewRegistry(
 		storageRclone.NewLocalDiskFactory(),
@@ -59,6 +61,11 @@ func NewExecutor(client *MasterClient, tempDir string) *Executor {
 // 注意：Agent 当前不支持 Encrypt=true（加密密钥不下发到 Agent，避免密钥扩散）。
 // 遇到启用加密的任务会向 Master 上报失败并返回错误。
 func (e *Executor) ExecuteRunTask(ctx context.Context, taskID, recordID uint) error {
+	if err := e.ensureTempDir(); err != nil {
+		e.reportRecordFailure(ctx, recordID, err.Error())
+		return err
+	}
+
 	// 1) 拉取任务规格
 	spec, err := e.client.GetTaskSpec(ctx, taskID)
 	if err != nil {
@@ -74,10 +81,6 @@ func (e *Executor) ExecuteRunTask(ctx context.Context, taskID, recordID uint) er

 	// 2) 构造 backup.TaskSpec 并找对应 runner
 	startedAt := time.Now().UTC()
-	if err := os.MkdirAll(e.tempDir, 0o755); err != nil {
-		e.reportRecordFailure(ctx, recordID, fmt.Sprintf("创建临时目录失败: %v", err))
-		return err
-	}
 	backupSpec := buildBackupTaskSpec(spec, startedAt, e.tempDir)
 	runner, err := e.backupRegistry.Runner(backupSpec.Type)
 	if err != nil {
@@ -104,6 +107,14 @@ func (e *Executor) ExecuteRunTask(ctx context.Context, taskID, recordID uint) er
 			return compressErr
 		}
 		finalPath = compressedPath
+	} else if strings.EqualFold(spec.Compression, "zstd") && !strings.HasSuffix(strings.ToLower(finalPath), ".zst") {
+		e.appendLog(ctx, recordID, "[agent] 开始压缩备份文件（zstd）\n")
+		compressedPath, compressErr := compress.ZstdFile(finalPath)
+		if compressErr != nil {
+			e.reportRecordFailure(ctx, recordID, fmt.Sprintf("压缩失败: %v", compressErr))
+			return compressErr
+		}
+		finalPath = compressedPath
 	}
 	info, err := os.Stat(finalPath)
 	if err != nil {
@@ -124,22 +135,52 @@ func (e *Executor) ExecuteRunTask(ctx context.Context, taskID, recordID uint) er
 		e.reportRecordFailure(ctx, recordID, "没有关联的存储目标")
 		return fmt.Errorf("no storage targets")
 	}
+	uploadResults := make([]StorageResultItem, 0, len(spec.StorageTargets))
+	selectedStorageTargetID := uint(0)
+	var uploadErrors []string
 	for _, target := range spec.StorageTargets {
 		if err := e.uploadToTarget(ctx, recordID, target, finalPath, storagePath, fileSize, spec.TaskID); err != nil {
-			e.reportRecordFailure(ctx, recordID, fmt.Sprintf("上传到 %s 失败: %v", target.Name, err))
-			return err
+			uploadResults = append(uploadResults, StorageResultItem{
+				StorageTargetID:   target.ID,
+				StorageTargetName: target.Name,
+				Status:            "failed",
+				Error:             err.Error(),
+			})
+			uploadErrors = append(uploadErrors, fmt.Sprintf("%s: %v", target.Name, err))
+			e.appendLog(ctx, recordID, fmt.Sprintf("[agent] 上传到存储目标 %s 失败: %v\n", target.Name, err))
+			continue
 		}
+		if selectedStorageTargetID == 0 {
+			selectedStorageTargetID = target.ID
+		}
+		uploadResults = append(uploadResults, StorageResultItem{
+			StorageTargetID:   target.ID,
+			StorageTargetName: target.Name,
+			Status:            "success",
+			StoragePath:       storagePath,
+			FileSize:          fileSize,
+		})
 		e.appendLog(ctx, recordID, fmt.Sprintf("[agent] 已上传到存储目标 %s\n", target.Name))
 	}
+	if selectedStorageTargetID == 0 {
+		msg := strings.Join(uploadErrors, "; ")
+		if msg == "" {
+			msg = "所有存储目标上传均失败"
+		}
+		e.reportRecordFailureWithUploadResults(ctx, recordID, msg, uploadResults)
+		return fmt.Errorf("%s", msg)
+	}

 	// 6) 上报最终成功
 	return e.client.UpdateRecord(ctx, recordID, RecordUpdate{
-		Status:      "success",
-		FileName:    fileName,
-		FileSize:    fileSize,
-		Checksum:    checksum,
-		StoragePath: storagePath,
-		LogAppend:   fmt.Sprintf("[agent] 任务完成，总计 %d 字节\n", fileSize),
+		Status:               "success",
+		FileName:             fileName,
+		FileSize:             fileSize,
+		Checksum:             checksum,
+		StoragePath:          storagePath,
+		StorageTargetID:      selectedStorageTargetID,
+		StorageUploadResults: uploadResults,
+		LogAppend:            fmt.Sprintf("[agent] 任务完成，总计 %d 字节\n", fileSize),
 	})
 }

@@ -175,31 +216,22 @@ func (e *Executor) appendLog(ctx context.Context, recordID uint, line string) {

 // reportRecordFailure 上报失败状态
 func (e *Executor) reportRecordFailure(ctx context.Context, recordID uint, msg string) {
+	e.reportRecordFailureWithUploadResults(ctx, recordID, msg, nil)
+}
+
+func (e *Executor) reportRecordFailureWithUploadResults(ctx context.Context, recordID uint, msg string, uploadResults []StorageResultItem) {
 	_ = e.client.UpdateRecord(ctx, recordID, RecordUpdate{
-		Status:       "failed",
-		ErrorMessage: msg,
-		LogAppend:    fmt.Sprintf("[agent] 错误: %s\n", msg),
+		Status:               "failed",
+		ErrorMessage:         msg,
+		StorageUploadResults: uploadResults,
+		LogAppend:            fmt.Sprintf("[agent] 错误: %s\n", msg),
 	})
 }

 // buildBackupTaskSpec 把 AgentTaskSpec 转换为 backup.TaskSpec。
 func buildBackupTaskSpec(spec *TaskSpec, startedAt time.Time, tempDir string) backup.TaskSpec {
-	var sourcePaths []string
-	if strings.TrimSpace(spec.SourcePaths) != "" {
-		for _, p := range strings.Split(spec.SourcePaths, "\n") {
-			if p = strings.TrimSpace(p); p != "" {
-				sourcePaths = append(sourcePaths, p)
-			}
-		}
-	}
-	var excludes []string
-	if strings.TrimSpace(spec.ExcludePatterns) != "" {
-		for _, p := range strings.Split(spec.ExcludePatterns, "\n") {
-			if p = strings.TrimSpace(p); p != "" {
-				excludes = append(excludes, p)
-			}
-		}
-	}
+	sourcePaths := parseStringListField(spec.SourcePaths)
+	excludes := parseStringListField(spec.ExcludePatterns)
 	return backup.TaskSpec{
 		ID:              spec.TaskID,
 		Name:            spec.Name,
@@ -222,6 +254,37 @@ func buildBackupTaskSpec(spec *TaskSpec, startedAt time.Time, tempDir string) ba
 	}
 }

+func (e *Executor) ensureTempDir() error {
+	if err := os.MkdirAll(e.tempDir, 0o755); err != nil {
+		return fmt.Errorf("create agent temp dir: %w", err)
+	}
+	return nil
+}
+
+func parseStringListField(value string) []string {
+	trimmed := strings.TrimSpace(value)
+	if trimmed == "" || trimmed == "[]" {
+		return nil
+	}
+	var jsonItems []string
+	if err := json.Unmarshal([]byte(trimmed), &jsonItems); err == nil {
+		return compactStringList(jsonItems)
+	}
+	return compactStringList(strings.FieldsFunc(trimmed, func(r rune) bool {
+		return r == '\n' || r == '\r'
+	}))
+}
+
+func compactStringList(items []string) []string {
+	result := make([]string, 0, len(items))
+	for _, item := range items {
+		if trimmed := strings.TrimSpace(item); trimmed != "" {
+			result = append(result, trimmed)
+		}
+	}
+	return result
+}
+
 // recordLogger 把 runner 日志回传到 Master 记录。
 // 实现 backup.LogWriter，每条日志追加到 record.log_content。
 type recordLogger struct {
@@ -238,6 +301,208 @@ func (l *recordLogger) WriteLine(message string) {
 	_ = l.client.UpdateRecord(l.ctx, l.recordID, RecordUpdate{LogAppend: message + "\n"})
 }

+// restoreLogger 把 runner 日志回传到 Master 恢复记录。
+type restoreLogger struct {
+	ctx       context.Context
+	client    *MasterClient
+	restoreID uint
+}
+
+func newRestoreLogger(ctx context.Context, client *MasterClient, restoreID uint) *restoreLogger {
+	return &restoreLogger{ctx: ctx, client: client, restoreID: restoreID}
+}
+
+func (l *restoreLogger) WriteLine(message string) {
+	_ = l.client.UpdateRestore(l.ctx, l.restoreID, RestoreUpdate{LogAppend: message + "\n"})
+}
+
+// DeleteStorageObject 在 Agent 本机上删除指定存储对象（供跨节点清理调用）。
+func (e *Executor) DeleteStorageObject(ctx context.Context, targetType string, targetConfig map[string]any, storagePath string) error {
+	provider, err := e.storageRegistry.Create(ctx, targetType, targetConfig)
+	if err != nil {
+		return fmt.Errorf("create provider: %w", err)
+	}
+	return provider.Delete(ctx, storagePath)
+}
+
+// ExecuteRestore 处理 restore_record 命令：拉规格 → 下载 → 解压 → 执行 runner.Restore → 上报结果。
+//
+// 与 ExecuteRunTask 对称，但方向相反：
+//   - 下载：通过 spec.Storage 创建 provider → Download(spec.StoragePath)
+//   - 解密：当前 Agent 不支持加密恢复（密钥未下发），spec.Encrypt=true 会直接失败
+//   - 执行：backup.Registry.Runner(spec.Type).Restore
+//   - 上报：通过 UpdateRestore（status/logAppend）
+func (e *Executor) ExecuteRestore(ctx context.Context, restoreRecordID uint) error {
+	if err := e.ensureTempDir(); err != nil {
+		e.reportRestoreFailure(ctx, restoreRecordID, err.Error())
+		return err
+	}
+
+	spec, err := e.client.GetRestoreSpec(ctx, restoreRecordID)
+	if err != nil {
+		e.reportRestoreFailure(ctx, restoreRecordID, fmt.Sprintf("拉取恢复规格失败: %v", err))
+		return err
+	}
+	if spec.Encrypt {
+		msg := "Agent 不支持加密恢复（加密密钥仅在 Master 端持有）"
+		e.reportRestoreFailure(ctx, restoreRecordID, msg)
+		return fmt.Errorf("%s", msg)
+	}
+	e.appendRestoreLog(ctx, restoreRecordID, fmt.Sprintf("[agent] 开始恢复 %s (type=%s)\n", spec.TaskName, spec.Type))
+
+	tmpDir, err := os.MkdirTemp(e.tempDir, "restore-*")
+	if err != nil {
+		e.reportRestoreFailure(ctx, restoreRecordID, fmt.Sprintf("创建恢复临时目录失败: %v", err))
+		return err
+	}
+	defer os.RemoveAll(tmpDir)
+
+	// 1) 创建 storage provider
+	var rawConfig map[string]any
+	if len(spec.Storage.Config) > 0 {
+		if err := jsonUnmarshalMap(spec.Storage.Config, &rawConfig); err != nil {
+			e.reportRestoreFailure(ctx, restoreRecordID, fmt.Sprintf("解析存储配置失败: %v", err))
+			return err
+		}
+	}
+	provider, err := e.storageRegistry.Create(ctx, spec.Storage.Type, rawConfig)
+	if err != nil {
+		e.reportRestoreFailure(ctx, restoreRecordID, fmt.Sprintf("创建存储客户端失败: %v", err))
+		return err
+	}
+
+	// 2) 下载
+	fileName := spec.FileName
+	if strings.TrimSpace(fileName) == "" {
+		fileName = filepath.Base(spec.StoragePath)
+	}
+	artifactPath := filepath.Join(tmpDir, filepath.Base(fileName))
+	e.appendRestoreLog(ctx, restoreRecordID, fmt.Sprintf("[agent] 下载备份文件 %s\n", spec.StoragePath))
+	reader, err := provider.Download(ctx, spec.StoragePath)
+	if err != nil {
+		e.reportRestoreFailure(ctx, restoreRecordID, fmt.Sprintf("下载备份失败: %v", err))
+		return err
+	}
+	if err := writeReaderToLocal(artifactPath, reader); err != nil {
+		e.reportRestoreFailure(ctx, restoreRecordID, fmt.Sprintf("写入备份文件失败: %v", err))
+		return err
+	}
+
+	// 2.5) 完整性校验：还原前比对下载对象的 SHA-256（与 Master 本地恢复路径一致）。
+	// 拒绝还原损坏或被篡改的备份；早期无 checksum 的备份跳过（向后兼容）。
+	if strings.TrimSpace(spec.Checksum) != "" {
+		e.appendRestoreLog(ctx, restoreRecordID, "[agent] 校验备份完整性（SHA-256）\n")
+		actual, sumErr := computeFileSHA256(artifactPath)
+		if sumErr != nil {
+			msg := fmt.Sprintf("计算校验和失败: %v", sumErr)
+			e.reportRestoreFailure(ctx, restoreRecordID, msg)
+			return fmt.Errorf("%s", msg)
+		}
+		if !strings.EqualFold(actual, spec.Checksum) {
+			msg := "备份文件完整性校验失败：SHA-256 不匹配，文件可能已损坏或被篡改"
+			e.reportRestoreFailure(ctx, restoreRecordID, msg)
+			return fmt.Errorf("%s（期望 %s，实际 %s）", msg, spec.Checksum, actual)
+		}
+		e.appendRestoreLog(ctx, restoreRecordID, "[agent] 完整性校验通过\n")
+	}
+
+	// 3) 解压（Agent 不支持加密，遇到 .enc 会直接失败）
+	preparedPath := artifactPath
+	if strings.HasSuffix(strings.ToLower(preparedPath), ".enc") {
+		msg := "检测到加密后缀，Agent 不支持加密恢复"
+		e.reportRestoreFailure(ctx, restoreRecordID, msg)
+		return fmt.Errorf("%s", msg)
+	}
+	if strings.HasSuffix(strings.ToLower(preparedPath), ".gz") {
+		e.appendRestoreLog(ctx, restoreRecordID, "[agent] 解压 gzip 压缩\n")
+		decompressed, err := compress.GunzipFile(preparedPath)
+		if err != nil {
+			e.reportRestoreFailure(ctx, restoreRecordID, fmt.Sprintf("解压失败: %v", err))
+			return err
+		}
+		preparedPath = decompressed
+	}
+	if strings.HasSuffix(strings.ToLower(preparedPath), ".zst") {
+		e.appendRestoreLog(ctx, restoreRecordID, "[agent] 解压 zstd 压缩\n")
+		decompressed, err := compress.UnzstdFile(preparedPath)
+		if err != nil {
+			e.reportRestoreFailure(ctx, restoreRecordID, fmt.Sprintf("解压失败: %v", err))
+			return err
+		}
+		preparedPath = decompressed
+	}
+
+	// 4) 运行 runner.Restore
+	taskSpec := buildRestoreBackupTaskSpec(spec, time.Now().UTC(), tmpDir)
+	runner, err := e.backupRegistry.Runner(taskSpec.Type)
+	if err != nil {
+		e.reportRestoreFailure(ctx, restoreRecordID, fmt.Sprintf("不支持的备份类型: %v", err))
+		return err
+	}
+	logger := newRestoreLogger(ctx, e.client, restoreRecordID)
+	if err := runner.Restore(ctx, taskSpec, preparedPath, logger); err != nil {
+		e.reportRestoreFailure(ctx, restoreRecordID, err.Error())
+		return err
+	}
+
+	// 5) 上报成功
+	return e.client.UpdateRestore(ctx, restoreRecordID, RestoreUpdate{
+		Status:    "success",
+		LogAppend: "[agent] 恢复执行完成\n",
+	})
+}
+
+func (e *Executor) appendRestoreLog(ctx context.Context, restoreID uint, line string) {
+	_ = e.client.UpdateRestore(ctx, restoreID, RestoreUpdate{LogAppend: line})
+}
+
+func (e *Executor) reportRestoreFailure(ctx context.Context, restoreID uint, msg string) {
+	_ = e.client.UpdateRestore(ctx, restoreID, RestoreUpdate{
+		Status:       "failed",
+		ErrorMessage: msg,
+		LogAppend:    fmt.Sprintf("[agent] 错误: %s\n", msg),
+	})
+}
+
+// buildRestoreBackupTaskSpec 把 RestoreSpec 转成 backup.TaskSpec。
+func buildRestoreBackupTaskSpec(spec *RestoreSpec, startedAt time.Time, tempDir string) backup.TaskSpec {
+	return backup.TaskSpec{
+		ID:              spec.TaskID,
+		Name:            spec.TaskName,
+		Type:            spec.Type,
+		SourcePath:      spec.SourcePath,
+		SourcePaths:     spec.SourcePaths,
+		ExcludePatterns: nil,
+		Database: backup.DatabaseSpec{
+			Host:     spec.DBHost,
+			Port:     spec.DBPort,
+			User:     spec.DBUser,
+			Password: spec.DBPassword,
+			Path:     spec.DBPath,
+			Names:    splitCommaOrNewline(spec.DBName),
+		},
+		Compression: spec.Compression,
+		Encrypt:     spec.Encrypt,
+		StartedAt:   startedAt,
+		TempDir:     tempDir,
+	}
+}
+
+// writeReaderToLocal 把 reader 写到本地文件（Agent 侧工具函数）。
+func writeReaderToLocal(targetPath string, reader io.ReadCloser) error {
+	defer reader.Close()
+	if err := os.MkdirAll(filepath.Dir(targetPath), 0o755); err != nil {
+		return err
+	}
+	file, err := os.Create(targetPath)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+	_, err = io.Copy(file, reader)
+	return err
+}
+
 // 辅助函数

 func computeFileSHA256(path string) (string, error) {
--- a/server/internal/agent/executor_test.go
+++ b/server/internal/agent/executor_test.go
@@ -0,0 +1,233 @@
+package agent
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"reflect"
+	"strings"
+	"testing"
+	"time"
+
+	"backupx/server/internal/storage"
+)
+
+func TestBuildBackupTaskSpecParsesJSONSourcePaths(t *testing.T) {
+	spec := &TaskSpec{
+		TaskID:          7,
+		Name:            "root-files",
+		Type:            "file",
+		SourcePaths:     `["/root","/etc"]`,
+		ExcludePatterns: `["*.log","tmp"]`,
+	}
+
+	got := buildBackupTaskSpec(spec, time.Unix(0, 0), "/var/lib/backupx-agent/tmp")
+
+	if !reflect.DeepEqual(got.SourcePaths, []string{"/root", "/etc"}) {
+		t.Fatalf("source paths = %#v", got.SourcePaths)
+	}
+	if !reflect.DeepEqual(got.ExcludePatterns, []string{"*.log", "tmp"}) {
+		t.Fatalf("exclude patterns = %#v", got.ExcludePatterns)
+	}
+}
+
+func TestParseStringListFieldKeepsLegacyLineFormat(t *testing.T) {
+	got := parseStringListField("/root\n /etc \n")
+	want := []string{"/root", "/etc"}
+	if !reflect.DeepEqual(got, want) {
+		t.Fatalf("paths = %#v, want %#v", got, want)
+	}
+}
+
+func TestExecuteRunTaskRecordsPerTargetUploadResults(t *testing.T) {
+	sourceDir := t.TempDir()
+	if err := os.WriteFile(filepath.Join(sourceDir, "index.html"), []byte("hello"), 0o644); err != nil {
+		t.Fatalf("WriteFile returned error: %v", err)
+	}
+	var finalUpdate RecordUpdate
+	var updates []RecordUpdate
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch {
+		case r.Method == http.MethodGet && r.URL.Path == "/api/agent/tasks/1":
+			writeAgentEnvelope(t, w, TaskSpec{
+				TaskID:      1,
+				Name:        "site",
+				Type:        "file",
+				SourcePath:  sourceDir,
+				Compression: "gzip",
+				StorageTargets: []StorageTargetConfig{
+					{ID: 11, Name: "broken", Type: "agent_test_storage", Config: json.RawMessage(`{"name":"broken"}`)},
+					{ID: 12, Name: "ok", Type: "agent_test_storage", Config: json.RawMessage(`{"name":"ok"}`)},
+				},
+			})
+		case r.Method == http.MethodPost && r.URL.Path == "/api/agent/records/99":
+			var update RecordUpdate
+			if err := json.NewDecoder(r.Body).Decode(&update); err != nil {
+				t.Fatalf("Decode update returned error: %v", err)
+			}
+			updates = append(updates, update)
+			if update.Status != "" {
+				finalUpdate = update
+			}
+			writeAgentEnvelope(t, w, map[string]string{"status": "ok"})
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	defer server.Close()
+
+	executor := NewExecutor(NewMasterClient(server.URL, "token", false), filepath.Join(t.TempDir(), "tmp"))
+	executor.storageRegistry = storage.NewRegistry(&agentTestStorageFactory{
+		providers: map[string]*agentTestStorageProvider{
+			"broken": {name: "broken", failUpload: true},
+			"ok":     {name: "ok", objects: map[string][]byte{}},
+		},
+	})
+
+	if err := executor.ExecuteRunTask(context.Background(), 1, 99); err != nil {
+		t.Fatalf("ExecuteRunTask returned error: %v", err)
+	}
+	if len(updates) == 0 || finalUpdate.Status != "success" {
+		t.Fatalf("expected final success update, got updates=%#v final=%#v", updates, finalUpdate)
+	}
+	if finalUpdate.StorageTargetID != 12 {
+		t.Fatalf("expected first successful target 12, got %d", finalUpdate.StorageTargetID)
+	}
+	if len(finalUpdate.StorageUploadResults) != 2 {
+		t.Fatalf("expected two upload results, got %#v", finalUpdate.StorageUploadResults)
+	}
+	if finalUpdate.StorageUploadResults[0].Status != "failed" || finalUpdate.StorageUploadResults[1].Status != "success" {
+		t.Fatalf("unexpected upload results: %#v", finalUpdate.StorageUploadResults)
+	}
+	if finalUpdate.StoragePath == "" || finalUpdate.FileSize <= 0 || finalUpdate.Checksum == "" {
+		t.Fatalf("expected artifact metadata in final update, got %#v", finalUpdate)
+	}
+}
+
+func TestExecuteRunTaskReportsPerTargetUploadResultsWhenAllTargetsFail(t *testing.T) {
+	sourceDir := t.TempDir()
+	if err := os.WriteFile(filepath.Join(sourceDir, "index.html"), []byte("hello"), 0o644); err != nil {
+		t.Fatalf("WriteFile returned error: %v", err)
+	}
+	var finalUpdate RecordUpdate
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch {
+		case r.Method == http.MethodGet && r.URL.Path == "/api/agent/tasks/1":
+			writeAgentEnvelope(t, w, TaskSpec{
+				TaskID:      1,
+				Name:        "site",
+				Type:        "file",
+				SourcePath:  sourceDir,
+				Compression: "gzip",
+				StorageTargets: []StorageTargetConfig{
+					{ID: 11, Name: "broken-a", Type: "agent_test_storage", Config: json.RawMessage(`{"name":"broken-a"}`)},
+					{ID: 12, Name: "broken-b", Type: "agent_test_storage", Config: json.RawMessage(`{"name":"broken-b"}`)},
+				},
+			})
+		case r.Method == http.MethodPost && r.URL.Path == "/api/agent/records/99":
+			var update RecordUpdate
+			if err := json.NewDecoder(r.Body).Decode(&update); err != nil {
+				t.Fatalf("Decode update returned error: %v", err)
+			}
+			if update.Status != "" {
+				finalUpdate = update
+			}
+			writeAgentEnvelope(t, w, map[string]string{"status": "ok"})
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	defer server.Close()
+
+	executor := NewExecutor(NewMasterClient(server.URL, "token", false), filepath.Join(t.TempDir(), "tmp"))
+	executor.storageRegistry = storage.NewRegistry(&agentTestStorageFactory{
+		providers: map[string]*agentTestStorageProvider{
+			"broken-a": {name: "broken-a", failUpload: true},
+			"broken-b": {name: "broken-b", failUpload: true},
+		},
+	})
+
+	if err := executor.ExecuteRunTask(context.Background(), 1, 99); err == nil {
+		t.Fatal("expected ExecuteRunTask to return upload failure")
+	}
+	if finalUpdate.Status != "failed" {
+		t.Fatalf("expected final failed update, got %#v", finalUpdate)
+	}
+	if len(finalUpdate.StorageUploadResults) != 2 {
+		t.Fatalf("expected failed update to keep per-target results, got %#v", finalUpdate.StorageUploadResults)
+	}
+	for _, item := range finalUpdate.StorageUploadResults {
+		if item.Status != "failed" || item.Error == "" {
+			t.Fatalf("unexpected upload result: %#v", item)
+		}
+	}
+}
+
+type agentTestStorageFactory struct {
+	providers map[string]*agentTestStorageProvider
+}
+
+func (f *agentTestStorageFactory) Type() storage.ProviderType {
+	return "agent_test_storage"
+}
+
+func (f *agentTestStorageFactory) New(_ context.Context, config map[string]any) (storage.StorageProvider, error) {
+	name, _ := config["name"].(string)
+	provider := f.providers[name]
+	if provider == nil {
+		return nil, fmt.Errorf("unknown provider %q", name)
+	}
+	return provider, nil
+}
+
+type agentTestStorageProvider struct {
+	name       string
+	failUpload bool
+	objects    map[string][]byte
+}
+
+func (p *agentTestStorageProvider) Type() storage.ProviderType { return "agent_test_storage" }
+func (p *agentTestStorageProvider) TestConnection(context.Context) error {
+	return nil
+}
+func (p *agentTestStorageProvider) Upload(_ context.Context, objectKey string, reader io.Reader, _ int64, _ map[string]string) error {
+	if p.failUpload {
+		return fmt.Errorf("upload failed for %s", p.name)
+	}
+	data, err := io.ReadAll(reader)
+	if err != nil {
+		return err
+	}
+	if p.objects == nil {
+		p.objects = map[string][]byte{}
+	}
+	p.objects[objectKey] = data
+	return nil
+}
+func (p *agentTestStorageProvider) Download(_ context.Context, objectKey string) (io.ReadCloser, error) {
+	data, ok := p.objects[objectKey]
+	if !ok {
+		return nil, fmt.Errorf("object %s not found", objectKey)
+	}
+	return io.NopCloser(strings.NewReader(string(data))), nil
+}
+func (p *agentTestStorageProvider) Delete(_ context.Context, objectKey string) error {
+	delete(p.objects, objectKey)
+	return nil
+}
+func (p *agentTestStorageProvider) List(context.Context, string) ([]storage.ObjectInfo, error) {
+	return nil, nil
+}
+
+func writeAgentEnvelope(t *testing.T, w http.ResponseWriter, data any) {
+	t.Helper()
+	w.Header().Set("Content-Type", "application/json")
+	if err := json.NewEncoder(w).Encode(map[string]any{"code": "OK", "data": data}); err != nil {
+		t.Fatalf("Encode response returned error: %v", err)
+	}
+}
--- a/server/internal/agent/fs.go
+++ b/server/internal/agent/fs.go
@@ -5,6 +5,7 @@ import (
 	"os"
 	"path/filepath"
 	"sort"
+	"strings"
 )

 // DirEntry Agent 返回给 Master 的目录项。
@@ -17,8 +18,8 @@ type DirEntry struct {

 // listLocalDir 列出 Agent 所在机器的指定路径。
 func listLocalDir(path string) ([]DirEntry, error) {
-	cleaned := filepath.Clean(path)
-	if cleaned == "" {
+	cleaned := filepath.Clean(strings.TrimSpace(path))
+	if strings.TrimSpace(path) == "" || cleaned == "." {
 		cleaned = "/"
 	}
 	entries, err := os.ReadDir(cleaned)
--- a/server/internal/agent/fs_test.go
+++ b/server/internal/agent/fs_test.go
@@ -36,6 +36,21 @@ func TestListLocalDir(t *testing.T) {
 	}
 }

+func TestListLocalDirEmptyPathUsesRoot(t *testing.T) {
+	entries, err := listLocalDir("")
+	if err != nil {
+		t.Fatalf("list root: %v", err)
+	}
+	if len(entries) == 0 {
+		t.Fatalf("expected root entries")
+	}
+	for _, entry := range entries {
+		if !filepath.IsAbs(entry.Path) {
+			t.Fatalf("entry path should be absolute: %+v", entry)
+		}
+	}
+}
+
 func TestSplitCommaOrNewline(t *testing.T) {
 	cases := []struct {
 		in  string
--- a/server/internal/app/app.go
+++ b/server/internal/app/app.go
@@ -13,6 +13,7 @@ import (
 	"backupx/server/internal/database"
 	aphttp "backupx/server/internal/http"
 	"backupx/server/internal/logger"
+	"backupx/server/internal/metrics"
 	"backupx/server/internal/notify"
 	"backupx/server/internal/repository"
 	"backupx/server/internal/scheduler"
@@ -59,9 +60,9 @@ func New(ctx context.Context, cfg config.Config, version string) (*Application,

 	jwtManager := security.NewJWTManager(resolvedSecurity.JWTSecret, config.MustJWTDuration(cfg.Security))
 	rateLimiter := security.NewLoginRateLimiter(5, time.Minute)
-	authService := service.NewAuthService(userRepo, systemConfigRepo, jwtManager, rateLimiter)
-	systemService := service.NewSystemService(cfg, version, time.Now().UTC())
 	configCipher := codec.NewConfigCipher(resolvedSecurity.EncryptionKey)
+	authService := service.NewAuthService(userRepo, systemConfigRepo, jwtManager, rateLimiter, configCipher)
+	systemService := service.NewSystemService(cfg, version, time.Now().UTC())
 	storageRegistry := storage.NewRegistry(
 		storageRclone.NewLocalDiskFactory(),
 		storageRclone.NewS3Factory(),
@@ -80,11 +81,13 @@ func New(ctx context.Context, cfg config.Config, version string) (*Application,
 	storageTargetService.SetBackupRecordRepository(backupRecordRepo)
 	backupTaskService := service.NewBackupTaskService(backupTaskRepo, storageTargetRepo, configCipher)
 	backupTaskService.SetRecordsAndStorage(backupRecordRepo, storageRegistry)
-	backupRunnerRegistry := backup.NewRegistry(backup.NewFileRunner(), backup.NewSQLiteRunner(), backup.NewMySQLRunner(nil), backup.NewPostgreSQLRunner(nil), backup.NewSAPHANARunner(nil))
+	// nodeRepo 在下方 Cluster 节点管理区块才实例化，这里延后注入
+	backupRunnerRegistry := backup.NewRegistry(backup.NewFileRunner(), backup.NewSQLiteRunner(), backup.NewMySQLRunner(nil), backup.NewPostgreSQLRunner(nil), backup.NewSAPHANARunner(nil), backup.NewMongoDBRunner(nil))
 	logHub := backup.NewLogHub()
 	retentionService := backupretention.NewService(backupRecordRepo)
 	notifyRegistry := notify.NewRegistry(notify.NewEmailNotifier(), notify.NewWebhookNotifier(), notify.NewTelegramNotifier())
 	notificationService := service.NewNotificationService(notificationRepo, notifyRegistry, configCipher)
+	authService.SetNotificationService(notificationService)
 	// 初始化 rclone 传输配置（重试 + 带宽限制）
 	rcloneCtx := storageRclone.ConfiguredContext(ctx, storageRclone.TransferConfig{
 		LowLevelRetries: cfg.Backup.Retries,
@@ -97,7 +100,11 @@ func New(ctx context.Context, cfg config.Config, version string) (*Application,
 	backupTaskService.SetScheduler(schedulerService)
 	// 审计日志注入延迟到 auditService 创建后（见下方）
 	backupRecordService := service.NewBackupRecordService(backupRecordRepo, backupExecutionService, logHub)
+	// 恢复服务：使用独立 LogHub 避免恢复记录与备份记录 ID 命名空间冲突
+	restoreRecordRepo := repository.NewRestoreRecordRepository(db)
+	restoreLogHub := backup.NewLogHub()
 	dashboardService := service.NewDashboardService(backupTaskRepo, backupRecordRepo, storageTargetRepo)
+	reportService := service.NewReportService(backupTaskRepo, backupRecordRepo)
 	settingsService := service.NewSettingsService(systemConfigRepo)

 	// Audit
@@ -105,12 +112,18 @@ func New(ctx context.Context, cfg config.Config, version string) (*Application,
 	auditService := service.NewAuditService(auditLogRepo)
 	authService.SetAuditService(auditService)
 	schedulerService.SetAuditRecorder(auditService)
+	// 审计日志外输：启动时用当前 settings 初始化 webhook，后续前端修改立即生效
+	settingsService.SetAuditWebhookConfigurer(ctx, auditService)
+	// 审计日志保留期清理：每 6h 读取 audit_retention_days 设置并清理超期日志（0/缺省=永久保留）
+	auditService.StartRetentionMonitor(ctx, systemConfigRepo, 6*time.Hour)

-	// Database discovery
+	// Database discovery（集群依赖在 agentService 创建后注入）
 	databaseDiscoveryService := service.NewDatabaseDiscoveryService(backup.NewOSCommandExecutor())

 	// Cluster: Node management
 	nodeRepo := repository.NewNodeRepository(db)
+	backupTaskService.SetNodeRepository(nodeRepo)
+	schedulerService.SetNodeRepository(nodeRepo)
 	nodeService := service.NewNodeService(nodeRepo, version)
 	nodeService.SetTaskRepository(backupTaskRepo)
 	if err := nodeService.EnsureLocalNode(ctx); err != nil {
@@ -121,33 +134,156 @@ func New(ctx context.Context, cfg config.Config, version string) (*Application,

 	// Agent 协议服务：命令队列 + 任务下发 + 记录上报
 	agentCmdRepo := repository.NewAgentCommandRepository(db)
+	nodeService.SetAgentCommandRepository(agentCmdRepo)
 	agentService := service.NewAgentService(nodeRepo, backupTaskRepo, backupRecordRepo, storageTargetRepo, agentCmdRepo, configCipher)
+	agentService.SetRestoreRepository(restoreRecordRepo)
 	agentService.StartCommandTimeoutMonitor(ctx, 30*time.Second, 10*time.Minute)
+
+	// 一键部署：install token service + 后台 GC
+	installTokenRepo := repository.NewAgentInstallTokenRepository(db)
+	installTokenService := service.NewInstallTokenService(installTokenRepo, nodeRepo)
+	installTokenService.StartGC(ctx, time.Hour)
+
 	// 把 Agent 下发能力注入到备份执行服务，实现多节点路由
 	backupExecutionService.SetClusterDependencies(nodeRepo, agentService)
 	// 启用远程目录浏览：NodeService 通过 AgentService 做同步 RPC
 	nodeService.SetAgentRPC(agentService)
+	// 启用远程数据库发现：远程节点任务配置时 DatabasePicker 拿到的是节点视角的 DB 列表
+	databaseDiscoveryService.SetClusterDependencies(nodeRepo, agentService)
+
+	// 恢复服务：集群感知（本地/远程路由），依赖 agentService 入队
+	restoreService := service.NewRestoreService(
+		restoreRecordRepo,
+		backupRecordRepo,
+		backupTaskRepo,
+		storageTargetRepo,
+		nodeRepo,
+		storageRegistry,
+		backupRunnerRegistry,
+		restoreLogHub,
+		configCipher,
+		agentService,
+		cfg.Backup.TempDir,
+		cfg.Backup.MaxConcurrent,
+	)
+
+	// 验证服务：定期校验备份可恢复性（企业合规刚需）
+	verificationRecordRepo := repository.NewVerificationRecordRepository(db)
+	verifyLogHub := backup.NewLogHub()
+	verificationService := service.NewVerificationService(
+		verificationRecordRepo,
+		backupRecordRepo,
+		backupTaskRepo,
+		storageTargetRepo,
+		nodeRepo,
+		storageRegistry,
+		verifyLogHub,
+		configCipher,
+		cfg.Backup.TempDir,
+		cfg.Backup.MaxConcurrent,
+	)
+	// 验证失败通知：通过 NotificationService 的事件总线派发 verify_failed
+	verificationService.SetNotifier(service.NewVerificationEventNotifier(notificationService))
+	// 恢复完成/失败事件派发（restore_success / restore_failed）
+	restoreService.SetEventDispatcher(notificationService)
+	// 调度器接入验证演练 cron
+	schedulerService.SetVerifyRunner(verificationService)
+
+	// 用户管理与 API Key 服务（企业级 RBAC）
+	userService := service.NewUserService(userRepo)
+	apiKeyRepo := repository.NewApiKeyRepository(db)
+	apiKeyService := service.NewApiKeyService(apiKeyRepo)
+
+	// SLA 后台扫描：每 15 分钟扫描违约任务，同任务 6 小时内不重复派发
+	dashboardService.StartSLAMonitor(ctx, notificationService, 15*time.Minute, 6*time.Hour)
+	// 存储目标健康扫描：每 5 分钟测试启用目标，掉线即告警
+	storageTargetService.StartHealthMonitor(ctx, notificationService, 5*time.Minute)
+
+	// 备份复制服务（3-2-1 规则核心）
+	replicationRecordRepo := repository.NewReplicationRecordRepository(db)
+	replicationService := service.NewReplicationService(
+		replicationRecordRepo, backupRecordRepo, storageTargetRepo,
+		nodeRepo, storageRegistry, configCipher,
+		cfg.Backup.TempDir, cfg.Backup.MaxConcurrent,
+	)
+	replicationService.SetEventDispatcher(notificationService)
+	backupExecutionService.SetReplicationTrigger(replicationService)
+	// 备份成功后触发下游依赖任务（任务依赖链工作流）
+	backupExecutionService.SetDependentsResolver(backupTaskService)
+
+	// 任务模板（批量创建）
+	taskTemplateRepo := repository.NewTaskTemplateRepository(db)
+	taskTemplateService := service.NewTaskTemplateService(taskTemplateRepo, backupTaskService)
+
+	// 任务配置导入/导出（JSON，集群迁移 & 灾备）
+	taskExportService := service.NewTaskExportService(backupTaskService, backupTaskRepo, storageTargetRepo, nodeRepo)
+
+	// 全局搜索（跨任务/存储/节点/最近记录）
+	searchService := service.NewSearchService(backupTaskRepo, backupRecordRepo, storageTargetRepo, nodeRepo)
+
+	// 实时事件广播器（SSE 推送给前端 Dashboard）
+	// 注入 notification 后，每次 DispatchEvent 同时 broadcast 到所有 SSE 订阅者
+	eventBroadcaster := service.NewEventBroadcaster()
+	notificationService.SetBroadcaster(eventBroadcaster)
+
+	// 集群版本监控：每 30 分钟扫描，节点 24 小时内只告警一次
+	clusterVersionMonitor := service.NewClusterVersionMonitor(nodeRepo, version)
+	clusterVersionMonitor.SetEventDispatcher(notificationService)
+	clusterVersionMonitor.Start(ctx, 30*time.Minute, 24*time.Hour)
+
+	// Dashboard 集群概览依赖注入
+	dashboardService.SetClusterDependencies(nodeRepo, version)
+
+	// Prometheus 指标采集：Counter/Histogram 由业务服务实时写入；
+	// Gauge 类（存储用量、节点在线、SLA 违约）由 Collector 每 30s 异步刷新，
+	// 避免 /metrics 请求路径做慢 IO。
+	appMetrics := metrics.New(version)
+	backupExecutionService.SetMetrics(appMetrics)
+	restoreService.SetMetrics(appMetrics)
+	verificationService.SetMetrics(appMetrics)
+	replicationService.SetMetrics(appMetrics)
+	metricsCollector := metrics.NewCollector(
+		appMetrics,
+		metrics.NewRepoSource(storageTargetRepo, backupRecordRepo, nodeRepo, backupTaskRepo, agentCmdRepo),
+		30*time.Second,
+	)
+	metricsCollector.Start(ctx)

 	router := aphttp.NewRouter(aphttp.RouterDependencies{
-		Config:                 cfg,
-		Version:                version,
-		Logger:                 appLogger,
-		AuthService:            authService,
-		SystemService:          systemService,
-		StorageTargetService:   storageTargetService,
-		BackupTaskService:      backupTaskService,
-		BackupExecutionService: backupExecutionService,
-		BackupRecordService:    backupRecordService,
-		NotificationService:    notificationService,
-		DashboardService:       dashboardService,
-		SettingsService:        settingsService,
+		Context:                  ctx,
+		Config:                   cfg,
+		Version:                  version,
+		Logger:                   appLogger,
+		AuthService:              authService,
+		SystemService:            systemService,
+		StorageTargetService:     storageTargetService,
+		BackupTaskService:        backupTaskService,
+		BackupExecutionService:   backupExecutionService,
+		BackupRecordService:      backupRecordService,
+		RestoreService:           restoreService,
+		VerificationService:      verificationService,
+		ReplicationService:       replicationService,
+		TaskTemplateService:      taskTemplateService,
+		TaskExportService:        taskExportService,
+		SearchService:            searchService,
+		EventBroadcaster:         eventBroadcaster,
+		UserService:              userService,
+		ApiKeyService:            apiKeyService,
+		NotificationService:      notificationService,
+		DashboardService:         dashboardService,
+		ReportService:            reportService,
+		SettingsService:          settingsService,
 		NodeService:              nodeService,
 		AgentService:             agentService,
 		DatabaseDiscoveryService: databaseDiscoveryService,
-		AuditService:            auditService,
+		AuditService:             auditService,
 		JWTManager:               jwtManager,
-		UserRepository:         userRepo,
-		SystemConfigRepo:       systemConfigRepo,
+		UserRepository:           userRepo,
+		SystemConfigRepo:         systemConfigRepo,
+		InstallTokenService:      installTokenService,
+		MasterExternalURL:        cfg.Server.ExternalURL,
+		DB:                       db,
+		Metrics:                  appMetrics,
 	})

 	httpServer := &stdhttp.Server{
--- a/server/internal/backup/discover.go
+++ b/server/internal/backup/discover.go
@@ -0,0 +1,119 @@
+package backup
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"strings"
+	"time"
+)
+
+// DiscoverRequest 数据库发现请求参数。
+// Type 取 "mysql" 或 "postgresql"。
+type DiscoverRequest struct {
+	Type     string
+	Host     string
+	Port     int
+	User     string
+	Password string
+}
+
+// DiscoverDatabases 通过本机 mysql/psql 客户端连接目标数据库并列出非系统库。
+// 5 秒命令超时。调用方负责传入 CommandExecutor（Master 用 OSCommandExecutor，
+// Agent 同理）。此函数不依赖 service / apperror，便于在 agent 包复用。
+func DiscoverDatabases(ctx context.Context, executor CommandExecutor, req DiscoverRequest) ([]string, error) {
+	switch strings.TrimSpace(strings.ToLower(req.Type)) {
+	case "mysql":
+		return discoverMySQLDatabases(ctx, executor, req)
+	case "postgresql":
+		return discoverPostgreSQLDatabases(ctx, executor, req)
+	default:
+		return nil, fmt.Errorf("unsupported database type: %s", req.Type)
+	}
+}
+
+func discoverMySQLDatabases(ctx context.Context, executor CommandExecutor, req DiscoverRequest) ([]string, error) {
+	mysqlPath, err := executor.LookPath("mysql")
+	if err != nil {
+		return nil, fmt.Errorf("系统未安装 mysql 客户端")
+	}
+	timeout, cancel := context.WithTimeout(ctx, 5*time.Second)
+	defer cancel()
+	var stdout, stderr bytes.Buffer
+	args := []string{
+		fmt.Sprintf("--host=%s", req.Host),
+		fmt.Sprintf("--port=%d", req.Port),
+		fmt.Sprintf("--user=%s", req.User),
+		"-e", "SHOW DATABASES",
+		"--skip-column-names",
+	}
+	env := []string{fmt.Sprintf("MYSQL_PWD=%s", req.Password)}
+	if err := executor.Run(timeout, mysqlPath, args, CommandOptions{
+		Stdout: &stdout,
+		Stderr: &stderr,
+		Env:    env,
+	}); err != nil {
+		errMsg := strings.TrimSpace(stderr.String())
+		if errMsg == "" {
+			errMsg = err.Error()
+		}
+		return nil, fmt.Errorf("连接 MySQL 失败：%s", errMsg)
+	}
+	systemDBs := map[string]bool{
+		"information_schema": true,
+		"performance_schema": true,
+		"mysql":              true,
+		"sys":                true,
+	}
+	var databases []string
+	for _, line := range strings.Split(stdout.String(), "\n") {
+		db := strings.TrimSpace(line)
+		if db == "" || systemDBs[db] {
+			continue
+		}
+		databases = append(databases, db)
+	}
+	return databases, nil
+}
+
+func discoverPostgreSQLDatabases(ctx context.Context, executor CommandExecutor, req DiscoverRequest) ([]string, error) {
+	psqlPath, err := executor.LookPath("psql")
+	if err != nil {
+		return nil, fmt.Errorf("系统未安装 psql 客户端")
+	}
+	timeout, cancel := context.WithTimeout(ctx, 5*time.Second)
+	defer cancel()
+	var stdout, stderr bytes.Buffer
+	args := []string{
+		"-h", req.Host,
+		"-p", fmt.Sprintf("%d", req.Port),
+		"-U", req.User,
+		"-d", "postgres",
+		"-t", "-A",
+		"-c", "SELECT datname FROM pg_database WHERE datistemplate = false ORDER BY datname",
+	}
+	env := []string{fmt.Sprintf("PGPASSWORD=%s", req.Password)}
+	if err := executor.Run(timeout, psqlPath, args, CommandOptions{
+		Stdout: &stdout,
+		Stderr: &stderr,
+		Env:    env,
+	}); err != nil {
+		errMsg := strings.TrimSpace(stderr.String())
+		if errMsg == "" {
+			errMsg = err.Error()
+		}
+		return nil, fmt.Errorf("连接 PostgreSQL 失败：%s", errMsg)
+	}
+	skipDBs := map[string]bool{
+		"postgres": true,
+	}
+	var databases []string
+	for _, line := range strings.Split(stdout.String(), "\n") {
+		db := strings.TrimSpace(line)
+		if db == "" || skipDBs[db] || strings.HasPrefix(db, "template") {
+			continue
+		}
+		databases = append(databases, db)
+	}
+	return databases, nil
+}
--- a/server/internal/backup/file_runner.go
+++ b/server/internal/backup/file_runner.go
@@ -3,6 +3,7 @@ package backup
 import (
 	"archive/tar"
 	"context"
+	"encoding/json"
 	"fmt"
 	"io"
 	"os"
@@ -52,6 +53,20 @@ func (r *FileRunner) Run(_ context.Context, task TaskSpec, writer LogWriter) (*R
 	defer tw.Close()

 	excludes := normalizeExcludePatterns(task.ExcludePatterns)
+
+	// 差异备份：基于上次全量清单仅打包新增/变更条目并记录删除；
+	// 全量备份：记录完整清单（manifest）供后续差异比对。
+	differential := task.Differential && len(task.BaseManifest.Entries) > 0
+	baseIndex := map[string]ManifestEntry{}
+	seen := map[string]struct{}{}
+	var manifest *Manifest
+	if differential {
+		baseIndex = task.BaseManifest.index()
+		writer.WriteLine(fmt.Sprintf("差异备份模式：基线含 %d 个条目", len(baseIndex)))
+	} else {
+		manifest = &Manifest{Entries: make([]ManifestEntry, 0)}
+	}
+
 	totalFileCount := 0
 	totalDirCount := 0

@@ -88,6 +103,16 @@ func (r *FileRunner) Run(_ context.Context, task TaskSpec, writer LogWriter) (*R
 				return nil
 			}

+			entry := entryFromInfo(archiveName, currentInfo)
+			if differential {
+				seen[entry.Path] = struct{}{}
+				if !changedSince(baseIndex, entry) {
+					return nil // 自全量以来未变更，跳过
+				}
+			} else {
+				manifest.Entries = append(manifest.Entries, entry)
+			}
+
 			if currentInfo.IsDir() {
 				dirCount++
 				writer.WriteLine(fmt.Sprintf("📁 进入目录 %s", archiveName))
@@ -103,13 +128,19 @@ func (r *FileRunner) Run(_ context.Context, task TaskSpec, writer LogWriter) (*R
 			}

 			if currentInfo.Mode().IsRegular() {
-				file, err := os.Open(currentPath)
-				if err != nil {
-					return err
-				}
-				defer file.Close()
-				if _, err := io.CopyN(tw, file, currentInfo.Size()); err != nil && err != io.EOF {
-					return err
+				// 每个文件在独立作用域内打开并关闭，避免在大目录树中累积打开的文件句柄。
+				if copyErr := func() error {
+					file, err := os.Open(currentPath)
+					if err != nil {
+						return err
+					}
+					defer file.Close()
+					if _, err := io.CopyN(tw, file, currentInfo.Size()); err != nil && err != io.EOF {
+						return err
+					}
+					return nil
+				}(); copyErr != nil {
+					return copyErr
 				}
 				fileCount++
 				if fileCount%100 == 0 {
@@ -130,10 +161,16 @@ func (r *FileRunner) Run(_ context.Context, task TaskSpec, writer LogWriter) (*R
 		totalDirCount += dirCount
 	}

-	if len(sourcePaths) > 1 {
+	if differential {
+		deletions := deletedPaths(baseIndex, seen)
+		if err := writeDeletionsEntry(tw, deletions); err != nil {
+			return nil, err
+		}
+		writer.WriteLine(fmt.Sprintf("差异备份完成（%d 个目录、%d 个文件变更，删除 %d 项）", totalDirCount, totalFileCount, len(deletions)))
+	} else if len(sourcePaths) > 1 {
 		writer.WriteLine(fmt.Sprintf("全部源路径打包完成（共 %d 个目录，%d 个文件）", totalDirCount, totalFileCount))
 	}
-	return &RunResult{ArtifactPath: artifactPath, FileName: filepath.Base(artifactPath), TempDir: tempDir}, nil
+	return &RunResult{ArtifactPath: artifactPath, FileName: filepath.Base(artifactPath), TempDir: tempDir, Manifest: manifest}, nil
 }

 func (r *FileRunner) Restore(_ context.Context, task TaskSpec, artifactPath string, writer LogWriter) error {
@@ -151,6 +188,7 @@ func (r *FileRunner) Restore(_ context.Context, task TaskSpec, artifactPath stri
 	if err := os.MkdirAll(targetParent, 0o755); err != nil {
 		return fmt.Errorf("create restore parent: %w", err)
 	}
+	var pendingDeletions []string
 	tr := tar.NewReader(artifactFile)
 	for {
 		header, err := tr.Next()
@@ -160,13 +198,27 @@ func (r *FileRunner) Restore(_ context.Context, task TaskSpec, artifactPath stri
 		if err != nil {
 			return fmt.Errorf("read tar entry: %w", err)
 		}
+		// 差异归档的删除清单不落地，留待提取完成后统一应用（避免被同批新增条目误删）。
+		if header.Name == deletionsEntryName {
+			data, readErr := io.ReadAll(tr)
+			if readErr != nil {
+				return fmt.Errorf("read deletions entry: %w", readErr)
+			}
+			if jsonErr := json.Unmarshal(data, &pendingDeletions); jsonErr != nil {
+				return fmt.Errorf("parse deletions entry: %w", jsonErr)
+			}
+			continue
+		}
 		cleanName := path.Clean(strings.TrimSpace(header.Name))
 		if cleanName == "." || cleanName == "" {
 			continue
 		}
-		targetPath := filepath.Clean(filepath.Join(targetParent, filepath.FromSlash(cleanName)))
-		parentWithSep := filepath.Clean(targetParent) + string(filepath.Separator)
-		if targetPath != filepath.Clean(targetParent) && !strings.HasPrefix(targetPath, parentWithSep) {
+		// 选择性恢复：仅提取被选中的文件/目录（及其子项）。
+		if len(task.SelectedPaths) > 0 && !pathSelected(cleanName, task.SelectedPaths) {
+			continue
+		}
+		targetPath, ok := resolveWithinParent(targetParent, cleanName)
+		if !ok {
 			return fmt.Errorf("tar entry escapes restore path")
 		}
 		switch header.Typeflag {
@@ -191,10 +243,94 @@ func (r *FileRunner) Restore(_ context.Context, task TaskSpec, artifactPath stri
 			}
 		}
 	}
+	// 选择性恢复时仅对选中范围应用删除，避免误删未选中的文件。
+	if len(task.SelectedPaths) > 0 {
+		pendingDeletions = filterSelectedPaths(pendingDeletions, task.SelectedPaths)
+	}
+	if err := applyDeletions(targetParent, pendingDeletions, writer); err != nil {
+		return err
+	}
 	writer.WriteLine("文件恢复完成")
 	return nil
 }

+// pathSelected 判断归档条目名是否落在选中集合内（精确匹配或位于选中目录之下）。
+func pathSelected(name string, selected []string) bool {
+	for _, sel := range selected {
+		clean := path.Clean(strings.TrimSpace(sel))
+		if clean == "" || clean == "." {
+			continue
+		}
+		if name == clean || strings.HasPrefix(name, clean+"/") {
+			return true
+		}
+	}
+	return false
+}
+
+// filterSelectedPaths 仅保留落在选中集合内的路径。
+func filterSelectedPaths(paths []string, selected []string) []string {
+	filtered := make([]string, 0, len(paths))
+	for _, p := range paths {
+		if pathSelected(path.Clean(strings.TrimSpace(p)), selected) {
+			filtered = append(filtered, p)
+		}
+	}
+	return filtered
+}
+
+// resolveWithinParent 将归档相对名安全解析为 targetParent 下的绝对路径；
+// 越界（路径穿越）时返回 ok=false。提取与删除共用此校验，杜绝逃逸。
+func resolveWithinParent(targetParent, name string) (string, bool) {
+	targetPath := filepath.Clean(filepath.Join(targetParent, filepath.FromSlash(name)))
+	cleanParent := filepath.Clean(targetParent)
+	if targetPath == cleanParent {
+		return targetPath, true
+	}
+	if !strings.HasPrefix(targetPath, cleanParent+string(filepath.Separator)) {
+		return "", false
+	}
+	return targetPath, true
+}
+
+// writeDeletionsEntry 将差异备份的删除路径列表写入归档特殊条目。
+func writeDeletionsEntry(tw *tar.Writer, deletions []string) error {
+	payload, err := json.Marshal(deletions)
+	if err != nil {
+		return fmt.Errorf("marshal deletions: %w", err)
+	}
+	header := &tar.Header{Name: deletionsEntryName, Mode: 0o600, Size: int64(len(payload)), Typeflag: tar.TypeReg}
+	if err := tw.WriteHeader(header); err != nil {
+		return fmt.Errorf("write deletions header: %w", err)
+	}
+	if _, err := tw.Write(payload); err != nil {
+		return fmt.Errorf("write deletions body: %w", err)
+	}
+	return nil
+}
+
+// applyDeletions 在基线恢复之上删除差异归档记录的路径（仅差异备份恢复时存在）。
+// 每个路径经 resolveWithinParent 校验，越界即报错；目标不存在视为已删除。
+func applyDeletions(targetParent string, deletions []string, writer LogWriter) error {
+	for _, name := range deletions {
+		clean := path.Clean(strings.TrimSpace(name))
+		if clean == "." || clean == "" {
+			continue
+		}
+		targetPath, ok := resolveWithinParent(targetParent, clean)
+		if !ok {
+			return fmt.Errorf("deletion entry escapes restore path")
+		}
+		if err := os.RemoveAll(targetPath); err != nil {
+			return fmt.Errorf("apply deletion %s: %w", clean, err)
+		}
+	}
+	if len(deletions) > 0 {
+		writer.WriteLine(fmt.Sprintf("已应用差异删除 %d 项", len(deletions)))
+	}
+	return nil
+}
+
 func normalizeExcludePatterns(items []string) []string {
 	result := make([]string, 0, len(items))
 	for _, item := range items {
--- a/server/internal/backup/file_runner_diff_test.go
+++ b/server/internal/backup/file_runner_diff_test.go
@@ -0,0 +1,182 @@
+package backup
+
+import (
+	"archive/tar"
+	"context"
+	"io"
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func diffWrite(t *testing.T, p, content string) {
+	t.Helper()
+	if err := os.MkdirAll(filepath.Dir(p), 0o755); err != nil {
+		t.Fatalf("mkdir %s: %v", filepath.Dir(p), err)
+	}
+	if err := os.WriteFile(p, []byte(content), 0o644); err != nil {
+		t.Fatalf("write %s: %v", p, err)
+	}
+}
+
+func diffAssertContent(t *testing.T, p, want string) {
+	t.Helper()
+	got, err := os.ReadFile(p)
+	if err != nil {
+		t.Fatalf("read %s: %v", p, err)
+	}
+	if string(got) != want {
+		t.Fatalf("%s content = %q, want %q", p, string(got), want)
+	}
+}
+
+func diffAssertAbsent(t *testing.T, p string) {
+	t.Helper()
+	if _, err := os.Stat(p); !os.IsNotExist(err) {
+		t.Fatalf("expected %s to be absent, stat err=%v", p, err)
+	}
+}
+
+func diffArchiveNames(t *testing.T, artifactPath string) map[string]bool {
+	t.Helper()
+	f, err := os.Open(artifactPath)
+	if err != nil {
+		t.Fatalf("open artifact: %v", err)
+	}
+	defer f.Close()
+	names := map[string]bool{}
+	tr := tar.NewReader(f)
+	for {
+		h, err := tr.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			t.Fatalf("read tar: %v", err)
+		}
+		names[h.Name] = true
+	}
+	return names
+}
+
+// TestFileRunnerDifferentialRoundTrip 验证差异备份的端到端正确性：
+// 全量 → 修改源（变更/删除/新增）→ 差异 → 链式恢复（全量+差异）→ 结果与修改后源一致。
+func TestFileRunnerDifferentialRoundTrip(t *testing.T) {
+	work := t.TempDir()
+	src := filepath.Join(work, "src")
+	diffWrite(t, filepath.Join(src, "a.txt"), "alpha")
+	diffWrite(t, filepath.Join(src, "b.txt"), "bravo")
+	diffWrite(t, filepath.Join(src, "sub", "c.txt"), "charlie")
+
+	runner := NewFileRunner()
+
+	full, err := runner.Run(context.Background(), TaskSpec{Name: "diff", Type: "file", SourcePath: src, TempDir: t.TempDir()}, NopLogWriter{})
+	if err != nil {
+		t.Fatalf("full Run: %v", err)
+	}
+	if full.Manifest == nil || len(full.Manifest.Entries) == 0 {
+		t.Fatalf("full backup must produce a manifest, got %#v", full.Manifest)
+	}
+
+	// 变更 a.txt（内容变长 → size 差异必被检出）、删除 b.txt、新增 d.txt；sub/c.txt 不变
+	diffWrite(t, filepath.Join(src, "a.txt"), "ALPHA-modified-and-longer")
+	if err := os.Remove(filepath.Join(src, "b.txt")); err != nil {
+		t.Fatalf("remove b.txt: %v", err)
+	}
+	diffWrite(t, filepath.Join(src, "d.txt"), "delta")
+
+	diff, err := runner.Run(context.Background(), TaskSpec{Name: "diff", Type: "file", SourcePath: src, TempDir: t.TempDir(), Differential: true, BaseManifest: *full.Manifest}, NopLogWriter{})
+	if err != nil {
+		t.Fatalf("differential Run: %v", err)
+	}
+	if diff.Manifest != nil {
+		t.Fatalf("differential backup must not produce a manifest")
+	}
+
+	// 差异归档应包含变更/新增条目与删除清单，但不含未变更的 sub/c.txt
+	names := diffArchiveNames(t, diff.ArtifactPath)
+	if !names["src/a.txt"] || !names["src/d.txt"] {
+		t.Fatalf("differential archive missing changed/new entries: %v", names)
+	}
+	if names["src/sub/c.txt"] {
+		t.Fatalf("differential archive should not contain unchanged file sub/c.txt")
+	}
+	if !names[deletionsEntryName] {
+		t.Fatalf("differential archive missing deletions entry: %v", names)
+	}
+
+	// 链式恢复到全新目标
+	restoreRoot := t.TempDir()
+	restoreSrc := filepath.Join(restoreRoot, "src")
+	restoreTask := TaskSpec{Name: "diff", Type: "file", SourcePath: restoreSrc}
+	if err := runner.Restore(context.Background(), restoreTask, full.ArtifactPath, NopLogWriter{}); err != nil {
+		t.Fatalf("restore full: %v", err)
+	}
+	if err := runner.Restore(context.Background(), restoreTask, diff.ArtifactPath, NopLogWriter{}); err != nil {
+		t.Fatalf("restore differential: %v", err)
+	}
+
+	diffAssertContent(t, filepath.Join(restoreSrc, "a.txt"), "ALPHA-modified-and-longer")
+	diffAssertContent(t, filepath.Join(restoreSrc, "sub", "c.txt"), "charlie")
+	diffAssertContent(t, filepath.Join(restoreSrc, "d.txt"), "delta")
+	diffAssertAbsent(t, filepath.Join(restoreSrc, "b.txt"))
+}
+
+func TestPathSelected(t *testing.T) {
+	sel := []string{"src/a.txt", "src/sub"}
+	cases := map[string]bool{
+		"src/a.txt":     true,
+		"src/sub":       true,
+		"src/sub/c.txt": true,  // 选中目录下的子项
+		"src/b.txt":     false, // 未选中文件
+		"src/subother":  false, // 前缀相近但非子项，不应误判
+	}
+	for name, want := range cases {
+		if got := pathSelected(name, sel); got != want {
+			t.Errorf("pathSelected(%q) = %v, want %v", name, got, want)
+		}
+	}
+}
+
+// TestFileRunnerSelectiveRestore 验证按需恢复：仅选中的文件与目录被还原，未选中的文件不出现。
+func TestFileRunnerSelectiveRestore(t *testing.T) {
+	work := t.TempDir()
+	src := filepath.Join(work, "src")
+	diffWrite(t, filepath.Join(src, "a.txt"), "alpha")
+	diffWrite(t, filepath.Join(src, "b.txt"), "bravo")
+	diffWrite(t, filepath.Join(src, "sub", "c.txt"), "charlie")
+
+	runner := NewFileRunner()
+	full, err := runner.Run(context.Background(), TaskSpec{Name: "sel", Type: "file", SourcePath: src, TempDir: t.TempDir()}, NopLogWriter{})
+	if err != nil {
+		t.Fatalf("full Run: %v", err)
+	}
+
+	restoreRoot := t.TempDir()
+	restoreSrc := filepath.Join(restoreRoot, "src")
+	task := TaskSpec{Name: "sel", Type: "file", SourcePath: restoreSrc, SelectedPaths: []string{"src/a.txt", "src/sub"}}
+	if err := runner.Restore(context.Background(), task, full.ArtifactPath, NopLogWriter{}); err != nil {
+		t.Fatalf("selective Restore: %v", err)
+	}
+	diffAssertContent(t, filepath.Join(restoreSrc, "a.txt"), "alpha")
+	diffAssertContent(t, filepath.Join(restoreSrc, "sub", "c.txt"), "charlie") // 选中目录 → 子项一并恢复
+	diffAssertAbsent(t, filepath.Join(restoreSrc, "b.txt"))                     // 未选中 → 不恢复
+}
+
+// TestFileRunnerDifferentialWithoutBaseIsFull 验证无基线时差异请求回退为全量（产出清单、含全部文件）。
+func TestFileRunnerDifferentialWithoutBaseIsFull(t *testing.T) {
+	src := filepath.Join(t.TempDir(), "src")
+	diffWrite(t, filepath.Join(src, "a.txt"), "alpha")
+
+	runner := NewFileRunner()
+	res, err := runner.Run(context.Background(), TaskSpec{Name: "diff", Type: "file", SourcePath: src, TempDir: t.TempDir(), Differential: true}, NopLogWriter{})
+	if err != nil {
+		t.Fatalf("Run: %v", err)
+	}
+	if res.Manifest == nil {
+		t.Fatalf("differential without base must fall back to full and produce a manifest")
+	}
+	if names := diffArchiveNames(t, res.ArtifactPath); !names["src/a.txt"] || names[deletionsEntryName] {
+		t.Fatalf("fallback-full archive unexpected: %v", names)
+	}
+}
--- a/server/internal/backup/manifest.go
+++ b/server/internal/backup/manifest.go
@@ -0,0 +1,92 @@
+package backup
+
+import (
+	"encoding/json"
+	"os"
+	"path/filepath"
+	"sort"
+)
+
+// deletionsEntryName 是差异备份归档中记录「自全量以来被删除路径」的特殊条目名。
+// 恢复时该条目不落地为文件，而是用于在基线之上删除对应路径。
+const deletionsEntryName = ".backupx/deletions.json"
+
+// ManifestEntry 记录一次全量备份中单个归档条目（文件或目录）的指纹，
+// 供差异备份比对「自全量以来的变化」。Path 为归档内相对名（slash 分隔，
+// 与 tar header.Name 一致）。字段使用短键以压缩清单体积。
+type ManifestEntry struct {
+	Path      string `json:"p"`
+	Size      int64  `json:"s"`
+	ModTimeNs int64  `json:"m"`
+	Mode      uint32 `json:"o"`
+	IsDir     bool   `json:"d,omitempty"`
+}
+
+// Manifest 是一次全量备份的完整条目清单（文件与目录）。
+type Manifest struct {
+	Entries []ManifestEntry `json:"entries"`
+}
+
+// EncodeManifest 将清单序列化为紧凑 JSON。
+func EncodeManifest(m Manifest) ([]byte, error) {
+	return json.Marshal(m)
+}
+
+// DecodeManifest 反序列化清单；空输入返回空清单（视为「无基线」）。
+func DecodeManifest(data []byte) (Manifest, error) {
+	m := Manifest{}
+	if len(data) == 0 {
+		return m, nil
+	}
+	if err := json.Unmarshal(data, &m); err != nil {
+		return Manifest{}, err
+	}
+	return m, nil
+}
+
+// index 构建 path -> entry 映射，便于差异比对 O(1) 查找。
+func (m Manifest) index() map[string]ManifestEntry {
+	idx := make(map[string]ManifestEntry, len(m.Entries))
+	for _, e := range m.Entries {
+		idx[e.Path] = e
+	}
+	return idx
+}
+
+// entryFromInfo 由归档名与文件信息构造指纹条目。
+func entryFromInfo(archiveName string, info os.FileInfo) ManifestEntry {
+	return ManifestEntry{
+		Path:      filepath.ToSlash(archiveName),
+		Size:      info.Size(),
+		ModTimeNs: info.ModTime().UnixNano(),
+		Mode:      uint32(info.Mode().Perm()),
+		IsDir:     info.IsDir(),
+	}
+}
+
+// changedSince 判断当前条目相对基线是否为「新增或变更」（即应纳入差异归档）。
+//   - 不在基线中 → 新增，纳入；
+//   - 已存在的目录 → 不携带数据，跳过（其下变更文件会各自判定）；
+//   - 文件大小或 mtime 变化 → 变更，纳入（rsync 风格启发式）。
+func changedSince(base map[string]ManifestEntry, cur ManifestEntry) bool {
+	prev, ok := base[cur.Path]
+	if !ok {
+		return true
+	}
+	if cur.IsDir {
+		return false
+	}
+	return prev.Size != cur.Size || prev.ModTimeNs != cur.ModTimeNs
+}
+
+// deletedPaths 返回基线中存在、但本次遍历未出现的路径（被删除的条目），按路径升序。
+func deletedPaths(base map[string]ManifestEntry, seen map[string]struct{}) []string {
+	deleted := make([]string, 0)
+	for p := range base {
+		if _, ok := seen[p]; !ok {
+			deleted = append(deleted, p)
+		}
+	}
+	sort.Strings(deleted)
+	return deleted
+}
--- a/server/internal/backup/manifest_test.go
+++ b/server/internal/backup/manifest_test.go
@@ -0,0 +1,79 @@
+package backup
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestEncodeDecodeManifestRoundTrip(t *testing.T) {
+	m := Manifest{Entries: []ManifestEntry{
+		{Path: "src/a.txt", Size: 10, ModTimeNs: 100, Mode: 0o644},
+		{Path: "src", Size: 0, ModTimeNs: 50, Mode: 0o755, IsDir: true},
+	}}
+	data, err := EncodeManifest(m)
+	if err != nil {
+		t.Fatalf("EncodeManifest: %v", err)
+	}
+	got, err := DecodeManifest(data)
+	if err != nil {
+		t.Fatalf("DecodeManifest: %v", err)
+	}
+	if !reflect.DeepEqual(got, m) {
+		t.Fatalf("roundtrip mismatch:\n got %#v\nwant %#v", got, m)
+	}
+}
+
+func TestDecodeManifestEmpty(t *testing.T) {
+	got, err := DecodeManifest(nil)
+	if err != nil {
+		t.Fatalf("DecodeManifest(nil): %v", err)
+	}
+	if len(got.Entries) != 0 {
+		t.Fatalf("expected empty manifest, got %#v", got)
+	}
+}
+
+func TestChangedSince(t *testing.T) {
+	base := Manifest{Entries: []ManifestEntry{
+		{Path: "a.txt", Size: 10, ModTimeNs: 100},
+		{Path: "dir", IsDir: true, ModTimeNs: 100},
+	}}.index()
+
+	cases := []struct {
+		name string
+		cur  ManifestEntry
+		want bool
+	}{
+		{"unchanged file", ManifestEntry{Path: "a.txt", Size: 10, ModTimeNs: 100}, false},
+		{"size changed", ManifestEntry{Path: "a.txt", Size: 11, ModTimeNs: 100}, true},
+		{"mtime changed", ManifestEntry{Path: "a.txt", Size: 10, ModTimeNs: 200}, true},
+		{"new file", ManifestEntry{Path: "b.txt", Size: 1, ModTimeNs: 1}, true},
+		{"existing dir skipped", ManifestEntry{Path: "dir", IsDir: true, ModTimeNs: 999}, false},
+		{"new dir included", ManifestEntry{Path: "newdir", IsDir: true, ModTimeNs: 1}, true},
+	}
+	for _, tc := range cases {
+		if got := changedSince(base, tc.cur); got != tc.want {
+			t.Errorf("%s: changedSince=%v want %v", tc.name, got, tc.want)
+		}
+	}
+}
+
+func TestDeletedPaths(t *testing.T) {
+	base := Manifest{Entries: []ManifestEntry{
+		{Path: "a"}, {Path: "b"}, {Path: "c"},
+	}}.index()
+	seen := map[string]struct{}{"a": {}, "c": {}}
+	got := deletedPaths(base, seen)
+	want := []string{"b"}
+	if !reflect.DeepEqual(got, want) {
+		t.Fatalf("deletedPaths=%v want %v", got, want)
+	}
+}
+
+func TestDeletedPathsNoneWhenAllSeen(t *testing.T) {
+	base := Manifest{Entries: []ManifestEntry{{Path: "a"}, {Path: "b"}}}.index()
+	seen := map[string]struct{}{"a": {}, "b": {}}
+	if got := deletedPaths(base, seen); len(got) != 0 {
+		t.Fatalf("expected no deletions, got %v", got)
+	}
+}
--- a/server/internal/backup/mongodb_runner.go
+++ b/server/internal/backup/mongodb_runner.go
@@ -0,0 +1,119 @@
+package backup
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// MongoDBRunner 通过 mongodump/mongorestore 备份与恢复 MongoDB 数据库。
+// 采用 --archive 流式模式（dump 写 stdout、restore 读 stdin），与 MySQLRunner
+// 的 mysqldump/mysql 管线保持一致；产物为未压缩的 mongo archive，由备份管线统一压缩/加密。
+type MongoDBRunner struct {
+	executor CommandExecutor
+}
+
+func NewMongoDBRunner(executor CommandExecutor) *MongoDBRunner {
+	if executor == nil {
+		executor = NewOSCommandExecutor()
+	}
+	return &MongoDBRunner{executor: executor}
+}
+
+func (r *MongoDBRunner) Type() string {
+	return "mongodb"
+}
+
+func (r *MongoDBRunner) Run(ctx context.Context, task TaskSpec, writer LogWriter) (*RunResult, error) {
+	if _, err := r.executor.LookPath("mongodump"); err != nil {
+		return nil, fmt.Errorf("未找到 mongodump 命令 (请确保服务器已安装 mongodb-database-tools)")
+	}
+	startedAt := task.StartedAt
+	if startedAt.IsZero() {
+		startedAt = time.Now().UTC()
+	}
+	tempDir, err := CreateTaskTempDir(task.Name, startedAt)
+	if err != nil {
+		return nil, err
+	}
+	fileName := BuildArtifactName(task.Name, startedAt, "archive")
+	artifactPath := filepath.Join(tempDir, fileName)
+	file, err := os.Create(artifactPath)
+	if err != nil {
+		return nil, fmt.Errorf("create mongodump archive file: %w", err)
+	}
+	defer file.Close()
+
+	args := mongoConnArgs(task.Database)
+	dbNames := normalizeDatabaseNames(task.Database.Names)
+	if len(dbNames) == 1 {
+		args = append(args, "--db", dbNames[0])
+		writer.WriteLine(fmt.Sprintf("备份数据库: %s", dbNames[0]))
+	} else {
+		writer.WriteLine("备份全部数据库")
+	}
+	args = append(args, "--archive") // 归档流式写入 stdout
+
+	writer.WriteLine(fmt.Sprintf("连接到 MongoDB: %s:%d", task.Database.Host, task.Database.Port))
+	stderrWriter := newLogLineWriter(writer, "mongodump")
+	writer.WriteLine("开始执行 mongodump")
+	if err := r.executor.Run(ctx, "mongodump", args, CommandOptions{Stdout: file, Stderr: stderrWriter}); err != nil {
+		return nil, fmt.Errorf("run mongodump: %w: %s", err, stderrWriter.collected())
+	}
+	info, err := file.Stat()
+	if err != nil {
+		return nil, fmt.Errorf("stat mongodump archive: %w", err)
+	}
+	if info.Size() == 0 {
+		return nil, fmt.Errorf("mongodump 产物为空，请检查数据库连接与权限")
+	}
+	writer.WriteLine(fmt.Sprintf("MongoDB 导出完成（文件大小: %s）", formatFileSize(info.Size())))
+	return &RunResult{ArtifactPath: artifactPath, FileName: fileName, TempDir: tempDir, Size: info.Size(), StorageKey: BuildStorageKey("mongodb", startedAt, fileName)}, nil
+}
+
+func (r *MongoDBRunner) Restore(ctx context.Context, task TaskSpec, artifactPath string, writer LogWriter) error {
+	if _, err := r.executor.LookPath("mongorestore"); err != nil {
+		return fmt.Errorf("未找到 mongorestore 命令 (请确保服务器已安装 mongodb-database-tools)")
+	}
+	input, err := os.Open(filepath.Clean(artifactPath))
+	if err != nil {
+		return fmt.Errorf("open mongodb restore archive: %w", err)
+	}
+	defer input.Close()
+
+	args := mongoConnArgs(task.Database)
+	// --drop：恢复前删除同名集合，保证恢复后与归档一致（与 mysql 恢复的整库覆盖语义对齐）。
+	args = append(args, "--drop", "--archive")
+	stderr := &bytes.Buffer{}
+	writer.WriteLine("开始执行 mongorestore")
+	if err := r.executor.Run(ctx, "mongorestore", args, CommandOptions{Stdin: input, Stderr: stderr}); err != nil {
+		return fmt.Errorf("run mongorestore: %w: %s", err, strings.TrimSpace(stderr.String()))
+	}
+	writer.WriteLine("MongoDB 恢复完成")
+	return nil
+}
+
+// mongoConnArgs 构造 mongodump/mongorestore 的连接与认证参数。
+// 注意：mongodb-database-tools 无类似 MYSQL_PWD 的密码环境变量，密码只能经 --password 传入；
+// 认证库默认 admin（绝大多数部署的管理账号所在库）。
+func mongoConnArgs(db DatabaseSpec) []string {
+	args := make([]string, 0, 8)
+	if strings.TrimSpace(db.Host) != "" {
+		args = append(args, "--host", db.Host)
+	}
+	if db.Port > 0 {
+		args = append(args, "--port", strconv.Itoa(db.Port))
+	}
+	if strings.TrimSpace(db.User) != "" {
+		args = append(args, "--username", db.User, "--authenticationDatabase", "admin")
+		if strings.TrimSpace(db.Password) != "" {
+			args = append(args, "--password", db.Password)
+		}
+	}
+	return args
+}
--- a/server/internal/backup/mongodb_runner_test.go
+++ b/server/internal/backup/mongodb_runner_test.go
@@ -0,0 +1,102 @@
+package backup
+
+import (
+	"context"
+	"errors"
+	"io"
+	"os"
+	"strings"
+	"testing"
+)
+
+func argIndex(args []string, target string) int {
+	for i, a := range args {
+		if a == target {
+			return i
+		}
+	}
+	return -1
+}
+
+func TestMongoDBRunnerRunUsesMongodump(t *testing.T) {
+	executor := &fakeCommandExecutor{runFunc: func(name string, args []string, options CommandOptions) error {
+		if options.Stdout != nil {
+			_, _ = io.WriteString(options.Stdout, "mongo archive bytes")
+		}
+		return nil
+	}}
+	runner := NewMongoDBRunner(executor)
+	result, err := runner.Run(context.Background(), TaskSpec{Name: "mongo", Type: "mongodb", Database: DatabaseSpec{Host: "127.0.0.1", Port: 27017, User: "admin", Password: "secret", Names: []string{"app"}}}, NopLogWriter{})
+	if err != nil {
+		t.Fatalf("Run returned error: %v", err)
+	}
+	if executor.lastName != "mongodump" {
+		t.Fatalf("expected mongodump, got %s", executor.lastName)
+	}
+	args := executor.lastArgs
+	if argIndex(args, "--archive") < 0 {
+		t.Fatalf("expected --archive flag, got %#v", args)
+	}
+	if i := argIndex(args, "--db"); i < 0 || i+1 >= len(args) || args[i+1] != "app" {
+		t.Fatalf("expected --db app, got %#v", args)
+	}
+	if i := argIndex(args, "--username"); i < 0 || args[i+1] != "admin" {
+		t.Fatalf("expected --username admin, got %#v", args)
+	}
+	if argIndex(args, "--authenticationDatabase") < 0 || argIndex(args, "--password") < 0 {
+		t.Fatalf("expected auth args, got %#v", args)
+	}
+	if _, err := os.Stat(result.ArtifactPath); err != nil {
+		t.Fatalf("artifact file missing: %v", err)
+	}
+	if result.StorageKey == "" || !strings.HasSuffix(result.FileName, ".archive") {
+		t.Fatalf("unexpected result metadata: %#v", result)
+	}
+}
+
+func TestMongoDBRunnerRunBackupsAllWhenNoDatabase(t *testing.T) {
+	executor := &fakeCommandExecutor{runFunc: func(name string, args []string, options CommandOptions) error {
+		_, _ = io.WriteString(options.Stdout, "all dbs")
+		return nil
+	}}
+	runner := NewMongoDBRunner(executor)
+	_, err := runner.Run(context.Background(), TaskSpec{Name: "mongo", Type: "mongodb", Database: DatabaseSpec{Host: "127.0.0.1", Port: 27017}}, NopLogWriter{})
+	if err != nil {
+		t.Fatalf("Run returned error: %v", err)
+	}
+	if argIndex(executor.lastArgs, "--db") >= 0 {
+		t.Fatalf("expected no --db when backing up all databases, got %#v", executor.lastArgs)
+	}
+}
+
+func TestMongoDBRunnerRunRejectsEmptyOutput(t *testing.T) {
+	executor := &fakeCommandExecutor{} // runFunc nil → writes nothing
+	runner := NewMongoDBRunner(executor)
+	_, err := runner.Run(context.Background(), TaskSpec{Name: "mongo", Type: "mongodb", Database: DatabaseSpec{Host: "127.0.0.1", Port: 27017, Names: []string{"app"}}}, NopLogWriter{})
+	if err == nil {
+		t.Fatal("expected error for empty mongodump output")
+	}
+}
+
+func TestMongoDBRunnerRestoreUsesMongorestore(t *testing.T) {
+	executor := &fakeCommandExecutor{}
+	runner := NewMongoDBRunner(executor)
+	artifact := filepathJoinTempFile(t, "dump.archive", "mongo archive bytes")
+	if err := runner.Restore(context.Background(), TaskSpec{Name: "mongo", Type: "mongodb", Database: DatabaseSpec{Host: "127.0.0.1", Port: 27017, User: "admin", Password: "secret"}}, artifact, NopLogWriter{}); err != nil {
+		t.Fatalf("Restore returned error: %v", err)
+	}
+	if executor.lastName != "mongorestore" {
+		t.Fatalf("expected mongorestore, got %s", executor.lastName)
+	}
+	if argIndex(executor.lastArgs, "--drop") < 0 || argIndex(executor.lastArgs, "--archive") < 0 {
+		t.Fatalf("expected --drop --archive, got %#v", executor.lastArgs)
+	}
+}
+
+func TestMongoDBRunnerRunReturnsLookupError(t *testing.T) {
+	runner := NewMongoDBRunner(&fakeCommandExecutor{lookupErr: errors.New("missing")})
+	_, err := runner.Run(context.Background(), TaskSpec{Name: "mongo", Type: "mongodb", Database: DatabaseSpec{Host: "127.0.0.1", Port: 27017, Names: []string{"app"}}}, NopLogWriter{})
+	if err == nil {
+		t.Fatal("expected error when mongodump is missing")
+	}
+}
--- a/server/internal/backup/retention/differential_test.go
+++ b/server/internal/backup/retention/differential_test.go
@@ -0,0 +1,55 @@
+package retention
+
+import (
+	"testing"
+
+	"backupx/server/internal/model"
+)
+
+func retentionRecIDs(records []model.BackupRecord) []uint {
+	ids := make([]uint, 0, len(records))
+	for _, r := range records {
+		ids = append(ids, r.ID)
+	}
+	return ids
+}
+
+// 基线全量仍被「不在删除集合中的差异」依赖 → 必须保留，否则差异无法恢复。
+func TestProtectDifferentialBasesKeepsBaseWithSurvivingDiff(t *testing.T) {
+	all := []model.BackupRecord{
+		{ID: 1, BackupKind: model.BackupKindFull},
+		{ID: 2, BackupKind: model.BackupKindDifferential, BaseRecordID: 1},
+	}
+	candidates := []model.BackupRecord{{ID: 1, BackupKind: model.BackupKindFull}}
+	if got := protectDifferentialBases(all, candidates); len(got) != 0 {
+		t.Fatalf("base with surviving diff must be protected, got %v", retentionRecIDs(got))
+	}
+}
+
+// 基线全量与其全部差异都在删除集合中 → 可一并删除（无残留差异失去基线）。
+func TestProtectDifferentialBasesDeletesBaseWhenDiffAlsoDeleted(t *testing.T) {
+	all := []model.BackupRecord{
+		{ID: 1, BackupKind: model.BackupKindFull},
+		{ID: 2, BackupKind: model.BackupKindDifferential, BaseRecordID: 1},
+	}
+	candidates := []model.BackupRecord{
+		{ID: 1, BackupKind: model.BackupKindFull},
+		{ID: 2, BackupKind: model.BackupKindDifferential, BaseRecordID: 1},
+	}
+	if got := protectDifferentialBases(all, candidates); len(got) != 2 {
+		t.Fatalf("base+diff both expired should both be deleted, got %v", retentionRecIDs(got))
+	}
+}
+
+// 无差异备份时原样透传（不影响既有全量保留逻辑）。
+func TestProtectDifferentialBasesNoDiffsPassThrough(t *testing.T) {
+	all := []model.BackupRecord{
+		{ID: 1, BackupKind: model.BackupKindFull},
+		{ID: 2, BackupKind: model.BackupKindFull},
+	}
+	candidates := []model.BackupRecord{{ID: 1, BackupKind: model.BackupKindFull}}
+	got := protectDifferentialBases(all, candidates)
+	if len(got) != 1 || got[0].ID != 1 {
+		t.Fatalf("no diffs should pass through unchanged, got %v", retentionRecIDs(got))
+	}
+}
--- a/server/internal/backup/retention/service.go
+++ b/server/internal/backup/retention/service.go
@@ -3,6 +3,7 @@ package retention
 import (
 	"context"
 	"fmt"
+	"sort"
 	"strings"
 	"time"

@@ -56,7 +57,15 @@ func (s *Service) Cleanup(ctx context.Context, task *model.BackupTask, provider
 	if err != nil {
 		return nil, fmt.Errorf("list successful records: %w", err)
 	}
-	candidates := selectRecordsToDelete(records, task.RetentionDays, task.MaxBackups, s.now())
+	var candidates []model.BackupRecord
+	if gfsEnabled(task) {
+		// GFS 策略：按天/周/月/年分层保留代表性备份，取代简单的天数/数量策略。
+		candidates = selectGFSToDelete(records, task.KeepDaily, task.KeepWeekly, task.KeepMonthly, task.KeepYearly)
+	} else {
+		candidates = selectRecordsToDelete(records, task.RetentionDays, task.MaxBackups, s.now())
+	}
+	// 差异链保护：保留仍被存活差异依赖的全量，避免删除基线后差异无法恢复。
+	candidates = protectDifferentialBases(records, candidates)
 	result := &CleanupResult{}
 	for _, record := range candidates {
 		if strings.TrimSpace(record.StoragePath) != "" {
@@ -90,7 +99,50 @@ func (s *Service) Cleanup(ctx context.Context, task *model.BackupTask, provider
 	return result, nil
 }

+// protectDifferentialBases 从删除候选中剔除「仍被存活差异依赖的全量」，
+// 避免删除基线后其差异备份失去依据、无法恢复。全量仅当其全部差异都已过期/删除时才会被清理。
+func protectDifferentialBases(all []model.BackupRecord, candidates []model.BackupRecord) []model.BackupRecord {
+	deleting := make(map[uint]struct{}, len(candidates))
+	for _, r := range candidates {
+		deleting[r.ID] = struct{}{}
+	}
+	protected := make(map[uint]struct{})
+	for _, r := range all {
+		if r.BackupKind != model.BackupKindDifferential || r.BaseRecordID == 0 {
+			continue
+		}
+		if _, beingDeleted := deleting[r.ID]; beingDeleted {
+			continue // 该差异本身也将被删除，无需保护其基线
+		}
+		protected[r.BaseRecordID] = struct{}{}
+	}
+	if len(protected) == 0 {
+		return candidates
+	}
+	filtered := make([]model.BackupRecord, 0, len(candidates))
+	for _, r := range candidates {
+		if r.BackupKind == model.BackupKindFull {
+			if _, keep := protected[r.ID]; keep {
+				continue
+			}
+		}
+		filtered = append(filtered, r)
+	}
+	return filtered
+}
+
 func selectRecordsToDelete(records []model.BackupRecord, retentionDays int, maxBackups int, now time.Time) []model.BackupRecord {
+	// 保留锁定（法律保留）的记录永不参与清理：先从候选集中剔除，
+	// 锁定备份既不被删除，也不占用 maxBackups 轮转名额。
+	if hasLocked(records) {
+		unlocked := make([]model.BackupRecord, 0, len(records))
+		for _, r := range records {
+			if !r.Locked {
+				unlocked = append(unlocked, r)
+			}
+		}
+		records = unlocked
+	}
 	selected := make(map[uint]model.BackupRecord)
 	if maxBackups > 0 && len(records) > maxBackups {
 		for _, record := range records[maxBackups:] {
@@ -113,3 +165,81 @@ func selectRecordsToDelete(records []model.BackupRecord, retentionDays int, maxB
 	}
 	return result
 }
+
+func hasLocked(records []model.BackupRecord) bool {
+	for i := range records {
+		if records[i].Locked {
+			return true
+		}
+	}
+	return false
+}
+
+// gfsEnabled 判定任务是否启用 GFS 分层保留（任一层级 > 0）。
+func gfsEnabled(task *model.BackupTask) bool {
+	return task.KeepDaily > 0 || task.KeepWeekly > 0 || task.KeepMonthly > 0 || task.KeepYearly > 0
+}
+
+func recordTime(r *model.BackupRecord) time.Time {
+	if r.CompletedAt != nil {
+		return *r.CompletedAt
+	}
+	return r.StartedAt
+}
+
+func isoWeekKey(t time.Time) string {
+	y, w := t.ISOWeek()
+	return fmt.Sprintf("%d-W%02d", y, w)
+}
+
+// selectGFSToDelete 按 GFS（祖父-父-子）策略选出应删除的记录。
+//
+// 规则：对每个层级（天/周/月/年），在按时间降序排列后，保留最近 keep 个不同周期中
+// 每个周期最新的一份备份；各层级保留集合取并集即「保留集」，其余删除。
+// 锁定（法律保留）的记录始终排除在删除候选之外。
+func selectGFSToDelete(records []model.BackupRecord, daily, weekly, monthly, yearly int) []model.BackupRecord {
+	active := make([]model.BackupRecord, 0, len(records))
+	for i := range records {
+		if !records[i].Locked {
+			active = append(active, records[i])
+		}
+	}
+	sort.SliceStable(active, func(i, j int) bool {
+		return recordTime(&active[i]).After(recordTime(&active[j]))
+	})
+
+	keep := make(map[uint]bool, len(active))
+	keepTier := func(count int, key func(time.Time) string) {
+		if count <= 0 {
+			return
+		}
+		periods := 0
+		lastPeriod := ""
+		havePrev := false
+		for i := range active {
+			p := key(recordTime(&active[i]))
+			if havePrev && p == lastPeriod {
+				continue // 同周期已保留代表（最新一份）
+			}
+			if periods >= count {
+				break // 该层级已保留足够多的周期
+			}
+			keep[active[i].ID] = true
+			lastPeriod = p
+			havePrev = true
+			periods++
+		}
+	}
+	keepTier(daily, func(t time.Time) string { return t.Format("2006-01-02") })
+	keepTier(weekly, isoWeekKey)
+	keepTier(monthly, func(t time.Time) string { return t.Format("2006-01") })
+	keepTier(yearly, func(t time.Time) string { return t.Format("2006") })
+
+	del := make([]model.BackupRecord, 0)
+	for i := range active {
+		if !keep[active[i].ID] {
+			del = append(del, active[i])
+		}
+	}
+	return del
+}
--- a/server/internal/backup/retention/service_test.go
+++ b/server/internal/backup/retention/service_test.go
@@ -24,6 +24,9 @@ func (r *fakeRecordRepository) List(context.Context, repository.BackupRecordList
 func (r *fakeRecordRepository) FindByID(context.Context, uint) (*model.BackupRecord, error) {
 	return nil, nil
 }
+func (r *fakeRecordRepository) FindRunningByTaskAndNode(context.Context, uint, uint) (*model.BackupRecord, error) {
+	return nil, nil
+}
 func (r *fakeRecordRepository) Create(context.Context, *model.BackupRecord) error { return nil }
 func (r *fakeRecordRepository) Update(context.Context, *model.BackupRecord) error { return nil }
 func (r *fakeRecordRepository) Delete(_ context.Context, id uint) error {
@@ -42,6 +45,9 @@ func (r *fakeRecordRepository) ListByTask(_ context.Context, _ uint) ([]model.Ba
 func (r *fakeRecordRepository) ListSuccessfulByTask(_ context.Context, _ uint) ([]model.BackupRecord, error) {
 	return r.records, nil
 }
+func (r *fakeRecordRepository) CountDependentDifferentials(context.Context, uint) (int64, error) {
+	return 0, nil
+}
 func (r *fakeRecordRepository) Count(context.Context) (int64, error)                 { return 0, nil }
 func (r *fakeRecordRepository) CountSince(context.Context, time.Time) (int64, error) { return 0, nil }
 func (r *fakeRecordRepository) CountSuccessSince(context.Context, time.Time) (int64, error) {
@@ -90,6 +96,105 @@ func TestSelectRecordsToDelete(t *testing.T) {
 	}
 }

+func gfsRecord(id uint, ts time.Time, locked bool) model.BackupRecord {
+	completed := ts
+	return model.BackupRecord{ID: id, StartedAt: ts, CompletedAt: &completed, Locked: locked}
+}
+
+func gfsDay(y, m, d, h int) time.Time {
+	return time.Date(y, time.Month(m), d, h, 0, 0, 0, time.UTC)
+}
+
+func deletedIDSet(records []model.BackupRecord) map[uint]bool {
+	out := make(map[uint]bool, len(records))
+	for i := range records {
+		out[records[i].ID] = true
+	}
+	return out
+}
+
+func assertDeleted(t *testing.T, del []model.BackupRecord, want ...uint) {
+	t.Helper()
+	got := deletedIDSet(del)
+	if len(got) != len(want) {
+		t.Fatalf("deleted set size = %d %v, want %d %v", len(got), got, len(want), want)
+	}
+	for _, id := range want {
+		if !got[id] {
+			t.Fatalf("expected id %d to be deleted; got %v", id, got)
+		}
+	}
+}
+
+// TestSelectGFSToDelete_DailyTier 验证按天分层：每天仅保留最新一份，且只保留最近 N 天。
+func TestSelectGFSToDelete_DailyTier(t *testing.T) {
+	records := []model.BackupRecord{
+		gfsRecord(5, gfsDay(2026, 3, 7, 12), false), // 今天，最新 → 保留
+		gfsRecord(4, gfsDay(2026, 3, 7, 6), false),  // 今天，较早 → 删除（非当天代表）
+		gfsRecord(3, gfsDay(2026, 3, 6, 12), false), // 昨天 → 保留
+		gfsRecord(2, gfsDay(2026, 3, 5, 12), false), // 前天 → 超出 daily=2 → 删除
+		gfsRecord(1, gfsDay(2026, 3, 4, 12), false), // 更早 → 删除
+	}
+	del := selectGFSToDelete(records, 2, 0, 0, 0)
+	assertDeleted(t, del, 4, 2, 1)
+}
+
+// TestSelectGFSToDelete_TierUnion 验证多层级取并集：月度层级保留日度层级会删除的旧备份。
+func TestSelectGFSToDelete_TierUnion(t *testing.T) {
+	records := []model.BackupRecord{
+		gfsRecord(3, gfsDay(2026, 3, 7, 12), false),  // 3 月（最新）
+		gfsRecord(2, gfsDay(2026, 2, 15, 12), false), // 2 月
+		gfsRecord(1, gfsDay(2026, 1, 15, 12), false), // 1 月
+	}
+	// daily=1 只留 ID3；monthly=2 留最近两个月（3 月=ID3、2 月=ID2）。并集={3,2}，删除 ID1。
+	del := selectGFSToDelete(records, 1, 0, 2, 0)
+	assertDeleted(t, del, 1)
+}
+
+// TestSelectGFSToDelete_SkipsLocked 验证锁定记录即使超出所有层级也永不删除。
+func TestSelectGFSToDelete_SkipsLocked(t *testing.T) {
+	records := []model.BackupRecord{
+		gfsRecord(3, gfsDay(2026, 3, 7, 12), false),
+		gfsRecord(2, gfsDay(2026, 3, 6, 12), false),
+		gfsRecord(1, gfsDay(2020, 1, 1, 12), true), // 远超 daily=1 但已锁定 → 不删
+	}
+	del := selectGFSToDelete(records, 1, 0, 0, 0)
+	assertDeleted(t, del, 2) // 仅 ID2 被删；ID1 锁定豁免，ID3 为当日代表
+}
+
+func TestGFSEnabled(t *testing.T) {
+	if gfsEnabled(&model.BackupTask{}) {
+		t.Fatal("empty GFS config should be disabled")
+	}
+	if !gfsEnabled(&model.BackupTask{KeepWeekly: 4}) {
+		t.Fatal("KeepWeekly>0 should enable GFS")
+	}
+}
+
+// TestSelectRecordsToDelete_SkipsLocked 验证保留锁定（法律保留）的记录永不被选中删除，
+// 即使它既超过保留期、又超过 maxBackups 名额。
+func TestSelectRecordsToDelete_SkipsLocked(t *testing.T) {
+	now := time.Date(2026, 3, 7, 16, 0, 0, 0, time.UTC)
+	completedNew := now.Add(-24 * time.Hour)
+	completedOld := now.Add(-15 * 24 * time.Hour)
+	records := []model.BackupRecord{
+		{ID: 3, CompletedAt: &completedNew},
+		{ID: 2, CompletedAt: &completedNew},
+		{ID: 1, CompletedAt: &completedOld, Locked: true}, // 超期但锁定 → 不应删除
+	}
+	selected := selectRecordsToDelete(records, 7, 2, now)
+	for _, r := range selected {
+		if r.ID == 1 {
+			t.Fatalf("locked record #1 must never be selected for deletion: %#v", selected)
+		}
+	}
+	// 锁定记录不占 maxBackups 名额：未锁定仅 2 条，maxBackups=2 → 无超额删除，
+	// 且无未锁定记录超期 → 选中集为空。
+	if len(selected) != 0 {
+		t.Fatalf("expected no deletions (locked excluded), got %#v", selected)
+	}
+}
+
 func TestCleanupDeletesExpiredRecords(t *testing.T) {
 	now := time.Date(2026, 3, 7, 16, 0, 0, 0, time.UTC)
 	completedNew := now.Add(-24 * time.Hour)
--- a/server/internal/backup/types.go
+++ b/server/internal/backup/types.go
@@ -36,6 +36,12 @@ type TaskSpec struct {
 	MaxBackups        int
 	StartedAt         time.Time
 	TempDir           string
+	// Differential 为 true 时执行差异备份：仅打包自 BaseManifest 以来新增/变更的条目，
+	// 并记录被删除的路径。仅文件类型任务支持；BaseManifest 为空时回退为全量。
+	Differential bool
+	BaseManifest Manifest
+	// SelectedPaths 非空时仅恢复这些归档相对路径（及其子项），用于按需（选择性）恢复；仅文件类型生效。
+	SelectedPaths []string
 }

 type RunResult struct {
@@ -44,6 +50,8 @@ type RunResult struct {
 	TempDir      string
 	Size         int64
 	StorageKey   string
+	// Manifest 为全量备份产出的条目清单，供后续差异备份比对；差异备份运行时为 nil。
+	Manifest *Manifest
 }

 type LogEvent struct {
@@ -62,7 +70,7 @@ type ProgressInfo struct {
 	BytesSent  int64   `json:"bytesSent"`
 	TotalBytes int64   `json:"totalBytes"`
 	Percent    float64 `json:"percent"`
-	SpeedBps   float64 `json:"speedBps"`   // bytes/sec
+	SpeedBps   float64 `json:"speedBps"` // bytes/sec
 	TargetName string  `json:"targetName"`
 }

--- a/server/internal/backup/verify.go
+++ b/server/internal/backup/verify.go
@@ -0,0 +1,179 @@
+package backup
+
+import (
+	"archive/tar"
+	"bufio"
+	"crypto/sha256"
+	"encoding/hex"
+	"fmt"
+	"io"
+	"os"
+	"strings"
+)
+
+// VerifyReport 是 quick 模式的验证结果摘要。
+type VerifyReport struct {
+	TotalEntries int    `json:"totalEntries,omitempty"`
+	FileBytes    int64  `json:"fileBytes,omitempty"`
+	ChecksumOK   bool   `json:"checksumOk,omitempty"`
+	Detail       string `json:"detail,omitempty"`
+}
+
+// VerifyTarArchive 遍历 tar 归档的每个 header + reader，不写盘。
+// 能检测归档截断、条目损坏、层级不对等常见问题。
+// expectedChecksum 非空时额外对整个文件校验 SHA-256（不做解压）。
+func VerifyTarArchive(artifactPath string, expectedChecksum string) (*VerifyReport, error) {
+	file, err := os.Open(artifactPath)
+	if err != nil {
+		return nil, fmt.Errorf("open tar artifact: %w", err)
+	}
+	defer file.Close()
+	report := &VerifyReport{}
+	h := sha256.New()
+	reader := io.TeeReader(file, h)
+	tr := tar.NewReader(reader)
+	for {
+		header, err := tr.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return report, fmt.Errorf("read tar entry: %w", err)
+		}
+		report.TotalEntries++
+		// 读完条目数据以触发完整性校验（tar 内部 CRC 不严格，但断流会报错）
+		if header.Typeflag == tar.TypeReg || header.Typeflag == tar.TypeRegA {
+			n, copyErr := io.Copy(io.Discard, tr)
+			if copyErr != nil {
+				return report, fmt.Errorf("read entry %s: %w", header.Name, copyErr)
+			}
+			report.FileBytes += n
+		}
+	}
+	// 读完 tar 后继续把剩余字节喂给 hash（tar 结束后可能有零填充尾）
+	if _, err := io.Copy(io.Discard, reader); err != nil {
+		return report, fmt.Errorf("drain remainder: %w", err)
+	}
+	actual := hex.EncodeToString(h.Sum(nil))
+	if strings.TrimSpace(expectedChecksum) != "" {
+		report.ChecksumOK = strings.EqualFold(actual, expectedChecksum)
+		if !report.ChecksumOK {
+			return report, fmt.Errorf("checksum mismatch: expected %s, got %s", expectedChecksum, actual)
+		}
+	} else {
+		report.ChecksumOK = true
+	}
+	report.Detail = fmt.Sprintf("tar 包完整（%d 条目，有效字节 %d）", report.TotalEntries, report.FileBytes)
+	return report, nil
+}
+
+// VerifySQLiteFile 校验 SQLite 文件头魔数。
+// 官方格式：前 16 字节为 "SQLite format 3\000"。
+func VerifySQLiteFile(artifactPath string) (*VerifyReport, error) {
+	file, err := os.Open(artifactPath)
+	if err != nil {
+		return nil, fmt.Errorf("open sqlite artifact: %w", err)
+	}
+	defer file.Close()
+	header := make([]byte, 16)
+	if _, err := io.ReadFull(file, header); err != nil {
+		return nil, fmt.Errorf("read sqlite header: %w", err)
+	}
+	const magic = "SQLite format 3\x00"
+	if string(header) != magic {
+		return &VerifyReport{Detail: "非法的 SQLite 文件头"}, fmt.Errorf("invalid sqlite magic header")
+	}
+	info, _ := file.Stat()
+	var size int64
+	if info != nil {
+		size = info.Size()
+	}
+	return &VerifyReport{
+		FileBytes: size,
+		Detail:    fmt.Sprintf("SQLite 文件头合法（总大小 %d 字节）", size),
+	}, nil
+}
+
+// VerifyMySQLDump 校验 MySQL dump 文件头部是否为合法 mysqldump 输出。
+// 头部 1024 字节包含以下任一关键字即通过：
+//   - "-- MySQL dump"
+//   - "-- Server version"
+//   - "-- MariaDB dump"
+func VerifyMySQLDump(artifactPath string) (*VerifyReport, error) {
+	return verifyDumpHeader(artifactPath, []string{"-- MySQL dump", "-- Server version", "-- MariaDB dump"}, "MySQL/MariaDB")
+}
+
+// VerifyPostgreSQLDump 校验 PostgreSQL plain text dump 头部。
+// 典型标记："-- PostgreSQL database dump" 或 "-- Dumped from database version"。
+func VerifyPostgreSQLDump(artifactPath string) (*VerifyReport, error) {
+	return verifyDumpHeader(artifactPath, []string{"-- PostgreSQL database dump", "-- Dumped from database version", "SET statement_timeout"}, "PostgreSQL")
+}
+
+func verifyDumpHeader(artifactPath string, markers []string, label string) (*VerifyReport, error) {
+	file, err := os.Open(artifactPath)
+	if err != nil {
+		return nil, fmt.Errorf("open dump artifact: %w", err)
+	}
+	defer file.Close()
+	reader := bufio.NewReader(file)
+	buf := make([]byte, 4096)
+	n, _ := io.ReadFull(reader, buf)
+	sample := string(buf[:n])
+	matched := ""
+	for _, m := range markers {
+		if strings.Contains(sample, m) {
+			matched = m
+			break
+		}
+	}
+	if matched == "" {
+		return &VerifyReport{Detail: fmt.Sprintf("未在前 %d 字节中发现 %s dump 特征", n, label)}, fmt.Errorf("no %s dump marker in header", label)
+	}
+	info, _ := file.Stat()
+	var size int64
+	if info != nil {
+		size = info.Size()
+	}
+	return &VerifyReport{
+		FileBytes: size,
+		Detail:    fmt.Sprintf("%s dump 头部识别标志: %q（文件 %d 字节）", label, matched, size),
+	}, nil
+}
+
+// VerifySAPHANAArchive 校验 SAP HANA 归档 tar 中是否包含 databackup/logbackup 标志文件。
+func VerifySAPHANAArchive(artifactPath string) (*VerifyReport, error) {
+	file, err := os.Open(artifactPath)
+	if err != nil {
+		return nil, fmt.Errorf("open hana archive: %w", err)
+	}
+	defer file.Close()
+	tr := tar.NewReader(file)
+	report := &VerifyReport{}
+	var foundDataBackup bool
+	for {
+		header, err := tr.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return report, fmt.Errorf("read tar entry: %w", err)
+		}
+		report.TotalEntries++
+		name := strings.ToLower(header.Name)
+		if strings.Contains(name, "databackup") || strings.Contains(name, "logbackup") || strings.HasPrefix(name, "hana_") {
+			foundDataBackup = true
+		}
+		if header.Typeflag == tar.TypeReg || header.Typeflag == tar.TypeRegA {
+			n, copyErr := io.Copy(io.Discard, tr)
+			if copyErr != nil {
+				return report, fmt.Errorf("read entry %s: %w", header.Name, copyErr)
+			}
+			report.FileBytes += n
+		}
+	}
+	if !foundDataBackup {
+		return report, fmt.Errorf("HANA archive missing databackup/logbackup markers")
+	}
+	report.Detail = fmt.Sprintf("HANA 归档包含 %d 条目（%d 字节），已识别备份标志文件", report.TotalEntries, report.FileBytes)
+	return report, nil
+}
--- a/server/internal/backup/verify_test.go
+++ b/server/internal/backup/verify_test.go
@@ -0,0 +1,121 @@
+package backup
+
+import (
+	"archive/tar"
+	"bytes"
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+// 构造一个最小的 tar 归档文件供测试使用
+func writeTestTar(t *testing.T, entries map[string][]byte) string {
+	t.Helper()
+	path := filepath.Join(t.TempDir(), "test.tar")
+	buf := new(bytes.Buffer)
+	tw := tar.NewWriter(buf)
+	for name, body := range entries {
+		header := &tar.Header{Name: name, Mode: 0o644, Size: int64(len(body)), Typeflag: tar.TypeReg}
+		if err := tw.WriteHeader(header); err != nil {
+			t.Fatalf("write tar header: %v", err)
+		}
+		if _, err := tw.Write(body); err != nil {
+			t.Fatalf("write tar body: %v", err)
+		}
+	}
+	_ = tw.Close()
+	if err := os.WriteFile(path, buf.Bytes(), 0o644); err != nil {
+		t.Fatalf("write tar file: %v", err)
+	}
+	return path
+}
+
+func TestVerifyTarArchive_Valid(t *testing.T) {
+	path := writeTestTar(t, map[string][]byte{
+		"readme.md":  []byte("hello"),
+		"data.bin":   []byte("world!!!"),
+	})
+	report, err := VerifyTarArchive(path, "")
+	if err != nil {
+		t.Fatalf("VerifyTarArchive returned error: %v", err)
+	}
+	if report.TotalEntries != 2 {
+		t.Fatalf("expected 2 entries, got %d", report.TotalEntries)
+	}
+	if report.FileBytes == 0 {
+		t.Fatalf("expected non-zero file bytes")
+	}
+	if !report.ChecksumOK {
+		t.Fatalf("checksumOK should be true when expected checksum empty")
+	}
+}
+
+func TestVerifyTarArchive_Truncated(t *testing.T) {
+	// 构造带多个大 entry 的 tar，在 entry 数据中间截断，使 io.Copy 触发 UnexpectedEOF
+	path := filepath.Join(t.TempDir(), "big.tar")
+	buf := new(bytes.Buffer)
+	tw := tar.NewWriter(buf)
+	body := bytes.Repeat([]byte("x"), 4096)
+	_ = tw.WriteHeader(&tar.Header{Name: "big.bin", Mode: 0o644, Size: int64(len(body)), Typeflag: tar.TypeReg})
+	_, _ = tw.Write(body)
+	_ = tw.Close()
+	data := buf.Bytes()
+	// 保留 header 完整（512），破坏 body 中间使 tar.Reader 在 io.Copy 时遇到 EOF
+	truncated := data[:512+1024]
+	if err := os.WriteFile(path, truncated, 0o644); err != nil {
+		t.Fatalf("write truncated: %v", err)
+	}
+	if _, err := VerifyTarArchive(path, ""); err == nil {
+		t.Fatalf("expected error on truncated tar, got nil")
+	}
+}
+
+func TestVerifySQLiteFile_Valid(t *testing.T) {
+	path := filepath.Join(t.TempDir(), "ok.db")
+	content := []byte("SQLite format 3\x00" + string(make([]byte, 100)))
+	if err := os.WriteFile(path, content, 0o644); err != nil {
+		t.Fatalf("WriteFile: %v", err)
+	}
+	report, err := VerifySQLiteFile(path)
+	if err != nil {
+		t.Fatalf("VerifySQLiteFile: %v", err)
+	}
+	if report.FileBytes == 0 {
+		t.Fatalf("expected non-zero size")
+	}
+}
+
+func TestVerifySQLiteFile_Invalid(t *testing.T) {
+	path := filepath.Join(t.TempDir(), "bad.db")
+	if err := os.WriteFile(path, []byte("not sqlite at all, some other text"), 0o644); err != nil {
+		t.Fatalf("WriteFile: %v", err)
+	}
+	if _, err := VerifySQLiteFile(path); err == nil {
+		t.Fatalf("expected error on non-sqlite file")
+	}
+}
+
+func TestVerifyMySQLDump(t *testing.T) {
+	path := filepath.Join(t.TempDir(), "dump.sql")
+	content := "-- MySQL dump 10.13  Distrib 8.0.33\n-- Host: localhost\nINSERT INTO foo VALUES (1);\n"
+	if err := os.WriteFile(path, []byte(content), 0o644); err != nil {
+		t.Fatalf("WriteFile: %v", err)
+	}
+	report, err := VerifyMySQLDump(path)
+	if err != nil {
+		t.Fatalf("VerifyMySQLDump: %v", err)
+	}
+	if report.Detail == "" {
+		t.Fatalf("expected Detail in report")
+	}
+}
+
+func TestVerifyPostgreSQLDump_Invalid(t *testing.T) {
+	path := filepath.Join(t.TempDir(), "notpg.sql")
+	if err := os.WriteFile(path, []byte("some random text without header markers"), 0o644); err != nil {
+		t.Fatalf("WriteFile: %v", err)
+	}
+	if _, err := VerifyPostgreSQLDump(path); err == nil {
+		t.Fatalf("expected error on non-pg dump")
+	}
+}
--- a/server/internal/backup/window.go
+++ b/server/internal/backup/window.go
@@ -0,0 +1,180 @@
+package backup
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// MaintenanceWindow 描述一个允许执行备份的时段。
+// 格式语义：
+//   - Days 为 "0..6" 的字符串集合（0=周日，6=周六）；空 = 每天
+//   - StartMinutes / EndMinutes 为"午夜起计算的分钟数"，0 ≤ v < 1440
+//   - 跨午夜窗口：Start > End 表示跨夜（如 22:00-06:00）
+//
+// 多个窗口是 OR 语义：只要 now 落入任一窗口即允许执行。
+type MaintenanceWindow struct {
+	Days         map[int]bool
+	StartMinutes int
+	EndMinutes   int
+}
+
+// ParseMaintenanceWindows 解析用户配置（CSV 每项形如 "days=mon,tue|time=22:00-06:00"）。
+// 简化语法：多个窗口以 ';' 分隔，每个窗口按 "[days=xxx;]time=HH:MM-HH:MM" 格式。
+// Days 缺省 = 全周；若不合法，跳过该段而非抛错（让调用方尽力工作）。
+// 示例：
+//   "time=01:00-05:00"                        每天 1 点到 5 点
+//   "days=sat,sun;time=00:00-23:59"           仅周末全天
+//   "time=22:00-06:00"                        每天跨夜
+//   "days=mon,tue,wed,thu,fri;time=22:00-06:00" 工作日跨夜
+func ParseMaintenanceWindows(value string) []MaintenanceWindow {
+	v := strings.TrimSpace(value)
+	if v == "" {
+		return nil
+	}
+	segments := strings.Split(v, ";")
+	var windows []MaintenanceWindow
+	for _, segment := range segments {
+		segment = strings.TrimSpace(segment)
+		if segment == "" {
+			continue
+		}
+		window, ok := parseSingleWindow(segment)
+		if !ok {
+			continue
+		}
+		windows = append(windows, window)
+	}
+	return windows
+}
+
+func parseSingleWindow(segment string) (MaintenanceWindow, bool) {
+	// "days=xxx,time=HH:MM-HH:MM" 或 "time=..."
+	fields := strings.Split(segment, ",")
+	days := map[int]bool{}
+	var timeExpr string
+	for _, field := range fields {
+		field = strings.TrimSpace(field)
+		if field == "" {
+			continue
+		}
+		if strings.HasPrefix(field, "days=") {
+			daysPart := strings.TrimPrefix(field, "days=")
+			for _, day := range strings.Split(daysPart, "|") {
+				if idx := parseDayToken(strings.TrimSpace(day)); idx >= 0 {
+					days[idx] = true
+				}
+			}
+		} else if strings.HasPrefix(field, "time=") {
+			timeExpr = strings.TrimPrefix(field, "time=")
+		}
+	}
+	start, end, ok := parseTimeRange(strings.TrimSpace(timeExpr))
+	if !ok {
+		return MaintenanceWindow{}, false
+	}
+	return MaintenanceWindow{Days: days, StartMinutes: start, EndMinutes: end}, true
+}
+
+var dayTokens = map[string]int{
+	"sun": 0, "sunday": 0, "0": 0,
+	"mon": 1, "monday": 1, "1": 1,
+	"tue": 2, "tuesday": 2, "2": 2,
+	"wed": 3, "wednesday": 3, "3": 3,
+	"thu": 4, "thursday": 4, "4": 4,
+	"fri": 5, "friday": 5, "5": 5,
+	"sat": 6, "saturday": 6, "6": 6,
+}
+
+func parseDayToken(value string) int {
+	v := strings.ToLower(strings.TrimSpace(value))
+	if v == "" {
+		return -1
+	}
+	if idx, ok := dayTokens[v]; ok {
+		return idx
+	}
+	return -1
+}
+
+// parseTimeRange 解析 "HH:MM-HH:MM"，返回起止分钟数。
+func parseTimeRange(value string) (int, int, bool) {
+	parts := strings.SplitN(value, "-", 2)
+	if len(parts) != 2 {
+		return 0, 0, false
+	}
+	start, ok := parseHHMM(parts[0])
+	if !ok {
+		return 0, 0, false
+	}
+	end, ok := parseHHMM(parts[1])
+	if !ok {
+		return 0, 0, false
+	}
+	return start, end, true
+}
+
+func parseHHMM(value string) (int, bool) {
+	parts := strings.Split(strings.TrimSpace(value), ":")
+	if len(parts) != 2 {
+		return 0, false
+	}
+	h, err := strconv.Atoi(strings.TrimSpace(parts[0]))
+	if err != nil || h < 0 || h > 23 {
+		return 0, false
+	}
+	m, err := strconv.Atoi(strings.TrimSpace(parts[1]))
+	if err != nil || m < 0 || m > 59 {
+		return 0, false
+	}
+	return h*60 + m, true
+}
+
+// IsWithinWindow 判断 t 是否落入任一窗口。windows 为空或 nil 时总是返回 true（不限制）。
+func IsWithinWindow(t time.Time, windows []MaintenanceWindow) bool {
+	if len(windows) == 0 {
+		return true
+	}
+	minutes := t.Hour()*60 + t.Minute()
+	weekday := int(t.Weekday())
+	for _, w := range windows {
+		if len(w.Days) > 0 && !w.Days[weekday] {
+			continue
+		}
+		if w.StartMinutes == w.EndMinutes {
+			continue
+		}
+		if w.StartMinutes < w.EndMinutes {
+			// 同日窗口
+			if minutes >= w.StartMinutes && minutes < w.EndMinutes {
+				return true
+			}
+		} else {
+			// 跨午夜：[start, 1440) ∪ [0, end)
+			if minutes >= w.StartMinutes || minutes < w.EndMinutes {
+				return true
+			}
+		}
+	}
+	return false
+}
+
+// ValidateMaintenanceWindows 用户输入合法性校验（返回人可读的错误）。
+func ValidateMaintenanceWindows(value string) error {
+	v := strings.TrimSpace(value)
+	if v == "" {
+		return nil
+	}
+	segments := strings.Split(v, ";")
+	for _, segment := range segments {
+		segment = strings.TrimSpace(segment)
+		if segment == "" {
+			continue
+		}
+		if _, ok := parseSingleWindow(segment); !ok {
+			return fmt.Errorf("无效的维护窗口配置: %q（期望格式如 time=22:00-06:00 或 days=sat,sun,time=00:00-23:59）", segment)
+		}
+	}
+	return nil
+}
--- a/server/internal/backup/window_test.go
+++ b/server/internal/backup/window_test.go
@@ -0,0 +1,110 @@
+package backup
+
+import (
+	"testing"
+	"time"
+)
+
+func TestParseAndCheck_SingleSameDayWindow(t *testing.T) {
+	windows := ParseMaintenanceWindows("time=01:00-05:00")
+	if len(windows) != 1 {
+		t.Fatalf("expected 1 window, got %d", len(windows))
+	}
+	// 周一 03:00 UTC（天数不限制）
+	at := time.Date(2026, 4, 20, 3, 0, 0, 0, time.UTC)
+	if !IsWithinWindow(at, windows) {
+		t.Fatalf("expected 03:00 to be inside 01:00-05:00")
+	}
+	at = time.Date(2026, 4, 20, 6, 0, 0, 0, time.UTC)
+	if IsWithinWindow(at, windows) {
+		t.Fatalf("expected 06:00 to be outside 01:00-05:00")
+	}
+}
+
+func TestParseAndCheck_CrossMidnight(t *testing.T) {
+	windows := ParseMaintenanceWindows("time=22:00-06:00")
+	if len(windows) != 1 {
+		t.Fatalf("expected 1 window")
+	}
+	tests := []struct {
+		hour, minute int
+		inside       bool
+	}{
+		{22, 30, true},
+		{23, 59, true},
+		{0, 0, true},
+		{3, 0, true},
+		{5, 59, true},
+		{6, 0, false},
+		{7, 0, false},
+		{21, 59, false},
+	}
+	base := time.Date(2026, 4, 20, 0, 0, 0, 0, time.UTC)
+	for _, tc := range tests {
+		at := base.Add(time.Duration(tc.hour)*time.Hour + time.Duration(tc.minute)*time.Minute)
+		if got := IsWithinWindow(at, windows); got != tc.inside {
+			t.Errorf("%02d:%02d expected inside=%v, got %v", tc.hour, tc.minute, tc.inside, got)
+		}
+	}
+}
+
+func TestParseAndCheck_DaysFilter(t *testing.T) {
+	// 周末全天
+	windows := ParseMaintenanceWindows("days=sat|sun,time=00:00-23:59")
+	if len(windows) != 1 {
+		t.Fatalf("expected 1 window")
+	}
+	sat := time.Date(2026, 4, 18, 12, 0, 0, 0, time.UTC) // Saturday
+	sun := time.Date(2026, 4, 19, 12, 0, 0, 0, time.UTC) // Sunday
+	mon := time.Date(2026, 4, 20, 12, 0, 0, 0, time.UTC) // Monday
+	if !IsWithinWindow(sat, windows) {
+		t.Fatalf("saturday should be inside")
+	}
+	if !IsWithinWindow(sun, windows) {
+		t.Fatalf("sunday should be inside")
+	}
+	if IsWithinWindow(mon, windows) {
+		t.Fatalf("monday should be outside")
+	}
+}
+
+func TestParseAndCheck_Multiple(t *testing.T) {
+	// 两段：工作日跨夜 + 周末全天
+	windows := ParseMaintenanceWindows("days=mon|tue|wed|thu|fri,time=22:00-06:00;days=sat|sun,time=00:00-23:59")
+	if len(windows) != 2 {
+		t.Fatalf("expected 2 windows, got %d", len(windows))
+	}
+	monAfternoon := time.Date(2026, 4, 20, 15, 0, 0, 0, time.UTC)
+	if IsWithinWindow(monAfternoon, windows) {
+		t.Fatalf("mon 15:00 should be outside both windows")
+	}
+	monNight := time.Date(2026, 4, 20, 23, 0, 0, 0, time.UTC)
+	if !IsWithinWindow(monNight, windows) {
+		t.Fatalf("mon 23:00 should be inside weekday-night window")
+	}
+	sunNoon := time.Date(2026, 4, 19, 12, 0, 0, 0, time.UTC)
+	if !IsWithinWindow(sunNoon, windows) {
+		t.Fatalf("sun 12:00 should be inside weekend window")
+	}
+}
+
+func TestValidateMaintenanceWindows(t *testing.T) {
+	if err := ValidateMaintenanceWindows(""); err != nil {
+		t.Fatalf("empty should be valid, got %v", err)
+	}
+	if err := ValidateMaintenanceWindows("time=01:00-05:00"); err != nil {
+		t.Fatalf("valid format rejected: %v", err)
+	}
+	if err := ValidateMaintenanceWindows("bad-input"); err == nil {
+		t.Fatalf("invalid format should return error")
+	}
+	if err := ValidateMaintenanceWindows("time=25:00-30:00"); err == nil {
+		t.Fatalf("invalid hour should return error")
+	}
+}
+
+func TestIsWithinWindow_NoWindows(t *testing.T) {
+	if !IsWithinWindow(time.Now(), nil) {
+		t.Fatalf("no windows should always be inside")
+	}
+}
--- a/server/internal/config/config.go
+++ b/server/internal/config/config.go
@@ -17,9 +17,14 @@ type Config struct {
 }

 type ServerConfig struct {
-	Host string `mapstructure:"host"`
-	Port int    `mapstructure:"port"`
-	Mode string `mapstructure:"mode"`
+	Host        string `mapstructure:"host"`
+	Port        int    `mapstructure:"port"`
+	Mode        string `mapstructure:"mode"`
+	ExternalURL string `mapstructure:"external_url"`
+	// WebRoot 指向前端构建产物目录。留空时后端会按部署惯例自动探测
+	// （./web、./web/dist、/opt/backupx/web 等）。探测命中后后端直接托管
+	// 前端 SPA，无需额外的 nginx 反向代理即可访问 Web 控制台。
+	WebRoot string `mapstructure:"web_root"`
 }

 type DatabaseConfig struct {
@@ -136,6 +141,8 @@ func applyDefaults(v *viper.Viper) {
 	v.SetDefault("server.host", "0.0.0.0")
 	v.SetDefault("server.port", 8340)
 	v.SetDefault("server.mode", "release")
+	v.SetDefault("server.external_url", "")
+	v.SetDefault("server.web_root", "")
 	v.SetDefault("database.path", "./data/backupx.db")
 	v.SetDefault("security.jwt_expire", "24h")
 	v.SetDefault("backup.temp_dir", "/tmp/backupx")
--- a/server/internal/config/config_test.go
+++ b/server/internal/config/config_test.go
@@ -1,6 +1,10 @@
 package config

-import "testing"
+import (
+	"os"
+	"path/filepath"
+	"testing"
+)

 func TestLoadUsesDefaultsWithoutConfigFile(t *testing.T) {
 	cfg, err := Load("")
@@ -18,3 +22,33 @@ func TestLoadUsesDefaultsWithoutConfigFile(t *testing.T) {
 		t.Fatalf("expected default database path, got %s", cfg.Database.Path)
 	}
 }
+
+func TestLoadReadsServerExternalURLFromFile(t *testing.T) {
+	configPath := filepath.Join(t.TempDir(), "config.yaml")
+	content := []byte("server:\n  external_url: \"https://backup.example.com\"\n")
+	if err := os.WriteFile(configPath, content, 0o600); err != nil {
+		t.Fatalf("write config: %v", err)
+	}
+
+	cfg, err := Load(configPath)
+	if err != nil {
+		t.Fatalf("Load returned error: %v", err)
+	}
+
+	if cfg.Server.ExternalURL != "https://backup.example.com" {
+		t.Fatalf("expected external URL from config, got %q", cfg.Server.ExternalURL)
+	}
+}
+
+func TestLoadReadsServerExternalURLFromEnv(t *testing.T) {
+	t.Setenv("BACKUPX_SERVER_EXTERNAL_URL", "https://env-backup.example.com")
+
+	cfg, err := Load("")
+	if err != nil {
+		t.Fatalf("Load returned error: %v", err)
+	}
+
+	if cfg.Server.ExternalURL != "https://env-backup.example.com" {
+		t.Fatalf("expected external URL from env, got %q", cfg.Server.ExternalURL)
+	}
+}
--- a/server/internal/database/database.go
+++ b/server/internal/database/database.go
@@ -23,7 +23,7 @@ func Open(cfg config.DatabaseConfig, logger *zap.Logger) (*gorm.DB, error) {
 		return nil, fmt.Errorf("open sqlite: %w", err)
 	}

-	if err := db.AutoMigrate(&model.User{}, &model.SystemConfig{}, &model.StorageTarget{}, &model.OAuthSession{}, &model.BackupTask{}, &model.BackupRecord{}, &model.Notification{}, &model.Node{}, &model.BackupTaskStorageTarget{}, &model.AuditLog{}, &model.AgentCommand{}); err != nil {
+	if err := db.AutoMigrate(&model.User{}, &model.SystemConfig{}, &model.StorageTarget{}, &model.OAuthSession{}, &model.BackupTask{}, &model.BackupRecord{}, &model.Notification{}, &model.Node{}, &model.BackupTaskStorageTarget{}, &model.AuditLog{}, &model.AgentCommand{}, &model.AgentInstallToken{}, &model.RestoreRecord{}, &model.VerificationRecord{}, &model.ApiKey{}, &model.ReplicationRecord{}, &model.TaskTemplate{}); err != nil {
 		return nil, fmt.Errorf("migrate schema: %w", err)
 	}

--- a/server/internal/http/agent_handler.go
+++ b/server/internal/http/agent_handler.go
@@ -14,12 +14,13 @@ import (
 // AgentHandler 实现 Agent 调用 Master 的 HTTP API。
 // 全部端点通过 X-Agent-Token 头做节点认证，不使用 JWT。
 type AgentHandler struct {
-	agentService *service.AgentService
-	nodeService  *service.NodeService
+	agentService   *service.AgentService
+	nodeService    *service.NodeService
+	restoreService *service.RestoreService
 }

-func NewAgentHandler(agentService *service.AgentService, nodeService *service.NodeService) *AgentHandler {
-	return &AgentHandler{agentService: agentService, nodeService: nodeService}
+func NewAgentHandler(agentService *service.AgentService, nodeService *service.NodeService, restoreService *service.RestoreService) *AgentHandler {
+	return &AgentHandler{agentService: agentService, nodeService: nodeService, restoreService: restoreService}
 }

 // extractToken 从请求头或 JSON body 中提取 Agent Token。
@@ -154,3 +155,70 @@ func (h *AgentHandler) UpdateRecord(c *gin.Context) {
 	}
 	response.Success(c, gin.H{"status": "ok"})
 }
+
+// GetRestoreSpec Agent 拉取恢复规格。
+func (h *AgentHandler) GetRestoreSpec(c *gin.Context) {
+	if h.restoreService == nil {
+		c.JSON(stdhttp.StatusServiceUnavailable, gin.H{"code": "RESTORE_SERVICE_DISABLED", "message": "restore service is not enabled"})
+		return
+	}
+	node, err := h.agentService.AuthenticatedNode(c.Request.Context(), extractToken(c))
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	id, err := strconv.ParseUint(c.Param("id"), 10, 32)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	spec, err := h.restoreService.GetAgentRestoreSpec(c.Request.Context(), node, uint(id))
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, spec)
+}
+
+// UpdateRestore Agent 上报恢复记录的状态/日志。
+func (h *AgentHandler) UpdateRestore(c *gin.Context) {
+	if h.restoreService == nil {
+		c.JSON(stdhttp.StatusServiceUnavailable, gin.H{"code": "RESTORE_SERVICE_DISABLED", "message": "restore service is not enabled"})
+		return
+	}
+	node, err := h.agentService.AuthenticatedNode(c.Request.Context(), extractToken(c))
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	id, err := strconv.ParseUint(c.Param("id"), 10, 32)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	var input service.AgentRestoreUpdate
+	if err := c.ShouldBindJSON(&input); err != nil {
+		c.JSON(stdhttp.StatusBadRequest, gin.H{"code": "INVALID_INPUT", "message": err.Error()})
+		return
+	}
+	if err := h.restoreService.UpdateAgentRestore(c.Request.Context(), node, uint(id), input); err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, gin.H{"status": "ok"})
+}
+
+// Self 返回当前 Agent token 所属节点的状态，供安装脚本末尾探活。
+func (h *AgentHandler) Self(c *gin.Context) {
+	node, err := h.agentService.AuthenticatedNode(c.Request.Context(), extractToken(c))
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	status, err := h.agentService.SelfStatus(c.Request.Context(), node)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, status)
+}
--- a/server/internal/http/api_key_handler.go
+++ b/server/internal/http/api_key_handler.go
@@ -0,0 +1,93 @@
+package http
+
+import (
+	"fmt"
+
+	"backupx/server/internal/apperror"
+	"backupx/server/internal/service"
+	"backupx/server/pkg/response"
+
+	"github.com/gin-gonic/gin"
+)
+
+// ApiKeyHandler 管理 API Key（admin 专属）。
+type ApiKeyHandler struct {
+	service      *service.ApiKeyService
+	auditService *service.AuditService
+}
+
+func NewApiKeyHandler(apiKeyService *service.ApiKeyService, auditService *service.AuditService) *ApiKeyHandler {
+	return &ApiKeyHandler{service: apiKeyService, auditService: auditService}
+}
+
+func (h *ApiKeyHandler) List(c *gin.Context) {
+	items, err := h.service.List(c.Request.Context())
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, items)
+}
+
+func (h *ApiKeyHandler) Create(c *gin.Context) {
+	var input service.ApiKeyCreateInput
+	if err := c.ShouldBindJSON(&input); err != nil {
+		response.Error(c, apperror.BadRequest("API_KEY_INVALID", "API Key 参数不合法", err))
+		return
+	}
+	creator := ""
+	if username, exists := c.Get(contextUsernameKey); exists {
+		if v, ok := username.(string); ok {
+			creator = v
+		}
+	}
+	result, err := h.service.Create(c.Request.Context(), creator, input)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	recordAudit(c, h.auditService, "api_key", "create", "api_key", fmt.Sprintf("%d", result.ApiKey.ID), result.ApiKey.Name,
+		fmt.Sprintf("创建 API Key: %s (角色: %s)", result.ApiKey.Name, result.ApiKey.Role))
+	response.Success(c, result)
+}
+
+func (h *ApiKeyHandler) Revoke(c *gin.Context) {
+	id, ok := parseUintParam(c, "id")
+	if !ok {
+		return
+	}
+	if err := h.service.Revoke(c.Request.Context(), id); err != nil {
+		response.Error(c, err)
+		return
+	}
+	recordAudit(c, h.auditService, "api_key", "revoke", "api_key", fmt.Sprintf("%d", id), "",
+		fmt.Sprintf("撤销 API Key (ID: %d)", id))
+	response.Success(c, gin.H{"revoked": true})
+}
+
+func (h *ApiKeyHandler) Toggle(c *gin.Context) {
+	id, ok := parseUintParam(c, "id")
+	if !ok {
+		return
+	}
+	var input struct {
+		Disabled bool `json:"disabled"`
+	}
+	if err := c.ShouldBindJSON(&input); err != nil {
+		response.Error(c, apperror.BadRequest("API_KEY_INVALID", "参数不合法", err))
+		return
+	}
+	if err := h.service.ToggleDisabled(c.Request.Context(), id, input.Disabled); err != nil {
+		response.Error(c, err)
+		return
+	}
+	action := "enable"
+	label := "启用"
+	if input.Disabled {
+		action = "disable"
+		label = "停用"
+	}
+	recordAudit(c, h.auditService, "api_key", action, "api_key", fmt.Sprintf("%d", id), "",
+		fmt.Sprintf("%s API Key (ID: %d)", label, id))
+	response.Success(c, gin.H{"disabled": input.Disabled})
+}
--- a/server/internal/http/audit_handler.go
+++ b/server/internal/http/audit_handler.go
@@ -1,11 +1,18 @@
 package http

 import (
+	"encoding/csv"
+	"fmt"
+	stdhttp "net/http"
 	"strconv"
 	"strings"
+	"time"

+	"backupx/server/internal/apperror"
+	"backupx/server/internal/repository"
 	"backupx/server/internal/service"
 	"backupx/server/pkg/response"
+
 	"github.com/gin-gonic/gin"
 )

@@ -17,24 +24,97 @@ func NewAuditHandler(auditService *service.AuditService) *AuditHandler {
 	return &AuditHandler{auditService: auditService}
 }

+// List 多字段筛选分页查询审计日志。
+// 支持参数：category, action, username, targetId, keyword, dateFrom, dateTo, limit, offset。
+// 向后兼容：若仅传 category + limit + offset，行为与旧版一致。
 func (h *AuditHandler) List(c *gin.Context) {
-	category := strings.TrimSpace(c.Query("category"))
-	limit := 50
-	offset := 0
-	if v := strings.TrimSpace(c.Query("limit")); v != "" {
-		if parsed, err := strconv.Atoi(v); err == nil && parsed > 0 {
-			limit = parsed
-		}
+	opts, err := parseAuditFilter(c)
+	if err != nil {
+		response.Error(c, err)
+		return
 	}
-	if v := strings.TrimSpace(c.Query("offset")); v != "" {
-		if parsed, err := strconv.Atoi(v); err == nil && parsed >= 0 {
-			offset = parsed
-		}
-	}
-	result, err := h.auditService.List(c.Request.Context(), category, limit, offset)
+	result, err := h.auditService.ListAdvanced(c.Request.Context(), opts)
 	if err != nil {
 		response.Error(c, err)
 		return
 	}
 	response.Success(c, result)
 }
+
+// Export 导出 CSV。同筛选参数，最多 10000 行。
+// 文件名带时间戳避免浏览器缓存覆盖。
+func (h *AuditHandler) Export(c *gin.Context) {
+	opts, err := parseAuditFilter(c)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	// 导出不分页：覆盖掉 List 的默认 limit
+	opts.Limit = 0
+	opts.Offset = 0
+	items, err := h.auditService.ExportAll(c.Request.Context(), opts)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	filename := fmt.Sprintf("backupx-audit-%s.csv", time.Now().UTC().Format("20060102-150405"))
+	c.Header("Content-Type", "text/csv; charset=utf-8")
+	c.Header("Content-Disposition", fmt.Sprintf("attachment; filename=%q", filename))
+	// UTF-8 BOM 让 Excel 正确识别中文
+	_, _ = c.Writer.Write([]byte{0xEF, 0xBB, 0xBF})
+	writer := csv.NewWriter(c.Writer)
+	_ = writer.Write([]string{"时间", "用户", "类别", "动作", "目标类型", "目标 ID", "目标名", "详情", "客户端 IP"})
+	for _, item := range items {
+		_ = writer.Write([]string{
+			item.CreatedAt.UTC().Format(time.RFC3339),
+			item.Username,
+			item.Category,
+			item.Action,
+			item.TargetType,
+			item.TargetID,
+			item.TargetName,
+			item.Detail,
+			item.ClientIP,
+		})
+	}
+	writer.Flush()
+	if err := writer.Error(); err != nil {
+		c.Writer.WriteHeader(stdhttp.StatusInternalServerError)
+	}
+}
+
+// parseAuditFilter 解析查询参数为 repository 选项。
+func parseAuditFilter(c *gin.Context) (repository.AuditLogListOptions, error) {
+	opts := repository.AuditLogListOptions{
+		Category: strings.TrimSpace(c.Query("category")),
+		Action:   strings.TrimSpace(c.Query("action")),
+		Username: strings.TrimSpace(c.Query("username")),
+		TargetID: strings.TrimSpace(c.Query("targetId")),
+		Keyword:  strings.TrimSpace(c.Query("keyword")),
+	}
+	if v := strings.TrimSpace(c.Query("limit")); v != "" {
+		if n, err := strconv.Atoi(v); err == nil && n > 0 {
+			opts.Limit = n
+		}
+	}
+	if v := strings.TrimSpace(c.Query("offset")); v != "" {
+		if n, err := strconv.Atoi(v); err == nil && n >= 0 {
+			opts.Offset = n
+		}
+	}
+	if v := strings.TrimSpace(c.Query("dateFrom")); v != "" {
+		parsed, err := time.Parse(time.RFC3339, v)
+		if err != nil {
+			return opts, apperror.BadRequest("AUDIT_FILTER_INVALID", "dateFrom 必须为 RFC3339 时间格式", err)
+		}
+		opts.DateFrom = &parsed
+	}
+	if v := strings.TrimSpace(c.Query("dateTo")); v != "" {
+		parsed, err := time.Parse(time.RFC3339, v)
+		if err != nil {
+			return opts, apperror.BadRequest("AUDIT_FILTER_INVALID", "dateTo 必须为 RFC3339 时间格式", err)
+		}
+		opts.DateTo = &parsed
+	}
+	return opts, nil
+}
--- a/server/internal/http/auth_handler.go
+++ b/server/internal/http/auth_handler.go
@@ -1,12 +1,23 @@
 package http

 import (
+	"net"
+	stdhttp "net/http"
+	"strings"
+	"time"
+
 	"backupx/server/internal/apperror"
 	"backupx/server/internal/service"
 	"backupx/server/pkg/response"
 	"github.com/gin-gonic/gin"
 )

+const (
+	trustedDeviceCookieName   = "backupx_trusted_device"
+	trustedDeviceCookiePath   = "/api/auth"
+	trustedDeviceCookieMaxAge = int((30 * 24 * time.Hour) / time.Second)
+)
+
 type AuthHandler struct {
 	authService *service.AuthService
 }
@@ -44,11 +55,18 @@ func (h *AuthHandler) Login(c *gin.Context) {
 		response.Error(c, apperror.BadRequest("AUTH_LOGIN_INVALID", "登录参数不合法", err))
 		return
 	}
+	if strings.TrimSpace(input.TrustedDeviceToken) == "" {
+		input.TrustedDeviceToken = trustedDeviceCookieValue(c)
+	}
 	payload, err := h.authService.Login(c.Request.Context(), input, ClientKey(c))
 	if err != nil {
 		response.Error(c, err)
 		return
 	}
+	if payload.TrustedDeviceToken != "" {
+		setTrustedDeviceCookie(c, payload.TrustedDeviceToken)
+		payload.TrustedDeviceToken = ""
+	}
 	response.Success(c, payload)
 }

@@ -83,9 +101,315 @@ func (h *AuthHandler) ChangePassword(c *gin.Context) {
 		response.Error(c, err)
 		return
 	}
+	clearTrustedDeviceCookie(c)
 	response.Success(c, gin.H{"changed": true})
 }

+func (h *AuthHandler) PrepareTwoFactor(c *gin.Context) {
+	subjectValue, _ := c.Get(contextUserSubjectKey)
+	subject, err := service.SubjectFromContextValue(subjectValue)
+	if err != nil {
+		response.Error(c, apperror.Unauthorized("AUTH_INVALID_SUBJECT", "无效登录态", err))
+		return
+	}
+	var input service.TwoFactorSetupInput
+	if err := c.ShouldBindJSON(&input); err != nil {
+		response.Error(c, apperror.BadRequest("AUTH_2FA_INVALID", "参数不合法", err))
+		return
+	}
+	payload, err := h.authService.PrepareTwoFactor(c.Request.Context(), subject, input)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, payload)
+}
+
+func (h *AuthHandler) EnableTwoFactor(c *gin.Context) {
+	subjectValue, _ := c.Get(contextUserSubjectKey)
+	subject, err := service.SubjectFromContextValue(subjectValue)
+	if err != nil {
+		response.Error(c, apperror.Unauthorized("AUTH_INVALID_SUBJECT", "无效登录态", err))
+		return
+	}
+	var input service.EnableTwoFactorInput
+	if err := c.ShouldBindJSON(&input); err != nil {
+		response.Error(c, apperror.BadRequest("AUTH_2FA_INVALID", "参数不合法", err))
+		return
+	}
+	user, err := h.authService.EnableTwoFactor(c.Request.Context(), subject, input)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, user)
+}
+
+func (h *AuthHandler) DisableTwoFactor(c *gin.Context) {
+	subjectValue, _ := c.Get(contextUserSubjectKey)
+	subject, err := service.SubjectFromContextValue(subjectValue)
+	if err != nil {
+		response.Error(c, apperror.Unauthorized("AUTH_INVALID_SUBJECT", "无效登录态", err))
+		return
+	}
+	var input service.DisableTwoFactorInput
+	if err := c.ShouldBindJSON(&input); err != nil {
+		response.Error(c, apperror.BadRequest("AUTH_2FA_INVALID", "参数不合法", err))
+		return
+	}
+	user, err := h.authService.DisableTwoFactor(c.Request.Context(), subject, input)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	if !user.MFAEnabled {
+		clearTrustedDeviceCookie(c)
+	}
+	response.Success(c, user)
+}
+
+func (h *AuthHandler) RegenerateRecoveryCodes(c *gin.Context) {
+	subjectValue, _ := c.Get(contextUserSubjectKey)
+	subject, err := service.SubjectFromContextValue(subjectValue)
+	if err != nil {
+		response.Error(c, apperror.Unauthorized("AUTH_INVALID_SUBJECT", "无效登录态", err))
+		return
+	}
+	var input service.RegenerateRecoveryCodesInput
+	if err := c.ShouldBindJSON(&input); err != nil {
+		response.Error(c, apperror.BadRequest("AUTH_2FA_INVALID", "参数不合法", err))
+		return
+	}
+	payload, err := h.authService.RegenerateRecoveryCodes(c.Request.Context(), subject, input)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, payload)
+}
+
+func (h *AuthHandler) ConfigureOTP(c *gin.Context) {
+	subjectValue, _ := c.Get(contextUserSubjectKey)
+	subject, err := service.SubjectFromContextValue(subjectValue)
+	if err != nil {
+		response.Error(c, apperror.Unauthorized("AUTH_INVALID_SUBJECT", "无效登录态", err))
+		return
+	}
+	var input service.OTPConfigInput
+	if err := c.ShouldBindJSON(&input); err != nil {
+		response.Error(c, apperror.BadRequest("AUTH_OTP_INVALID", "参数不合法", err))
+		return
+	}
+	user, err := h.authService.ConfigureOutOfBandOTP(c.Request.Context(), subject, input)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	if !user.MFAEnabled {
+		clearTrustedDeviceCookie(c)
+	}
+	response.Success(c, user)
+}
+
+func (h *AuthHandler) SendLoginOTP(c *gin.Context) {
+	var input service.LoginOTPInput
+	if err := c.ShouldBindJSON(&input); err != nil {
+		response.Error(c, apperror.BadRequest("AUTH_OTP_INVALID", "参数不合法", err))
+		return
+	}
+	if err := h.authService.SendLoginOTP(c.Request.Context(), input, ClientKey(c)); err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, gin.H{"sent": true})
+}
+
+func (h *AuthHandler) BeginWebAuthnRegistration(c *gin.Context) {
+	subjectValue, _ := c.Get(contextUserSubjectKey)
+	subject, err := service.SubjectFromContextValue(subjectValue)
+	if err != nil {
+		response.Error(c, apperror.Unauthorized("AUTH_INVALID_SUBJECT", "无效登录态", err))
+		return
+	}
+	var input service.WebAuthnRegistrationOptionsInput
+	if err := c.ShouldBindJSON(&input); err != nil {
+		response.Error(c, apperror.BadRequest("AUTH_WEBAUTHN_INVALID", "参数不合法", err))
+		return
+	}
+	options, err := h.authService.BeginWebAuthnRegistration(c.Request.Context(), subject, input, webAuthnRequestContext(c))
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, options)
+}
+
+func (h *AuthHandler) FinishWebAuthnRegistration(c *gin.Context) {
+	subjectValue, _ := c.Get(contextUserSubjectKey)
+	subject, err := service.SubjectFromContextValue(subjectValue)
+	if err != nil {
+		response.Error(c, apperror.Unauthorized("AUTH_INVALID_SUBJECT", "无效登录态", err))
+		return
+	}
+	var input service.WebAuthnRegistrationFinishInput
+	if err := c.ShouldBindJSON(&input); err != nil {
+		response.Error(c, apperror.BadRequest("AUTH_WEBAUTHN_INVALID", "参数不合法", err))
+		return
+	}
+	user, err := h.authService.FinishWebAuthnRegistration(c.Request.Context(), subject, input)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, user)
+}
+
+func (h *AuthHandler) BeginWebAuthnLogin(c *gin.Context) {
+	var input service.WebAuthnLoginOptionsInput
+	if err := c.ShouldBindJSON(&input); err != nil {
+		response.Error(c, apperror.BadRequest("AUTH_WEBAUTHN_INVALID", "参数不合法", err))
+		return
+	}
+	options, err := h.authService.BeginWebAuthnLogin(c.Request.Context(), input, webAuthnRequestContext(c), ClientKey(c))
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, options)
+}
+
+func (h *AuthHandler) ListWebAuthnCredentials(c *gin.Context) {
+	subjectValue, _ := c.Get(contextUserSubjectKey)
+	subject, err := service.SubjectFromContextValue(subjectValue)
+	if err != nil {
+		response.Error(c, apperror.Unauthorized("AUTH_INVALID_SUBJECT", "无效登录态", err))
+		return
+	}
+	items, err := h.authService.ListWebAuthnCredentials(c.Request.Context(), subject)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, items)
+}
+
+func (h *AuthHandler) DeleteWebAuthnCredential(c *gin.Context) {
+	subjectValue, _ := c.Get(contextUserSubjectKey)
+	subject, err := service.SubjectFromContextValue(subjectValue)
+	if err != nil {
+		response.Error(c, apperror.Unauthorized("AUTH_INVALID_SUBJECT", "无效登录态", err))
+		return
+	}
+	var input service.WebAuthnCredentialDeleteInput
+	if err := c.ShouldBindJSON(&input); err != nil {
+		response.Error(c, apperror.BadRequest("AUTH_WEBAUTHN_INVALID", "参数不合法", err))
+		return
+	}
+	user, err := h.authService.DeleteWebAuthnCredential(c.Request.Context(), subject, c.Param("id"), input)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	if !user.MFAEnabled {
+		clearTrustedDeviceCookie(c)
+	}
+	response.Success(c, user)
+}
+
+func (h *AuthHandler) ListTrustedDevices(c *gin.Context) {
+	subjectValue, _ := c.Get(contextUserSubjectKey)
+	subject, err := service.SubjectFromContextValue(subjectValue)
+	if err != nil {
+		response.Error(c, apperror.Unauthorized("AUTH_INVALID_SUBJECT", "无效登录态", err))
+		return
+	}
+	items, err := h.authService.ListTrustedDevices(c.Request.Context(), subject)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, items)
+}
+
+func (h *AuthHandler) RevokeTrustedDevice(c *gin.Context) {
+	subjectValue, _ := c.Get(contextUserSubjectKey)
+	subject, err := service.SubjectFromContextValue(subjectValue)
+	if err != nil {
+		response.Error(c, apperror.Unauthorized("AUTH_INVALID_SUBJECT", "无效登录态", err))
+		return
+	}
+	var input service.TrustedDeviceRevokeInput
+	if err := c.ShouldBindJSON(&input); err != nil {
+		response.Error(c, apperror.BadRequest("AUTH_TRUSTED_DEVICE_INVALID", "参数不合法", err))
+		return
+	}
+	if err := h.authService.RevokeTrustedDevice(c.Request.Context(), subject, c.Param("id"), input); err != nil {
+		response.Error(c, err)
+		return
+	}
+	clearTrustedDeviceCookie(c)
+	response.Success(c, gin.H{"deleted": true})
+}
+
 func (h *AuthHandler) Logout(c *gin.Context) {
 	response.Success(c, gin.H{"loggedOut": true})
 }
+
+func webAuthnRequestContext(c *gin.Context) service.WebAuthnRequestContext {
+	host := firstForwardedValue(c.Request.Host)
+	if forwardedHost := firstForwardedValue(c.GetHeader("X-Forwarded-Host")); forwardedHost != "" {
+		host = forwardedHost
+	}
+	rpID := host
+	if parsedHost, _, err := net.SplitHostPort(host); err == nil {
+		rpID = parsedHost
+	}
+	scheme := "http"
+	if c.Request.TLS != nil {
+		scheme = "https"
+	}
+	if forwardedProto := firstForwardedValue(c.GetHeader("X-Forwarded-Proto")); forwardedProto != "" {
+		scheme = forwardedProto
+	}
+	origin := strings.TrimSpace(c.GetHeader("Origin"))
+	if origin == "" {
+		origin = scheme + "://" + host
+	}
+	return service.WebAuthnRequestContext{RPID: rpID, Origin: origin}
+}
+
+func firstForwardedValue(value string) string {
+	parts := strings.Split(value, ",")
+	if len(parts) == 0 {
+		return ""
+	}
+	return strings.TrimSpace(parts[0])
+}
+
+func trustedDeviceCookieValue(c *gin.Context) string {
+	token, err := c.Cookie(trustedDeviceCookieName)
+	if err != nil {
+		return ""
+	}
+	return strings.TrimSpace(token)
+}
+
+func setTrustedDeviceCookie(c *gin.Context, token string) {
+	writeTrustedDeviceCookie(c, strings.TrimSpace(token), trustedDeviceCookieMaxAge)
+}
+
+func clearTrustedDeviceCookie(c *gin.Context) {
+	writeTrustedDeviceCookie(c, "", -1)
+}
+
+func writeTrustedDeviceCookie(c *gin.Context, value string, maxAge int) {
+	c.SetSameSite(stdhttp.SameSiteLaxMode)
+	c.SetCookie(trustedDeviceCookieName, value, maxAge, trustedDeviceCookiePath, "", requestIsSecure(c), true)
+}
+
+func requestIsSecure(c *gin.Context) bool {
+	if c.Request.TLS != nil {
+		return true
+	}
+	return strings.EqualFold(firstForwardedValue(c.GetHeader("X-Forwarded-Proto")), "https")
+}
--- a/server/internal/http/backup_record_handler.go
+++ b/server/internal/http/backup_record_handler.go
@@ -16,12 +16,13 @@ import (
 )

 type BackupRecordHandler struct {
-	service      *service.BackupRecordService
-	auditService *service.AuditService
+	service        *service.BackupRecordService
+	restoreService *service.RestoreService
+	auditService   *service.AuditService
 }

-func NewBackupRecordHandler(recordService *service.BackupRecordService, auditService *service.AuditService) *BackupRecordHandler {
-	return &BackupRecordHandler{service: recordService, auditService: auditService}
+func NewBackupRecordHandler(recordService *service.BackupRecordService, restoreService *service.RestoreService, auditService *service.AuditService) *BackupRecordHandler {
+	return &BackupRecordHandler{service: recordService, restoreService: restoreService, auditService: auditService}
 }

 func (h *BackupRecordHandler) List(c *gin.Context) {
@@ -51,6 +52,20 @@ func (h *BackupRecordHandler) Get(c *gin.Context) {
 	response.Success(c, item)
 }

+// Contents 返回备份记录的文件清单（内容浏览，只读）。
+func (h *BackupRecordHandler) Contents(c *gin.Context) {
+	id, ok := parseUintParam(c, "id")
+	if !ok {
+		return
+	}
+	contents, err := h.service.ListContents(c.Request.Context(), id)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, contents)
+}
+
 func (h *BackupRecordHandler) StreamLogs(c *gin.Context) {
 	id, ok := parseUintParam(c, "id")
 	if !ok {
@@ -121,18 +136,33 @@ func (h *BackupRecordHandler) Download(c *gin.Context) {
 	_, _ = io.Copy(c.Writer, result.Reader)
 }

+// Restore 启动一次异步恢复并返回 restoreRecordId；实际执行路由由 RestoreService
+// 根据 task.NodeID 决定（本地 Master or 远程 Agent）。
 func (h *BackupRecordHandler) Restore(c *gin.Context) {
 	id, ok := parseUintParam(c, "id")
 	if !ok {
 		return
 	}
-	if err := h.service.Restore(c.Request.Context(), id); err != nil {
+	if h.restoreService == nil {
+		response.Error(c, apperror.Internal("RESTORE_SERVICE_DISABLED", "恢复服务未启用", nil))
+		return
+	}
+	triggeredBy := ""
+	if subject, exists := c.Get(contextUserSubjectKey); exists {
+		triggeredBy = strings.TrimSpace(fmt.Sprintf("%v", subject))
+	}
+	var body struct {
+		SelectedPaths []string `json:"selectedPaths"`
+	}
+	_ = c.ShouldBindJSON(&body) // body 可选：无 body 为整体恢复，含 selectedPaths 为按需恢复
+	detail, err := h.restoreService.StartSelective(c.Request.Context(), id, body.SelectedPaths, triggeredBy)
+	if err != nil {
 		response.Error(c, err)
 		return
 	}
 	recordAudit(c, h.auditService, "backup_record", "restore", "backup_record", fmt.Sprintf("%d", id), "",
-		fmt.Sprintf("恢复备份记录 (ID: %d)", id))
-	response.Success(c, gin.H{"restored": true})
+		fmt.Sprintf("启动恢复 (备份记录 ID: %d, 恢复记录 ID: %d)", id, detail.ID))
+	response.Success(c, detail)
 }

 func (h *BackupRecordHandler) Delete(c *gin.Context) {
@@ -149,6 +179,32 @@ func (h *BackupRecordHandler) Delete(c *gin.Context) {
 	response.Success(c, gin.H{"deleted": true})
 }

+// SetLock 设置/解除备份记录的保留锁定（法律保留）。
+func (h *BackupRecordHandler) SetLock(c *gin.Context) {
+	id, ok := parseUintParam(c, "id")
+	if !ok {
+		return
+	}
+	var input struct {
+		Locked bool `json:"locked"`
+	}
+	if err := c.ShouldBindJSON(&input); err != nil {
+		response.Error(c, apperror.BadRequest("BACKUP_RECORD_LOCK_INVALID", "锁定参数不合法", err))
+		return
+	}
+	detail, err := h.service.SetLock(c.Request.Context(), id, input.Locked)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	action, desc := "unlock", fmt.Sprintf("解除备份记录保留锁定 (ID: %d)", id)
+	if input.Locked {
+		action, desc = "lock", fmt.Sprintf("设置备份记录保留锁定 (ID: %d)", id)
+	}
+	recordAudit(c, h.auditService, "backup_record", action, "backup_record", fmt.Sprintf("%d", id), "", desc)
+	response.Success(c, detail)
+}
+
 func (h *BackupRecordHandler) BatchDelete(c *gin.Context) {
 	var input struct {
 		IDs []uint `json:"ids" binding:"required,min=1"`
@@ -204,7 +260,7 @@ func writeSSEEvent(writer io.Writer, event backup.LogEvent) error {
 }

 func parseUintString(value string) (uint, bool) {
-	parsed, err := strconv.ParseUint(strings.TrimSpace(value), 10, 64)
+	parsed, err := strconv.ParseUint(strings.TrimSpace(value), 10, 0)
 	if err != nil {
 		return 0, false
 	}
--- a/server/internal/http/backup_run_handler.go
+++ b/server/internal/http/backup_run_handler.go
@@ -3,6 +3,7 @@ package http
 import (
 	"fmt"

+	"backupx/server/internal/apperror"
 	"backupx/server/internal/service"
 	"backupx/server/pkg/response"
 	"github.com/gin-gonic/gin"
@@ -30,3 +31,37 @@ func (h *BackupRunHandler) Run(c *gin.Context) {
 	recordAudit(c, h.auditService, "backup_task", "run", "backup_task", fmt.Sprintf("%d", id), "", "手动触发备份")
 	response.Success(c, record)
 }
+
+// BatchRun 批量触发备份任务。best-effort：单个失败不影响其他。
+// Body: {"ids": [1,2,3]}
+func (h *BackupRunHandler) BatchRun(c *gin.Context) {
+	var input struct {
+		IDs []uint `json:"ids" binding:"required,min=1"`
+	}
+	if err := c.ShouldBindJSON(&input); err != nil {
+		response.Error(c, apperror.BadRequest("BACKUP_TASK_BATCH_INVALID", "批量执行参数不合法", err))
+		return
+	}
+	results := make([]service.BatchResult, 0, len(input.IDs))
+	succ := 0
+	for _, id := range input.IDs {
+		if id == 0 {
+			continue
+		}
+		_, err := h.service.RunTaskByID(c.Request.Context(), id)
+		item := service.BatchResult{ID: id, Success: err == nil}
+		if err != nil {
+			if appErr, ok := err.(*apperror.AppError); ok {
+				item.Error = appErr.Message
+			} else {
+				item.Error = err.Error()
+			}
+		} else {
+			succ++
+		}
+		results = append(results, item)
+	}
+	recordAudit(c, h.auditService, "backup_task", "batch_run", "backup_task", "", "",
+		fmt.Sprintf("批量触发备份 %d/%d", succ, len(results)))
+	response.Success(c, results)
+}
--- a/server/internal/http/backup_task_handler.go
+++ b/server/internal/http/backup_task_handler.go
@@ -40,6 +40,16 @@ func (h *BackupTaskHandler) List(c *gin.Context) {
 	response.Success(c, items)
 }

+// ListTags 返回系统内所有任务用过的唯一标签列表，供前端标签选择器的建议词。
+func (h *BackupTaskHandler) ListTags(c *gin.Context) {
+	tags, err := h.service.ListTags(c.Request.Context())
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, tags)
+}
+
 func (h *BackupTaskHandler) Get(c *gin.Context) {
 	id, ok := parseUintParam(c, "id")
 	if !ok {
@@ -106,6 +116,55 @@ func (h *BackupTaskHandler) Delete(c *gin.Context) {
 	response.Success(c, gin.H{"deleted": true})
 }

+// BatchToggle / BatchDelete 批量操作。
+// Body: {"ids": [1,2,3], "enabled": true}  (enabled 仅 toggle 用)
+func (h *BackupTaskHandler) BatchToggle(c *gin.Context) {
+	var input struct {
+		IDs     []uint `json:"ids" binding:"required,min=1"`
+		Enabled bool   `json:"enabled"`
+	}
+	if err := c.ShouldBindJSON(&input); err != nil {
+		response.Error(c, apperror.BadRequest("BACKUP_TASK_BATCH_INVALID", "批量操作参数不合法", err))
+		return
+	}
+	results := h.service.BatchToggle(c.Request.Context(), input.IDs, input.Enabled)
+	succ := 0
+	for _, r := range results {
+		if r.Success {
+			succ++
+		}
+	}
+	action := "batch_enable"
+	label := "启用"
+	if !input.Enabled {
+		action = "batch_disable"
+		label = "停用"
+	}
+	recordAudit(c, h.auditService, "backup_task", action, "backup_task", "", "",
+		fmt.Sprintf("批量%s %d/%d 个任务", label, succ, len(results)))
+	response.Success(c, results)
+}
+
+func (h *BackupTaskHandler) BatchDelete(c *gin.Context) {
+	var input struct {
+		IDs []uint `json:"ids" binding:"required,min=1"`
+	}
+	if err := c.ShouldBindJSON(&input); err != nil {
+		response.Error(c, apperror.BadRequest("BACKUP_TASK_BATCH_INVALID", "批量删除参数不合法", err))
+		return
+	}
+	results := h.service.BatchDeleteTasks(c.Request.Context(), input.IDs)
+	succ := 0
+	for _, r := range results {
+		if r.Success {
+			succ++
+		}
+	}
+	recordAudit(c, h.auditService, "backup_task", "batch_delete", "backup_task", "", "",
+		fmt.Sprintf("批量删除 %d/%d 个任务", succ, len(results)))
+	response.Success(c, results)
+}
+
 func (h *BackupTaskHandler) Toggle(c *gin.Context) {
 	id, ok := parseUintParam(c, "id")
 	if !ok {
--- a/server/internal/http/context.go
+++ b/server/internal/http/context.go
@@ -1,3 +1,9 @@
 package http

-const contextUserSubjectKey = "userSubject"
+const (
+	contextUserSubjectKey = "userSubject"
+	contextUserRoleKey    = "userRole"
+	contextUsernameKey    = "username"
+	// contextAuthSubjectKey 标识认证主体来源（user | api_key），便于审计追踪。
+	contextAuthSubjectKey = "authSubject"
+)
--- a/server/internal/http/dashboard_handler.go
+++ b/server/internal/http/dashboard_handler.go
@@ -27,6 +27,58 @@ func (h *DashboardHandler) Stats(c *gin.Context) {
 	response.Success(c, payload)
 }

+// SLA 返回所有启用任务的 SLA 合规视图。用于 Dashboard 企业合规卡片。
+func (h *DashboardHandler) SLA(c *gin.Context) {
+	payload, err := h.service.SLACompliance(c.Request.Context())
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, payload)
+}
+
+// Cluster 返回集群节点概览（在线/离线/过期 Agent 等），用于 Dashboard 卡片。
+func (h *DashboardHandler) Cluster(c *gin.Context) {
+	payload, err := h.service.ClusterOverview(c.Request.Context())
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, payload)
+}
+
+// NodePerformance 返回各节点近 N 天的执行表现（成功率/字节数/平均耗时）。
+func (h *DashboardHandler) NodePerformance(c *gin.Context) {
+	days := 30
+	if v := strings.TrimSpace(c.Query("days")); v != "" {
+		if parsed, err := strconv.Atoi(v); err == nil && parsed > 0 {
+			days = parsed
+		}
+	}
+	payload, err := h.service.NodePerformance(c.Request.Context(), days)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, payload)
+}
+
+// Breakdown 返回按类型/状态/节点/存储分组的统计。
+func (h *DashboardHandler) Breakdown(c *gin.Context) {
+	days := 30
+	if v := strings.TrimSpace(c.Query("days")); v != "" {
+		if parsed, err := strconv.Atoi(v); err == nil && parsed > 0 {
+			days = parsed
+		}
+	}
+	payload, err := h.service.Breakdown(c.Request.Context(), days)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, payload)
+}
+
 func (h *DashboardHandler) Timeline(c *gin.Context) {
 	days := 30
 	if value := strings.TrimSpace(c.Query("days")); value != "" {
--- a/server/internal/http/events_handler.go
+++ b/server/internal/http/events_handler.go
@@ -0,0 +1,81 @@
+package http
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"time"
+
+	"backupx/server/internal/apperror"
+	"backupx/server/internal/service"
+	"backupx/server/pkg/response"
+
+	"github.com/gin-gonic/gin"
+)
+
+// EventsHandler 实时事件推送（SSE）。
+// 前端通过 EventSource 订阅 /api/events/stream，实时接收系统事件，
+// 用于 Dashboard 免刷新更新 / 桌面 Toast / 实时告警。
+type EventsHandler struct {
+	broadcaster *service.EventBroadcaster
+}
+
+func NewEventsHandler(broadcaster *service.EventBroadcaster) *EventsHandler {
+	return &EventsHandler{broadcaster: broadcaster}
+}
+
+// Stream SSE 长连接。JWT/API Key 中间件之后。
+// 心跳：每 25s 发一条 comment 行（: keepalive）保持连接不被代理断开。
+func (h *EventsHandler) Stream(c *gin.Context) {
+	if h.broadcaster == nil {
+		response.Error(c, apperror.Internal("EVENTS_DISABLED", "事件广播器未启用", nil))
+		return
+	}
+	c.Writer.Header().Set("Content-Type", "text/event-stream")
+	c.Writer.Header().Set("Cache-Control", "no-cache")
+	c.Writer.Header().Set("Connection", "keep-alive")
+	c.Writer.Header().Set("X-Accel-Buffering", "no") // 禁用 nginx 缓冲
+	flusher, ok := c.Writer.(interface{ Flush() })
+	if !ok {
+		response.Error(c, apperror.Internal("EVENTS_STREAM_UNSUPPORTED", "当前连接不支持 SSE", nil))
+		return
+	}
+	// 首先发送一次 hello 让客户端确认连通
+	_, _ = fmt.Fprintf(c.Writer, ": connected %d\n\n", time.Now().Unix())
+	flusher.Flush()
+
+	ch, cancel := h.broadcaster.Subscribe(32)
+	defer cancel()
+
+	heartbeat := time.NewTicker(25 * time.Second)
+	defer heartbeat.Stop()
+
+	for {
+		select {
+		case <-c.Request.Context().Done():
+			return
+		case <-heartbeat.C:
+			if _, err := fmt.Fprintf(c.Writer, ": heartbeat %d\n\n", time.Now().Unix()); err != nil {
+				return
+			}
+			flusher.Flush()
+		case envelope, ok := <-ch:
+			if !ok {
+				return
+			}
+			if err := writeEventEnvelope(c.Writer, envelope); err != nil {
+				return
+			}
+			flusher.Flush()
+		}
+	}
+}
+
+func writeEventEnvelope(writer io.Writer, envelope service.EventEnvelope) error {
+	data, err := json.Marshal(envelope)
+	if err != nil {
+		return err
+	}
+	_, err = fmt.Fprintf(writer, "event: %s\ndata: %s\n\n", envelope.Type, data)
+	return err
+}
--- a/server/internal/http/health_handler.go
+++ b/server/internal/http/health_handler.go
@@ -0,0 +1,75 @@
+package http
+
+import (
+	stdhttp "net/http"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"gorm.io/gorm"
+)
+
+// HealthHandler 提供 K8s/Swarm 风格的健康检查端点。
+//
+// - /health ：liveness 探针。进程存活即 200（不检查任何依赖）。
+// - /ready  ：readiness 探针。检查数据库连通，不通则返回 503。
+//
+// 两者均为公开端点（无认证中间件），供外部编排系统探测。
+// 输出最少信息，避免泄露内部结构。
+type HealthHandler struct {
+	db        *gorm.DB
+	startedAt time.Time
+	version   string
+}
+
+func NewHealthHandler(db *gorm.DB, version string) *HealthHandler {
+	return &HealthHandler{db: db, startedAt: time.Now().UTC(), version: version}
+}
+
+// Live 用于 liveness：只要进程能响应就返回 200。
+func (h *HealthHandler) Live(c *gin.Context) {
+	c.JSON(stdhttp.StatusOK, gin.H{
+		"status":    "live",
+		"version":   h.version,
+		"uptime":    int(time.Since(h.startedAt).Seconds()),
+		"timestamp": time.Now().UTC().Format(time.RFC3339),
+	})
+}
+
+// Ready 用于 readiness：依赖（数据库）不可用时返回 503。
+// 新实例启动或数据库短暂失联时，编排系统据此停止转发流量。
+func (h *HealthHandler) Ready(c *gin.Context) {
+	checks := map[string]string{}
+	overallOK := true
+	if h.db != nil {
+		sqlDB, err := h.db.DB()
+		if err != nil {
+			checks["database"] = "error: " + err.Error()
+			overallOK = false
+		} else {
+			ctx, cancel := c.Request.Context(), func() {}
+			_ = cancel
+			if err := sqlDB.PingContext(ctx); err != nil {
+				checks["database"] = "ping failed: " + err.Error()
+				overallOK = false
+			} else {
+				checks["database"] = "ok"
+			}
+		}
+	} else {
+		checks["database"] = "not configured"
+		overallOK = false
+	}
+	status := stdhttp.StatusOK
+	state := "ready"
+	if !overallOK {
+		status = stdhttp.StatusServiceUnavailable
+		state = "not_ready"
+	}
+	c.JSON(status, gin.H{
+		"status":    state,
+		"version":   h.version,
+		"uptime":    int(time.Since(h.startedAt).Seconds()),
+		"checks":    checks,
+		"timestamp": time.Now().UTC().Format(time.RFC3339),
+	})
+}
--- a/server/internal/http/install_flow_test.go
+++ b/server/internal/http/install_flow_test.go
@@ -0,0 +1,582 @@
+package http
+
+import (
+	"bytes"
+	"context"
+	"encoding/base64"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"path/filepath"
+	"strconv"
+	"strings"
+	"testing"
+	"time"
+
+	"backupx/server/internal/config"
+	"backupx/server/internal/database"
+	"backupx/server/internal/logger"
+	"backupx/server/internal/repository"
+	"backupx/server/internal/security"
+	"backupx/server/internal/service"
+	"backupx/server/internal/storage/codec"
+)
+
+// setupInstallFlowRouter 构造一个 Node + Agent + InstallToken 全量依赖的 router，
+// 并返回已登录管理员 JWT。
+func setupInstallFlowRouter(t *testing.T) (http.Handler, string) {
+	return setupInstallFlowRouterWithExternalURL(t, "")
+}
+
+func setupInstallFlowRouterWithExternalURL(t *testing.T, externalURL string) (http.Handler, string) {
+	t.Helper()
+	tempDir := t.TempDir()
+	cfg := config.Config{
+		Server:   config.ServerConfig{Host: "127.0.0.1", Port: 8340, Mode: "test", ExternalURL: externalURL},
+		Database: config.DatabaseConfig{Path: filepath.Join(tempDir, "backupx.db")},
+		Security: config.SecurityConfig{JWTExpire: "24h"},
+		Log:      config.LogConfig{Level: "error"},
+	}
+	log, err := logger.New(cfg.Log)
+	if err != nil {
+		t.Fatalf("logger: %v", err)
+	}
+	db, err := database.Open(cfg.Database, log)
+	if err != nil {
+		t.Fatalf("db: %v", err)
+	}
+	sqlDB, err := db.DB()
+	if err != nil {
+		t.Fatalf("sql db: %v", err)
+	}
+	t.Cleanup(func() {
+		_ = sqlDB.Close()
+	})
+
+	userRepo := repository.NewUserRepository(db)
+	systemConfigRepo := repository.NewSystemConfigRepository(db)
+	resolved, err := service.ResolveSecurity(context.Background(), cfg.Security, systemConfigRepo)
+	if err != nil {
+		t.Fatalf("security: %v", err)
+	}
+	jwtMgr := security.NewJWTManager(resolved.JWTSecret, time.Hour)
+	authSvc := service.NewAuthService(userRepo, systemConfigRepo, jwtMgr, security.NewLoginRateLimiter(5, time.Minute), codec.NewConfigCipher(resolved.EncryptionKey))
+	systemSvc := service.NewSystemService(cfg, "test", time.Now().UTC())
+
+	nodeRepo := repository.NewNodeRepository(db)
+	nodeSvc := service.NewNodeService(nodeRepo, "test")
+	if err := nodeSvc.EnsureLocalNode(context.Background()); err != nil {
+		t.Fatalf("ensure local: %v", err)
+	}
+
+	installTokenRepo := repository.NewAgentInstallTokenRepository(db)
+	installTokenSvc := service.NewInstallTokenService(installTokenRepo, nodeRepo)
+
+	// 用 cancelable ctx，测试结束时停掉 handler 启动的后台 GC 协程，
+	// 避免 goroutine 持有 map 导致 tempdir 清理失败。
+	ctx, cancel := context.WithCancel(context.Background())
+	t.Cleanup(cancel)
+
+	router := NewRouter(RouterDependencies{
+		Context:             ctx,
+		Config:              cfg,
+		Version:             "test",
+		Logger:              log,
+		AuthService:         authSvc,
+		SystemService:       systemSvc,
+		NodeService:         nodeSvc,
+		InstallTokenService: installTokenSvc,
+		MasterExternalURL:   cfg.Server.ExternalURL,
+		JWTManager:          jwtMgr,
+		UserRepository:      userRepo,
+		SystemConfigRepo:    systemConfigRepo,
+	})
+
+	// setup 管理员并登录拿 JWT
+	setupBody, _ := json.Marshal(map[string]string{
+		"username": "admin", "password": "password-123", "displayName": "admin",
+	})
+	setupReq := httptest.NewRequest(http.MethodPost, "/api/auth/setup", bytes.NewBuffer(setupBody))
+	setupReq.Header.Set("Content-Type", "application/json")
+	setupRec := httptest.NewRecorder()
+	router.ServeHTTP(setupRec, setupReq)
+	if setupRec.Code != 200 {
+		t.Fatalf("setup failed: %d %s", setupRec.Code, setupRec.Body.String())
+	}
+	var setupResp struct {
+		Data struct {
+			Token string `json:"token"`
+		} `json:"data"`
+	}
+	if err := json.Unmarshal(setupRec.Body.Bytes(), &setupResp); err != nil {
+		t.Fatalf("unmarshal setup: %v", err)
+	}
+
+	return router, setupResp.Data.Token
+}
+
+func TestInstallTokenUsesConfiguredExternalURL(t *testing.T) {
+	const externalURL = "https://public.example.com/base"
+	router, jwt := setupInstallFlowRouterWithExternalURL(t, externalURL)
+
+	batchBody, _ := json.Marshal(map[string][]string{"names": {"external-url-node"}})
+	batchReq := httptest.NewRequest(http.MethodPost, "/api/nodes/batch", bytes.NewBuffer(batchBody))
+	batchReq.Header.Set("Content-Type", "application/json")
+	batchReq.Header.Set("Authorization", "Bearer "+jwt)
+	batchRec := httptest.NewRecorder()
+	router.ServeHTTP(batchRec, batchReq)
+	if batchRec.Code != 200 {
+		t.Fatalf("batch create failed: %d %s", batchRec.Code, batchRec.Body.String())
+	}
+	var batchResp struct {
+		Data []struct {
+			ID uint `json:"id"`
+		} `json:"data"`
+	}
+	if err := json.Unmarshal(batchRec.Body.Bytes(), &batchResp); err != nil {
+		t.Fatalf("unmarshal batch: %v", err)
+	}
+	if len(batchResp.Data) != 1 {
+		t.Fatalf("expected 1 node, got %d", len(batchResp.Data))
+	}
+
+	genBody, _ := json.Marshal(map[string]any{
+		"mode":         "systemd",
+		"arch":         "auto",
+		"agentVersion": "v1.7.0",
+		"downloadSrc":  "github",
+		"ttlSeconds":   900,
+	})
+	genReq := httptest.NewRequest(http.MethodPost,
+		"/api/nodes/"+formatUint(batchResp.Data[0].ID)+"/install-tokens", bytes.NewBuffer(genBody))
+	genReq.Header.Set("Content-Type", "application/json")
+	genReq.Header.Set("Authorization", "Bearer "+jwt)
+	genRec := httptest.NewRecorder()
+	router.ServeHTTP(genRec, genReq)
+	if genRec.Code != 200 {
+		t.Fatalf("install-tokens failed: %d %s", genRec.Code, genRec.Body.String())
+	}
+	var genResp struct {
+		Data struct {
+			InstallToken string `json:"installToken"`
+			URL          string `json:"url"`
+			FallbackURL  string `json:"fallbackUrl"`
+			ScriptBase64 string `json:"scriptBase64"`
+		} `json:"data"`
+	}
+	if err := json.Unmarshal(genRec.Body.Bytes(), &genResp); err != nil {
+		t.Fatalf("unmarshal gen: %v", err)
+	}
+	if genResp.Data.URL != externalURL+"/api/install/"+genResp.Data.InstallToken {
+		t.Fatalf("url should use external URL, got %q", genResp.Data.URL)
+	}
+	if genResp.Data.FallbackURL != externalURL+"/install/"+genResp.Data.InstallToken {
+		t.Fatalf("fallbackUrl should use external URL, got %q", genResp.Data.FallbackURL)
+	}
+	decodedScript, err := base64.StdEncoding.DecodeString(genResp.Data.ScriptBase64)
+	if err != nil {
+		t.Fatalf("scriptBase64 should be valid base64: %v", err)
+	}
+	if !strings.Contains(string(decodedScript), `MASTER_URL="`+externalURL+`"`) {
+		t.Fatalf("script should use external MASTER_URL:\n%s", string(decodedScript))
+	}
+}
+
+func TestOneClickInstallFlow(t *testing.T) {
+	router, jwt := setupInstallFlowRouter(t)
+
+	// 1. 批量创建
+	batchBody, _ := json.Marshal(map[string][]string{"names": {"prod-a", "prod-b"}})
+	batchReq := httptest.NewRequest(http.MethodPost, "/api/nodes/batch", bytes.NewBuffer(batchBody))
+	batchReq.Header.Set("Content-Type", "application/json")
+	batchReq.Header.Set("Authorization", "Bearer "+jwt)
+	batchRec := httptest.NewRecorder()
+	router.ServeHTTP(batchRec, batchReq)
+	if batchRec.Code != 200 {
+		t.Fatalf("batch create failed: %d %s", batchRec.Code, batchRec.Body.String())
+	}
+	var batchResp struct {
+		Data []struct {
+			ID   uint   `json:"id"`
+			Name string `json:"name"`
+		} `json:"data"`
+	}
+	if err := json.Unmarshal(batchRec.Body.Bytes(), &batchResp); err != nil {
+		t.Fatalf("unmarshal batch: %v", err)
+	}
+	if len(batchResp.Data) != 2 {
+		t.Fatalf("expected 2 nodes, got %d", len(batchResp.Data))
+	}
+	nodeID := batchResp.Data[0].ID
+
+	// 2. 生成 install token
+	genBody, _ := json.Marshal(map[string]any{
+		"mode":         "systemd",
+		"arch":         "auto",
+		"agentVersion": "v1.7.0",
+		"downloadSrc":  "github",
+		"ttlSeconds":   900,
+	})
+	genReq := httptest.NewRequest(http.MethodPost,
+		"/api/nodes/"+formatUint(nodeID)+"/install-tokens", bytes.NewBuffer(genBody))
+	genReq.Header.Set("Content-Type", "application/json")
+	genReq.Header.Set("Authorization", "Bearer "+jwt)
+	genRec := httptest.NewRecorder()
+	router.ServeHTTP(genRec, genReq)
+	if genRec.Code != 200 {
+		t.Fatalf("install-tokens failed: %d %s", genRec.Code, genRec.Body.String())
+	}
+	var genResp struct {
+		Data struct {
+			InstallToken string `json:"installToken"`
+			URL          string `json:"url"`
+			FallbackURL  string `json:"fallbackUrl"`
+			ScriptBase64 string `json:"scriptBase64"`
+		} `json:"data"`
+	}
+	if err := json.Unmarshal(genRec.Body.Bytes(), &genResp); err != nil {
+		t.Fatalf("unmarshal gen: %v", err)
+	}
+	if genResp.Data.InstallToken == "" {
+		t.Fatalf("missing installToken")
+	}
+	if !strings.Contains(genResp.Data.FallbackURL, "/install/") {
+		t.Fatalf("missing fallback install URL, got %q", genResp.Data.FallbackURL)
+	}
+	decodedScript, err := base64.StdEncoding.DecodeString(genResp.Data.ScriptBase64)
+	if err != nil {
+		t.Fatalf("scriptBase64 should be valid base64: %v", err)
+	}
+	if !strings.Contains(string(decodedScript), "BACKUPX_AGENT_INSTALL_V1") {
+		t.Fatalf("scriptBase64 should contain rendered install script")
+	}
+
+	// 3. 公开端点消费
+	scriptReq := httptest.NewRequest(http.MethodGet, "/install/"+genResp.Data.InstallToken, nil)
+	scriptRec := httptest.NewRecorder()
+	router.ServeHTTP(scriptRec, scriptReq)
+	if scriptRec.Code != 200 {
+		t.Fatalf("script fetch failed: %d %s", scriptRec.Code, scriptRec.Body.String())
+	}
+	if !strings.Contains(scriptRec.Body.String(), "systemctl enable --now backupx-agent") {
+		t.Fatalf("script missing systemctl enable:\n%s", scriptRec.Body.String())
+	}
+	// Issue #46 防嗅探 headers：text/plain + nosniff + no-store + Content-Disposition
+	if ct := scriptRec.Header().Get("Content-Type"); !strings.HasPrefix(ct, "text/plain") {
+		t.Errorf("script Content-Type should be text/plain*, got %q", ct)
+	}
+	if nosniff := scriptRec.Header().Get("X-Content-Type-Options"); nosniff != "nosniff" {
+		t.Errorf("missing X-Content-Type-Options: nosniff (got %q)", nosniff)
+	}
+	if cc := scriptRec.Header().Get("Cache-Control"); !strings.Contains(cc, "no-store") {
+		t.Errorf("missing Cache-Control: no-store (got %q)", cc)
+	}
+	if cd := scriptRec.Header().Get("Content-Disposition"); !strings.Contains(cd, "backupx-agent-install.sh") {
+		t.Errorf("Content-Disposition should name the script file (got %q)", cd)
+	}
+	if !strings.Contains(scriptRec.Body.String(), "BACKUPX_AGENT_INSTALL_V1") {
+		t.Errorf("script missing magic marker BACKUPX_AGENT_INSTALL_V1")
+	}
+
+	// 4. 再次消费应 410
+	scriptReq2 := httptest.NewRequest(http.MethodGet, "/install/"+genResp.Data.InstallToken, nil)
+	scriptRec2 := httptest.NewRecorder()
+	router.ServeHTTP(scriptRec2, scriptReq2)
+	if scriptRec2.Code != http.StatusGone {
+		t.Fatalf("second consume should be 410, got %d: %s", scriptRec2.Code, scriptRec2.Body.String())
+	}
+}
+
+// TestInstallScriptAliasUnderAPI 验证 /api/install/:token 别名路径可用，
+// 这是 Issue #46 的根本修复：让 install 端点自动命中反向代理的 /api/ 转发规则，
+// 避免 nginx SPA fallback 把请求当前端路由返回 index.html。
+func TestInstallScriptAliasUnderAPI(t *testing.T) {
+	router, token := setupInstallFlowRouter(t)
+
+	// 1. 创建一个节点，生成 install token
+	batchBody, _ := json.Marshal(map[string][]string{"names": {"alias-node"}})
+	batchReq := httptest.NewRequest(http.MethodPost, "/api/nodes/batch", bytes.NewReader(batchBody))
+	batchReq.Header.Set("Content-Type", "application/json")
+	batchReq.Header.Set("Authorization", "Bearer "+token)
+	batchRec := httptest.NewRecorder()
+	router.ServeHTTP(batchRec, batchReq)
+	if batchRec.Code != 200 {
+		t.Fatalf("batch create failed: %d %s", batchRec.Code, batchRec.Body.String())
+	}
+	var batchResp struct {
+		Data []struct {
+			ID uint `json:"id"`
+		} `json:"data"`
+	}
+	_ = json.Unmarshal(batchRec.Body.Bytes(), &batchResp)
+	if len(batchResp.Data) == 0 {
+		t.Fatalf("batch create returned no nodes: %s", batchRec.Body.String())
+	}
+	nodeID := batchResp.Data[0].ID
+
+	genBody, _ := json.Marshal(map[string]any{
+		"mode": "systemd", "arch": "auto", "agentVersion": "v1.7.0", "downloadSrc": "github", "ttlSeconds": 600,
+	})
+	genReq := httptest.NewRequest(http.MethodPost,
+		"/api/nodes/"+strconv.FormatUint(uint64(nodeID), 10)+"/install-tokens", bytes.NewReader(genBody))
+	genReq.Header.Set("Content-Type", "application/json")
+	genReq.Header.Set("Authorization", "Bearer "+token)
+	genRec := httptest.NewRecorder()
+	router.ServeHTTP(genRec, genReq)
+	if genRec.Code != 200 {
+		t.Fatalf("gen install token failed: %d %s", genRec.Code, genRec.Body.String())
+	}
+	var genResp struct {
+		Data struct {
+			InstallToken string `json:"installToken"`
+			URL          string `json:"url"`
+			FallbackURL  string `json:"fallbackUrl"`
+			ScriptBase64 string `json:"scriptBase64"`
+		} `json:"data"`
+	}
+	_ = json.Unmarshal(genRec.Body.Bytes(), &genResp)
+
+	// 2. 新生成的 url 应指向 /api/install/... —— 让反向代理的 /api/ 转发规则自动接管
+	if !strings.Contains(genResp.Data.URL, "/api/install/") {
+		t.Errorf("new install URL should use /api/install/ prefix, got %s", genResp.Data.URL)
+	}
+	if !strings.Contains(genResp.Data.FallbackURL, "/install/") {
+		t.Errorf("fallback install URL should use /install/ prefix, got %s", genResp.Data.FallbackURL)
+	}
+	if genResp.Data.ScriptBase64 == "" {
+		t.Errorf("new install response should include scriptBase64 for proxy-independent commands")
+	}
+
+	// 3. /api/install/:token 必须可消费（与 /install/:token 等价）
+	aliasReq := httptest.NewRequest(http.MethodGet, "/api/install/"+genResp.Data.InstallToken, nil)
+	aliasRec := httptest.NewRecorder()
+	router.ServeHTTP(aliasRec, aliasReq)
+	if aliasRec.Code != 200 {
+		t.Fatalf("/api/install alias failed: %d %s", aliasRec.Code, aliasRec.Body.String())
+	}
+	if !strings.Contains(aliasRec.Body.String(), "systemctl enable --now backupx-agent") {
+		t.Errorf("alias should return rendered script, got:\n%s", aliasRec.Body.String())
+	}
+	if ct := aliasRec.Header().Get("Content-Type"); !strings.HasPrefix(ct, "text/plain") {
+		t.Errorf("alias Content-Type should be text/plain*, got %q", ct)
+	}
+}
+
+func TestInstallTokenRateLimit(t *testing.T) {
+	router, jwt := setupInstallFlowRouter(t)
+
+	batchBody, _ := json.Marshal(map[string][]string{"names": {"rl-test"}})
+	batchReq := httptest.NewRequest(http.MethodPost, "/api/nodes/batch", bytes.NewBuffer(batchBody))
+	batchReq.Header.Set("Content-Type", "application/json")
+	batchReq.Header.Set("Authorization", "Bearer "+jwt)
+	batchRec := httptest.NewRecorder()
+	router.ServeHTTP(batchRec, batchReq)
+	if batchRec.Code != 200 {
+		t.Fatalf("batch: %d %s", batchRec.Code, batchRec.Body.String())
+	}
+	var batchResp struct {
+		Data []struct {
+			ID uint `json:"id"`
+		} `json:"data"`
+	}
+	_ = json.Unmarshal(batchRec.Body.Bytes(), &batchResp)
+	nodeID := batchResp.Data[0].ID
+
+	body, _ := json.Marshal(map[string]any{
+		"mode": "systemd", "arch": "auto", "agentVersion": "v1",
+		"downloadSrc": "github", "ttlSeconds": 300,
+	})
+	for i := 0; i < 5; i++ {
+		req := httptest.NewRequest(http.MethodPost,
+			"/api/nodes/"+formatUint(nodeID)+"/install-tokens", bytes.NewBuffer(body))
+		req.Header.Set("Content-Type", "application/json")
+		req.Header.Set("Authorization", "Bearer "+jwt)
+		rec := httptest.NewRecorder()
+		router.ServeHTTP(rec, req)
+		if rec.Code != 200 {
+			t.Fatalf("iter %d expected 200, got %d: %s", i, rec.Code, rec.Body.String())
+		}
+	}
+	req := httptest.NewRequest(http.MethodPost,
+		"/api/nodes/"+formatUint(nodeID)+"/install-tokens", bytes.NewBuffer(body))
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Authorization", "Bearer "+jwt)
+	rec := httptest.NewRecorder()
+	router.ServeHTTP(rec, req)
+	if rec.Code != http.StatusTooManyRequests {
+		t.Fatalf("expected 429, got %d: %s", rec.Code, rec.Body.String())
+	}
+}
+
+func TestRotateTokenFlow(t *testing.T) {
+	router, jwt := setupInstallFlowRouter(t)
+
+	batchBody, _ := json.Marshal(map[string][]string{"names": {"rot-x"}})
+	batchReq := httptest.NewRequest(http.MethodPost, "/api/nodes/batch", bytes.NewBuffer(batchBody))
+	batchReq.Header.Set("Content-Type", "application/json")
+	batchReq.Header.Set("Authorization", "Bearer "+jwt)
+	batchRec := httptest.NewRecorder()
+	router.ServeHTTP(batchRec, batchReq)
+	var batchResp struct {
+		Data []struct {
+			ID uint `json:"id"`
+		} `json:"data"`
+	}
+	_ = json.Unmarshal(batchRec.Body.Bytes(), &batchResp)
+	nodeID := batchResp.Data[0].ID
+
+	rotReq := httptest.NewRequest(http.MethodPost,
+		"/api/nodes/"+formatUint(nodeID)+"/rotate-token", nil)
+	rotReq.Header.Set("Authorization", "Bearer "+jwt)
+	rotRec := httptest.NewRecorder()
+	router.ServeHTTP(rotRec, rotReq)
+	if rotRec.Code != 200 {
+		t.Fatalf("rotate failed: %d %s", rotRec.Code, rotRec.Body.String())
+	}
+	var rotResp struct {
+		Data struct {
+			NewToken string `json:"newToken"`
+		} `json:"data"`
+	}
+	_ = json.Unmarshal(rotRec.Body.Bytes(), &rotResp)
+	if len(rotResp.Data.NewToken) != 64 {
+		t.Fatalf("new token wrong length: %s", rotResp.Data.NewToken)
+	}
+}
+
+func TestInstallFlowComposeModeMismatch(t *testing.T) {
+	router, jwt := setupInstallFlowRouter(t)
+
+	batchBody, _ := json.Marshal(map[string][]string{"names": {"cm"}})
+	batchReq := httptest.NewRequest(http.MethodPost, "/api/nodes/batch", bytes.NewBuffer(batchBody))
+	batchReq.Header.Set("Content-Type", "application/json")
+	batchReq.Header.Set("Authorization", "Bearer "+jwt)
+	batchRec := httptest.NewRecorder()
+	router.ServeHTTP(batchRec, batchReq)
+	var batchResp struct {
+		Data []struct {
+			ID uint `json:"id"`
+		} `json:"data"`
+	}
+	_ = json.Unmarshal(batchRec.Body.Bytes(), &batchResp)
+	nodeID := batchResp.Data[0].ID
+
+	// 生成 systemd 模式的 token
+	genBody, _ := json.Marshal(map[string]any{
+		"mode": "systemd", "arch": "auto", "agentVersion": "v1",
+		"downloadSrc": "github", "ttlSeconds": 300,
+	})
+	genReq := httptest.NewRequest(http.MethodPost,
+		"/api/nodes/"+formatUint(nodeID)+"/install-tokens", bytes.NewBuffer(genBody))
+	genReq.Header.Set("Content-Type", "application/json")
+	genReq.Header.Set("Authorization", "Bearer "+jwt)
+	genRec := httptest.NewRecorder()
+	router.ServeHTTP(genRec, genReq)
+	var genResp struct {
+		Data struct {
+			InstallToken string `json:"installToken"`
+		} `json:"data"`
+	}
+	_ = json.Unmarshal(genRec.Body.Bytes(), &genResp)
+
+	// 访问 compose.yml 应 400
+	req := httptest.NewRequest(http.MethodGet,
+		"/install/"+genResp.Data.InstallToken+"/compose.yml", nil)
+	rec := httptest.NewRecorder()
+	router.ServeHTTP(rec, req)
+	if rec.Code != http.StatusBadRequest {
+		t.Fatalf("expected 400 for mode mismatch, got %d: %s", rec.Code, rec.Body.String())
+	}
+	// systemd token 未被消费（Peek 不消费）→ 应仍可通过 /install/:token 消费成功
+	req2 := httptest.NewRequest(http.MethodGet, "/install/"+genResp.Data.InstallToken, nil)
+	rec2 := httptest.NewRecorder()
+	router.ServeHTTP(rec2, req2)
+	if rec2.Code != 200 {
+		t.Fatalf("original script fetch should still work: %d %s", rec2.Code, rec2.Body.String())
+	}
+}
+
+func TestInstallFlowComposeSuccessConsumesToken(t *testing.T) {
+	router, jwt := setupInstallFlowRouter(t)
+
+	batchBody, _ := json.Marshal(map[string][]string{"names": {"compose-ok"}})
+	batchReq := httptest.NewRequest(http.MethodPost, "/api/nodes/batch", bytes.NewBuffer(batchBody))
+	batchReq.Header.Set("Content-Type", "application/json")
+	batchReq.Header.Set("Authorization", "Bearer "+jwt)
+	batchRec := httptest.NewRecorder()
+	router.ServeHTTP(batchRec, batchReq)
+	if batchRec.Code != 200 {
+		t.Fatalf("batch create failed: %d %s", batchRec.Code, batchRec.Body.String())
+	}
+	var batchResp struct {
+		Data []struct {
+			ID uint `json:"id"`
+		} `json:"data"`
+	}
+	if err := json.Unmarshal(batchRec.Body.Bytes(), &batchResp); err != nil {
+		t.Fatalf("unmarshal batch: %v", err)
+	}
+	if len(batchResp.Data) != 1 {
+		t.Fatalf("expected 1 node, got %d", len(batchResp.Data))
+	}
+
+	genBody, _ := json.Marshal(map[string]any{
+		"mode":         "docker",
+		"arch":         "auto",
+		"agentVersion": "v1.7.0",
+		"downloadSrc":  "github",
+		"ttlSeconds":   900,
+	})
+	genReq := httptest.NewRequest(http.MethodPost,
+		"/api/nodes/"+formatUint(batchResp.Data[0].ID)+"/install-tokens", bytes.NewBuffer(genBody))
+	genReq.Header.Set("Content-Type", "application/json")
+	genReq.Header.Set("Authorization", "Bearer "+jwt)
+	genRec := httptest.NewRecorder()
+	router.ServeHTTP(genRec, genReq)
+	if genRec.Code != 200 {
+		t.Fatalf("install-tokens failed: %d %s", genRec.Code, genRec.Body.String())
+	}
+	var genResp struct {
+		Data struct {
+			InstallToken string `json:"installToken"`
+		} `json:"data"`
+	}
+	if err := json.Unmarshal(genRec.Body.Bytes(), &genResp); err != nil {
+		t.Fatalf("unmarshal gen: %v", err)
+	}
+	if genResp.Data.InstallToken == "" {
+		t.Fatalf("missing installToken")
+	}
+
+	composeReq := httptest.NewRequest(http.MethodGet, "/api/install/"+genResp.Data.InstallToken+"/compose.yml", nil)
+	composeRec := httptest.NewRecorder()
+	router.ServeHTTP(composeRec, composeReq)
+	if composeRec.Code != 200 {
+		t.Fatalf("compose fetch failed: %d %s", composeRec.Code, composeRec.Body.String())
+	}
+	if !strings.Contains(composeRec.Body.String(), "BACKUPX_AGENT_TOKEN") {
+		t.Fatalf("compose missing token env:\n%s", composeRec.Body.String())
+	}
+
+	scriptReq := httptest.NewRequest(http.MethodGet, "/api/install/"+genResp.Data.InstallToken, nil)
+	scriptRec := httptest.NewRecorder()
+	router.ServeHTTP(scriptRec, scriptReq)
+	if scriptRec.Code != http.StatusGone {
+		t.Fatalf("script after compose should be 410, got %d: %s", scriptRec.Code, scriptRec.Body.String())
+	}
+}
+
+// formatUint 小工具：uint → 十进制字符串（无需引入 strconv）。
+func formatUint(u uint) string {
+	if u == 0 {
+		return "0"
+	}
+	var buf [20]byte
+	i := len(buf)
+	for u > 0 {
+		i--
+		buf[i] = byte('0' + u%10)
+		u /= 10
+	}
+	return string(buf[i:])
+}
--- a/server/internal/http/install_handler.go
+++ b/server/internal/http/install_handler.go
@@ -0,0 +1,235 @@
+package http
+
+import (
+	"context"
+	stdhttp "net/http"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"backupx/server/internal/installscript"
+	"backupx/server/internal/model"
+	"backupx/server/internal/service"
+	"github.com/gin-gonic/gin"
+)
+
+// InstallHandler 公开路由（不走 JWT 中间件）：/install/:token 与 /install/:token/compose.yml。
+type InstallHandler struct {
+	tokenService *service.InstallTokenService
+	auditService *service.AuditService
+	externalURL  string
+	limiter      *ipLimiter
+}
+
+// NewInstallHandler 构造 handler 并启动限流器的后台 GC 协程。
+// gcCtx 控制 GC 协程生命周期，建议传入 app context。
+func NewInstallHandler(gcCtx context.Context, tokenService *service.InstallTokenService, auditService *service.AuditService, externalURL string) *InstallHandler {
+	limiter := newIPLimiter(20, time.Minute)
+	limiter.startGC(gcCtx)
+	return &InstallHandler{
+		tokenService: tokenService,
+		auditService: auditService,
+		externalURL:  externalURL,
+		limiter:      limiter,
+	}
+}
+
+// Script 消费 install token 并返回 shell 脚本；Mode 由 token 存储决定（systemd/docker/foreground 均返回 shell）。
+//
+// 响应头策略（issue #46 教训）：
+//   - Content-Type 用 text/plain 而非 text/x-shellscript：避免 Cloudflare/反向代理把
+//     脚本内容按特殊类型识别并触发 minify/HTML rewrite，导致 `curl | sh` 收到非脚本内容
+//   - X-Content-Type-Options: nosniff：禁止浏览器/中间层按内容嗅探改写 MIME
+//   - Cache-Control: no-store：token 一次性消费，禁止任何缓存层留存旧脚本
+//   - Content-Disposition: inline; filename=...：部分代理会跳过带文件名的响应
+func (h *InstallHandler) Script(c *gin.Context) {
+	if !h.limiter.allow(c.ClientIP()) {
+		c.String(stdhttp.StatusTooManyRequests, "请求过于频繁，请稍后再试\n")
+		return
+	}
+	token := strings.TrimSpace(c.Param("token"))
+	consumed, err := h.tokenService.Consume(c.Request.Context(), token)
+	if err != nil {
+		c.String(stdhttp.StatusInternalServerError, "server error\n")
+		return
+	}
+	if consumed == nil {
+		c.String(stdhttp.StatusGone, "install token 不存在、已过期或已消费\n")
+		return
+	}
+	h.recordConsumeAudit(c, consumed, "script")
+	script, err := renderInstallScript(resolveMasterURL(c, h.externalURL), consumed.Node, consumed.Record)
+	if err != nil {
+		c.String(stdhttp.StatusInternalServerError, "render error\n")
+		return
+	}
+	c.Header("X-Content-Type-Options", "nosniff")
+	c.Header("Cache-Control", "no-store")
+	c.Header("Content-Disposition", `inline; filename="backupx-agent-install.sh"`)
+	c.Data(stdhttp.StatusOK, "text/plain; charset=utf-8", []byte(script))
+}
+
+// Compose 消费 install token 并返回 docker-compose YAML，仅 Mode=docker 有效。
+// 注意：/install/:token 与 /install/:token/compose.yml 共享同一 token 的消费状态，任一首次命中即消费。
+func (h *InstallHandler) Compose(c *gin.Context) {
+	if !h.limiter.allow(c.ClientIP()) {
+		c.String(stdhttp.StatusTooManyRequests, "请求过于频繁，请稍后再试\n")
+		return
+	}
+	token := strings.TrimSpace(c.Param("token"))
+	// 先 Peek 看 Mode（不消费），若非 docker 直接 400
+	record, err := h.tokenService.Peek(c.Request.Context(), token)
+	if err != nil {
+		c.String(stdhttp.StatusInternalServerError, "server error\n")
+		return
+	}
+	if record == nil {
+		c.String(stdhttp.StatusGone, "install token 不存在\n")
+		return
+	}
+	if record.Mode != model.InstallModeDocker {
+		c.String(stdhttp.StatusBadRequest, "该 install token 的模式不是 docker\n")
+		return
+	}
+	// 消费
+	consumed, err := h.tokenService.Consume(c.Request.Context(), token)
+	if err != nil {
+		c.String(stdhttp.StatusInternalServerError, "server error\n")
+		return
+	}
+	if consumed == nil {
+		c.String(stdhttp.StatusGone, "install token 已过期或已消费\n")
+		return
+	}
+	h.recordConsumeAudit(c, consumed, "compose")
+	yaml, err := installscript.RenderComposeYaml(installscript.Context{
+		MasterURL:    resolveMasterURL(c, h.externalURL),
+		AgentToken:   consumed.Node.Token,
+		AgentVersion: consumed.Record.AgentVer,
+		Mode:         model.InstallModeDocker,
+		NodeID:       consumed.Node.ID,
+	})
+	if err != nil {
+		c.String(stdhttp.StatusInternalServerError, "render error\n")
+		return
+	}
+	c.Data(stdhttp.StatusOK, "text/yaml; charset=utf-8", []byte(yaml))
+}
+
+func (h *InstallHandler) recordConsumeAudit(c *gin.Context, consumed *service.ConsumedInstallToken, kind string) {
+	if h.auditService == nil {
+		return
+	}
+	h.auditService.Record(service.AuditEntry{
+		Category:   "install_token",
+		Action:     "consume",
+		TargetType: "node",
+		TargetID:   strconv.FormatUint(uint64(consumed.Node.ID), 10),
+		TargetName: consumed.Node.Name,
+		Detail:     "install token 消费 (" + kind + ")",
+		ClientIP:   c.ClientIP(),
+	})
+}
+
+func renderInstallScript(masterURL string, node *model.Node, record *model.AgentInstallToken) (string, error) {
+	return installscript.RenderScript(installscript.Context{
+		MasterURL:     masterURL,
+		AgentToken:    node.Token,
+		AgentVersion:  record.AgentVer,
+		Mode:          record.Mode,
+		Arch:          record.Arch,
+		DownloadBase:  installscript.DownloadBaseFor(record.DownloadSrc),
+		InstallPrefix: "/opt/backupx-agent",
+		NodeID:        node.ID,
+	})
+}
+
+// resolveMasterURL 按优先级推导 Master URL：外部配置 > X-Forwarded-* > Request.Host。
+// 此为包级 helper，供 install_handler 和 node_handler 共用。
+func resolveMasterURL(c *gin.Context, externalURL string) string {
+	if strings.TrimSpace(externalURL) != "" {
+		return strings.TrimRight(externalURL, "/")
+	}
+	scheme := strings.TrimSpace(c.GetHeader("X-Forwarded-Proto"))
+	if scheme == "" {
+		if c.Request.TLS != nil {
+			scheme = "https"
+		} else {
+			scheme = "http"
+		}
+	}
+	host := strings.TrimSpace(c.GetHeader("X-Forwarded-Host"))
+	if host == "" {
+		host = c.Request.Host
+	}
+	return scheme + "://" + host
+}
+
+// ipLimiter 简单内存滑动窗口限流，按 client IP 维度。
+type ipLimiter struct {
+	mu     sync.Mutex
+	events map[string][]time.Time
+	limit  int
+	window time.Duration
+}
+
+func newIPLimiter(limit int, window time.Duration) *ipLimiter {
+	return &ipLimiter{events: make(map[string][]time.Time), limit: limit, window: window}
+}
+
+func (l *ipLimiter) allow(ip string) bool {
+	l.mu.Lock()
+	defer l.mu.Unlock()
+	now := time.Now()
+	cutoff := now.Add(-l.window)
+	keep := l.events[ip][:0]
+	for _, t := range l.events[ip] {
+		if t.After(cutoff) {
+			keep = append(keep, t)
+		}
+	}
+	if len(keep) >= l.limit {
+		l.events[ip] = keep
+		return false
+	}
+	l.events[ip] = append(keep, now)
+	return true
+}
+
+// gc 清理窗口外所有过期的 IP 条目，防止公网扫描导致 map 无界增长。
+// 由后台 goroutine 周期性调用。
+func (l *ipLimiter) gc(now time.Time) {
+	l.mu.Lock()
+	defer l.mu.Unlock()
+	cutoff := now.Add(-l.window)
+	for k, v := range l.events {
+		stale := true
+		for _, t := range v {
+			if t.After(cutoff) {
+				stale = false
+				break
+			}
+		}
+		if stale {
+			delete(l.events, k)
+		}
+	}
+}
+
+// startGC 启动后台清理协程，每 window 周期清扫一次 map。
+// ctx 取消时协程退出。
+func (l *ipLimiter) startGC(ctx context.Context) {
+	go func() {
+		ticker := time.NewTicker(l.window)
+		defer ticker.Stop()
+		for {
+			select {
+			case <-ctx.Done():
+				return
+			case t := <-ticker.C:
+				l.gc(t)
+			}
+		}
+	}()
+}
--- a/server/internal/http/middleware.go
+++ b/server/internal/http/middleware.go
@@ -1,6 +1,7 @@
 package http

 import (
+	"context"
 	stdhttp "net/http"
 	"strings"

@@ -26,28 +27,94 @@ func CORSMiddleware() gin.HandlerFunc {
 	}
 }

-func AuthMiddleware(jwtManager *security.JWTManager) gin.HandlerFunc {
+// ApiKeyAuthenticator 抽象 API Key 验证能力，避免 middleware 直接依赖 service 包。
+// 实现方：service.ApiKeyService。未注入时 AuthMiddleware 仍然支持 JWT。
+type ApiKeyAuthenticator interface {
+	Authenticate(ctx context.Context, rawKey string) (subject string, role string, err error)
+}
+
+// AuthMiddleware 支持两种认证方式：
+//   - JWT (Authorization: Bearer <jwt>)：交互式用户
+//   - API Key (Authorization: Bearer bax_xxx 或 X-Api-Key: bax_xxx)：第三方脚本
+//
+// JWT 会在 context 中写入 userSubject / userRole / username；
+// API Key 会写入 authSubject=api_key:<id> / userRole=<key role>。
+func AuthMiddleware(jwtManager *security.JWTManager, apiKeyAuth ApiKeyAuthenticator) gin.HandlerFunc {
 	return func(c *gin.Context) {
-		header := strings.TrimSpace(c.GetHeader("Authorization"))
-		if !strings.HasPrefix(header, "Bearer ") {
+		rawToken := extractAuthToken(c)
+		if rawToken == "" {
 			response.Error(c, apperror.Unauthorized("AUTH_REQUIRED", "请先登录", nil))
 			c.Abort()
 			return
 		}
-
-		tokenString := strings.TrimSpace(strings.TrimPrefix(header, "Bearer "))
-		claims, err := jwtManager.Parse(tokenString)
+		if apiKeyAuth != nil && strings.HasPrefix(rawToken, "bax_") {
+			subject, role, err := apiKeyAuth.Authenticate(c.Request.Context(), rawToken)
+			if err != nil {
+				response.Error(c, err)
+				c.Abort()
+				return
+			}
+			c.Set(contextAuthSubjectKey, subject)
+			c.Set(contextUserRoleKey, role)
+			c.Set(contextUserSubjectKey, subject)
+			c.Set(contextUsernameKey, subject)
+			c.Next()
+			return
+		}
+		claims, err := jwtManager.Parse(rawToken)
 		if err != nil {
 			response.Error(c, apperror.Unauthorized("AUTH_INVALID_TOKEN", "登录状态已失效，请重新登录", err))
 			c.Abort()
 			return
 		}
-
 		c.Set(contextUserSubjectKey, claims.Subject)
+		c.Set(contextUserRoleKey, claims.Role)
+		c.Set(contextUsernameKey, claims.Username)
+		c.Set(contextAuthSubjectKey, "user:"+claims.Subject)
 		c.Next()
 	}
 }

+// extractAuthToken 从 Authorization: Bearer 或 X-Api-Key 中提取原始 token。
+func extractAuthToken(c *gin.Context) string {
+	header := strings.TrimSpace(c.GetHeader("Authorization"))
+	if strings.HasPrefix(header, "Bearer ") {
+		return strings.TrimSpace(strings.TrimPrefix(header, "Bearer "))
+	}
+	if key := strings.TrimSpace(c.GetHeader("X-Api-Key")); key != "" {
+		return key
+	}
+	return ""
+}
+
+// RequireRole 仅放行指定角色，否则返回 403。
+// 必须用在 AuthMiddleware 之后。viewer 只读保护、admin 管理端都靠它。
+func RequireRole(roles ...string) gin.HandlerFunc {
+	allowed := make(map[string]bool, len(roles))
+	for _, r := range roles {
+		allowed[strings.ToLower(r)] = true
+	}
+	return func(c *gin.Context) {
+		role, _ := c.Get(contextUserRoleKey)
+		roleStr := ""
+		if v, ok := role.(string); ok {
+			roleStr = strings.ToLower(v)
+		}
+		if !allowed[roleStr] {
+			response.Error(c, apperror.New(403, "AUTH_FORBIDDEN", "当前角色无权执行此操作", nil))
+			c.Abort()
+			return
+		}
+		c.Next()
+	}
+}
+
+// RequireNotViewer 是 RequireRole(admin, operator) 的快捷方式，
+// 用于任何"写入/变更"类端点，禁止 viewer 触发。
+func RequireNotViewer() gin.HandlerFunc {
+	return RequireRole("admin", "operator")
+}
+
 func ClientKey(c *gin.Context) string {
 	ip := strings.TrimSpace(c.ClientIP())
 	if ip == "" {
--- a/server/internal/http/node_handler.go
+++ b/server/internal/http/node_handler.go
@@ -5,18 +5,59 @@ import (
 	stdhttp "net/http"
 	"strconv"

+	"backupx/server/internal/apperror"
+	"backupx/server/internal/installscript"
+	"backupx/server/internal/repository"
 	"backupx/server/internal/service"
 	"backupx/server/pkg/response"
 	"github.com/gin-gonic/gin"
 )

 type NodeHandler struct {
-	service      *service.NodeService
-	auditService *service.AuditService
+	service         *service.NodeService
+	auditService    *service.AuditService
+	installTokenSvc *service.InstallTokenService
+	userRepo        repository.UserRepository
+	externalURL     string
 }

-func NewNodeHandler(service *service.NodeService, auditService *service.AuditService) *NodeHandler {
-	return &NodeHandler{service: service, auditService: auditService}
+// NewNodeHandler 构造 handler。
+// userRepo 用于把 JWT subject（用户名）解析为 user.ID，填入 install_token.created_by_id 做审计追溯；
+// 传 nil 时 created_by_id 记为 0（仍可用，不阻断）。
+func NewNodeHandler(
+	nodeService *service.NodeService,
+	auditService *service.AuditService,
+	installTokenSvc *service.InstallTokenService,
+	userRepo repository.UserRepository,
+	externalURL string,
+) *NodeHandler {
+	return &NodeHandler{
+		service:         nodeService,
+		auditService:    auditService,
+		installTokenSvc: installTokenSvc,
+		userRepo:        userRepo,
+		externalURL:     externalURL,
+	}
+}
+
+// resolveCurrentUserID 从 JWT subject 解析出 user.ID，失败返回 0。
+func (h *NodeHandler) resolveCurrentUserID(c *gin.Context) uint {
+	if h.userRepo == nil {
+		return 0
+	}
+	subjectValue, ok := c.Get(contextUserSubjectKey)
+	if !ok {
+		return 0
+	}
+	subject, err := service.SubjectFromContextValue(subjectValue)
+	if err != nil || subject == "" {
+		return 0
+	}
+	user, err := h.userRepo.FindByUsername(c.Request.Context(), subject)
+	if err != nil || user == nil {
+		return 0
+	}
+	return user.ID
 }

 func (h *NodeHandler) List(c *gin.Context) {
@@ -128,3 +169,142 @@ func (h *NodeHandler) Heartbeat(c *gin.Context) {
 	}
 	response.Success(c, gin.H{"status": "ok"})
 }
+
+// BatchCreate 批量创建远程节点。
+func (h *NodeHandler) BatchCreate(c *gin.Context) {
+	var input struct {
+		Names []string `json:"names" binding:"required"`
+	}
+	if err := c.ShouldBindJSON(&input); err != nil {
+		c.JSON(stdhttp.StatusBadRequest, gin.H{"code": "INVALID_INPUT", "message": err.Error()})
+		return
+	}
+	results, err := h.service.BatchCreate(c.Request.Context(), input.Names)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	recordAudit(c, h.auditService, "node", "batch_create", "node", "",
+		fmt.Sprintf("%d", len(results)), fmt.Sprintf("批量创建 %d 个节点", len(results)))
+	response.Success(c, results)
+}
+
+// RotateToken 轮换节点的 agent token。
+func (h *NodeHandler) RotateToken(c *gin.Context) {
+	id, err := strconv.ParseUint(c.Param("id"), 10, 32)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	tok, err := h.service.RotateToken(c.Request.Context(), uint(id))
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	recordAudit(c, h.auditService, "node", "rotate_token", "node",
+		fmt.Sprintf("%d", id), "",
+		fmt.Sprintf("轮换节点 Token (ID: %d)", id))
+	response.Success(c, gin.H{"newToken": tok})
+}
+
+// CreateInstallToken 生成一次性安装令牌。
+func (h *NodeHandler) CreateInstallToken(c *gin.Context) {
+	if h.installTokenSvc == nil {
+		response.Error(c, apperror.New(stdhttp.StatusServiceUnavailable,
+			"INSTALL_TOKEN_DISABLED", "一键部署未启用", nil))
+		return
+	}
+	id, err := strconv.ParseUint(c.Param("id"), 10, 32)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	var input struct {
+		Mode         string `json:"mode"`
+		Arch         string `json:"arch"`
+		AgentVersion string `json:"agentVersion"`
+		DownloadSrc  string `json:"downloadSrc"`
+		TTLSeconds   int    `json:"ttlSeconds"`
+	}
+	if err := c.ShouldBindJSON(&input); err != nil {
+		c.JSON(stdhttp.StatusBadRequest, gin.H{"code": "INVALID_INPUT", "message": err.Error()})
+		return
+	}
+	// 默认值
+	if input.Mode == "" {
+		input.Mode = "systemd"
+	}
+	if input.Arch == "" {
+		input.Arch = "auto"
+	}
+	if input.DownloadSrc == "" {
+		input.DownloadSrc = "github"
+	}
+	if input.TTLSeconds == 0 {
+		input.TTLSeconds = 900
+	}
+
+	out, err := h.installTokenSvc.CreateCommand(c.Request.Context(), service.InstallCommandInput{
+		InstallTokenInput: service.InstallTokenInput{
+			NodeID:       uint(id),
+			Mode:         input.Mode,
+			Arch:         input.Arch,
+			AgentVersion: input.AgentVersion,
+			DownloadSrc:  input.DownloadSrc,
+			TTLSeconds:   input.TTLSeconds,
+			CreatedByID:  h.resolveCurrentUserID(c),
+		},
+		MasterURL: resolveMasterURL(c, h.externalURL),
+	})
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	recordAudit(c, h.auditService, "install_token", "create", "node",
+		fmt.Sprintf("%d", id), out.Node.Name,
+		fmt.Sprintf("生成 %s/%s install token TTL=%ds", input.Mode, input.Arch, input.TTLSeconds))
+
+	// 使用 /api/install/... 而非 /install/... —— 让反向代理的 /api/ 转发规则
+	// 自动接管，避免 SPA fallback 把请求当成前端路由返回 index.html（issue #46）。
+	// 同时返回 /install/... 备用地址，兼容会剥离 /api 前缀的外层反向代理。
+	// scriptBase64 让前端可以生成不依赖公开下载路径的嵌入式命令，解决 Lucky 等代理
+	// 把 /api/install/* 也 fallback 到 index.html 的场景。
+	body := gin.H{
+		"installToken":       out.Token,
+		"expiresAt":          out.ExpiresAt,
+		"url":                out.URL,
+		"fallbackUrl":        out.FallbackURL,
+		"scriptBase64":       out.ScriptBase64,
+		"composeUrl":         out.ComposeURL,
+		"fallbackComposeUrl": out.FallbackComposeURL,
+	}
+	response.Success(c, body)
+}
+
+// PreviewScript 预览安装脚本（token 字段用 <AGENT_TOKEN> 占位，不消费 install token）。
+// 用于 UI Step 3 展开"脚本预览"。
+func (h *NodeHandler) PreviewScript(c *gin.Context) {
+	mode := c.DefaultQuery("mode", "systemd")
+	arch := c.DefaultQuery("arch", "auto")
+	ver := c.Query("agentVersion")
+	if ver == "" {
+		c.JSON(stdhttp.StatusBadRequest, gin.H{"code": "INVALID_INPUT", "message": "agentVersion required"})
+		return
+	}
+	src := c.DefaultQuery("downloadSrc", "github")
+	ctx := installscript.Context{
+		MasterURL:     resolveMasterURL(c, h.externalURL),
+		AgentToken:    "<AGENT_TOKEN>",
+		AgentVersion:  ver,
+		Mode:          mode,
+		Arch:          arch,
+		DownloadBase:  installscript.DownloadBaseFor(src),
+		InstallPrefix: "/opt/backupx-agent",
+	}
+	script, err := installscript.RenderScript(ctx)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	c.Data(stdhttp.StatusOK, "text/x-shellscript; charset=utf-8", []byte(script))
+}
--- a/server/internal/http/replication_handler.go
+++ b/server/internal/http/replication_handler.go
@@ -0,0 +1,128 @@
+package http
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+	"time"
+
+	"backupx/server/internal/apperror"
+	"backupx/server/internal/service"
+	"backupx/server/pkg/response"
+
+	"github.com/gin-gonic/gin"
+)
+
+// ReplicationHandler 管理备份复制记录列表 + 手动触发。
+type ReplicationHandler struct {
+	service      *service.ReplicationService
+	auditService *service.AuditService
+}
+
+func NewReplicationHandler(replicationService *service.ReplicationService, auditService *service.AuditService) *ReplicationHandler {
+	return &ReplicationHandler{service: replicationService, auditService: auditService}
+}
+
+// TriggerByRecord 手动触发：从备份记录复制到指定目标存储。
+// Body: {"destTargetId": 12}
+func (h *ReplicationHandler) TriggerByRecord(c *gin.Context) {
+	recordID, ok := parseUintParam(c, "id")
+	if !ok {
+		return
+	}
+	var input struct {
+		DestTargetID uint `json:"destTargetId" binding:"required,min=1"`
+	}
+	if err := c.ShouldBindJSON(&input); err != nil {
+		response.Error(c, apperror.BadRequest("REPLICATION_INVALID", "复制参数不合法", err))
+		return
+	}
+	triggeredBy := ""
+	if subject, exists := c.Get(contextUsernameKey); exists {
+		if v, ok := subject.(string); ok {
+			triggeredBy = v
+		}
+	}
+	if triggeredBy == "" {
+		triggeredBy = "manual"
+	}
+	result, err := h.service.Start(c.Request.Context(), recordID, input.DestTargetID, triggeredBy)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	recordAudit(c, h.auditService, "replication", "manual_run", "backup_record", fmt.Sprintf("%d", recordID), "",
+		fmt.Sprintf("手动触发复制（备份记录 #%d → 存储 #%d, 复制记录 #%d）", recordID, input.DestTargetID, result.ID))
+	response.Success(c, result)
+}
+
+func (h *ReplicationHandler) List(c *gin.Context) {
+	filter, err := buildReplicationFilter(c)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	items, err := h.service.List(c.Request.Context(), filter)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, items)
+}
+
+func (h *ReplicationHandler) Get(c *gin.Context) {
+	id, ok := parseUintParam(c, "id")
+	if !ok {
+		return
+	}
+	item, err := h.service.Get(c.Request.Context(), id)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, item)
+}
+
+func buildReplicationFilter(c *gin.Context) (service.ReplicationRecordListInput, error) {
+	var filter service.ReplicationRecordListInput
+	if v := strings.TrimSpace(c.Query("taskId")); v != "" {
+		parsed, err := strconv.ParseUint(v, 10, 32)
+		if err != nil {
+			return filter, apperror.BadRequest("REPLICATION_FILTER_INVALID", "taskId 不合法", err)
+		}
+		id := uint(parsed)
+		filter.TaskID = &id
+	}
+	if v := strings.TrimSpace(c.Query("backupRecordId")); v != "" {
+		parsed, err := strconv.ParseUint(v, 10, 32)
+		if err != nil {
+			return filter, apperror.BadRequest("REPLICATION_FILTER_INVALID", "backupRecordId 不合法", err)
+		}
+		id := uint(parsed)
+		filter.BackupRecordID = &id
+	}
+	if v := strings.TrimSpace(c.Query("destTargetId")); v != "" {
+		parsed, err := strconv.ParseUint(v, 10, 32)
+		if err != nil {
+			return filter, apperror.BadRequest("REPLICATION_FILTER_INVALID", "destTargetId 不合法", err)
+		}
+		id := uint(parsed)
+		filter.DestTargetID = &id
+	}
+	filter.Status = strings.TrimSpace(c.Query("status"))
+	if v := strings.TrimSpace(c.Query("dateFrom")); v != "" {
+		parsed, err := time.Parse(time.RFC3339, v)
+		if err != nil {
+			return filter, apperror.BadRequest("REPLICATION_FILTER_INVALID", "dateFrom 必须为 RFC3339", err)
+		}
+		filter.DateFrom = &parsed
+	}
+	if v := strings.TrimSpace(c.Query("dateTo")); v != "" {
+		parsed, err := time.Parse(time.RFC3339, v)
+		if err != nil {
+			return filter, apperror.BadRequest("REPLICATION_FILTER_INVALID", "dateTo 必须为 RFC3339", err)
+		}
+		filter.DateTo = &parsed
+	}
+	return filter, nil
+}
--- a/server/internal/http/report_handler.go
+++ b/server/internal/http/report_handler.go
@@ -0,0 +1,95 @@
+package http
+
+import (
+	"encoding/csv"
+	"fmt"
+	"strconv"
+	"strings"
+	"time"
+
+	"backupx/server/internal/service"
+	"backupx/server/pkg/response"
+	"github.com/gin-gonic/gin"
+)
+
+type ReportHandler struct {
+	service *service.ReportService
+}
+
+func NewReportHandler(reportService *service.ReportService) *ReportHandler {
+	return &ReportHandler{service: reportService}
+}
+
+func reportDays(c *gin.Context) int {
+	days := 30
+	if v := strings.TrimSpace(c.Query("days")); v != "" {
+		if parsed, err := strconv.Atoi(v); err == nil && parsed > 0 {
+			days = parsed
+		}
+	}
+	return days
+}
+
+// Compliance 返回 JSON 合规报表（按任务的备份合规证据 + 汇总）。
+func (h *ReportHandler) Compliance(c *gin.Context) {
+	payload, err := h.service.ComplianceReport(c.Request.Context(), reportDays(c))
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, payload)
+}
+
+// ComplianceCSV 把合规报表导出为 CSV（供审计归档）。带 UTF-8 BOM 以便 Excel 正确识别中文。
+func (h *ReportHandler) ComplianceCSV(c *gin.Context) {
+	report, err := h.service.ComplianceReport(c.Request.Context(), reportDays(c))
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	filename := fmt.Sprintf("backupx-compliance-%s.csv", report.GeneratedAt.Format("20060102-150405"))
+	c.Header("Content-Type", "text/csv; charset=utf-8")
+	c.Header("Content-Disposition", "attachment; filename="+filename)
+	_, _ = c.Writer.WriteString("\ufeff") // UTF-8 BOM
+	w := csv.NewWriter(c.Writer)
+	_ = w.Write([]string{
+		"任务ID", "任务名", "类型", "启用", "节点", "加密", "保留天数", "SLA(RPO小时)",
+		"周期内运行", "成功", "失败", "成功率", "最近状态", "最近运行(UTC)", "最近成功(UTC)", "保护字节数", "合规判定",
+	})
+	for _, row := range report.Tasks {
+		_ = w.Write([]string{
+			strconv.FormatUint(uint64(row.TaskID), 10),
+			row.TaskName,
+			row.Type,
+			boolCN(row.Enabled),
+			row.NodeName,
+			boolCN(row.Encrypted),
+			strconv.Itoa(row.RetentionDays),
+			strconv.Itoa(row.SLAHoursRPO),
+			strconv.Itoa(row.TotalRuns),
+			strconv.Itoa(row.Successes),
+			strconv.Itoa(row.Failures),
+			fmt.Sprintf("%.2f%%", row.SuccessRate*100),
+			row.LastStatus,
+			fmtTimePtr(row.LastRunAt),
+			fmtTimePtr(row.LastSuccessAt),
+			strconv.FormatInt(row.ProtectedBytes, 10),
+			row.Risk,
+		})
+	}
+	w.Flush()
+}
+
+func boolCN(b bool) string {
+	if b {
+		return "是"
+	}
+	return "否"
+}
+
+func fmtTimePtr(t *time.Time) string {
+	if t == nil {
+		return ""
+	}
+	return t.UTC().Format("2006-01-02 15:04:05")
+}
--- a/server/internal/http/restore_record_handler.go
+++ b/server/internal/http/restore_record_handler.go
@@ -0,0 +1,162 @@
+package http
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"strconv"
+	"strings"
+	"time"
+
+	"backupx/server/internal/apperror"
+	"backupx/server/internal/backup"
+	"backupx/server/internal/service"
+	"backupx/server/pkg/response"
+
+	"github.com/gin-gonic/gin"
+)
+
+// RestoreRecordHandler 提供恢复记录列表/详情/实时日志端点。
+// 创建恢复由 BackupRecordHandler.Restore 代理到 RestoreService.Start。
+type RestoreRecordHandler struct {
+	service      *service.RestoreService
+	auditService *service.AuditService
+}
+
+func NewRestoreRecordHandler(restoreService *service.RestoreService, auditService *service.AuditService) *RestoreRecordHandler {
+	return &RestoreRecordHandler{service: restoreService, auditService: auditService}
+}
+
+func (h *RestoreRecordHandler) List(c *gin.Context) {
+	filter, err := buildRestoreFilter(c)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	items, err := h.service.List(c.Request.Context(), filter)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, items)
+}
+
+func (h *RestoreRecordHandler) Get(c *gin.Context) {
+	id, ok := parseUintParam(c, "id")
+	if !ok {
+		return
+	}
+	item, err := h.service.Get(c.Request.Context(), id)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, item)
+}
+
+func (h *RestoreRecordHandler) StreamLogs(c *gin.Context) {
+	id, ok := parseUintParam(c, "id")
+	if !ok {
+		return
+	}
+	detail, err := h.service.Get(c.Request.Context(), id)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	events := detail.LogEvents
+	completed := detail.Status != "running"
+	channel, cancel, err := h.service.SubscribeLogs(c.Request.Context(), id, 64)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	defer cancel()
+	c.Writer.Header().Set("Content-Type", "text/event-stream")
+	c.Writer.Header().Set("Cache-Control", "no-cache")
+	c.Writer.Header().Set("Connection", "keep-alive")
+	flusher, ok := c.Writer.(interface{ Flush() })
+	if !ok {
+		response.Error(c, apperror.Internal("RESTORE_STREAM_UNSUPPORTED", "当前连接不支持日志流", nil))
+		return
+	}
+	for _, event := range events {
+		if err := writeRestoreSSEEvent(c.Writer, event); err != nil {
+			return
+		}
+		flusher.Flush()
+	}
+	if completed {
+		return
+	}
+	for {
+		select {
+		case <-c.Request.Context().Done():
+			return
+		case event, ok := <-channel:
+			if !ok {
+				return
+			}
+			if err := writeRestoreSSEEvent(c.Writer, event); err != nil {
+				return
+			}
+			flusher.Flush()
+			if event.Completed {
+				return
+			}
+		}
+	}
+}
+
+func buildRestoreFilter(c *gin.Context) (service.RestoreRecordListInput, error) {
+	var filter service.RestoreRecordListInput
+	if taskIDValue := strings.TrimSpace(c.Query("taskId")); taskIDValue != "" {
+		parsed, err := strconv.ParseUint(taskIDValue, 10, 32)
+		if err != nil {
+			return filter, apperror.BadRequest("RESTORE_RECORD_FILTER_INVALID", "taskId 不合法", err)
+		}
+		v := uint(parsed)
+		filter.TaskID = &v
+	}
+	if backupValue := strings.TrimSpace(c.Query("backupRecordId")); backupValue != "" {
+		parsed, err := strconv.ParseUint(backupValue, 10, 32)
+		if err != nil {
+			return filter, apperror.BadRequest("RESTORE_RECORD_FILTER_INVALID", "backupRecordId 不合法", err)
+		}
+		v := uint(parsed)
+		filter.BackupRecordID = &v
+	}
+	if nodeValue := strings.TrimSpace(c.Query("nodeId")); nodeValue != "" {
+		parsed, err := strconv.ParseUint(nodeValue, 10, 32)
+		if err != nil {
+			return filter, apperror.BadRequest("RESTORE_RECORD_FILTER_INVALID", "nodeId 不合法", err)
+		}
+		v := uint(parsed)
+		filter.NodeID = &v
+	}
+	filter.Status = strings.TrimSpace(c.Query("status"))
+	if dateFrom := strings.TrimSpace(c.Query("dateFrom")); dateFrom != "" {
+		parsed, err := time.Parse(time.RFC3339, dateFrom)
+		if err != nil {
+			return filter, apperror.BadRequest("RESTORE_RECORD_FILTER_INVALID", "dateFrom 必须为 RFC3339 时间格式", err)
+		}
+		filter.DateFrom = &parsed
+	}
+	if dateTo := strings.TrimSpace(c.Query("dateTo")); dateTo != "" {
+		parsed, err := time.Parse(time.RFC3339, dateTo)
+		if err != nil {
+			return filter, apperror.BadRequest("RESTORE_RECORD_FILTER_INVALID", "dateTo 必须为 RFC3339 时间格式", err)
+		}
+		filter.DateTo = &parsed
+	}
+	return filter, nil
+}
+
+func writeRestoreSSEEvent(writer io.Writer, event backup.LogEvent) error {
+	payload, err := json.Marshal(event)
+	if err != nil {
+		return err
+	}
+	_, err = fmt.Fprintf(writer, "event: log\ndata: %s\n\n", payload)
+	return err
+}
--- a/server/internal/http/router.go
+++ b/server/internal/http/router.go
@@ -1,20 +1,26 @@
 package http

 import (
+	"context"
 	"errors"
 	stdhttp "net/http"

 	"backupx/server/internal/apperror"
 	"backupx/server/internal/config"
+	"backupx/server/internal/metrics"
 	"backupx/server/internal/repository"
 	"backupx/server/internal/security"
 	"backupx/server/internal/service"
 	"backupx/server/pkg/response"
 	"github.com/gin-gonic/gin"
 	"go.uber.org/zap"
+	"gorm.io/gorm"
 )

 type RouterDependencies struct {
+	// Context 控制 handler 启动的后台协程（如 ipLimiter GC）的生命周期。
+	// app 应传入随进程退出可取消的 ctx；若为 nil 则退化为 context.Background()。
+	Context                  context.Context
 	Config                   config.Config
 	Version                  string
 	Logger                   *zap.Logger
@@ -24,8 +30,18 @@ type RouterDependencies struct {
 	BackupTaskService        *service.BackupTaskService
 	BackupExecutionService   *service.BackupExecutionService
 	BackupRecordService      *service.BackupRecordService
+	RestoreService           *service.RestoreService
+	VerificationService      *service.VerificationService
+	ReplicationService       *service.ReplicationService
+	TaskTemplateService      *service.TaskTemplateService
+	TaskExportService        *service.TaskExportService
+	SearchService            *service.SearchService
+	EventBroadcaster         *service.EventBroadcaster
+	UserService              *service.UserService
+	ApiKeyService            *service.ApiKeyService
 	NotificationService      *service.NotificationService
 	DashboardService         *service.DashboardService
+	ReportService            *service.ReportService
 	SettingsService          *service.SettingsService
 	NodeService              *service.NodeService
 	AgentService             *service.AgentService
@@ -34,6 +50,12 @@ type RouterDependencies struct {
 	JWTManager               *security.JWTManager
 	UserRepository           repository.UserRepository
 	SystemConfigRepo         repository.SystemConfigRepository
+	InstallTokenService      *service.InstallTokenService
+	MasterExternalURL        string
+	// DB 注入给健康检查端点做 liveness/readiness 探测。
+	DB *gorm.DB
+	// Metrics 注入给 /metrics 端点；为 nil 时端点返回 503。
+	Metrics *metrics.Metrics
 }

 func NewRouter(deps RouterDependencies) *gin.Engine {
@@ -48,7 +70,19 @@ func NewRouter(deps RouterDependencies) *gin.Engine {
 	storageTargetHandler := NewStorageTargetHandler(deps.StorageTargetService, deps.AuditService)
 	backupTaskHandler := NewBackupTaskHandler(deps.BackupTaskService, deps.AuditService)
 	backupRunHandler := NewBackupRunHandler(deps.BackupExecutionService, deps.AuditService)
-	backupRecordHandler := NewBackupRecordHandler(deps.BackupRecordService, deps.AuditService)
+	backupRecordHandler := NewBackupRecordHandler(deps.BackupRecordService, deps.RestoreService, deps.AuditService)
+	restoreRecordHandler := NewRestoreRecordHandler(deps.RestoreService, deps.AuditService)
+	verificationHandler := NewVerificationHandler(deps.VerificationService, deps.AuditService)
+	replicationHandler := NewReplicationHandler(deps.ReplicationService, deps.AuditService)
+	taskTemplateHandler := NewTaskTemplateHandler(deps.TaskTemplateService, deps.AuditService)
+	userHandler := NewUserHandler(deps.UserService, deps.AuditService)
+	apiKeyHandler := NewApiKeyHandler(deps.ApiKeyService, deps.AuditService)
+	// apiKeyAuth：给 AuthMiddleware 注入 API Key 验证能力。
+	// 为 nil 时中间件仅支持 JWT，不影响向后兼容。
+	var apiKeyAuth ApiKeyAuthenticator
+	if deps.ApiKeyService != nil {
+		apiKeyAuth = deps.ApiKeyService
+	}
 	notificationHandler := NewNotificationHandler(deps.NotificationService)
 	dashboardHandler := NewDashboardHandler(deps.DashboardService)
 	settingsHandler := NewSettingsHandler(deps.SettingsService, deps.AuditService)
@@ -61,114 +95,298 @@ func NewRouter(deps RouterDependencies) *gin.Engine {
 			auth.GET("/setup/status", authHandler.SetupStatus)
 			auth.POST("/setup", authHandler.Setup)
 			auth.POST("/login", authHandler.Login)
-			auth.POST("/logout", AuthMiddleware(deps.JWTManager), authHandler.Logout)
-			auth.GET("/profile", AuthMiddleware(deps.JWTManager), authHandler.Profile)
-			auth.PUT("/password", AuthMiddleware(deps.JWTManager), authHandler.ChangePassword)
+			auth.POST("/otp/send", authHandler.SendLoginOTP)
+			auth.POST("/webauthn/login/options", authHandler.BeginWebAuthnLogin)
+			auth.POST("/logout", AuthMiddleware(deps.JWTManager, apiKeyAuth), authHandler.Logout)
+			auth.GET("/profile", AuthMiddleware(deps.JWTManager, apiKeyAuth), authHandler.Profile)
+			auth.PUT("/password", AuthMiddleware(deps.JWTManager, apiKeyAuth), authHandler.ChangePassword)
+			auth.POST("/2fa/setup", AuthMiddleware(deps.JWTManager, apiKeyAuth), authHandler.PrepareTwoFactor)
+			auth.POST("/2fa/enable", AuthMiddleware(deps.JWTManager, apiKeyAuth), authHandler.EnableTwoFactor)
+			auth.POST("/2fa/recovery-codes", AuthMiddleware(deps.JWTManager, apiKeyAuth), authHandler.RegenerateRecoveryCodes)
+			auth.DELETE("/2fa", AuthMiddleware(deps.JWTManager, apiKeyAuth), authHandler.DisableTwoFactor)
+			auth.PUT("/otp/config", AuthMiddleware(deps.JWTManager, apiKeyAuth), authHandler.ConfigureOTP)
+			auth.POST("/webauthn/register/options", AuthMiddleware(deps.JWTManager, apiKeyAuth), authHandler.BeginWebAuthnRegistration)
+			auth.POST("/webauthn/register/finish", AuthMiddleware(deps.JWTManager, apiKeyAuth), authHandler.FinishWebAuthnRegistration)
+			auth.GET("/webauthn/credentials", AuthMiddleware(deps.JWTManager, apiKeyAuth), authHandler.ListWebAuthnCredentials)
+			auth.DELETE("/webauthn/credentials/:id", AuthMiddleware(deps.JWTManager, apiKeyAuth), authHandler.DeleteWebAuthnCredential)
+			auth.GET("/trusted-devices", AuthMiddleware(deps.JWTManager, apiKeyAuth), authHandler.ListTrustedDevices)
+			auth.DELETE("/trusted-devices/:id", AuthMiddleware(deps.JWTManager, apiKeyAuth), authHandler.RevokeTrustedDevice)
 		}

 		system := api.Group("/system")
-		system.Use(AuthMiddleware(deps.JWTManager))
+		system.Use(AuthMiddleware(deps.JWTManager, apiKeyAuth))
 		system.GET("/info", systemHandler.Info)
 		system.GET("/update-check", systemHandler.CheckUpdate)

 		storageTargets := api.Group("/storage-targets")
-		storageTargets.Use(AuthMiddleware(deps.JWTManager))
+		storageTargets.Use(AuthMiddleware(deps.JWTManager, apiKeyAuth))
 		// 静态路由必须在参数路由 /:id 之前注册，避免 Gin 路由冲突
 		storageTargets.GET("", storageTargetHandler.List)
-		storageTargets.POST("", storageTargetHandler.Create)
-		storageTargets.POST("/test", storageTargetHandler.TestConnection)
-		storageTargets.POST("/google-drive/auth-url", storageTargetHandler.StartGoogleDriveOAuth)
-		storageTargets.POST("/google-drive/complete", storageTargetHandler.CompleteGoogleDriveOAuth)
+		storageTargets.POST("", RequireNotViewer(), storageTargetHandler.Create)
+		storageTargets.POST("/test", RequireNotViewer(), storageTargetHandler.TestConnection)
+		storageTargets.POST("/google-drive/auth-url", RequireNotViewer(), storageTargetHandler.StartGoogleDriveOAuth)
+		storageTargets.POST("/google-drive/complete", RequireNotViewer(), storageTargetHandler.CompleteGoogleDriveOAuth)
 		storageTargets.GET("/google-drive/callback", storageTargetHandler.HandleGoogleDriveCallback)
 		rcloneHandler := NewRcloneHandler()
 		storageTargets.GET("/rclone/backends", rcloneHandler.ListBackends)
 		// 参数路由
 		storageTargets.GET("/:id", storageTargetHandler.Get)
-		storageTargets.PUT("/:id", storageTargetHandler.Update)
-		storageTargets.DELETE("/:id", storageTargetHandler.Delete)
-		storageTargets.PUT("/:id/star", storageTargetHandler.ToggleStar)
-		storageTargets.POST("/:id/test", storageTargetHandler.TestSavedConnection)
+		storageTargets.PUT("/:id", RequireNotViewer(), storageTargetHandler.Update)
+		storageTargets.DELETE("/:id", RequireNotViewer(), storageTargetHandler.Delete)
+		storageTargets.PUT("/:id/star", RequireNotViewer(), storageTargetHandler.ToggleStar)
+		storageTargets.POST("/:id/test", RequireNotViewer(), storageTargetHandler.TestSavedConnection)
 		storageTargets.GET("/:id/usage", storageTargetHandler.GetUsage)
 		storageTargets.GET("/:id/google-drive/profile", storageTargetHandler.GoogleDriveProfile)

 		backupTasks := api.Group("/backup/tasks")
-		backupTasks.Use(AuthMiddleware(deps.JWTManager))
+		backupTasks.Use(AuthMiddleware(deps.JWTManager, apiKeyAuth))
 		backupTasks.GET("", backupTaskHandler.List)
+		backupTasks.GET("/tags", backupTaskHandler.ListTags)
 		backupTasks.GET("/:id", backupTaskHandler.Get)
-		backupTasks.POST("", backupTaskHandler.Create)
-		backupTasks.PUT("/:id", backupTaskHandler.Update)
-		backupTasks.DELETE("/:id", backupTaskHandler.Delete)
-		backupTasks.PUT("/:id/toggle", backupTaskHandler.Toggle)
-		backupTasks.POST("/:id/run", backupRunHandler.Run)
+		backupTasks.POST("", RequireNotViewer(), backupTaskHandler.Create)
+		backupTasks.PUT("/:id", RequireNotViewer(), backupTaskHandler.Update)
+		backupTasks.DELETE("/:id", RequireNotViewer(), backupTaskHandler.Delete)
+		backupTasks.PUT("/:id/toggle", RequireNotViewer(), backupTaskHandler.Toggle)
+		backupTasks.POST("/:id/run", RequireNotViewer(), backupRunHandler.Run)
+		backupTasks.POST("/batch/toggle", RequireNotViewer(), backupTaskHandler.BatchToggle)
+		backupTasks.POST("/batch/delete", RequireNotViewer(), backupTaskHandler.BatchDelete)
+		backupTasks.POST("/batch/run", RequireNotViewer(), backupRunHandler.BatchRun)
+		// 任务配置导入/导出（集群迁移 & 灾备）
+		if deps.TaskExportService != nil {
+			taskExportHandler := NewTaskExportHandler(deps.TaskExportService, deps.AuditService)
+			backupTasks.GET("/export", taskExportHandler.Export)
+			backupTasks.POST("/import", RequireNotViewer(), taskExportHandler.Import)
+		}
+		if deps.VerificationService != nil {
+			backupTasks.POST("/:id/verify", RequireNotViewer(), verificationHandler.TriggerByTask)
+		}

 		backupRecords := api.Group("/backup/records")
-		backupRecords.Use(AuthMiddleware(deps.JWTManager))
+		backupRecords.Use(AuthMiddleware(deps.JWTManager, apiKeyAuth))
 		backupRecords.GET("", backupRecordHandler.List)
 		backupRecords.GET("/:id", backupRecordHandler.Get)
 		backupRecords.GET("/:id/logs/stream", backupRecordHandler.StreamLogs)
 		backupRecords.GET("/:id/download", backupRecordHandler.Download)
-		backupRecords.POST("/:id/restore", backupRecordHandler.Restore)
-		backupRecords.POST("/batch-delete", backupRecordHandler.BatchDelete)
-		backupRecords.DELETE("/:id", backupRecordHandler.Delete)
+		backupRecords.GET("/:id/contents", backupRecordHandler.Contents)
+		backupRecords.POST("/:id/restore", RequireNotViewer(), backupRecordHandler.Restore)
+		backupRecords.POST("/batch-delete", RequireNotViewer(), backupRecordHandler.BatchDelete)
+		backupRecords.DELETE("/:id", RequireNotViewer(), backupRecordHandler.Delete)
+		backupRecords.PUT("/:id/lock", RequireNotViewer(), backupRecordHandler.SetLock)
+
+		// 恢复记录独立命名空间：列表/详情/SSE 日志流。
+		// 创建恢复仍然走 POST /backup/records/:id/restore（以源备份记录为触发点）。
+		if deps.RestoreService != nil {
+			restoreRecords := api.Group("/restore/records")
+			restoreRecords.Use(AuthMiddleware(deps.JWTManager, apiKeyAuth))
+			restoreRecords.GET("", restoreRecordHandler.List)
+			restoreRecords.GET("/:id", restoreRecordHandler.Get)
+			restoreRecords.GET("/:id/logs/stream", restoreRecordHandler.StreamLogs)
+		}
+
+		// 备份复制记录（3-2-1 规则）
+		if deps.ReplicationService != nil {
+			replicationRecords := api.Group("/replication/records")
+			replicationRecords.Use(AuthMiddleware(deps.JWTManager, apiKeyAuth))
+			replicationRecords.GET("", replicationHandler.List)
+			replicationRecords.GET("/:id", replicationHandler.Get)
+			backupRecords.POST("/:id/replicate", RequireNotViewer(), replicationHandler.TriggerByRecord)
+		}
+
+		// 任务模板（批量创建）
+		if deps.TaskTemplateService != nil {
+			templates := api.Group("/task-templates")
+			templates.Use(AuthMiddleware(deps.JWTManager, apiKeyAuth))
+			templates.GET("", taskTemplateHandler.List)
+			templates.GET("/:id", taskTemplateHandler.Get)
+			templates.POST("", RequireNotViewer(), taskTemplateHandler.Create)
+			templates.PUT("/:id", RequireNotViewer(), taskTemplateHandler.Update)
+			templates.DELETE("/:id", RequireNotViewer(), taskTemplateHandler.Delete)
+			templates.POST("/:id/apply", RequireNotViewer(), taskTemplateHandler.Apply)
+		}
+
+		// 备份验证/演练记录
+		if deps.VerificationService != nil {
+			verifyRecords := api.Group("/verify/records")
+			verifyRecords.Use(AuthMiddleware(deps.JWTManager, apiKeyAuth))
+			verifyRecords.GET("", verificationHandler.List)
+			verifyRecords.GET("/:id", verificationHandler.Get)
+			verifyRecords.GET("/:id/logs/stream", verificationHandler.StreamLogs)
+			// 基于备份记录的验证入口：与 restore 对称
+			backupRecords.POST("/:id/verify", RequireNotViewer(), verificationHandler.TriggerByRecord)
+		}
+		// 企业合规报表：按任务的可导出备份合规证据（区别于 Dashboard 的实时聚合视图）。
+		if deps.ReportService != nil {
+			reportHandler := NewReportHandler(deps.ReportService)
+			reports := api.Group("/reports")
+			reports.Use(AuthMiddleware(deps.JWTManager, apiKeyAuth))
+			reports.GET("/compliance", reportHandler.Compliance)
+			reports.GET("/compliance/export", reportHandler.ComplianceCSV)
+		}
+
 		dashboard := api.Group("/dashboard")
-		dashboard.Use(AuthMiddleware(deps.JWTManager))
+		dashboard.Use(AuthMiddleware(deps.JWTManager, apiKeyAuth))
 		dashboard.GET("/stats", dashboardHandler.Stats)
 		dashboard.GET("/timeline", dashboardHandler.Timeline)
+		dashboard.GET("/sla", dashboardHandler.SLA)
+		dashboard.GET("/cluster", dashboardHandler.Cluster)
+		dashboard.GET("/breakdown", dashboardHandler.Breakdown)
+		dashboard.GET("/node-performance", dashboardHandler.NodePerformance)

 		notifications := api.Group("/notifications")
-		notifications.Use(AuthMiddleware(deps.JWTManager))
+		notifications.Use(AuthMiddleware(deps.JWTManager, apiKeyAuth))
 		notifications.GET("", notificationHandler.List)
 		notifications.GET("/:id", notificationHandler.Get)
-		notifications.POST("", notificationHandler.Create)
-		notifications.PUT("/:id", notificationHandler.Update)
-		notifications.DELETE("/:id", notificationHandler.Delete)
-		notifications.POST("/test", notificationHandler.Test)
-		notifications.POST("/:id/test", notificationHandler.TestSaved)
+		notifications.POST("", RequireNotViewer(), notificationHandler.Create)
+		notifications.PUT("/:id", RequireNotViewer(), notificationHandler.Update)
+		notifications.DELETE("/:id", RequireNotViewer(), notificationHandler.Delete)
+		notifications.POST("/test", RequireNotViewer(), notificationHandler.Test)
+		notifications.POST("/:id/test", RequireNotViewer(), notificationHandler.TestSaved)

 		settings := api.Group("/settings")
-		settings.Use(AuthMiddleware(deps.JWTManager))
+		settings.Use(AuthMiddleware(deps.JWTManager, apiKeyAuth))
 		settings.GET("", settingsHandler.Get)
-		settings.PUT("", settingsHandler.Update)
+		settings.PUT("", RequireRole("admin"), settingsHandler.Update)
+
+		// 用户管理（admin 专属）
+		if deps.UserService != nil {
+			users := api.Group("/users")
+			users.Use(AuthMiddleware(deps.JWTManager, apiKeyAuth), RequireRole("admin"))
+			users.GET("", userHandler.List)
+			users.POST("", userHandler.Create)
+			users.PUT("/:id", userHandler.Update)
+			users.POST("/:id/2fa/reset", userHandler.ResetTwoFactor)
+			users.DELETE("/:id", userHandler.Delete)
+		}
+
+		// API Key 管理（admin 专属）
+		if deps.ApiKeyService != nil {
+			apiKeys := api.Group("/api-keys")
+			apiKeys.Use(AuthMiddleware(deps.JWTManager, apiKeyAuth), RequireRole("admin"))
+			apiKeys.GET("", apiKeyHandler.List)
+			apiKeys.POST("", apiKeyHandler.Create)
+			apiKeys.PUT("/:id/toggle", apiKeyHandler.Toggle)
+			apiKeys.DELETE("/:id", apiKeyHandler.Revoke)
+		}

 		auditLogs := api.Group("/audit-logs")
-		auditLogs.Use(AuthMiddleware(deps.JWTManager))
+		auditLogs.Use(AuthMiddleware(deps.JWTManager, apiKeyAuth))
 		auditLogs.GET("", auditHandler.List)
+		auditLogs.GET("/export", auditHandler.Export)
+
+		// 实时事件 SSE 流（Dashboard 自刷新、桌面告警）
+		if deps.EventBroadcaster != nil {
+			eventsHandler := NewEventsHandler(deps.EventBroadcaster)
+			events := api.Group("/events")
+			events.Use(AuthMiddleware(deps.JWTManager, apiKeyAuth))
+			events.GET("/stream", eventsHandler.Stream)
+		}
+
+		// 全局搜索
+		if deps.SearchService != nil {
+			searchHandler := NewSearchHandler(deps.SearchService)
+			searchGroup := api.Group("/search")
+			searchGroup.Use(AuthMiddleware(deps.JWTManager, apiKeyAuth))
+			searchGroup.GET("", searchHandler.Search)
+		}

 		if deps.DatabaseDiscoveryService != nil {
 			databaseHandler := NewDatabaseHandler(deps.DatabaseDiscoveryService)
 			database := api.Group("/database")
-			database.Use(AuthMiddleware(deps.JWTManager))
+			database.Use(AuthMiddleware(deps.JWTManager, apiKeyAuth))
 			database.POST("/discover", databaseHandler.Discover)
 		}

-		nodeHandler := NewNodeHandler(deps.NodeService, deps.AuditService)
+		nodeHandler := NewNodeHandler(deps.NodeService, deps.AuditService, deps.InstallTokenService, deps.UserRepository, deps.MasterExternalURL)
 		nodes := api.Group("/nodes")
-		nodes.Use(AuthMiddleware(deps.JWTManager))
+		nodes.Use(AuthMiddleware(deps.JWTManager, apiKeyAuth))
 		nodes.GET("", nodeHandler.List)
 		nodes.GET("/:id", nodeHandler.Get)
-		nodes.POST("", nodeHandler.Create)
-		nodes.PUT("/:id", nodeHandler.Update)
-		nodes.DELETE("/:id", nodeHandler.Delete)
-		nodes.GET("/:id/fs/list", nodeHandler.ListDirectory)
+		nodes.POST("", RequireRole("admin"), nodeHandler.Create)
+		nodes.PUT("/:id", RequireRole("admin"), nodeHandler.Update)
+		nodes.DELETE("/:id", RequireRole("admin"), nodeHandler.Delete)
+		// 文件浏览会枚举节点文件系统目录（含 /etc、/root 等），属敏感读操作：
+		// 限制为非 viewer（admin/operator），与"创建备份任务需选源路径"的权限对齐，
+		// 避免只读 viewer 借此探查服务器目录结构。
+		nodes.GET("/:id/fs/list", RequireNotViewer(), nodeHandler.ListDirectory)
+		nodes.POST("/batch", RequireRole("admin"), nodeHandler.BatchCreate)
+		nodes.POST("/:id/install-tokens", RequireRole("admin"), nodeHandler.CreateInstallToken)
+		nodes.POST("/:id/rotate-token", RequireRole("admin"), nodeHandler.RotateToken)
+		nodes.GET("/:id/install-script-preview", RequireRole("admin"), nodeHandler.PreviewScript)

 		// Agent API（token 认证，无需 JWT）
 		if deps.AgentService != nil {
-			agentHandler := NewAgentHandler(deps.AgentService, deps.NodeService)
+			agentHandler := NewAgentHandler(deps.AgentService, deps.NodeService, deps.RestoreService)
 			agent := api.Group("/agent")
 			agent.POST("/heartbeat", agentHandler.Heartbeat)
 			agent.POST("/commands/poll", agentHandler.Poll)
 			agent.POST("/commands/:id/result", agentHandler.SubmitCommandResult)
 			agent.GET("/tasks/:id", agentHandler.GetTaskSpec)
 			agent.POST("/records/:id", agentHandler.UpdateRecord)
+			agent.GET("/restores/:id/spec", agentHandler.GetRestoreSpec)
+			agent.POST("/restores/:id", agentHandler.UpdateRestore)
+
+			// Agent v1（安装脚本探活用），仅 Self 端点
+			v1Agent := api.Group("/v1/agent")
+			v1Agent.GET("/self", agentHandler.Self)
 		} else {
 			// 未启用 Agent 服务时，保留原有 heartbeat 端点以兼容
 			api.POST("/agent/heartbeat", nodeHandler.Heartbeat)
 		}
 	}

-	engine.NoRoute(func(c *gin.Context) {
+	// 健康检查端点（公开、无认证、低开销）
+	// K8s/Swarm/Nomad 等编排系统使用这些端点做 liveness/readiness 探测。
+	healthHandler := NewHealthHandler(deps.DB, deps.Version)
+	engine.GET("/health", healthHandler.Live)
+	engine.GET("/ready", healthHandler.Ready)
+	// 在 /api 下也暴露一份，方便反向代理按 path 前缀统一路由
+	engine.GET("/api/health", healthHandler.Live)
+	engine.GET("/api/ready", healthHandler.Ready)
+
+	// Prometheus /metrics 端点（公开、无认证；内网/反向代理授权即可）。
+	// 业内通行做法：/metrics 通常由 Prometheus pull 抓取，不走 API Key。
+	if deps.Metrics != nil {
+		engine.GET("/metrics", gin.WrapH(deps.Metrics.Handler()))
+	}
+
+	// 公开安装路由（不走 JWT 中间件）。
+	// 同时注册到 / 和 /api 前缀下：
+	//   - /install/:token        保留历史 URL，兼容旧 nginx 部署
+	//   - /api/install/:token    新 URL，自动走反向代理的 /api/ 转发规则
+	//
+	// Issue #46：用户的 nginx 只转发 /api/，/install/* 被 SPA fallback 到 index.html，
+	// 返回 HTML 被 sh 解释成 "Syntax error"。使用 /api/install/ 可避开此问题。
+	if deps.InstallTokenService != nil {
+		gcCtx := deps.Context
+		if gcCtx == nil {
+			gcCtx = context.Background()
+		}
+		installHandler := NewInstallHandler(gcCtx, deps.InstallTokenService, deps.AuditService, deps.MasterExternalURL)
+		engine.GET("/install/:token", installHandler.Script)
+		engine.GET("/install/:token/compose.yml", installHandler.Compose)
+		engine.GET("/api/install/:token", installHandler.Script)
+		engine.GET("/api/install/:token/compose.yml", installHandler.Compose)
+	}
+
+	// 未匹配路由处理：
+	//   - 找到前端产物目录时，托管 SPA（静态文件 + index.html 回退），
+	//     使后端在无 nginx 反向代理时也能直接提供 Web 控制台（issue #62）；
+	//   - 未找到前端目录时退化为纯 API 服务，统一返回结构化 JSON 404。
+	apiNotFound := func(c *gin.Context) {
 		response.Error(c, apperror.New(stdhttp.StatusNotFound, "NOT_FOUND", "接口不存在", errors.New("route not found")))
-	})
+	}
+	if webRoot := resolveWebRoot(deps.Config.Server.WebRoot); webRoot != "" {
+		if deps.Logger != nil {
+			deps.Logger.Info("serving web frontend", zap.String("web_root", webRoot))
+		}
+		engine.NoRoute(spaFileServer(webRoot, apiNotFound))
+	} else {
+		if deps.Logger != nil {
+			deps.Logger.Warn("web frontend directory not found; serving API only",
+				zap.String("hint", "set server.web_root in config, or place the built frontend at ./web"))
+		}
+		engine.NoRoute(apiNotFound)
+	}

 	return engine
 }
--- a/server/internal/http/router_test.go
+++ b/server/internal/http/router_test.go
@@ -16,50 +16,17 @@ import (
 	"backupx/server/internal/repository"
 	"backupx/server/internal/security"
 	"backupx/server/internal/service"
+	"backupx/server/internal/storage/codec"
+
+	"github.com/pquerna/otp/totp"
 )

 func TestSetupLoginAndProfileFlow(t *testing.T) {
-	tempDir := t.TempDir()
-	cfg := config.Config{
-		Server: config.ServerConfig{Host: "127.0.0.1", Port: 8340, Mode: "test"},
-		Database: config.DatabaseConfig{Path: filepath.Join(tempDir, "backupx.db")},
-		Security: config.SecurityConfig{JWTExpire: "24h"},
-		Log: config.LogConfig{Level: "error"},
-	}
-
-	log, err := logger.New(cfg.Log)
-	if err != nil {
-		t.Fatalf("logger.New error: %v", err)
-	}
-	db, err := database.Open(cfg.Database, log)
-	if err != nil {
-		t.Fatalf("database.Open error: %v", err)
-	}
-
-	userRepo := repository.NewUserRepository(db)
-	systemConfigRepo := repository.NewSystemConfigRepository(db)
-	resolved, err := service.ResolveSecurity(context.Background(), cfg.Security, systemConfigRepo)
-	if err != nil {
-		t.Fatalf("ResolveSecurity error: %v", err)
-	}
-	jwtManager := security.NewJWTManager(resolved.JWTSecret, time.Hour)
-	authService := service.NewAuthService(userRepo, systemConfigRepo, jwtManager, security.NewLoginRateLimiter(5, time.Minute))
-	systemService := service.NewSystemService(cfg, "test", time.Now().UTC())
-
-	router := NewRouter(RouterDependencies{
-		Config:           cfg,
-		Version:          "test",
-		Logger:           log,
-		AuthService:      authService,
-		SystemService:    systemService,
-		JWTManager:       jwtManager,
-		UserRepository:   userRepo,
-		SystemConfigRepo: systemConfigRepo,
-	})
+	router, _ := newTestHTTPRouter(t)

 	setupBody, _ := json.Marshal(map[string]string{
-		"username": "admin",
-		"password": "password-123",
+		"username":    "admin",
+		"password":    "password-123",
 		"displayName": "Admin",
 	})
 	setupRequest := httptest.NewRequest(http.MethodPost, "/api/auth/setup", bytes.NewBuffer(setupBody))
@@ -92,3 +59,143 @@ func TestSetupLoginAndProfileFlow(t *testing.T) {
 		t.Fatalf("expected profile 200, got %d", profileRecorder.Code)
 	}
 }
+
+func TestTrustedDeviceCookieSkipsMFA(t *testing.T) {
+	router, authService := newTestHTTPRouter(t)
+	if _, err := authService.Setup(context.Background(), service.SetupInput{
+		Username: "admin", Password: "password-123", DisplayName: "Admin",
+	}); err != nil {
+		t.Fatalf("Setup error: %v", err)
+	}
+	totpSetup, err := authService.PrepareTwoFactor(context.Background(), "1", service.TwoFactorSetupInput{
+		CurrentPassword: "password-123",
+	})
+	if err != nil {
+		t.Fatalf("PrepareTwoFactor error: %v", err)
+	}
+	enableCode, err := totp.GenerateCode(totpSetup.Secret, time.Now().UTC())
+	if err != nil {
+		t.Fatalf("GenerateCode error: %v", err)
+	}
+	if _, err := authService.EnableTwoFactor(context.Background(), "1", service.EnableTwoFactorInput{Code: enableCode}); err != nil {
+		t.Fatalf("EnableTwoFactor error: %v", err)
+	}
+
+	loginCode, err := totp.GenerateCode(totpSetup.Secret, time.Now().UTC())
+	if err != nil {
+		t.Fatalf("GenerateCode login error: %v", err)
+	}
+	loginBody, _ := json.Marshal(map[string]any{
+		"username":          "admin",
+		"password":          "password-123",
+		"twoFactorCode":     loginCode,
+		"rememberDevice":    true,
+		"trustedDeviceName": "test browser",
+	})
+	loginRequest := httptest.NewRequest(http.MethodPost, "/api/auth/login", bytes.NewBuffer(loginBody))
+	loginRequest.Header.Set("Content-Type", "application/json")
+	loginRecorder := httptest.NewRecorder()
+	router.ServeHTTP(loginRecorder, loginRequest)
+
+	if loginRecorder.Code != http.StatusOK {
+		t.Fatalf("expected login 200, got %d: %s", loginRecorder.Code, loginRecorder.Body.String())
+	}
+	trustedCookie := findCookie(loginRecorder.Result().Cookies(), trustedDeviceCookieName)
+	if trustedCookie == nil {
+		t.Fatalf("expected trusted device cookie")
+	}
+	if !trustedCookie.HttpOnly {
+		t.Fatalf("expected trusted device cookie to be HttpOnly")
+	}
+	if trustedCookie.Path != trustedDeviceCookiePath {
+		t.Fatalf("expected trusted device cookie path %q, got %q", trustedDeviceCookiePath, trustedCookie.Path)
+	}
+	var loginResponse struct {
+		Data struct {
+			Token              string                       `json:"token"`
+			TrustedDeviceToken string                       `json:"trustedDeviceToken"`
+			TrustedDevice      *service.TrustedDeviceOutput `json:"trustedDevice"`
+		} `json:"data"`
+	}
+	if err := json.Unmarshal(loginRecorder.Body.Bytes(), &loginResponse); err != nil {
+		t.Fatalf("unmarshal login response: %v", err)
+	}
+	if loginResponse.Data.Token == "" || loginResponse.Data.TrustedDevice == nil {
+		t.Fatalf("expected login token and trusted device metadata")
+	}
+	if loginResponse.Data.TrustedDeviceToken != "" {
+		t.Fatalf("trusted device token should not be exposed in response body")
+	}
+
+	secondBody, _ := json.Marshal(map[string]string{
+		"username": "admin",
+		"password": "password-123",
+	})
+	secondRequest := httptest.NewRequest(http.MethodPost, "/api/auth/login", bytes.NewBuffer(secondBody))
+	secondRequest.Header.Set("Content-Type", "application/json")
+	secondRequest.AddCookie(trustedCookie)
+	secondRecorder := httptest.NewRecorder()
+	router.ServeHTTP(secondRecorder, secondRequest)
+
+	if secondRecorder.Code != http.StatusOK {
+		t.Fatalf("expected trusted device login 200, got %d: %s", secondRecorder.Code, secondRecorder.Body.String())
+	}
+}
+
+func newTestHTTPRouter(t *testing.T) (http.Handler, *service.AuthService) {
+	t.Helper()
+	tempDir := t.TempDir()
+	cfg := config.Config{
+		Server:   config.ServerConfig{Host: "127.0.0.1", Port: 8340, Mode: "test"},
+		Database: config.DatabaseConfig{Path: filepath.Join(tempDir, "backupx.db")},
+		Security: config.SecurityConfig{JWTExpire: "24h"},
+		Log:      config.LogConfig{Level: "error"},
+	}
+
+	log, err := logger.New(cfg.Log)
+	if err != nil {
+		t.Fatalf("logger.New error: %v", err)
+	}
+	db, err := database.Open(cfg.Database, log)
+	if err != nil {
+		t.Fatalf("database.Open error: %v", err)
+	}
+	sqlDB, err := db.DB()
+	if err != nil {
+		t.Fatalf("db.DB error: %v", err)
+	}
+	t.Cleanup(func() {
+		_ = sqlDB.Close()
+	})
+
+	userRepo := repository.NewUserRepository(db)
+	systemConfigRepo := repository.NewSystemConfigRepository(db)
+	resolved, err := service.ResolveSecurity(context.Background(), cfg.Security, systemConfigRepo)
+	if err != nil {
+		t.Fatalf("ResolveSecurity error: %v", err)
+	}
+	jwtManager := security.NewJWTManager(resolved.JWTSecret, time.Hour)
+	authService := service.NewAuthService(userRepo, systemConfigRepo, jwtManager, security.NewLoginRateLimiter(5, time.Minute), codec.NewConfigCipher(resolved.EncryptionKey))
+	systemService := service.NewSystemService(cfg, "test", time.Now().UTC())
+
+	router := NewRouter(RouterDependencies{
+		Config:           cfg,
+		Version:          "test",
+		Logger:           log,
+		AuthService:      authService,
+		SystemService:    systemService,
+		JWTManager:       jwtManager,
+		UserRepository:   userRepo,
+		SystemConfigRepo: systemConfigRepo,
+	})
+	return router, authService
+}
+
+func findCookie(cookies []*http.Cookie, name string) *http.Cookie {
+	for _, cookie := range cookies {
+		if cookie.Name == name {
+			return cookie
+		}
+	}
+	return nil
+}
--- a/server/internal/http/search_handler.go
+++ b/server/internal/http/search_handler.go
@@ -0,0 +1,28 @@
+package http
+
+import (
+	"backupx/server/internal/service"
+	"backupx/server/pkg/response"
+
+	"github.com/gin-gonic/gin"
+)
+
+// SearchHandler 全局搜索。
+type SearchHandler struct {
+	service *service.SearchService
+}
+
+func NewSearchHandler(s *service.SearchService) *SearchHandler {
+	return &SearchHandler{service: s}
+}
+
+// Search GET /search?q=关键字
+func (h *SearchHandler) Search(c *gin.Context) {
+	query := c.Query("q")
+	result, err := h.service.Search(c.Request.Context(), query)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, result)
+}
--- a/server/internal/http/spa.go
+++ b/server/internal/http/spa.go
@@ -0,0 +1,86 @@
+package http
+
+import (
+	stdhttp "net/http"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/gin-gonic/gin"
+)
+
+// resolveWebRoot 返回前端静态资源目录。优先使用显式配置的路径，
+// 否则按部署惯例依次探测常见位置，返回首个包含 index.html 的目录。
+// 返回空字符串表示未找到前端产物，此时后端退化为纯 API 服务。
+func resolveWebRoot(configured string) string {
+	candidates := []string{
+		configured,
+		"./web/dist",  // 源码树根目录构建产物（优先于 ./web，避免命中前端源码模板）
+		"./web",       // systemd：WorkingDirectory=/opt/backupx → /opt/backupx/web；容器 WORKDIR=/app → /app/web
+		"../web/dist", // 从 server/ 目录运行（make dev-server）
+		"/opt/backupx/web",
+		"/app/web",
+	}
+	for _, dir := range candidates {
+		if strings.TrimSpace(dir) == "" {
+			continue
+		}
+		if hasIndexHTML(dir) {
+			if abs, err := filepath.Abs(dir); err == nil {
+				return abs
+			}
+			return dir
+		}
+	}
+	return ""
+}
+
+func hasIndexHTML(dir string) bool {
+	info, err := os.Stat(filepath.Join(dir, "index.html"))
+	return err == nil && !info.IsDir()
+}
+
+// isReservedBackendPath 判断请求是否命中后端保留前缀（API、探针、安装脚本）。
+// 这些路径即使未匹配到具体路由，也应返回结构化 JSON 404，而不是回退到
+// 前端 index.html —— 否则反向代理/安装脚本会把 HTML 当成接口响应（参考 issue #46）。
+func isReservedBackendPath(p string) bool {
+	switch p {
+	case "/health", "/ready", "/metrics", "/api", "/install":
+		return true
+	}
+	return strings.HasPrefix(p, "/api/") || strings.HasPrefix(p, "/install/")
+}
+
+// spaFileServer 构造 SPA 静态资源处理器，用作 gin 的 NoRoute 回退：
+//   - 后端保留前缀返回 apiNotFound（JSON 404）；
+//   - 其余 GET/HEAD 请求若在 webRoot 内命中真实文件则直接返回该文件；
+//   - 未命中文件的路径回退到 index.html，交由前端路由处理（history 模式刷新）。
+func spaFileServer(webRoot string, apiNotFound gin.HandlerFunc) gin.HandlerFunc {
+	indexPath := filepath.Join(webRoot, "index.html")
+	return func(c *gin.Context) {
+		reqPath := c.Request.URL.Path
+		if isReservedBackendPath(reqPath) {
+			apiNotFound(c)
+			return
+		}
+		if c.Request.Method != stdhttp.MethodGet && c.Request.Method != stdhttp.MethodHead {
+			apiNotFound(c)
+			return
+		}
+
+		// 防目录穿越：以 webRoot 为根清理路径，确保最终目标仍位于 webRoot 内。
+		clean := filepath.Clean("/" + strings.TrimPrefix(reqPath, "/"))
+		target := filepath.Join(webRoot, clean)
+		if rel, err := filepath.Rel(webRoot, target); err != nil || rel == ".." || strings.HasPrefix(rel, ".."+string(filepath.Separator)) {
+			apiNotFound(c)
+			return
+		}
+
+		if info, err := os.Stat(target); err == nil && !info.IsDir() {
+			c.File(target)
+			return
+		}
+		// 前端 SPA 路由（/dashboard、/tasks 等）回退到 index.html。
+		c.File(indexPath)
+	}
+}
--- a/server/internal/http/spa_test.go
+++ b/server/internal/http/spa_test.go
@@ -0,0 +1,175 @@
+package http
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/gin-gonic/gin"
+)
+
+func TestResolveWebRoot(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+
+	t.Run("explicit configured dir with index.html", func(t *testing.T) {
+		dir := t.TempDir()
+		writeIndex(t, dir)
+		got := resolveWebRoot(dir)
+		abs, _ := filepath.Abs(dir)
+		if got != abs {
+			t.Fatalf("resolveWebRoot(%q) = %q, want %q", dir, got, abs)
+		}
+	})
+
+	t.Run("configured dir without index.html falls through to none", func(t *testing.T) {
+		dir := t.TempDir() // no index.html, and no conventional ./web in CWD during test
+		if got := resolveWebRoot(dir); got != "" {
+			// 允许 CWD 恰好存在约定目录的环境，但临时目录本身不应被选中。
+			abs, _ := filepath.Abs(dir)
+			if got == abs {
+				t.Fatalf("expected dir without index.html to be skipped, got %q", got)
+			}
+		}
+	})
+
+	t.Run("empty configured uses auto-detect order", func(t *testing.T) {
+		// 切到一个仅含 ./web/dist/index.html 的临时工作目录，验证自动探测。
+		root := t.TempDir()
+		distDir := filepath.Join(root, "web", "dist")
+		if err := os.MkdirAll(distDir, 0o755); err != nil {
+			t.Fatal(err)
+		}
+		writeIndex(t, distDir)
+
+		restore := chdir(t, root)
+		defer restore()
+
+		// 以 chdir 之后的实际工作目录为基准计算期望值，避免 macOS 上
+		// /var → /private/var 符号链接导致字符串不一致。
+		wd, err := os.Getwd()
+		if err != nil {
+			t.Fatal(err)
+		}
+		want := filepath.Join(wd, "web", "dist")
+
+		got := resolveWebRoot("")
+		if got != want {
+			t.Fatalf("auto-detect = %q, want %q", got, want)
+		}
+	})
+}
+
+func TestIsReservedBackendPath(t *testing.T) {
+	reserved := []string{"/health", "/ready", "/metrics", "/api", "/install", "/api/", "/api/system/info", "/install/abc", "/install/abc/compose.yml"}
+	for _, p := range reserved {
+		if !isReservedBackendPath(p) {
+			t.Errorf("isReservedBackendPath(%q) = false, want true", p)
+		}
+	}
+	notReserved := []string{"/", "/dashboard", "/assets/app.js", "/installer", "/apidocs", "/favicon.ico"}
+	for _, p := range notReserved {
+		if isReservedBackendPath(p) {
+			t.Errorf("isReservedBackendPath(%q) = true, want false", p)
+		}
+	}
+}
+
+func TestSpaFileServer(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+	webRoot := t.TempDir()
+	writeIndexContent(t, webRoot, "<!doctype html><title>BackupX</title>")
+	assetsDir := filepath.Join(webRoot, "assets")
+	if err := os.MkdirAll(assetsDir, 0o755); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(filepath.Join(assetsDir, "app.js"), []byte("console.log(1)"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+
+	apiNotFoundHit := false
+	apiNotFound := func(c *gin.Context) {
+		apiNotFoundHit = true
+		c.JSON(http.StatusNotFound, gin.H{"code": "NOT_FOUND"})
+	}
+
+	engine := gin.New()
+	engine.NoRoute(spaFileServer(webRoot, apiNotFound))
+
+	cases := []struct {
+		name       string
+		method     string
+		path       string
+		wantStatus int
+		wantBody   string // 子串；为空表示不校验
+		wantAPI404 bool
+	}{
+		{name: "root serves index", method: http.MethodGet, path: "/", wantStatus: 200, wantBody: "BackupX"},
+		{name: "spa route falls back to index", method: http.MethodGet, path: "/dashboard", wantStatus: 200, wantBody: "BackupX"},
+		{name: "real asset served", method: http.MethodGet, path: "/assets/app.js", wantStatus: 200, wantBody: "console.log"},
+		{name: "api path returns json 404", method: http.MethodGet, path: "/api/garbage", wantStatus: 404, wantAPI404: true},
+		{name: "health returns json 404 via reserved", method: http.MethodGet, path: "/health", wantStatus: 404, wantAPI404: true},
+		{name: "non-GET on spa path is api 404", method: http.MethodPost, path: "/dashboard", wantStatus: 404, wantAPI404: true},
+		{name: "directory falls back to index", method: http.MethodGet, path: "/assets/", wantStatus: 200, wantBody: "BackupX"},
+		// 含 ".." 的请求路径被 net/http 在文件服务层直接拒绝（400 invalid URL path），
+		// 绝不会泄露 webRoot 之外的文件；这是在 filepath.Rel 校验之上的纵深防御。
+		{name: "traversal rejected, never serves passwd", method: http.MethodGet, path: "/../../etc/passwd", wantStatus: 400, wantBody: "invalid URL path"},
+	}
+
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			apiNotFoundHit = false
+			req := httptest.NewRequest(tc.method, tc.path, nil)
+			rec := httptest.NewRecorder()
+			engine.ServeHTTP(rec, req)
+
+			if rec.Code != tc.wantStatus {
+				t.Fatalf("status = %d, want %d (body=%q)", rec.Code, tc.wantStatus, rec.Body.String())
+			}
+			if tc.wantBody != "" && !contains(rec.Body.String(), tc.wantBody) {
+				t.Fatalf("body %q does not contain %q", rec.Body.String(), tc.wantBody)
+			}
+			if tc.wantAPI404 != apiNotFoundHit {
+				t.Fatalf("apiNotFoundHit = %v, want %v", apiNotFoundHit, tc.wantAPI404)
+			}
+		})
+	}
+}
+
+func writeIndex(t *testing.T, dir string) {
+	t.Helper()
+	writeIndexContent(t, dir, "<!doctype html><title>BackupX</title>")
+}
+
+func writeIndexContent(t *testing.T, dir, content string) {
+	t.Helper()
+	if err := os.WriteFile(filepath.Join(dir, "index.html"), []byte(content), 0o644); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func chdir(t *testing.T, dir string) func() {
+	t.Helper()
+	orig, err := os.Getwd()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := os.Chdir(dir); err != nil {
+		t.Fatal(err)
+	}
+	return func() { _ = os.Chdir(orig) }
+}
+
+func contains(s, sub string) bool {
+	return len(sub) == 0 || (len(s) >= len(sub) && indexOf(s, sub) >= 0)
+}
+
+func indexOf(s, sub string) int {
+	for i := 0; i+len(sub) <= len(s); i++ {
+		if s[i:i+len(sub)] == sub {
+			return i
+		}
+	}
+	return -1
+}
--- a/server/internal/http/storage_target_handler.go
+++ b/server/internal/http/storage_target_handler.go
@@ -199,7 +199,7 @@ func (h *StorageTargetHandler) GoogleDriveProfile(c *gin.Context) {

 func parseUintParam(c *gin.Context, key string) (uint, bool) {
 	value := strings.TrimSpace(c.Param(key))
-	parsed, err := strconv.ParseUint(value, 10, 64)
+	parsed, err := strconv.ParseUint(value, 10, 0)
 	if err != nil {
 		response.Error(c, apperror.BadRequest("INVALID_ID", fmt.Sprintf("参数 %s 不合法", key), err))
 		return 0, false
--- a/server/internal/http/task_export_handler.go
+++ b/server/internal/http/task_export_handler.go
@@ -0,0 +1,101 @@
+package http
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	stdhttp "net/http"
+	"strconv"
+	"strings"
+	"time"
+
+	"backupx/server/internal/apperror"
+	"backupx/server/internal/service"
+	"backupx/server/pkg/response"
+
+	"github.com/gin-gonic/gin"
+)
+
+// TaskExportHandler 提供任务配置 JSON 导入/导出。
+type TaskExportHandler struct {
+	service      *service.TaskExportService
+	auditService *service.AuditService
+}
+
+func NewTaskExportHandler(s *service.TaskExportService, audit *service.AuditService) *TaskExportHandler {
+	return &TaskExportHandler{service: s, auditService: audit}
+}
+
+// Export GET /api/backup/tasks/export?ids=1,2,3
+// 无 ids 参数时导出全部任务。返回 application/json + Content-Disposition。
+func (h *TaskExportHandler) Export(c *gin.Context) {
+	var taskIDs []uint
+	if v := strings.TrimSpace(c.Query("ids")); v != "" {
+		for _, part := range strings.Split(v, ",") {
+			if id, err := strconv.ParseUint(strings.TrimSpace(part), 10, 32); err == nil {
+				taskIDs = append(taskIDs, uint(id))
+			}
+		}
+	}
+	payload, err := h.service.Export(c.Request.Context(), taskIDs)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	data, err := json.MarshalIndent(payload, "", "  ")
+	if err != nil {
+		response.Error(c, apperror.Internal("TASK_EXPORT_MARSHAL_FAILED", "无法序列化导出内容", err))
+		return
+	}
+	filename := fmt.Sprintf("backupx-tasks-%s.json", time.Now().UTC().Format("20060102-150405"))
+	c.Header("Content-Type", "application/json; charset=utf-8")
+	c.Header("Content-Disposition", fmt.Sprintf("attachment; filename=%q", filename))
+	_, _ = c.Writer.Write(data)
+	recordAudit(c, h.auditService, "backup_task", "export", "backup_task", "", "",
+		fmt.Sprintf("导出 %d 个任务的配置为 JSON", payload.TaskCount))
+}
+
+// Import POST /api/backup/tasks/import
+// Body: ExportPayload JSON。返回每个任务的创建/跳过结果。
+func (h *TaskExportHandler) Import(c *gin.Context) {
+	body, err := io.ReadAll(c.Request.Body)
+	if err != nil {
+		response.Error(c, apperror.BadRequest("TASK_IMPORT_INVALID", "无法读取请求体", err))
+		return
+	}
+	if len(body) == 0 {
+		response.Error(c, apperror.BadRequest("TASK_IMPORT_INVALID", "请求体为空", nil))
+		return
+	}
+	if len(body) > 1024*1024 { // 1MB 上限
+		c.Writer.WriteHeader(stdhttp.StatusRequestEntityTooLarge)
+		response.Error(c, apperror.BadRequest("TASK_IMPORT_TOO_LARGE", "导入文件过大（上限 1MB）", nil))
+		return
+	}
+	var payload service.ExportPayload
+	if err := json.Unmarshal(body, &payload); err != nil {
+		response.Error(c, apperror.BadRequest("TASK_IMPORT_INVALID", "JSON 格式不合法", err))
+		return
+	}
+	if len(payload.Tasks) == 0 {
+		response.Error(c, apperror.BadRequest("TASK_IMPORT_INVALID", "文件中未包含任何任务", nil))
+		return
+	}
+	results, err := h.service.Import(c.Request.Context(), payload)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	succ := 0
+	skipped := 0
+	for _, r := range results {
+		if r.Success && !r.Skipped {
+			succ++
+		} else if r.Skipped {
+			skipped++
+		}
+	}
+	recordAudit(c, h.auditService, "backup_task", "import", "backup_task", "", "",
+		fmt.Sprintf("从 JSON 导入任务：创建 %d / 跳过 %d / 失败 %d", succ, skipped, len(results)-succ-skipped))
+	response.Success(c, results)
+}
--- a/server/internal/http/task_template_handler.go
+++ b/server/internal/http/task_template_handler.go
@@ -0,0 +1,125 @@
+package http
+
+import (
+	"fmt"
+
+	"backupx/server/internal/apperror"
+	"backupx/server/internal/service"
+	"backupx/server/pkg/response"
+
+	"github.com/gin-gonic/gin"
+)
+
+type TaskTemplateHandler struct {
+	service      *service.TaskTemplateService
+	auditService *service.AuditService
+}
+
+func NewTaskTemplateHandler(templateService *service.TaskTemplateService, auditService *service.AuditService) *TaskTemplateHandler {
+	return &TaskTemplateHandler{service: templateService, auditService: auditService}
+}
+
+func (h *TaskTemplateHandler) List(c *gin.Context) {
+	items, err := h.service.List(c.Request.Context())
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, items)
+}
+
+func (h *TaskTemplateHandler) Get(c *gin.Context) {
+	id, ok := parseUintParam(c, "id")
+	if !ok {
+		return
+	}
+	item, err := h.service.Get(c.Request.Context(), id)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, item)
+}
+
+func (h *TaskTemplateHandler) Create(c *gin.Context) {
+	var input service.TaskTemplateUpsertInput
+	if err := c.ShouldBindJSON(&input); err != nil {
+		response.Error(c, apperror.BadRequest("TASK_TEMPLATE_INVALID", "模板参数不合法", err))
+		return
+	}
+	creator := ""
+	if v, ok := c.Get(contextUsernameKey); ok {
+		if s, ok := v.(string); ok {
+			creator = s
+		}
+	}
+	item, err := h.service.Create(c.Request.Context(), creator, input)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	recordAudit(c, h.auditService, "task_template", "create", "task_template", fmt.Sprintf("%d", item.ID), item.Name,
+		fmt.Sprintf("创建任务模板: %s (类型: %s)", item.Name, item.TaskType))
+	response.Success(c, item)
+}
+
+func (h *TaskTemplateHandler) Update(c *gin.Context) {
+	id, ok := parseUintParam(c, "id")
+	if !ok {
+		return
+	}
+	var input service.TaskTemplateUpsertInput
+	if err := c.ShouldBindJSON(&input); err != nil {
+		response.Error(c, apperror.BadRequest("TASK_TEMPLATE_INVALID", "模板参数不合法", err))
+		return
+	}
+	item, err := h.service.Update(c.Request.Context(), id, input)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	recordAudit(c, h.auditService, "task_template", "update", "task_template", fmt.Sprintf("%d", item.ID), item.Name,
+		fmt.Sprintf("更新任务模板: %s", item.Name))
+	response.Success(c, item)
+}
+
+func (h *TaskTemplateHandler) Delete(c *gin.Context) {
+	id, ok := parseUintParam(c, "id")
+	if !ok {
+		return
+	}
+	if err := h.service.Delete(c.Request.Context(), id); err != nil {
+		response.Error(c, err)
+		return
+	}
+	recordAudit(c, h.auditService, "task_template", "delete", "task_template", fmt.Sprintf("%d", id), "",
+		fmt.Sprintf("删除任务模板 (ID: %d)", id))
+	response.Success(c, gin.H{"deleted": true})
+}
+
+// Apply 一键批量创建任务。Body: {variables: [{name, sourcePath, ...}, ...]}
+func (h *TaskTemplateHandler) Apply(c *gin.Context) {
+	id, ok := parseUintParam(c, "id")
+	if !ok {
+		return
+	}
+	var input service.TaskTemplateApplyInput
+	if err := c.ShouldBindJSON(&input); err != nil {
+		response.Error(c, apperror.BadRequest("TASK_TEMPLATE_INVALID", "应用参数不合法", err))
+		return
+	}
+	results, err := h.service.Apply(c.Request.Context(), id, input)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	successCount := 0
+	for _, r := range results {
+		if r.Success {
+			successCount++
+		}
+	}
+	recordAudit(c, h.auditService, "task_template", "apply", "task_template", fmt.Sprintf("%d", id), "",
+		fmt.Sprintf("应用模板批量创建任务（成功 %d/%d）", successCount, len(results)))
+	response.Success(c, results)
+}
--- a/server/internal/http/user_handler.go
+++ b/server/internal/http/user_handler.go
@@ -0,0 +1,95 @@
+package http
+
+import (
+	"fmt"
+
+	"backupx/server/internal/apperror"
+	"backupx/server/internal/service"
+	"backupx/server/pkg/response"
+
+	"github.com/gin-gonic/gin"
+)
+
+// UserHandler 管理账号（仅 admin 可访问）。
+type UserHandler struct {
+	service      *service.UserService
+	auditService *service.AuditService
+}
+
+func NewUserHandler(userService *service.UserService, auditService *service.AuditService) *UserHandler {
+	return &UserHandler{service: userService, auditService: auditService}
+}
+
+func (h *UserHandler) List(c *gin.Context) {
+	items, err := h.service.List(c.Request.Context())
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, items)
+}
+
+func (h *UserHandler) Create(c *gin.Context) {
+	var input service.UserUpsertInput
+	if err := c.ShouldBindJSON(&input); err != nil {
+		response.Error(c, apperror.BadRequest("USER_INVALID", "用户参数不合法", err))
+		return
+	}
+	item, err := h.service.Create(c.Request.Context(), input)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	recordAudit(c, h.auditService, "user", "create", "user", fmt.Sprintf("%d", item.ID), item.Username,
+		fmt.Sprintf("创建用户 %s (角色: %s)", item.Username, item.Role))
+	response.Success(c, item)
+}
+
+func (h *UserHandler) Update(c *gin.Context) {
+	id, ok := parseUintParam(c, "id")
+	if !ok {
+		return
+	}
+	var input service.UserUpsertInput
+	if err := c.ShouldBindJSON(&input); err != nil {
+		response.Error(c, apperror.BadRequest("USER_INVALID", "用户参数不合法", err))
+		return
+	}
+	item, err := h.service.Update(c.Request.Context(), id, input)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	recordAudit(c, h.auditService, "user", "update", "user", fmt.Sprintf("%d", id), item.Username,
+		fmt.Sprintf("更新用户 %s (角色: %s, 停用: %v)", item.Username, item.Role, item.Disabled))
+	response.Success(c, item)
+}
+
+func (h *UserHandler) Delete(c *gin.Context) {
+	id, ok := parseUintParam(c, "id")
+	if !ok {
+		return
+	}
+	if err := h.service.Delete(c.Request.Context(), id); err != nil {
+		response.Error(c, err)
+		return
+	}
+	recordAudit(c, h.auditService, "user", "delete", "user", fmt.Sprintf("%d", id), "",
+		fmt.Sprintf("删除用户 (ID: %d)", id))
+	response.Success(c, gin.H{"deleted": true})
+}
+
+func (h *UserHandler) ResetTwoFactor(c *gin.Context) {
+	id, ok := parseUintParam(c, "id")
+	if !ok {
+		return
+	}
+	item, err := h.service.ResetTwoFactor(c.Request.Context(), id)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	recordAudit(c, h.auditService, "user", "reset_two_factor", "user", fmt.Sprintf("%d", id), item.Username,
+		fmt.Sprintf("重置用户 %s 的 MFA", item.Username))
+	response.Success(c, item)
+}
--- a/server/internal/http/verification_handler.go
+++ b/server/internal/http/verification_handler.go
@@ -0,0 +1,207 @@
+package http
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"strconv"
+	"strings"
+	"time"
+
+	"backupx/server/internal/apperror"
+	"backupx/server/internal/backup"
+	"backupx/server/internal/service"
+	"backupx/server/pkg/response"
+
+	"github.com/gin-gonic/gin"
+)
+
+// VerificationHandler 提供验证记录列表/详情/SSE，以及手动触发入口。
+type VerificationHandler struct {
+	service      *service.VerificationService
+	auditService *service.AuditService
+}
+
+func NewVerificationHandler(verifyService *service.VerificationService, auditService *service.AuditService) *VerificationHandler {
+	return &VerificationHandler{service: verifyService, auditService: auditService}
+}
+
+// TriggerByTask 接收任务级手动触发。使用最新成功备份为源。
+func (h *VerificationHandler) TriggerByTask(c *gin.Context) {
+	taskID, ok := parseUintParam(c, "id")
+	if !ok {
+		return
+	}
+	var input struct {
+		Mode string `json:"mode"`
+	}
+	_ = c.ShouldBindJSON(&input)
+	triggeredBy := ""
+	if subject, exists := c.Get(contextUserSubjectKey); exists {
+		triggeredBy = strings.TrimSpace(fmt.Sprintf("%v", subject))
+	}
+	if triggeredBy == "" {
+		triggeredBy = "manual"
+	}
+	detail, err := h.service.StartByTask(c.Request.Context(), taskID, input.Mode, triggeredBy)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	recordAudit(c, h.auditService, "backup_verify", "manual_run", "backup_task", fmt.Sprintf("%d", taskID), "",
+		fmt.Sprintf("手动触发验证（任务 ID: %d, 验证记录 ID: %d, 模式: %s）", taskID, detail.ID, detail.Mode))
+	response.Success(c, detail)
+}
+
+// TriggerByRecord 基于指定备份记录触发验证（允许验证历史备份）。
+func (h *VerificationHandler) TriggerByRecord(c *gin.Context) {
+	recordID, ok := parseUintParam(c, "id")
+	if !ok {
+		return
+	}
+	var input struct {
+		Mode string `json:"mode"`
+	}
+	_ = c.ShouldBindJSON(&input)
+	triggeredBy := ""
+	if subject, exists := c.Get(contextUserSubjectKey); exists {
+		triggeredBy = strings.TrimSpace(fmt.Sprintf("%v", subject))
+	}
+	if triggeredBy == "" {
+		triggeredBy = "manual"
+	}
+	detail, err := h.service.Start(c.Request.Context(), recordID, input.Mode, triggeredBy)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	recordAudit(c, h.auditService, "backup_verify", "manual_run", "backup_record", fmt.Sprintf("%d", recordID), "",
+		fmt.Sprintf("手动触发验证（备份记录 ID: %d, 验证记录 ID: %d, 模式: %s）", recordID, detail.ID, detail.Mode))
+	response.Success(c, detail)
+}
+
+func (h *VerificationHandler) List(c *gin.Context) {
+	filter, err := buildVerifyFilter(c)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	items, err := h.service.List(c.Request.Context(), filter)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, items)
+}
+
+func (h *VerificationHandler) Get(c *gin.Context) {
+	id, ok := parseUintParam(c, "id")
+	if !ok {
+		return
+	}
+	item, err := h.service.Get(c.Request.Context(), id)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	response.Success(c, item)
+}
+
+func (h *VerificationHandler) StreamLogs(c *gin.Context) {
+	id, ok := parseUintParam(c, "id")
+	if !ok {
+		return
+	}
+	detail, err := h.service.Get(c.Request.Context(), id)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	events := detail.LogEvents
+	completed := detail.Status != "running"
+	channel, cancel, err := h.service.SubscribeLogs(c.Request.Context(), id, 64)
+	if err != nil {
+		response.Error(c, err)
+		return
+	}
+	defer cancel()
+	c.Writer.Header().Set("Content-Type", "text/event-stream")
+	c.Writer.Header().Set("Cache-Control", "no-cache")
+	c.Writer.Header().Set("Connection", "keep-alive")
+	flusher, ok := c.Writer.(interface{ Flush() })
+	if !ok {
+		response.Error(c, apperror.Internal("VERIFY_STREAM_UNSUPPORTED", "当前连接不支持日志流", nil))
+		return
+	}
+	for _, event := range events {
+		if err := writeVerifySSEEvent(c.Writer, event); err != nil {
+			return
+		}
+		flusher.Flush()
+	}
+	if completed {
+		return
+	}
+	for {
+		select {
+		case <-c.Request.Context().Done():
+			return
+		case event, ok := <-channel:
+			if !ok {
+				return
+			}
+			if err := writeVerifySSEEvent(c.Writer, event); err != nil {
+				return
+			}
+			flusher.Flush()
+			if event.Completed {
+				return
+			}
+		}
+	}
+}
+
+func buildVerifyFilter(c *gin.Context) (service.VerificationRecordListInput, error) {
+	var filter service.VerificationRecordListInput
+	if value := strings.TrimSpace(c.Query("taskId")); value != "" {
+		parsed, err := strconv.ParseUint(value, 10, 32)
+		if err != nil {
+			return filter, apperror.BadRequest("VERIFY_RECORD_FILTER_INVALID", "taskId 不合法", err)
+		}
+		v := uint(parsed)
+		filter.TaskID = &v
+	}
+	if value := strings.TrimSpace(c.Query("backupRecordId")); value != "" {
+		parsed, err := strconv.ParseUint(value, 10, 32)
+		if err != nil {
+			return filter, apperror.BadRequest("VERIFY_RECORD_FILTER_INVALID", "backupRecordId 不合法", err)
+		}
+		v := uint(parsed)
+		filter.BackupRecordID = &v
+	}
+	filter.Status = strings.TrimSpace(c.Query("status"))
+	if dateFrom := strings.TrimSpace(c.Query("dateFrom")); dateFrom != "" {
+		parsed, err := time.Parse(time.RFC3339, dateFrom)
+		if err != nil {
+			return filter, apperror.BadRequest("VERIFY_RECORD_FILTER_INVALID", "dateFrom 必须为 RFC3339 时间格式", err)
+		}
+		filter.DateFrom = &parsed
+	}
+	if dateTo := strings.TrimSpace(c.Query("dateTo")); dateTo != "" {
+		parsed, err := time.Parse(time.RFC3339, dateTo)
+		if err != nil {
+			return filter, apperror.BadRequest("VERIFY_RECORD_FILTER_INVALID", "dateTo 必须为 RFC3339 时间格式", err)
+		}
+		filter.DateTo = &parsed
+	}
+	return filter, nil
+}
+
+func writeVerifySSEEvent(writer io.Writer, event backup.LogEvent) error {
+	payload, err := json.Marshal(event)
+	if err != nil {
+		return err
+	}
+	_, err = fmt.Fprintf(writer, "event: log\ndata: %s\n\n", payload)
+	return err
+}
--- a/server/internal/installscript/deploy_install_test.go
+++ b/server/internal/installscript/deploy_install_test.go
@@ -0,0 +1,41 @@
+package installscript
+
+import (
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+func TestDeployInstallScriptSyntax(t *testing.T) {
+	scriptPath := filepath.Join("..", "..", "..", "deploy", "install.sh")
+	cmd := exec.Command("sh", "-n", scriptPath)
+	output, err := cmd.CombinedOutput()
+	if err != nil {
+		t.Fatalf("install.sh syntax invalid: %v\n%s", err, output)
+	}
+}
+
+func TestDeployInstallScriptSupportsReleasePackageLayout(t *testing.T) {
+	scriptPath := filepath.Join("..", "..", "..", "deploy", "install.sh")
+	data, err := os.ReadFile(scriptPath)
+	if err != nil {
+		t.Fatal(err)
+	}
+	script := string(data)
+	for _, want := range []string{
+		`SCRIPT_DIR=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)`,
+		`if [ -f "$SCRIPT_DIR/backupx" ] && [ -d "$SCRIPT_DIR/web" ]; then`,
+		`BIN_SOURCE="${BIN_SOURCE:-$SCRIPT_DIR/backupx}"`,
+		`WEB_SOURCE="${WEB_SOURCE:-$SCRIPT_DIR/web}"`,
+		`CONFIG_TEMPLATE="${CONFIG_TEMPLATE:-$SCRIPT_DIR/config.example.yaml}"`,
+		`发布包安装请确认当前目录包含 ./backupx、./web 和 ./install.sh。`,
+		`cat > "/etc/systemd/system/$SERVICE_NAME.service" <<UNIT`,
+		`if [ -d "/etc/nginx/conf.d" ] && [ -f "$NGINX_SOURCE" ]; then`,
+	} {
+		if !strings.Contains(script, want) {
+			t.Fatalf("install.sh missing %q", want)
+		}
+	}
+}
--- a/Show More
+++ b/Show More