feat: add recent files backend APIs

Bumps the uv group with 2 updates in the / directory: [python-dotenv](https://github.com/theskumar/python-dotenv) and [python-multipart](https://github.com/Kludex/python-multipart).


Updates `python-dotenv` from 1.2.1 to 1.2.2
- [Release notes](https://github.com/theskumar/python-dotenv/releases)
- [Changelog](https://github.com/theskumar/python-dotenv/blob/main/CHANGELOG.md)
- [Commits](https://github.com/theskumar/python-dotenv/compare/v1.2.1...v1.2.2)

Updates `python-multipart` from 0.0.22 to 0.0.26
- [Release notes](https://github.com/Kludex/python-multipart/releases)
- [Changelog](https://github.com/Kludex/python-multipart/blob/main/CHANGELOG.md)
- [Commits](https://github.com/Kludex/python-multipart/compare/0.0.22...0.0.26)

---
updated-dependencies:
- dependency-name: python-dotenv
  dependency-version: 1.2.2
  dependency-type: direct:production
  dependency-group: uv
- dependency-name: python-multipart
  dependency-version: 0.0.26
  dependency-type: direct:production
  dependency-group: uv
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.gitignore

@@ -32,3 +32,5 @@ lerna-debug.log*
 *.njsproj
 *.sln
 *.sw?
+
+/client

api/routers.py

@@ -19,12 +19,14 @@ from domain.audit import api as audit
 from domain.permission import api as permission
 from domain.user import api as user
 from domain.role import api as role
+from domain.recent_files import api as recent_files
 
 
 def include_routers(app: FastAPI):
     app.include_router(adapters.router)
     app.include_router(search_api.router)
     app.include_router(virtual_fs.router)
+    app.include_router(recent_files.router)
     app.include_router(auth.router)
     app.include_router(config.router)
     app.include_router(processors.router)

domain/adapters/api.py

@@ -51,6 +51,29 @@ async def available_adapter_types(
     return success(data)
 
 
+@router.get("/usage")
+@audit(action=AuditAction.READ, description="获取适配器容量使用情况")
+@require_system_permission(AdapterPermission.LIST)
+async def list_adapter_usages(
+    request: Request,
+    current_user: Annotated[User, Depends(get_current_active_user)]
+):
+    usages = await AdapterService.list_adapter_usages()
+    return success(usages)
+
+
+@router.get("/{adapter_id}/usage")
+@audit(action=AuditAction.READ, description="获取单个适配器容量使用情况")
+@require_system_permission(AdapterPermission.LIST)
+async def get_adapter_usage(
+    request: Request,
+    adapter_id: int,
+    current_user: Annotated[User, Depends(get_current_active_user)]
+):
+    usage = await AdapterService.get_adapter_usage(adapter_id)
+    return success(usage)
+
+
 @router.get("/{adapter_id}")
 @audit(action=AuditAction.READ, description="获取适配器详情")
 @require_system_permission(AdapterPermission.LIST)

domain/adapters/providers/base.py

@@ -21,3 +21,8 @@ class BaseAdapter(Protocol):
     async def stream_file(self, root: str, rel: str, range_header: str | None): ...
     async def stat_file(self, root: str, rel: str): ...
     def get_effective_root(self, sub_path: str | None) -> str: ...
+
+
+@runtime_checkable
+class UsageCapableAdapter(Protocol):
+    async def get_usage(self, root: str) -> Dict: ...

domain/adapters/providers/dropbox.py

@@ -455,6 +455,23 @@ class DropboxAdapter:
 
         return StreamingResponse(iterator(), status_code=resp.status_code, headers=out_headers, media_type=content_type)
 
+    async def get_usage(self, root: str):
+        resp = await self._api_json("/users/get_space_usage", {})
+        resp.raise_for_status()
+        payload = resp.json() or {}
+        allocation = payload.get("allocation") or {}
+        allocated = allocation.get("allocated")
+        used = payload.get("used")
+        total = int(allocated) if allocated is not None else None
+        used_bytes = int(used) if used is not None else None
+        return {
+            "used_bytes": used_bytes,
+            "total_bytes": total,
+            "free_bytes": total - used_bytes if total is not None and used_bytes is not None else None,
+            "source": "dropbox",
+            "scope": "account",
+        }
+
 
 ADAPTER_TYPE = "dropbox"
 CONFIG_SCHEMA = [
@@ -468,4 +485,3 @@ CONFIG_SCHEMA = [
 
 
 def ADAPTER_FACTORY(rec): return DropboxAdapter(rec)
-

domain/adapters/providers/googledrive.py

@@ -541,6 +541,22 @@ class GoogleDriveAdapter:
         except Exception:
             return None
 
+    async def get_usage(self, root: str):
+        resp = await self._request("GET", "/about", params={"fields": "storageQuota"})
+        resp.raise_for_status()
+        quota = (resp.json() or {}).get("storageQuota") or {}
+        limit = quota.get("limit")
+        usage = quota.get("usage")
+        total = int(limit) if limit is not None else None
+        used = int(usage) if usage is not None else None
+        return {
+            "used_bytes": used,
+            "total_bytes": total,
+            "free_bytes": total - used if total is not None and used is not None else None,
+            "source": "googledrive",
+            "scope": "drive",
+        }
+
 
 ADAPTER_TYPE = "googledrive"
 

domain/adapters/providers/local.py

@@ -299,23 +299,23 @@ class LocalAdapter:
 
         return StreamingResponse(iterator(), status_code=status, headers=headers, media_type=content_type)
 
-    async def stat_file(self, root: str, rel: str):
+    async def stat_file(self, root: str, rel: str, include_metadata: bool = False):
         fp = _safe_join(root, rel)
         if not fp.exists():
             raise FileNotFoundError(rel)
         st = await asyncio.to_thread(fp.stat)
+        is_dir = fp.is_dir()
         info = {
             "name": fp.name,
-            "is_dir": fp.is_dir(),
+            "is_dir": is_dir,
             "size": st.st_size,
             "mtime": int(st.st_mtime),
             "mode": stat.S_IMODE(st.st_mode),
-            "type": "dir" if fp.is_dir() else "file",
+            "type": "dir" if is_dir else "file",
             "path": str(fp),
         }
-        # exif信息
+        if include_metadata and not is_dir:
-        exif = None
+            exif = None
-        if not fp.is_dir():
             mime, _ = mimetypes.guess_type(fp.name)
             if mime and mime.startswith("image/"):
                 try:
@@ -326,9 +326,32 @@ class LocalAdapter:
                         exif = {str(k): str(v) for k, v in exif_data.items()}
                 except Exception:
                     exif = None
-        info["exif"] = exif
+            info["exif"] = exif
         return info
 
+    async def get_usage(self, root: str):
+        root_path = Path(root).resolve()
+
+        def _usage():
+            used = 0
+            for dirpath, dirnames, filenames in os.walk(root_path):
+                for filename in filenames:
+                    fp = Path(dirpath) / filename
+                    try:
+                        used += fp.stat().st_size
+                    except OSError:
+                        continue
+            disk = shutil.disk_usage(root_path)
+            return {
+                "used_bytes": used,
+                "total_bytes": disk.total,
+                "free_bytes": disk.free,
+                "source": "local",
+                "scope": "mount",
+            }
+
+        return await asyncio.to_thread(_usage)
+
 
 ADAPTER_TYPE = "local"
 CONFIG_SCHEMA = [

domain/adapters/providers/onedrive.py

@@ -443,6 +443,21 @@ class OneDriveAdapter:
         resp.raise_for_status()
         return self._format_item(resp.json())
 
+    async def get_usage(self, root: str):
+        resp = await self._request("GET", full_url=f"{MS_GRAPH_URL}/me/drive?$select=quota")
+        resp.raise_for_status()
+        quota = (resp.json() or {}).get("quota") or {}
+        used = quota.get("used")
+        total = quota.get("total")
+        remaining = quota.get("remaining")
+        return {
+            "used_bytes": int(used) if used is not None else None,
+            "total_bytes": int(total) if total is not None else None,
+            "free_bytes": int(remaining) if remaining is not None else None,
+            "source": "onedrive",
+            "scope": "drive",
+        }
+
 
 ADAPTER_TYPE = "onedrive"
 

domain/adapters/providers/pikpak.py

@@ -0,0 +1,926 @@
+import asyncio
+import hashlib
+import mimetypes
+import re
+import time
+from typing import Any, AsyncIterator, Dict, List, Optional, Tuple
+
+import httpx
+from fastapi import HTTPException
+from fastapi.responses import Response, StreamingResponse
+
+from models import StorageAdapter
+from .base import BaseAdapter
+
+
+API_BASE = "https://api-drive.mypikpak.com/drive/v1"
+USER_BASE = "https://user.mypikpak.com/v1"
+TOKEN_REFRESH_BUFFER = 300
+
+ANDROID_ALGORITHMS = [
+    "SOP04dGzk0TNO7t7t9ekDbAmx+eq0OI1ovEx",
+    "nVBjhYiND4hZ2NCGyV5beamIr7k6ifAsAbl",
+    "Ddjpt5B/Cit6EDq2a6cXgxY9lkEIOw4yC1GDF28KrA",
+    "VVCogcmSNIVvgV6U+AochorydiSymi68YVNGiz",
+    "u5ujk5sM62gpJOsB/1Gu/zsfgfZO",
+    "dXYIiBOAHZgzSruaQ2Nhrqc2im",
+    "z5jUTBSIpBN9g4qSJGlidNAutX6",
+    "KJE2oveZ34du/g1tiimm",
+]
+
+WEB_ALGORITHMS = [
+    "C9qPpZLN8ucRTaTiUMWYS9cQvWOE",
+    "+r6CQVxjzJV6LCV",
+    "F",
+    "pFJRC",
+    "9WXYIDGrwTCz2OiVlgZa90qpECPD6olt",
+    "/750aCr4lm/Sly/c",
+    "RB+DT/gZCrbV",
+    "",
+    "CyLsf7hdkIRxRm215hl",
+    "7xHvLi2tOYP0Y92b",
+    "ZGTXXxu8E/MIWaEDB+Sm/",
+    "1UI3",
+    "E7fP5Pfijd+7K+t6Tg/NhuLq0eEUVChpJSkrKxpO",
+    "ihtqpG6FMt65+Xk+tWUH2",
+    "NhXXU9rg4XXdzo7u5o",
+]
+
+PC_ALGORITHMS = [
+    "KHBJ07an7ROXDoK7Db",
+    "G6n399rSWkl7WcQmw5rpQInurc1DkLmLJqE",
+    "JZD1A3M4x+jBFN62hkr7VDhkkZxb9g3rWqRZqFAAb",
+    "fQnw/AmSlbbI91Ik15gpddGgyU7U",
+    "/Dv9JdPYSj3sHiWjouR95NTQff",
+    "yGx2zuTjbWENZqecNI+edrQgqmZKP",
+    "ljrbSzdHLwbqcRn",
+    "lSHAsqCkGDGxQqqwrVu",
+    "TsWXI81fD1",
+    "vk7hBjawK/rOSrSWajtbMk95nfgf3",
+]
+
+PLATFORM_CONFIG = {
+    "android": {
+        "client_id": "YNxT9w7GMdWvEOKa",
+        "client_secret": "dbw2OtmVEeuUvIptb1Coyg",
+        "client_version": "1.21.0",
+        "package_name": "com.pikcloud.pikpak",
+        "sdk_version": "2.0.6.206003",
+        "algorithms": ANDROID_ALGORITHMS,
+        "ua": "ANDROID-com.pikcloud.pikpak/1.21.0",
+    },
+    "web": {
+        "client_id": "YUMx5nI8ZU8Ap8pm",
+        "client_secret": "dbw2OtmVEeuUvIptb1Coyg",
+        "client_version": "2.0.0",
+        "package_name": "mypikpak.com",
+        "sdk_version": "8.0.3",
+        "algorithms": WEB_ALGORITHMS,
+        "ua": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 "
+        "(KHTML, like Gecko) Chrome/117.0.0.0 Safari/537.36",
+    },
+    "pc": {
+        "client_id": "YvtoWO6GNHiuCl7x",
+        "client_secret": "1NIH5R1IEe2pAxZE3hv3uA",
+        "client_version": "undefined",
+        "package_name": "mypikpak.com",
+        "sdk_version": "8.0.3",
+        "algorithms": PC_ALGORITHMS,
+        "ua": "MainWindow Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 "
+        "(KHTML, like Gecko) PikPak/2.6.11.4955 Chrome/100.0.4896.160 Electron/18.3.15 Safari/537.36",
+    },
+}
+
+
+def _md5_text(value: str) -> str:
+    return hashlib.md5(value.encode("utf-8")).hexdigest()
+
+
+def _sha1_text(value: str) -> str:
+    return hashlib.sha1(value.encode("utf-8")).hexdigest()
+
+
+def _as_bool(value: Any, default: bool = False) -> bool:
+    if value is None:
+        return default
+    if isinstance(value, bool):
+        return value
+    if isinstance(value, str):
+        return value.strip().lower() in {"1", "true", "yes", "on"}
+    return bool(value)
+
+
+def _as_int(value: Any, default: int = 0) -> int:
+    try:
+        return int(value or default)
+    except Exception:
+        return default
+
+
+def _root_payload(root: str | None) -> Tuple[str, str]:
+    raw = (root or "").strip()
+    if not raw:
+        return "", ""
+    if "|" not in raw:
+        return raw, ""
+    root_id, sub_path = raw.split("|", 1)
+    return root_id.strip(), sub_path.strip("/")
+
+
+def _split_parent_name(rel: str) -> Tuple[str, str]:
+    rel = (rel or "").strip("/")
+    if not rel:
+        return "", ""
+    if "/" not in rel:
+        return "", rel
+    parent, _, name = rel.rpartition("/")
+    return parent, name
+
+
+def _parse_time(value: str | None) -> int:
+    if not value:
+        return 0
+    text = str(value).strip()
+    if not text:
+        return 0
+    try:
+        from datetime import datetime, timezone
+
+        if text.endswith("Z"):
+            text = text[:-1] + "+00:00"
+        dt = datetime.fromisoformat(text)
+        if dt.tzinfo is None:
+            dt = dt.replace(tzinfo=timezone.utc)
+        return int(dt.timestamp())
+    except Exception:
+        return 0
+
+
+class PikPakAdapter:
+    def __init__(self, record: StorageAdapter):
+        self.record = record
+        cfg = record.config or {}
+
+        self.username = str(cfg.get("username") or "").strip()
+        self.password = str(cfg.get("password") or "")
+        if not self.username or not self.password:
+            raise ValueError("PikPak adapter requires username and password")
+
+        self.platform = str(cfg.get("platform") or "android").strip().lower()
+        if self.platform not in PLATFORM_CONFIG:
+            self.platform = "android"
+        platform_cfg = PLATFORM_CONFIG[self.platform]
+
+        self.client_id = str(platform_cfg["client_id"])
+        self.client_secret = str(platform_cfg["client_secret"])
+        self.client_version = str(platform_cfg["client_version"])
+        self.package_name = str(platform_cfg["package_name"])
+        self.sdk_version = str(platform_cfg["sdk_version"])
+        self.algorithms = list(platform_cfg["algorithms"])
+
+        device_id = str(cfg.get("device_id") or "").strip()
+        if not device_id or device_id == _md5_text(self.username + self.password):
+            device_id = _md5_text(self.username)
+        self.device_id = device_id
+        self.user_id = str(cfg.get("user_id") or "").strip()
+        self.refresh_token = str(cfg.get("refresh_token") or "").strip()
+        self.access_token = str(cfg.get("access_token") or "").strip()
+        self.expires_at = _as_int(cfg.get("expires_at"), 0)
+        self.captcha_token = str(cfg.get("captcha_token") or "").strip()
+        self.root_id = str(cfg.get("root_id") or "").strip()
+        self.disable_media_link = _as_bool(cfg.get("disable_media_link"), True)
+        self.enable_direct_download_307 = _as_bool(cfg.get("enable_direct_download_307"), False)
+        self.timeout = float(cfg.get("timeout") or 30)
+
+        ua = platform_cfg.get("ua")
+        self.user_agent = str(ua) if ua else self._build_android_user_agent()
+
+        self._auth_lock = asyncio.Lock()
+        self._config_save_lock = asyncio.Lock()
+        self._dir_id_cache: Dict[str, str] = {}
+        self._children_cache: Dict[str, List[Dict[str, Any]]] = {}
+
+    def get_effective_root(self, sub_path: str | None) -> str:
+        return f"{self.root_id}|{(sub_path or '').strip('/')}"
+
+    def _build_android_user_agent(self) -> str:
+        device_sign = self._generate_device_sign(self.device_id, self.package_name)
+        user_id = self.user_id
+        return (
+            f"ANDROID-{self.package_name}/{self.client_version} "
+            "protocolVersion/200 accesstype/ "
+            f"clientid/{self.client_id} "
+            f"clientversion/{self.client_version} "
+            "action_type/ networktype/WIFI sessionid/ "
+            f"deviceid/{self.device_id} "
+            "providername/NONE "
+            f"devicesign/{device_sign} "
+            "refresh_token/ "
+            f"sdkversion/{self.sdk_version} "
+            f"datetime/{int(time.time() * 1000)} "
+            f"usrno/{user_id} "
+            f"appname/android-{self.package_name} "
+            "session_origin/ grant_type/ appid/ clientip/ "
+            "devicename/Xiaomi_M2004j7ac osversion/13 platformversion/10 "
+            "accessmode/ devicemodel/M2004J7AC "
+        )
+
+    @staticmethod
+    def _generate_device_sign(device_id: str, package_name: str) -> str:
+        sha1_str = _sha1_text(f"{device_id}{package_name}1appkey")
+        md5_str = _md5_text(sha1_str)
+        return f"div101.{device_id}{md5_str}"
+
+    def _captcha_sign(self) -> Tuple[str, str]:
+        timestamp = str(int(time.time() * 1000))
+        value = f"{self.client_id}{self.client_version}{self.package_name}{self.device_id}{timestamp}"
+        for algorithm in self.algorithms:
+            value = _md5_text(value + algorithm)
+        return timestamp, "1." + value
+
+    @staticmethod
+    def _action(method: str, url: str) -> str:
+        m = re.search(r"://[^/]+((/[^/\s?#]+)*)", url)
+        path = m.group(1) if m else "/"
+        return f"{method.upper()}:{path}"
+
+    @staticmethod
+    def _full_action(method: str, url: str) -> str:
+        return f"{method.upper()}:{url}"
+
+    def _captcha_action(self, method: str, url: str, *, auth: bool) -> str:
+        if not auth and url == f"{USER_BASE}/auth/signin":
+            return self._full_action(method, url)
+        return self._action(method, url)
+
+    def _has_valid_access_token(self) -> bool:
+        return bool(self.access_token and self.expires_at > int(time.time()) + TOKEN_REFRESH_BUFFER)
+
+    def _download_headers(self) -> Dict[str, str]:
+        headers = {
+            "User-Agent": self.user_agent,
+            "X-Device-ID": self.device_id,
+            "X-Captcha-Token": self.captcha_token,
+        }
+        if self.access_token:
+            headers["Authorization"] = f"Bearer {self.access_token}"
+        return headers
+
+    async def _save_runtime_config(self):
+        cfg = dict(self.record.config or {})
+        changed = False
+        for key, value in (
+            ("refresh_token", self.refresh_token),
+            ("access_token", self.access_token),
+            ("expires_at", self.expires_at),
+            ("captcha_token", self.captcha_token),
+            ("device_id", self.device_id),
+            ("user_id", self.user_id),
+        ):
+            if value and cfg.get(key) != value:
+                cfg[key] = value
+                changed = True
+        if not changed:
+            return
+        async with self._config_save_lock:
+            self.record.config = cfg
+            await self.record.save(update_fields=["config"])
+
+    async def _ensure_auth(self):
+        if self._has_valid_access_token():
+            return
+        async with self._auth_lock:
+            if self._has_valid_access_token():
+                return
+            if self.refresh_token:
+                try:
+                    await self._refresh_access_token()
+                    return
+                except Exception as e:
+                    self.access_token = ""
+                    raise HTTPException(
+                        502,
+                        detail=f"PikPak refresh token failed, please update refresh_token or login manually: {e}",
+                    )
+            await self._login()
+
+    async def _login(self):
+        url = f"{USER_BASE}/auth/signin"
+        if not self.captcha_token:
+            await self._refresh_captcha_token(self._full_action("POST", url), self._login_captcha_meta())
+
+        body = {
+            "captcha_token": self.captcha_token,
+            "client_id": self.client_id,
+            "client_secret": self.client_secret,
+            "grant_type": "password",
+            "username": self.username,
+            "password": self.password,
+        }
+        data = await self._raw_json("POST", url, json=body, auth=False)
+        self.refresh_token = str(data.get("refresh_token") or "").strip()
+        self.access_token = str(data.get("access_token") or "").strip()
+        self.expires_at = int(time.time()) + _as_int(data.get("expires_in"), 0)
+        self.user_id = str(data.get("sub") or self.user_id).strip()
+        if not self.refresh_token or not self.access_token:
+            raise HTTPException(502, detail="PikPak login failed: missing token")
+        if self.platform == "android" and not PLATFORM_CONFIG[self.platform].get("ua"):
+            self.user_agent = self._build_android_user_agent()
+        await self._save_runtime_config()
+
+    async def _refresh_access_token(self):
+        url = f"{USER_BASE}/auth/token"
+        body = {
+            "client_id": self.client_id,
+            "client_secret": self.client_secret,
+            "grant_type": "refresh_token",
+            "refresh_token": self.refresh_token,
+        }
+        data = await self._raw_json("POST", url, json=body, auth=False)
+        self.refresh_token = str(data.get("refresh_token") or "").strip()
+        self.access_token = str(data.get("access_token") or "").strip()
+        self.expires_at = int(time.time()) + _as_int(data.get("expires_in"), 0)
+        self.user_id = str(data.get("sub") or self.user_id).strip()
+        if not self.refresh_token or not self.access_token:
+            raise HTTPException(502, detail="PikPak refresh token failed: missing token")
+        if self.platform == "android" and not PLATFORM_CONFIG[self.platform].get("ua"):
+            self.user_agent = self._build_android_user_agent()
+        await self._save_runtime_config()
+
+    def _login_captcha_meta(self) -> Dict[str, str]:
+        return {"username": self.username}
+
+    async def _refresh_captcha_token(self, action: str, meta: Dict[str, str]):
+        url = f"{USER_BASE}/shield/captcha/init"
+        body = {
+            "action": action,
+            "captcha_token": self.captcha_token,
+            "client_id": self.client_id,
+            "device_id": self.device_id,
+            "meta": meta,
+            "redirect_uri": "xlaccsdk01://xbase.cloud/callback?state=harbor",
+        }
+        data = await self._raw_json("POST", url, json=body, auth=False)
+        verify_url = str(data.get("url") or "").strip()
+        token = str(data.get("captcha_token") or "").strip()
+        if token and not verify_url:
+            self.captcha_token = token
+            await self._save_runtime_config()
+        if verify_url:
+            raise HTTPException(
+                400,
+                detail=(
+                    "PikPak requires captcha verification. Open the URL, finish verification, "
+                    "then capture the fresh captcha_token from the successful verification request and paste it into the adapter config. URL: "
+                    f"{verify_url}"
+                ),
+            )
+        if not token:
+            raise HTTPException(502, detail="PikPak captcha refresh failed: missing captcha_token")
+        self.captcha_token = token
+        await self._save_runtime_config()
+
+    async def _refresh_captcha_token_after_login(self, method: str, url: str):
+        timestamp, sign = self._captcha_sign()
+        meta = {
+            "client_version": self.client_version,
+            "package_name": self.package_name,
+            "user_id": self.user_id,
+            "timestamp": timestamp,
+            "captcha_sign": sign,
+        }
+        await self._refresh_captcha_token(self._action(method, url), meta)
+
+    async def _raw_json(
+        self,
+        method: str,
+        url: str,
+        *,
+        json: Any | None = None,
+        params: Dict[str, Any] | None = None,
+        auth: bool = True,
+        retry_auth: bool = True,
+        retry_captcha: bool = True,
+    ) -> Dict[str, Any]:
+        if auth:
+            await self._ensure_auth()
+
+        headers = {
+            "User-Agent": self.user_agent,
+            "X-Device-ID": self.device_id,
+            "X-Captcha-Token": self.captcha_token,
+        }
+        if auth and self.access_token:
+            headers["Authorization"] = f"Bearer {self.access_token}"
+
+        async with httpx.AsyncClient(timeout=self.timeout, follow_redirects=True) as client:
+            resp = await client.request(method, url, headers=headers, params=params, json=json)
+
+        payload: Dict[str, Any] = {}
+        try:
+            parsed = resp.json()
+            if isinstance(parsed, dict):
+                payload = parsed
+        except Exception:
+            resp.raise_for_status()
+            return {}
+
+        if auth and retry_auth and resp.status_code in {401, 403}:
+            async with self._auth_lock:
+                await self._refresh_access_token()
+            return await self._raw_json(
+                method,
+                url,
+                json=json,
+                params=params,
+                auth=auth,
+                retry_auth=False,
+                retry_captcha=retry_captcha,
+            )
+
+        error_code = payload.get("error_code")
+        error_msg = payload.get("error") or payload.get("error_description") or payload.get("message")
+        try:
+            code_int = int(error_code or 0)
+        except Exception:
+            code_int = 0
+        has_error = code_int != 0 or bool(error_msg and resp.status_code >= 400)
+
+        if has_error:
+            if auth and retry_auth and code_int in {4122, 4121, 16}:
+                async with self._auth_lock:
+                    await self._refresh_access_token()
+                return await self._raw_json(
+                    method,
+                    url,
+                    json=json,
+                    params=params,
+                    auth=auth,
+                    retry_auth=False,
+                    retry_captcha=retry_captcha,
+                )
+            if code_int == 4002 or error_msg == "captcha_invalid":
+                if retry_captcha:
+                    if auth:
+                        if self.user_id:
+                            await self._refresh_captcha_token_after_login(method, url)
+                        else:
+                            await self._refresh_captcha_token(
+                                self._captcha_action(method, url, auth=auth),
+                                self._login_captcha_meta(),
+                            )
+                    else:
+                        await self._refresh_captcha_token(
+                            self._captcha_action(method, url, auth=auth),
+                            self._login_captcha_meta(),
+                        )
+                    return await self._raw_json(
+                        method,
+                        url,
+                        json=json,
+                        params=params,
+                        auth=auth,
+                        retry_auth=retry_auth,
+                        retry_captcha=False,
+                    )
+                raise HTTPException(
+                    400,
+                    detail=(
+                        "PikPak captcha_invalid. Refresh the captcha token, then retry after solving the verification page."
+                    ),
+                )
+            if auth and retry_captcha and code_int == 9:
+                await self._refresh_captcha_token_after_login(method, url)
+                return await self._raw_json(
+                    method,
+                    url,
+                    json=json,
+                    params=params,
+                    auth=auth,
+                    retry_auth=retry_auth,
+                    retry_captcha=False,
+                )
+            raise HTTPException(502, detail=f"PikPak error code={error_code} msg={error_msg}")
+
+        if resp.status_code >= 400:
+            raise HTTPException(resp.status_code, detail=f"PikPak HTTP error: {payload or resp.text}")
+
+        return payload
+
+    async def _request(
+        self,
+        method: str,
+        path_or_url: str,
+        *,
+        json: Any | None = None,
+        params: Dict[str, Any] | None = None,
+    ) -> Dict[str, Any]:
+        url = path_or_url if path_or_url.startswith("http") else API_BASE + path_or_url
+        return await self._raw_json(method, url, json=json, params=params, auth=True)
+
+    def _map_file_item(self, it: Dict[str, Any]) -> Dict[str, Any]:
+        is_dir = it.get("kind") == "drive#folder"
+        size = 0
+        if not is_dir:
+            try:
+                size = int(it.get("size") or 0)
+            except Exception:
+                size = 0
+        return {
+            "fid": it.get("id"),
+            "id": it.get("id"),
+            "name": it.get("name") or "",
+            "is_dir": is_dir,
+            "size": size,
+            "ctime": _parse_time(it.get("created_time")),
+            "mtime": _parse_time(it.get("modified_time")),
+            "type": "dir" if is_dir else "file",
+            "hash": it.get("hash") or "",
+            "thumbnail_link": it.get("thumbnail_link") or "",
+            "web_content_link": it.get("web_content_link") or "",
+            "medias": it.get("medias") or [],
+        }
+
+    async def _list_children(self, parent_id: str) -> List[Dict[str, Any]]:
+        if parent_id in self._children_cache:
+            return self._children_cache[parent_id]
+
+        items: List[Dict[str, Any]] = []
+        page_token = ""
+        while True:
+            params = {
+                "parent_id": parent_id,
+                "thumbnail_size": "SIZE_LARGE",
+                "with_audit": "true",
+                "limit": "100",
+                "filters": '{"phase":{"eq":"PHASE_TYPE_COMPLETE"},"trashed":{"eq":false}}',
+                "page_token": page_token,
+            }
+            data = await self._request("GET", "/files", params=params)
+            files = data.get("files") or []
+            if isinstance(files, list):
+                items.extend(self._map_file_item(x) for x in files if isinstance(x, dict))
+            page_token = str(data.get("next_page_token") or "")
+            if not page_token:
+                break
+
+        self._children_cache[parent_id] = items
+        return items
+
+    async def _resolve_root_id(self, root: str | None) -> str:
+        root_id, sub_path = _root_payload(root)
+        base_id = root_id or ""
+        if not sub_path:
+            return base_id
+        return await self._resolve_dir_id_from(base_id, sub_path)
+
+    async def _resolve_dir_id_from(self, base_id: str, rel: str) -> str:
+        rel = (rel or "").strip("/")
+        cache_key = f"{base_id}:{rel}"
+        if cache_key in self._dir_id_cache:
+            return self._dir_id_cache[cache_key]
+        if not rel:
+            self._dir_id_cache[cache_key] = base_id
+            return base_id
+
+        parent_id = base_id
+        path_so_far: List[str] = []
+        for seg in rel.split("/"):
+            if not seg:
+                continue
+            path_so_far.append(seg)
+            current_key = f"{base_id}:{'/'.join(path_so_far)}"
+            cached = self._dir_id_cache.get(current_key)
+            if cached is not None:
+                parent_id = cached
+                continue
+            children = await self._list_children(parent_id)
+            found = next((item for item in children if item["is_dir"] and item["name"] == seg), None)
+            if not found:
+                raise FileNotFoundError(rel)
+            parent_id = str(found["fid"])
+            self._dir_id_cache[current_key] = parent_id
+        return parent_id
+
+    async def _find_child(self, parent_id: str, name: str) -> Optional[Dict[str, Any]]:
+        children = await self._list_children(parent_id)
+        return next((item for item in children if item.get("name") == name), None)
+
+    async def _resolve_obj(self, root: str, rel: str) -> Dict[str, Any]:
+        rel = (rel or "").strip("/")
+        base_id = await self._resolve_root_id(root)
+        if not rel:
+            return {"fid": base_id, "id": base_id, "name": "", "is_dir": True, "size": 0, "mtime": 0, "type": "dir"}
+        if rel.endswith("/"):
+            fid = await self._resolve_dir_id_from(base_id, rel.rstrip("/"))
+            return {"fid": fid, "id": fid, "name": rel.rstrip("/").split("/")[-1], "is_dir": True, "size": 0, "mtime": 0, "type": "dir"}
+        parent_rel, name = _split_parent_name(rel)
+        parent_id = await self._resolve_dir_id_from(base_id, parent_rel)
+        item = await self._find_child(parent_id, name)
+        if not item:
+            raise FileNotFoundError(rel)
+        return item
+
+    async def _resolve_parent_and_obj(self, root: str, rel: str) -> Tuple[str, Dict[str, Any]]:
+        base_id = await self._resolve_root_id(root)
+        parent_rel, name = _split_parent_name(rel)
+        parent_id = await self._resolve_dir_id_from(base_id, parent_rel)
+        item = await self._find_child(parent_id, name)
+        if not item:
+            raise FileNotFoundError(rel)
+        return parent_id, item
+
+    def _invalidate_children_cache(self, parent_id: str):
+        self._children_cache.pop(parent_id, None)
+
+    def _clear_path_cache(self):
+        self._dir_id_cache.clear()
+
+    async def list_dir(
+        self,
+        root: str,
+        rel: str,
+        page_num: int = 1,
+        page_size: int = 50,
+        sort_by: str = "name",
+        sort_order: str = "asc",
+    ) -> Tuple[List[Dict], int]:
+        base_id = await self._resolve_root_id(root)
+        target_id = await self._resolve_dir_id_from(base_id, rel)
+        items = list(await self._list_children(target_id))
+
+        reverse = sort_order.lower() == "desc"
+
+        def sort_key(item: Dict[str, Any]) -> Tuple:
+            key = (not item.get("is_dir"),)
+            field = sort_by.lower()
+            if field == "size":
+                key += (int(item.get("size") or 0),)
+            elif field == "mtime":
+                key += (int(item.get("mtime") or 0),)
+            else:
+                key += (str(item.get("name") or "").lower(),)
+            return key
+
+        items.sort(key=sort_key, reverse=reverse)
+        total = len(items)
+        start = max(page_num - 1, 0) * page_size
+        return items[start : start + page_size], total
+
+    async def stat_file(self, root: str, rel: str):
+        return await self._resolve_obj(root, rel)
+
+    async def stat_path(self, root: str, rel: str):
+        try:
+            item = await self._resolve_obj(root, rel)
+            return {"exists": True, "is_dir": bool(item.get("is_dir")), "path": rel, "fid": item.get("fid")}
+        except FileNotFoundError:
+            return {"exists": False, "is_dir": None, "path": rel}
+
+    async def exists(self, root: str, rel: str) -> bool:
+        try:
+            await self._resolve_obj(root, rel)
+            return True
+        except FileNotFoundError:
+            return False
+
+    async def _get_remote_file(self, file_id: str) -> Dict[str, Any]:
+        params = {"_magic": "2021", "usage": "FETCH", "thumbnail_size": "SIZE_LARGE"}
+        if not self.disable_media_link:
+            params["usage"] = "CACHE"
+        return await self._request("GET", f"/files/{file_id}", params=params)
+
+    async def _get_download_url(self, item: Dict[str, Any]) -> str:
+        file_id = str(item.get("fid") or item.get("id") or "")
+        if not file_id:
+            raise FileNotFoundError(item.get("name") or "")
+        data = await self._get_remote_file(file_id)
+        url = str(data.get("web_content_link") or "").strip()
+        medias = data.get("medias") or []
+        if not self.disable_media_link and isinstance(medias, list) and medias:
+            first = medias[0]
+            if isinstance(first, dict):
+                media_url = str(((first.get("link") or {}).get("url") if isinstance(first.get("link"), dict) else "") or "")
+                if media_url:
+                    url = media_url
+        if not url:
+            raise HTTPException(502, detail="PikPak did not return download url")
+        return url
+
+    async def read_file(self, root: str, rel: str) -> bytes:
+        item = await self._resolve_obj(root, rel)
+        if item.get("is_dir"):
+            raise IsADirectoryError(rel)
+        url = await self._get_download_url(item)
+        async with httpx.AsyncClient(timeout=None, follow_redirects=True) as client:
+            resp = await client.get(url, headers=self._download_headers())
+            if resp.status_code == 404:
+                raise FileNotFoundError(rel)
+            resp.raise_for_status()
+            return resp.content
+
+    async def read_file_range(self, root: str, rel: str, start: int, end: Optional[int] = None) -> bytes:
+        item = await self._resolve_obj(root, rel)
+        if item.get("is_dir"):
+            raise IsADirectoryError(rel)
+        url = await self._get_download_url(item)
+        headers = self._download_headers()
+        headers["Range"] = f"bytes={start}-" if end is None else f"bytes={start}-{end}"
+        async with httpx.AsyncClient(timeout=self.timeout, follow_redirects=True) as client:
+            resp = await client.get(url, headers=headers)
+            if resp.status_code == 404:
+                raise FileNotFoundError(rel)
+            if resp.status_code == 416:
+                raise HTTPException(416, detail="Requested Range Not Satisfiable")
+            resp.raise_for_status()
+            return resp.content
+
+    async def stream_file(self, root: str, rel: str, range_header: str | None):
+        item = await self._resolve_obj(root, rel)
+        if item.get("is_dir"):
+            raise IsADirectoryError(rel)
+        url = await self._get_download_url(item)
+        file_size = int(item.get("size") or 0)
+        mime, _ = mimetypes.guess_type(rel)
+        content_type = mime or "application/octet-stream"
+
+        start = 0
+        end = file_size - 1 if file_size > 0 else None
+        status_code = 200
+        if range_header and range_header.startswith("bytes="):
+            status_code = 206
+            part = range_header.split("=", 1)[1]
+            s, _, e = part.partition("-")
+            if s.strip():
+                start = int(s)
+            if e.strip():
+                end = int(e)
+            elif file_size > 0:
+                end = file_size - 1
+            if file_size > 0:
+                if start >= file_size:
+                    raise HTTPException(416, detail="Requested Range Not Satisfiable")
+                if end is None or end >= file_size:
+                    end = file_size - 1
+                if start > end:
+                    raise HTTPException(416, detail="Requested Range Not Satisfiable")
+
+        resp_headers = {"Accept-Ranges": "bytes", "Content-Type": content_type}
+        if file_size > 0:
+            if status_code == 206 and end is not None:
+                resp_headers["Content-Range"] = f"bytes {start}-{end}/{file_size}"
+                resp_headers["Content-Length"] = str(end - start + 1)
+            else:
+                resp_headers["Content-Length"] = str(file_size)
+
+        async def iterator():
+            headers = self._download_headers()
+            if status_code == 206 and end is not None:
+                headers["Range"] = f"bytes={start}-{end}"
+            async with httpx.AsyncClient(timeout=None, follow_redirects=True) as client:
+                async with client.stream("GET", url, headers=headers) as resp:
+                    if resp.status_code == 404:
+                        raise FileNotFoundError(rel)
+                    if resp.status_code == 416:
+                        raise HTTPException(416, detail="Requested Range Not Satisfiable")
+                    resp.raise_for_status()
+                    async for chunk in resp.aiter_bytes():
+                        if chunk:
+                            yield chunk
+
+        return StreamingResponse(iterator(), status_code=status_code, headers=resp_headers, media_type=content_type)
+
+    async def get_direct_download_response(self, root: str, rel: str):
+        if not self.enable_direct_download_307:
+            return None
+        item = await self._resolve_obj(root, rel)
+        if item.get("is_dir"):
+            return None
+        url = await self._get_download_url(item)
+        return Response(status_code=307, headers={"Location": url})
+
+    async def get_thumbnail(self, root: str, rel: str, size: str = "medium"):
+        item = await self._resolve_obj(root, rel)
+        url = str(item.get("thumbnail_link") or "").strip()
+        if not url:
+            return None
+        async with httpx.AsyncClient(timeout=self.timeout, follow_redirects=True) as client:
+            resp = await client.get(url, headers=self._download_headers())
+            if resp.status_code >= 400:
+                return None
+            return resp.content
+
+    async def get_usage(self, root: str):
+        data = await self._request("GET", "/about")
+        quota = data.get("quota") or {}
+        limit = quota.get("limit")
+        usage = quota.get("usage")
+        total = int(limit) if limit is not None else None
+        used = int(usage) if usage is not None else None
+        return {
+            "used_bytes": used,
+            "total_bytes": total,
+            "free_bytes": total - used if total is not None and used is not None else None,
+            "source": "pikpak",
+            "scope": "drive",
+        }
+
+    async def mkdir(self, root: str, rel: str):
+        rel = (rel or "").strip("/")
+        if not rel:
+            raise HTTPException(400, detail="Cannot create root")
+        parent_rel, name = _split_parent_name(rel)
+        if not name:
+            raise HTTPException(400, detail="Invalid directory name")
+        base_id = await self._resolve_root_id(root)
+        parent_id = await self._resolve_dir_id_from(base_id, parent_rel)
+        await self._request("POST", "/files", json={"kind": "drive#folder", "parent_id": parent_id, "name": name})
+        self._invalidate_children_cache(parent_id)
+
+    async def delete(self, root: str, rel: str):
+        parent_id, item = await self._resolve_parent_and_obj(root, rel)
+        await self._request("POST", "/files:batchTrash", json={"ids": [item["fid"]]})
+        self._invalidate_children_cache(parent_id)
+        if item.get("is_dir"):
+            self._clear_path_cache()
+
+    async def move(self, root: str, src_rel: str, dst_rel: str):
+        src_parent_id, item = await self._resolve_parent_and_obj(root, src_rel)
+        base_id = await self._resolve_root_id(root)
+        dst_parent_rel, dst_name = _split_parent_name(dst_rel)
+        dst_parent_id = await self._resolve_dir_id_from(base_id, dst_parent_rel)
+
+        if src_parent_id != dst_parent_id:
+            await self._request("POST", "/files:batchMove", json={"ids": [item["fid"]], "to": {"parent_id": dst_parent_id}})
+            self._invalidate_children_cache(src_parent_id)
+            self._invalidate_children_cache(dst_parent_id)
+
+        if item.get("name") != dst_name:
+            await self._request("PATCH", f"/files/{item['fid']}", json={"name": dst_name})
+            self._invalidate_children_cache(dst_parent_id)
+
+        if item.get("is_dir"):
+            self._clear_path_cache()
+
+    async def rename(self, root: str, src_rel: str, dst_rel: str):
+        await self.move(root, src_rel, dst_rel)
+
+    async def copy(self, root: str, src_rel: str, dst_rel: str, overwrite: bool = False):
+        src_parent_id, item = await self._resolve_parent_and_obj(root, src_rel)
+        base_id = await self._resolve_root_id(root)
+        dst_parent_rel, dst_name = _split_parent_name(dst_rel)
+        dst_parent_id = await self._resolve_dir_id_from(base_id, dst_parent_rel)
+        await self._request("POST", "/files:batchCopy", json={"ids": [item["fid"]], "to": {"parent_id": dst_parent_id}})
+        self._invalidate_children_cache(dst_parent_id)
+
+        if item.get("name") != dst_name:
+            children = await self._list_children(dst_parent_id)
+            copied_candidates = [x for x in children if x.get("name") == item.get("name") and x.get("fid") != item.get("fid")]
+            copied = None
+            if copied_candidates:
+                copied_candidates.sort(key=lambda x: (int(x.get("ctime") or 0), int(x.get("mtime") or 0)), reverse=True)
+                copied = copied_candidates[0]
+            if copied:
+                await self._request("PATCH", f"/files/{copied['fid']}", json={"name": dst_name})
+                self._invalidate_children_cache(dst_parent_id)
+        if item.get("is_dir"):
+            self._clear_path_cache()
+        _ = src_parent_id
+
+    async def write_file(self, root: str, rel: str, data: bytes):
+        raise HTTPException(501, detail="PikPak upload not implemented")
+
+    async def write_file_stream(self, root: str, rel: str, data_iter: AsyncIterator[bytes]):
+        raise HTTPException(501, detail="PikPak upload not implemented")
+
+    async def write_upload_file(
+        self,
+        root: str,
+        rel: str,
+        file_obj,
+        filename: str | None,
+        file_size: int | None = None,
+        content_type: str | None = None,
+    ):
+        raise HTTPException(501, detail="PikPak upload not implemented")
+
+
+ADAPTER_TYPE = "pikpak"
+
+CONFIG_SCHEMA = [
+    {"key": "username", "label": "PikPak 账号", "type": "string", "required": True},
+    {"key": "password", "label": "PikPak 密码", "type": "password", "required": True},
+    {"key": "platform", "label": "平台", "type": "select", "required": False, "default": "android", "options": ["android", "web", "pc"]},
+    {"key": "refresh_token", "label": "Refresh Token", "type": "password", "required": False},
+    {"key": "access_token", "label": "Access Token", "type": "password", "required": False},
+    {"key": "expires_at", "label": "Access Token 过期时间戳", "type": "number", "required": False},
+    {"key": "captcha_token", "label": "Captcha Token", "type": "password", "required": False},
+    {"key": "device_id", "label": "Device ID", "type": "string", "required": False},
+    {"key": "root_id", "label": "根目录 ID", "type": "string", "required": False, "default": ""},
+    {"key": "disable_media_link", "label": "禁用媒体转码链接", "type": "boolean", "required": False, "default": True},
+    {"key": "enable_direct_download_307", "label": "直链 307 跳转", "type": "boolean", "required": False, "default": False},
+]
+
+
+def ADAPTER_FACTORY(rec: StorageAdapter) -> BaseAdapter:
+    return PikPakAdapter(rec)

domain/adapters/providers/quark.py

@@ -840,6 +840,23 @@ class QuarkAdapter:
     async def copy(self, root: str, src_rel: str, dst_rel: str, overwrite: bool = False):
         raise NotImplementedError("QuarkOpen does not support copy via open API")
 
+    async def get_usage(self, root: str):
+        data = await self._request("GET", "/capacity/growth/info")
+        payload = (data or {}).get("data") or {}
+        if isinstance(payload.get("member"), dict):
+            payload = payload["member"]
+        used = payload.get("use_capacity") or payload.get("used_capacity")
+        total = payload.get("total_capacity")
+        used_bytes = int(used) if used is not None else None
+        total_bytes = int(total) if total is not None else None
+        return {
+            "used_bytes": used_bytes,
+            "total_bytes": total_bytes,
+            "free_bytes": total_bytes - used_bytes if total_bytes is not None and used_bytes is not None else None,
+            "source": "quark",
+            "scope": "account",
+        }
+
     # -----------------
     # STAT / EXISTS / 辅助
     # -----------------

domain/adapters/providers/telegram.py

@@ -1,26 +1,15 @@
-from typing import List, Dict, Tuple, AsyncIterator
+from typing import List, Dict, Tuple, AsyncIterator, Optional
-import asyncio
 import base64
 import io
 import os
 import struct
 from models import StorageAdapter
-from telethon import TelegramClient
+from telethon import TelegramClient, utils
 from telethon.crypto import AuthKey
 from telethon.sessions import StringSession
 from telethon.tl import types
 import socks
 
-_SESSION_LOCKS: Dict[str, asyncio.Lock] = {}
-
-
-def _get_session_lock(session_string: str) -> asyncio.Lock:
-    lock = _SESSION_LOCKS.get(session_string)
-    if lock is None:
-        lock = asyncio.Lock()
-        _SESSION_LOCKS[session_string] = lock
-    return lock
-
 
 class _NamedFile:
     def __init__(self, file_obj, name: str):
@@ -61,6 +50,7 @@ CONFIG_SCHEMA = [
 
 class TelegramAdapter:
     """Telegram 存储适配器 (使用用户 Session)"""
+    native_video_thumbnail_only = True
 
     def __init__(self, record: StorageAdapter):
         self.record = record
@@ -132,29 +122,42 @@ class TelegramAdapter:
             return None
 
         cached = []
-        others = []
+        downloadable = []
         for t in thumbs:
             if isinstance(t, (types.PhotoCachedSize, types.PhotoStrippedSize)):
                 cached.append(t)
             elif isinstance(t, (types.PhotoSize, types.PhotoSizeProgressive)):
                 if not isinstance(t, types.PhotoSizeEmpty):
-                    others.append(t)
+                    downloadable.append(t)
 
-        if cached:
+        if downloadable:
-            cached.sort(key=lambda x: len(getattr(x, "bytes", b"") or b""))
-            return cached[-1]
-
-        if others:
             def _sz(x):
                 if isinstance(x, types.PhotoSizeProgressive):
                     return max(x.sizes or [0])
                 return int(getattr(x, "size", 0) or 0)
 
-            others.sort(key=_sz)
+            downloadable.sort(key=_sz)
-            return others[-1]
+            return downloadable[-1]
+
+        if cached:
+            cached.sort(key=lambda x: len(getattr(x, "bytes", b"") or b""))
+            return cached[-1]
 
         return None
 
+    @staticmethod
+    def _get_message_thumbs(message) -> list:
+        doc = message.document or message.video
+        if doc and getattr(doc, "thumbs", None):
+            return list(doc.thumbs or [])
+        if message.photo and getattr(message.photo, "sizes", None):
+            return list(message.photo.sizes or [])
+        return []
+
+    @classmethod
+    def _message_has_thumbnail(cls, message) -> bool:
+        return cls._pick_photo_thumb(cls._get_message_thumbs(message)) is not None
+
     def _build_session(self) -> StringSession:
         s = (self.session_string or "").strip()
         if not s:
@@ -181,6 +184,14 @@ class TelegramAdapter:
         """创建一个新的 TelegramClient 实例"""
         return TelegramClient(self._build_session(), self.api_id, self.api_hash, proxy=self.proxy)
 
+    @staticmethod
+    def _parse_message_id(rel: str) -> int:
+        try:
+            message_id_str, _ = rel.split('_', 1)
+            return int(message_id_str)
+        except (ValueError, IndexError):
+            raise FileNotFoundError(f"无效的文件路径格式: {rel}")
+
     def get_effective_root(self, sub_path: str | None) -> str:
         return ""
 
@@ -229,6 +240,7 @@ class TelegramAdapter:
                     "size": size,
                     "mtime": int(message.date.timestamp()),
                     "type": "file",
+                    "has_thumbnail": self._message_has_thumbnail(message),
                 })
         finally:
             if client.is_connected():
@@ -260,11 +272,7 @@ class TelegramAdapter:
         return page_entries, total_count
 
     async def read_file(self, root: str, rel: str) -> bytes:
-        try:
+        message_id = self._parse_message_id(rel)
-            message_id_str, _ = rel.split('_', 1)
-            message_id = int(message_id_str)
-        except (ValueError, IndexError):
-            raise FileNotFoundError(f"无效的文件路径格式: {rel}")
 
         client = self._get_client()
         try:
@@ -279,6 +287,50 @@ class TelegramAdapter:
             if client.is_connected():
                 await client.disconnect()
 
+    async def read_file_range(self, root: str, rel: str, start: int, end: Optional[int] = None) -> bytes:
+        from fastapi import HTTPException
+
+        message_id = self._parse_message_id(rel)
+        client = self._get_client()
+        try:
+            await client.connect()
+            message = await client.get_messages(self.chat_id, ids=message_id)
+            if not message:
+                raise FileNotFoundError(f"在频道 {self.chat_id} 中未找到消息ID为 {message_id} 的文件")
+
+            media = message.document or message.video or message.photo
+            if not media:
+                raise FileNotFoundError(f"在频道 {self.chat_id} 中未找到消息ID为 {message_id} 的文件")
+
+            file_meta = message.file
+            file_size = file_meta.size if file_meta and file_meta.size is not None else getattr(media, "size", 0) or 0
+            if file_size > 0:
+                if start >= file_size:
+                    raise HTTPException(status_code=416, detail="Requested Range Not Satisfiable")
+                if end is None or end >= file_size:
+                    end = file_size - 1
+            elif end is None:
+                end = start
+
+            if end < start:
+                raise HTTPException(status_code=416, detail="Requested Range Not Satisfiable")
+
+            limit = end - start + 1
+            data = bytearray()
+            async for chunk in client.iter_download(media, offset=start):
+                if not chunk:
+                    continue
+                need = limit - len(data)
+                if need <= 0:
+                    break
+                data.extend(chunk[:need])
+                if len(data) >= limit:
+                    break
+            return bytes(data)
+        finally:
+            if client.is_connected():
+                await client.disconnect()
+
     async def write_file(self, root: str, rel: str, data: bytes):
         """将字节数据作为文件上传"""
         client = self._get_client()
@@ -386,17 +438,16 @@ class TelegramAdapter:
             if not message:
                 return None
 
-            doc = message.document or message.video
+            thumb = self._pick_photo_thumb(self._get_message_thumbs(message))
-            thumbs = None
-            if doc and getattr(doc, "thumbs", None):
-                thumbs = list(doc.thumbs or [])
-            elif message.photo and getattr(message.photo, "sizes", None):
-                thumbs = list(message.photo.sizes or [])
-
-            thumb = self._pick_photo_thumb(thumbs)
             if not thumb:
                 return None
 
+            embedded = getattr(thumb, "bytes", None)
+            if embedded and isinstance(thumb, types.PhotoCachedSize):
+                return bytes(embedded)
+            if embedded and isinstance(thumb, types.PhotoStrippedSize):
+                return utils.stripped_photo_to_jpg(bytes(embedded))
+
             result = await client.download_media(message, bytes, thumb=thumb)
             if isinstance(result, (bytes, bytearray)):
                 return bytes(result)
@@ -439,20 +490,19 @@ class TelegramAdapter:
         from fastapi import HTTPException
 
         try:
-            message_id_str, _ = rel.split('_', 1)
+            message_id = self._parse_message_id(rel)
-            message_id = int(message_id_str)
+        except FileNotFoundError:
-        except (ValueError, IndexError):
             raise HTTPException(status_code=400, detail=f"无效的文件路径格式: {rel}")
 
         client = self._get_client()
-        lock = _get_session_lock(self.session_string)
-        await lock.acquire()
         
         try:
             await client.connect()
             message = await client.get_messages(self.chat_id, ids=message_id)
+            if not message:
+                raise FileNotFoundError(f"在频道 {self.chat_id} 中未找到消息ID为 {message_id} 的文件")
             media = message.document or message.video or message.photo
-            if not message or not media:
+            if not media:
                 raise FileNotFoundError(f"在频道 {self.chat_id} 中未找到消息ID为 {message_id} 的文件")
 
             file_meta = message.file
@@ -486,6 +536,12 @@ class TelegramAdapter:
                 "Content-Type": mime_type,
             }
 
+            if file_size <= 0:
+                headers["Content-Length"] = "0"
+                if client.is_connected():
+                    await client.disconnect()
+                return StreamingResponse(iter(()), status_code=status, headers=headers)
+
             if range_header:
                 try:
                     range_val = range_header.strip().partition("=")[2]
@@ -499,6 +555,8 @@ class TelegramAdapter:
                 except ValueError:
                     raise HTTPException(status_code=400, detail="Invalid Range header")
 
+            headers["Content-Length"] = str(end - start + 1)
+
             async def iterator():
                 try:
                     limit = end - start + 1
@@ -513,28 +571,22 @@ class TelegramAdapter:
                         if downloaded >= limit:
                             break
                 finally:
-                    try:
+                    if client.is_connected():
-                        if client.is_connected():
+                        await client.disconnect()
-                            await client.disconnect()
-                    finally:
-                        lock.release()
 
             return StreamingResponse(iterator(), status_code=status, headers=headers)
 
         except HTTPException:
             if client.is_connected():
                 await client.disconnect()
-            lock.release()
             raise
         except FileNotFoundError as e:
             if client.is_connected():
                 await client.disconnect()
-            lock.release()
             raise HTTPException(status_code=404, detail=str(e))
         except Exception as e:
             if client.is_connected():
                 await client.disconnect()
-            lock.release()
             raise HTTPException(status_code=500, detail=f"Streaming failed: {str(e)}")
 
     async def stat_file(self, root: str, rel: str):
@@ -569,6 +621,7 @@ class TelegramAdapter:
                 "size": size,
                 "mtime": int(message.date.timestamp()),
                 "type": "file",
+                "has_thumbnail": self._message_has_thumbnail(message),
             }
         finally:
             if client.is_connected():

domain/adapters/providers/webdav.py

@@ -376,7 +376,7 @@ class WebDAVAdapter:
 
         return StreamingResponse(segmented_body(), status_code=status_code, headers=resp_headers, media_type=content_type)
 
-    async def stat_file(self, root: str, rel: str):
+    async def stat_file(self, root: str, rel: str, include_metadata: bool = False):
         url = self._build_url(rel)
         async with self._client() as client:
             # PROPFIND 获取属性
@@ -426,9 +426,8 @@ class WebDAVAdapter:
                         info["mtime"] = 0
                 elif info["mtime"] is None:
                     info["mtime"] = 0
-            # exif信息
+            if include_metadata and not info["is_dir"]:
-            exif = None
+                exif = None
-            if not info["is_dir"]:
                 mime, _ = mimetypes.guess_type(info["name"])
                 if mime and mime.startswith("image/"):
                     try:
@@ -442,7 +441,7 @@ class WebDAVAdapter:
                                 exif = {str(k): str(v) for k, v in exif_data.items()}
                     except Exception:
                         exif = None
-            info["exif"] = exif
+                info["exif"] = exif
             return info
 
     async def exists(self, root: str, rel: str) -> bool:

domain/adapters/service.py

@@ -1,3 +1,4 @@
+import time
 from typing import Optional
 
 from fastapi import HTTPException
@@ -8,11 +9,34 @@ from .registry import (
     normalize_adapter_type,
     runtime_registry,
 )
-from .types import AdapterCreate, AdapterOut
+from .types import AdapterCreate, AdapterOut, AdapterUsage
+from .providers.base import UsageCapableAdapter
 from models import StorageAdapter
 
 
 class AdapterService:
+    _usage_cache_ttl = 3600
+    _usage_cache: dict[int, tuple[float, AdapterUsage]] = {}
+
+    @classmethod
+    def _get_cached_usage(cls, adapter_id: int) -> AdapterUsage | None:
+        cached = cls._usage_cache.get(adapter_id)
+        if not cached:
+            return None
+        expires_at, usage = cached
+        if expires_at <= time.time():
+            cls._usage_cache.pop(adapter_id, None)
+            return None
+        return usage
+
+    @classmethod
+    def _set_cached_usage(cls, usage: AdapterUsage):
+        cls._usage_cache[usage.id] = (time.time() + cls._usage_cache_ttl, usage)
+
+    @classmethod
+    def _clear_cached_usage(cls, adapter_id: int):
+        cls._usage_cache.pop(adapter_id, None)
+
     @classmethod
     def _validate_and_normalize_config(cls, adapter_type: str, cfg):
         schemas = get_config_schemas()
@@ -85,6 +109,74 @@ class AdapterService:
             raise HTTPException(404, detail="Not found")
         return AdapterOut.model_validate(rec)
 
+    @classmethod
+    def _unsupported_usage(cls, rec: StorageAdapter, reason: str) -> AdapterUsage:
+        return AdapterUsage(
+            id=rec.id,
+            name=rec.name,
+            type=rec.type,
+            path=rec.path,
+            supported=False,
+            reason=reason,
+        )
+
+    @classmethod
+    async def get_adapter_usage(cls, adapter_id: int) -> AdapterUsage:
+        rec = await StorageAdapter.get_or_none(id=adapter_id)
+        if not rec:
+            raise HTTPException(404, detail="Not found")
+        return await cls._get_adapter_usage_for_record(rec)
+
+    @classmethod
+    async def _get_adapter_usage_for_record(cls, rec: StorageAdapter) -> AdapterUsage:
+        cached = cls._get_cached_usage(rec.id)
+        if cached:
+            return cached
+
+        if not rec.enabled:
+            return cls._unsupported_usage(rec, "adapter_disabled")
+
+        adapter = runtime_registry.get(rec.id)
+        if not adapter:
+            await runtime_registry.refresh()
+            adapter = runtime_registry.get(rec.id)
+        if not adapter:
+            return cls._unsupported_usage(rec, "adapter_unavailable")
+        if not isinstance(adapter, UsageCapableAdapter):
+            return cls._unsupported_usage(rec, "adapter_not_implemented")
+
+        root = adapter.get_effective_root(rec.sub_path)
+        try:
+            raw_usage = await adapter.get_usage(root)
+        except Exception as e:
+            return cls._unsupported_usage(rec, f"usage_failed: {e}")
+
+        if not isinstance(raw_usage, dict):
+            return cls._unsupported_usage(rec, "invalid_usage_response")
+
+        usage = AdapterUsage(
+            id=rec.id,
+            name=rec.name,
+            type=rec.type,
+            path=rec.path,
+            supported=True,
+            used_bytes=raw_usage.get("used_bytes"),
+            total_bytes=raw_usage.get("total_bytes"),
+            free_bytes=raw_usage.get("free_bytes"),
+            source=raw_usage.get("source") or rec.type,
+            scope=raw_usage.get("scope"),
+        )
+        cls._set_cached_usage(usage)
+        return usage
+
+    @classmethod
+    async def list_adapter_usages(cls):
+        adapters = await StorageAdapter.all()
+        result = []
+        for rec in adapters:
+            result.append(await cls._get_adapter_usage_for_record(rec))
+        return result
+
     @classmethod
     async def update_adapter(cls, adapter_id: int, data: AdapterCreate, current_user: Optional[User]):
         rec = await StorageAdapter.get_or_none(id=adapter_id)
@@ -105,6 +197,7 @@ class AdapterService:
         await rec.save()
 
         await runtime_registry.upsert(rec)
+        cls._clear_cached_usage(adapter_id)
         return AdapterOut.model_validate(rec)
 
     @classmethod
@@ -113,4 +206,5 @@ class AdapterService:
         if not deleted:
             raise HTTPException(404, detail="Not found")
         runtime_registry.remove(adapter_id)
+        cls._clear_cached_usage(adapter_id)
         return {"deleted": True}

domain/adapters/types.py

@@ -48,3 +48,17 @@ class AdapterOut(AdapterBase):
 
     class Config:
         from_attributes = True
+
+
+class AdapterUsage(BaseModel):
+    id: int
+    name: str
+    type: str
+    path: str
+    supported: bool
+    used_bytes: Optional[int] = None
+    total_bytes: Optional[int] = None
+    free_bytes: Optional[int] = None
+    source: Optional[str] = None
+    scope: Optional[str] = None
+    reason: Optional[str] = None

domain/agent/__init__.py

@@ -1,9 +1,10 @@
 from .service import AgentService
-from .types import AgentChatContext, AgentChatRequest, PendingToolCall
+from .types import AgentChatContext, AgentChatRequest, McpCall, PendingMcpCall
 
 __all__ = [
     "AgentService",
     "AgentChatContext",
     "AgentChatRequest",
-    "PendingToolCall",
+    "McpCall",
+    "PendingMcpCall",
 ]

domain/agent/api.py

@@ -14,7 +14,7 @@ router = APIRouter(prefix="/api/agent", tags=["agent"])
 
 
 @router.post("/chat")
-@audit(action=AuditAction.CREATE, description="Agent 对话", body_fields=["auto_execute"])
+@audit(action=AuditAction.CREATE, description="Agent 对话", body_fields=["auto_execute", "approved_mcp_call_ids", "rejected_mcp_call_ids"])
 async def chat(
     request: Request,
     payload: AgentChatRequest,
@@ -25,7 +25,7 @@ async def chat(
 
 
 @router.post("/chat/stream")
-@audit(action=AuditAction.CREATE, description="Agent 对话（SSE）", body_fields=["auto_execute"])
+@audit(action=AuditAction.CREATE, description="Agent 对话（SSE）", body_fields=["auto_execute", "approved_mcp_call_ids", "rejected_mcp_call_ids"])
 async def chat_stream(
     request: Request,
     payload: AgentChatRequest,

domain/agent/mcp.py

@@ -0,0 +1,334 @@
+import inspect
+import json
+from contextlib import asynccontextmanager
+from datetime import timedelta
+from typing import Annotated, Any, Literal
+from urllib.parse import quote, unquote
+
+import httpx
+from mcp import ClientSession
+from mcp.client.streamable_http import streamablehttp_client
+from mcp.server.auth.provider import AccessToken
+from mcp.server.fastmcp import Context, FastMCP
+from mcp.server.fastmcp.server import AuthSettings
+from mcp.types import ToolAnnotations
+from pydantic import Field
+
+from domain.auth import AuthService, User
+from domain.processors import ProcessorService
+
+from .tools import get_tool, mcp_tool_descriptors
+from .tools.base import McpToolDescriptor, normalize_tool_result, tool_result_to_content
+
+INTERNAL_MCP_BASE_URL = "http://127.0.0.1:8000/"
+CURRENT_PATH_HEADER = "x-foxel-current-path"
+
+
+def _normalize_path(path: str | None) -> str | None:
+    if not path:
+        return None
+    value = str(path).strip().replace("\\", "/")
+    if not value:
+        return None
+    if not value.startswith("/"):
+        value = "/" + value
+    return value.rstrip("/") or "/"
+
+
+def _header_current_path(ctx: Context | None) -> str | None:
+    request = ctx.request_context.request if ctx and ctx.request_context else None
+    if request is None:
+        return None
+    return _normalize_path(request.headers.get(CURRENT_PATH_HEADER))
+
+
+def _field_annotation(schema: dict[str, Any], required: bool) -> tuple[Any, Any]:
+    raw_type = schema.get("type")
+    enum_values = schema.get("enum")
+    description = str(schema.get("description") or "").strip() or None
+    default = schema.get("default", inspect.Parameter.empty if required else None)
+
+    annotation: Any
+    if isinstance(enum_values, list) and enum_values:
+        annotation = Literal.__getitem__(tuple(enum_values))
+    elif raw_type == "string":
+        annotation = str
+    elif raw_type == "integer":
+        annotation = int
+    elif raw_type == "number":
+        annotation = float
+    elif raw_type == "boolean":
+        annotation = bool
+    elif raw_type == "array":
+        annotation = list[Any]
+    elif raw_type == "object":
+        annotation = dict[str, Any]
+    else:
+        annotation = Any
+
+    if not required and default is None:
+        annotation = annotation | None
+
+    if description:
+        annotation = Annotated[annotation, Field(description=description)]
+    return annotation, default
+
+
+def _build_tool_signature(descriptor: McpToolDescriptor) -> inspect.Signature:
+    schema = descriptor.input_schema if isinstance(descriptor.input_schema, dict) else {}
+    properties = schema.get("properties") if isinstance(schema.get("properties"), dict) else {}
+    required = set(schema.get("required") or [])
+    parameters: list[inspect.Parameter] = []
+    for key, value in properties.items():
+        prop_schema = value if isinstance(value, dict) else {}
+        annotation, default = _field_annotation(prop_schema, key in required)
+        parameters.append(
+            inspect.Parameter(
+                str(key),
+                inspect.Parameter.POSITIONAL_OR_KEYWORD,
+                default=default,
+                annotation=annotation,
+            )
+        )
+    return inspect.Signature(parameters=parameters, return_annotation=dict[str, Any])
+
+
+def _build_tool_wrapper(descriptor: McpToolDescriptor):
+    async def wrapper(**kwargs: Any) -> dict[str, Any]:
+        spec = get_tool(descriptor.name)
+        if not spec:
+            return normalize_tool_result({"error": f"unknown_tool: {descriptor.name}"})
+        try:
+            result = await spec.handler(kwargs)
+            return normalize_tool_result(result)
+        except Exception as exc:  # noqa: BLE001
+            return normalize_tool_result({"error": str(exc)})
+
+    wrapper.__name__ = descriptor.name
+    wrapper.__doc__ = descriptor.description
+    wrapper.__signature__ = _build_tool_signature(descriptor)
+    return wrapper
+
+
+class FoxelMcpTokenVerifier:
+    async def verify_token(self, token: str) -> AccessToken | None:
+        try:
+            user = await AuthService.get_current_active_user(await AuthService.get_current_user(token))
+        except Exception:  # noqa: BLE001
+            return None
+        return AccessToken(token=token, client_id=user.username, scopes=[])
+
+
+MCP_SERVER = FastMCP(
+    name="Foxel MCP",
+    instructions="Foxel 内置 MCP 服务，提供文件系统、网页抓取、时间与处理器相关能力。",
+    streamable_http_path="/",
+    token_verifier=FoxelMcpTokenVerifier(),
+    auth=AuthSettings(
+        issuer_url="http://127.0.0.1:8000",
+        resource_server_url=None,
+        required_scopes=[],
+    ),
+)
+
+
+for descriptor in mcp_tool_descriptors():
+    MCP_SERVER.add_tool(
+        _build_tool_wrapper(descriptor),
+        name=descriptor.name,
+        description=descriptor.description,
+        annotations=ToolAnnotations.model_validate(descriptor.annotations),
+        meta=descriptor.meta,
+        structured_output=False,
+    )
+
+
+@MCP_SERVER.resource(
+    "foxel://context/current-path",
+    name="current_path",
+    title="Current Path",
+    description="返回当前请求上下文里的文件管理目录。",
+    mime_type="application/json",
+)
+def current_path_resource() -> dict[str, Any]:
+    return {"current_path": None}
+
+
+@MCP_SERVER.resource(
+    "foxel://policy/tool-confirmation",
+    name="tool_confirmation_policy",
+    title="Tool Confirmation Policy",
+    description="返回 Foxel agent 对工具审批的策略。",
+    mime_type="application/json",
+)
+def tool_confirmation_policy_resource() -> dict[str, Any]:
+    return {
+        "read_tools": [tool.name for tool in mcp_tool_descriptors() if not tool.requires_confirmation],
+        "write_tools": [tool.name for tool in mcp_tool_descriptors() if tool.requires_confirmation],
+        "rule": "直接调用 MCP tool 时不额外审批；通过 agent 代表用户执行写操作时需要审批。",
+    }
+
+
+@MCP_SERVER.resource(
+    "foxel://processors/index",
+    name="processors_index",
+    title="Processors Index",
+    description="返回当前可用处理器列表。",
+    mime_type="application/json",
+)
+def processors_index_resource() -> dict[str, Any]:
+    return {"processors": ProcessorService.list_processors()}
+
+
+async def _tool_resource(tool_name: str, arguments: dict[str, Any]) -> dict[str, Any]:
+    spec = get_tool(tool_name)
+    if not spec:
+        return normalize_tool_result({"error": f"unknown_tool: {tool_name}"})
+    try:
+        result = await spec.handler(arguments)
+        return normalize_tool_result(result)
+    except Exception as exc:  # noqa: BLE001
+        return normalize_tool_result({"error": str(exc)})
+
+
+@MCP_SERVER.resource(
+    "foxel://vfs/stat/{path}",
+    name="vfs_stat_resource",
+    title="VFS Stat",
+    description="读取指定路径的文件或目录元信息；path 需要 URL 编码。",
+    mime_type="application/json",
+)
+async def vfs_stat_resource(path: str) -> dict[str, Any]:
+    return await _tool_resource("vfs_stat", {"path": "/" + unquote(path).lstrip("/")})
+
+
+@MCP_SERVER.resource(
+    "foxel://vfs/text/{path}",
+    name="vfs_text_resource",
+    title="VFS Text",
+    description="读取文本文件内容；path 需要 URL 编码。",
+    mime_type="application/json",
+)
+async def vfs_text_resource(path: str) -> dict[str, Any]:
+    return await _tool_resource("vfs_read_text", {"path": "/" + unquote(path).lstrip("/")})
+
+
+@MCP_SERVER.resource(
+    "foxel://vfs/dir/{path}",
+    name="vfs_dir_resource",
+    title="VFS Directory",
+    description="列出目录内容；path 需要 URL 编码。",
+    mime_type="application/json",
+)
+async def vfs_dir_resource(path: str) -> dict[str, Any]:
+    return await _tool_resource("vfs_list_dir", {"path": "/" + unquote(path).lstrip("/")})
+
+
+@MCP_SERVER.resource(
+    "foxel://vfs/search/{query}",
+    name="vfs_search_resource",
+    title="VFS Search",
+    description="搜索文件；query 需要 URL 编码。",
+    mime_type="application/json",
+)
+async def vfs_search_resource(query: str) -> dict[str, Any]:
+    return await _tool_resource("vfs_search", {"q": unquote(query)})
+
+
+@MCP_SERVER.prompt(name="browse_path", title="Browse Path", description="生成浏览目录的推荐提示词。")
+def browse_path_prompt(path: Annotated[str, Field(description="目标目录路径")]) -> list[dict[str, Any]]:
+    return [{"role": "user", "content": f"请先浏览目录 `{path}`，总结结构与关键文件。必要时调用 vfs_list_dir 与 vfs_stat。"}]
+
+
+@MCP_SERVER.prompt(name="inspect_file", title="Inspect File", description="生成查看文件的推荐提示词。")
+def inspect_file_prompt(path: Annotated[str, Field(description="目标文件路径")]) -> list[dict[str, Any]]:
+    return [{"role": "user", "content": f"请检查文件 `{path}` 的内容与用途。必要时调用 vfs_read_text。"}]
+
+
+@MCP_SERVER.prompt(name="search_files", title="Search Files", description="生成搜索文件的推荐提示词。")
+def search_files_prompt(query: Annotated[str, Field(description="搜索关键词")]) -> list[dict[str, Any]]:
+    return [{"role": "user", "content": f"请搜索与 `{query}` 相关的文件，并按相关性总结。必要时调用 vfs_search。"}]
+
+
+@MCP_SERVER.prompt(name="edit_file_safely", title="Edit File Safely", description="生成安全修改文件的推荐提示词。")
+def edit_file_safely_prompt(path: Annotated[str, Field(description="目标文件路径")]) -> list[dict[str, Any]]:
+    return [{"role": "user", "content": f"请先读取 `{path}`，解释拟修改点，再等待我确认后执行写入。"}]
+
+
+@MCP_SERVER.prompt(name="run_processor", title="Run Processor", description="生成运行处理器的推荐提示词。")
+def run_processor_prompt(
+    path: Annotated[str, Field(description="目标文件或目录路径")],
+    processor_type: Annotated[str, Field(description="处理器类型")],
+) -> list[dict[str, Any]]:
+    return [{"role": "user", "content": f"请检查 `{path}` 是否适合运行处理器 `{processor_type}`，确认参数后再执行 processors_run。"}]
+
+
+@MCP_SERVER.prompt(name="fetch_web_page", title="Fetch Web Page", description="生成抓取网页的推荐提示词。")
+def fetch_web_page_prompt(url: Annotated[str, Field(description="目标网址")]) -> list[dict[str, Any]]:
+    return [{"role": "user", "content": f"请抓取网页 `{url}`，并总结标题、正文与关键链接。必要时调用 web_fetch。"}]
+
+
+MCP_HTTP_APP = MCP_SERVER.streamable_http_app()
+
+
+def loopback_httpx_client_factory(app):
+    def factory(headers: dict[str, str] | None = None, timeout=None, auth=None) -> httpx.AsyncClient:
+        return httpx.AsyncClient(
+            transport=httpx.ASGITransport(app=app),
+            base_url=INTERNAL_MCP_BASE_URL.rstrip("/"),
+            headers=headers,
+            timeout=timeout,
+            auth=auth,
+            follow_redirects=True,
+        )
+
+    return factory
+
+
+async def create_loopback_mcp_headers(user: User | None, current_path: str | None = None) -> dict[str, str]:
+    headers: dict[str, str] = {}
+    if user is not None:
+        token = await AuthService.create_access_token(
+            {"sub": user.username},
+            expires_delta=timedelta(minutes=5),
+        )
+        headers["Authorization"] = f"Bearer {token}"
+    if current_path:
+        headers[CURRENT_PATH_HEADER] = current_path
+    return headers
+
+
+@asynccontextmanager
+async def mcp_client_session(user: User | None, current_path: str | None = None):
+    headers = await create_loopback_mcp_headers(user, current_path)
+    async with streamablehttp_client(
+        INTERNAL_MCP_BASE_URL,
+        headers=headers,
+        httpx_client_factory=loopback_httpx_client_factory(MCP_HTTP_APP),
+    ) as (read_stream, write_stream, _):
+        async with ClientSession(read_stream, write_stream) as session:
+            await session.initialize()
+            yield session
+
+
+def mcp_content_to_text(content: list[Any], structured_content: dict[str, Any] | None = None) -> str:
+    if structured_content is not None:
+        try:
+            return json.dumps(structured_content, ensure_ascii=False)
+        except TypeError:
+            pass
+
+    text_parts: list[str] = []
+    for item in content:
+        item_type = getattr(item, "type", None)
+        if item_type == "text":
+            text = getattr(item, "text", None)
+            if isinstance(text, str) and text:
+                text_parts.append(text)
+    if text_parts:
+        return "\n".join(text_parts)
+    return tool_result_to_content({"error": "empty_mcp_content"})
+
+
+def encode_resource_path(path: str) -> str:
+    return quote(path.lstrip("/"), safe="")

domain/agent/service.py

@@ -8,27 +8,27 @@ from fastapi import HTTPException
 
 from domain.ai import AIProviderService, MissingModelError, chat_completion, chat_completion_stream
 from domain.auth import User
-from .tools import get_tool, openai_tools, tool_result_to_content
+
-from .types import AgentChatRequest, PendingToolCall
+from .mcp import mcp_client_session, mcp_content_to_text
+from .tools import tool_result_to_content
+from .types import AgentChatRequest, PendingMcpCall
 
 
-def _normalize_path(p: Optional[str]) -> Optional[str]:
+def _normalize_path(path: Optional[str]) -> Optional[str]:
-    if not p:
+    if not path:
         return None
-    s = str(p).strip()
+    value = str(path).strip().replace("\\", "/")
-    if not s:
+    if not value:
         return None
-    s = s.replace("\\", "/")
+    if not value.startswith("/"):
-    if not s.startswith("/"):
+        value = "/" + value
-        s = "/" + s
+    return value.rstrip("/") or "/"
-    s = s.rstrip("/") or "/"
-    return s
 
 
 def _build_system_prompt(current_path: Optional[str]) -> str:
     lines = [
         "你是 Foxel 的 AI 助手。",
-        "你可以通过工具对文件/目录进行查询、读写、移动、复制、删除，以及运行处理器（processor）。",
+        "你可以通过 MCP 工具对文件/目录进行查询、读写、移动、复制、删除，以及运行处理器（processor）。",
         "",
         "可用工具：",
         "- time：获取服务器当前时间（精确到秒，英文星期），支持 year/month/day/hour/minute/second 偏移。",
@@ -60,13 +60,13 @@ def _build_system_prompt(current_path: Optional[str]) -> str:
     return "\n".join(lines)
 
 
-def _ensure_tool_call_ids(message: Dict[str, Any]) -> Dict[str, Any]:
+def _ensure_mcp_call_ids(message: Dict[str, Any]) -> Dict[str, Any]:
-    tool_calls = message.get("tool_calls")
+    mcp_calls = message.get("mcp_calls")
-    if not isinstance(tool_calls, list):
+    if not isinstance(mcp_calls, list):
         return message
 
     changed = False
-    for idx, call in enumerate(tool_calls):
+    for idx, call in enumerate(mcp_calls):
         if not isinstance(call, dict):
             continue
         call_id = call.get("id")
@@ -76,57 +76,54 @@ def _ensure_tool_call_ids(message: Dict[str, Any]) -> Dict[str, Any]:
         changed = True
 
     if changed:
-        message["tool_calls"] = tool_calls
+        message["mcp_calls"] = mcp_calls
     return message
 
 
-def _extract_pending(tool_call: Dict[str, Any], requires_confirmation: bool) -> PendingToolCall:
+def _extract_pending(mcp_call: Dict[str, Any], requires_confirmation: bool) -> PendingMcpCall:
-    call_id = str(tool_call.get("id") or "")
+    arguments = mcp_call.get("arguments") if isinstance(mcp_call.get("arguments"), dict) else {}
-    fn = tool_call.get("function") or {}
+    return PendingMcpCall(
-    name = str((fn.get("name") if isinstance(fn, dict) else None) or "")
+        id=str(mcp_call.get("id") or ""),
-    raw_args = fn.get("arguments") if isinstance(fn, dict) else None
+        name=str(mcp_call.get("name") or ""),
-    arguments: Dict[str, Any] = {}
-    if isinstance(raw_args, str) and raw_args.strip():
-        try:
-            parsed = json.loads(raw_args)
-            if isinstance(parsed, dict):
-                arguments = parsed
-        except json.JSONDecodeError:
-            arguments = {}
-    return PendingToolCall(
-        id=call_id,
-        name=name,
         arguments=arguments,
         requires_confirmation=requires_confirmation,
     )
 
 
-def _find_last_assistant_tool_calls(messages: List[Dict[str, Any]]) -> Tuple[int, Dict[str, Any]]:
+def _find_last_assistant_mcp_calls(messages: List[Dict[str, Any]]) -> Tuple[int, Dict[str, Any]]:
     for idx in range(len(messages) - 1, -1, -1):
         msg = messages[idx]
         if not isinstance(msg, dict):
             continue
         if msg.get("role") != "assistant":
             continue
-        tool_calls = msg.get("tool_calls")
+        mcp_calls = msg.get("mcp_calls")
-        if isinstance(tool_calls, list) and tool_calls:
+        if isinstance(mcp_calls, list) and mcp_calls:
             return idx, msg
     raise HTTPException(status_code=400, detail="没有可确认的待执行操作")
 
 
-def _existing_tool_result_ids(messages: List[Dict[str, Any]]) -> set[str]:
+def _existing_mcp_result_ids(messages: List[Dict[str, Any]]) -> set[str]:
     ids: set[str] = set()
     for msg in messages:
         if not isinstance(msg, dict):
             continue
         if msg.get("role") != "tool":
             continue
-        tool_call_id = msg.get("tool_call_id")
+        call_id = msg.get("mcp_call_id")
-        if isinstance(tool_call_id, str) and tool_call_id.strip():
+        if isinstance(call_id, str) and call_id.strip():
-            ids.add(tool_call_id)
+            ids.add(call_id)
     return ids
 
 
+def _tool_requires_confirmation(tool_descriptor: Dict[str, Any]) -> bool:
+    meta = tool_descriptor.get("meta") if isinstance(tool_descriptor.get("meta"), dict) else {}
+    if "requires_confirmation" in meta:
+        return bool(meta.get("requires_confirmation"))
+    annotations = tool_descriptor.get("annotations") if isinstance(tool_descriptor.get("annotations"), dict) else {}
+    return not bool(annotations.get("readOnlyHint"))
+
+
 async def _choose_chat_ability() -> str:
     tools_model = await AIProviderService.get_default_model("tools")
     return "tools" if tools_model else "chat"
@@ -142,245 +139,91 @@ def _format_exc(exc: BaseException) -> str:
     return text if text else exc.__class__.__name__
 
 
+async def _list_mcp_tools(session) -> List[Dict[str, Any]]:
+    result = await session.list_tools()
+    tools: List[Dict[str, Any]] = []
+    for item in result.tools:
+        annotations = getattr(item, "annotations", None)
+        meta = getattr(item, "meta", None)
+        tools.append(
+            {
+                "name": str(getattr(item, "name", "") or ""),
+                "description": str(getattr(item, "description", "") or ""),
+                "input_schema": getattr(item, "inputSchema", None) or {},
+                "annotations": annotations.model_dump(exclude_none=True) if annotations is not None else {},
+                "meta": meta if isinstance(meta, dict) else {},
+            }
+        )
+    return tools
+
+
+async def _execute_mcp_call(session, name: str, arguments: Dict[str, Any]) -> str:
+    result = await session.call_tool(name, arguments)
+    return mcp_content_to_text(result.content, result.structuredContent)
+
+
 class AgentService:
     @classmethod
     async def chat(cls, req: AgentChatRequest, user: Optional[User]) -> Dict[str, Any]:
         history: List[Dict[str, Any]] = list(req.messages or [])
         current_path = _normalize_path(req.context.current_path if req.context else None)
-
         system_prompt = _build_system_prompt(current_path)
         internal_messages: List[Dict[str, Any]] = [{"role": "system", "content": system_prompt}] + history
-
         new_messages: List[Dict[str, Any]] = []
-        pending: List[PendingToolCall] = []
+        pending: List[PendingMcpCall] = []
 
-        approved_ids = {i for i in (req.approved_tool_call_ids or []) if isinstance(i, str) and i.strip()}
+        approved_ids = {i for i in (req.approved_mcp_call_ids or []) if isinstance(i, str) and i.strip()}
-        rejected_ids = {i for i in (req.rejected_tool_call_ids or []) if isinstance(i, str) and i.strip()}
+        rejected_ids = {i for i in (req.rejected_mcp_call_ids or []) if isinstance(i, str) and i.strip()}
 
-        if approved_ids or rejected_ids:
+        async with mcp_client_session(user, current_path) as mcp_session:
-            _, last_call_msg = _find_last_assistant_tool_calls(internal_messages)
+            tools_schema = await _list_mcp_tools(mcp_session)
-            last_call_msg = _ensure_tool_call_ids(last_call_msg)
+            tool_index = {tool["name"]: tool for tool in tools_schema if tool.get("name")}
-            tool_calls = last_call_msg.get("tool_calls") or []
-            call_map: Dict[str, Dict[str, Any]] = {
-                str(c.get("id")): c
-                for c in tool_calls
-                if isinstance(c, dict) and isinstance(c.get("id"), str)
-            }
 
-            existing_ids = _existing_tool_result_ids(internal_messages)
-            for call_id in approved_ids | rejected_ids:
-                if call_id in existing_ids:
-                    continue
-                tool_call = call_map.get(call_id)
-                if not tool_call:
-                    continue
-                fn = tool_call.get("function") or {}
-                name = fn.get("name") if isinstance(fn, dict) else None
-                args_raw = fn.get("arguments") if isinstance(fn, dict) else None
-                args: Dict[str, Any] = {}
-                if isinstance(args_raw, str) and args_raw.strip():
-                    try:
-                        parsed = json.loads(args_raw)
-                        if isinstance(parsed, dict):
-                            args = parsed
-                    except json.JSONDecodeError:
-                        args = {}
-
-                spec = get_tool(str(name or ""))
-                if call_id in rejected_ids:
-                    content = tool_result_to_content({"canceled": True, "reason": "user_rejected"})
-                    tool_msg = {"role": "tool", "tool_call_id": call_id, "content": content}
-                    internal_messages.append(tool_msg)
-                    new_messages.append(tool_msg)
-                    continue
-
-                if not spec:
-                    content = tool_result_to_content({"error": f"unknown_tool: {name}"})
-                    tool_msg = {"role": "tool", "tool_call_id": call_id, "content": content}
-                    internal_messages.append(tool_msg)
-                    new_messages.append(tool_msg)
-                    continue
-
-                try:
-                    result = await spec.handler(args)
-                    content = tool_result_to_content(result)
-                except Exception as exc:  # noqa: BLE001
-                    content = tool_result_to_content({"error": str(exc)})
-                tool_msg = {"role": "tool", "tool_call_id": call_id, "content": content}
-                internal_messages.append(tool_msg)
-                new_messages.append(tool_msg)
-
-        tools_schema = openai_tools()
-        ability = await _choose_chat_ability()
-        max_loops = 4
-
-        for _ in range(max_loops):
-            try:
-                assistant = await chat_completion(
-                    internal_messages,
-                    ability=ability,
-                    tools=tools_schema,
-                    tool_choice="auto",
-                    timeout=60.0,
-                )
-            except MissingModelError as exc:
-                raise HTTPException(status_code=400, detail=str(exc)) from exc
-            except httpx.HTTPStatusError as exc:
-                raise HTTPException(status_code=502, detail=f"对话请求失败: {exc}") from exc
-            except httpx.RequestError as exc:
-                raise HTTPException(status_code=502, detail=f"对话请求异常: {exc}") from exc
-
-            assistant = _ensure_tool_call_ids(assistant)
-            internal_messages.append(assistant)
-            new_messages.append(assistant)
-
-            tool_calls = assistant.get("tool_calls")
-            if not isinstance(tool_calls, list) or not tool_calls:
-                break
-
-            pending = []
-            for call in tool_calls:
-                if not isinstance(call, dict):
-                    continue
-                call_id = str(call.get("id") or "")
-                fn = call.get("function") or {}
-                name = fn.get("name") if isinstance(fn, dict) else None
-                args_raw = fn.get("arguments") if isinstance(fn, dict) else None
-                args: Dict[str, Any] = {}
-                if isinstance(args_raw, str) and args_raw.strip():
-                    try:
-                        parsed = json.loads(args_raw)
-                        if isinstance(parsed, dict):
-                            args = parsed
-                    except json.JSONDecodeError:
-                        args = {}
-
-                spec = get_tool(str(name or ""))
-                if not spec:
-                    content = tool_result_to_content({"error": f"unknown_tool: {name}"})
-                    tool_msg = {"role": "tool", "tool_call_id": call_id, "content": content}
-                    internal_messages.append(tool_msg)
-                    new_messages.append(tool_msg)
-                    continue
-
-                if spec.requires_confirmation and not req.auto_execute:
-                    pending.append(_extract_pending(call, True))
-                    continue
-
-                try:
-                    result = await spec.handler(args)
-                    content = tool_result_to_content(result)
-                except Exception as exc:  # noqa: BLE001
-                    content = tool_result_to_content({"error": str(exc)})
-                tool_msg = {"role": "tool", "tool_call_id": call_id, "content": content}
-                internal_messages.append(tool_msg)
-                new_messages.append(tool_msg)
-
-            if pending:
-                break
-
-        payload: Dict[str, Any] = {"messages": new_messages}
-        if pending:
-            payload["pending_tool_calls"] = [p.model_dump() for p in pending]
-        return payload
-
-    @classmethod
-    async def chat_stream(cls, req: AgentChatRequest, user: Optional[User]):
-        history: List[Dict[str, Any]] = list(req.messages or [])
-        current_path = _normalize_path(req.context.current_path if req.context else None)
-
-        system_prompt = _build_system_prompt(current_path)
-        internal_messages: List[Dict[str, Any]] = [{"role": "system", "content": system_prompt}] + history
-
-        new_messages: List[Dict[str, Any]] = []
-        pending: List[PendingToolCall] = []
-
-        approved_ids = {i for i in (req.approved_tool_call_ids or []) if isinstance(i, str) and i.strip()}
-        rejected_ids = {i for i in (req.rejected_tool_call_ids or []) if isinstance(i, str) and i.strip()}
-
-        try:
             if approved_ids or rejected_ids:
-                _, last_call_msg = _find_last_assistant_tool_calls(internal_messages)
+                _, last_call_msg = _find_last_assistant_mcp_calls(internal_messages)
-                last_call_msg = _ensure_tool_call_ids(last_call_msg)
+                last_call_msg = _ensure_mcp_call_ids(last_call_msg)
-                tool_calls = last_call_msg.get("tool_calls") or []
+                mcp_calls = last_call_msg.get("mcp_calls") or []
                 call_map: Dict[str, Dict[str, Any]] = {
-                    str(c.get("id")): c
+                    str(call.get("id")): call
-                    for c in tool_calls
+                    for call in mcp_calls
-                    if isinstance(c, dict) and isinstance(c.get("id"), str)
+                    if isinstance(call, dict) and isinstance(call.get("id"), str)
                 }
 
-                existing_ids = _existing_tool_result_ids(internal_messages)
+                existing_ids = _existing_mcp_result_ids(internal_messages)
                 for call_id in approved_ids | rejected_ids:
                     if call_id in existing_ids:
                         continue
-                    tool_call = call_map.get(call_id)
+                    mcp_call = call_map.get(call_id)
-                    if not tool_call:
+                    if not mcp_call:
                         continue
-                    fn = tool_call.get("function") or {}
+                    name = str(mcp_call.get("name") or "")
-                    name = fn.get("name") if isinstance(fn, dict) else None
+                    arguments = mcp_call.get("arguments") if isinstance(mcp_call.get("arguments"), dict) else {}
-                    args_raw = fn.get("arguments") if isinstance(fn, dict) else None
+                    tool_desc = tool_index.get(name)
-                    args: Dict[str, Any] = {}
-                    if isinstance(args_raw, str) and args_raw.strip():
-                        try:
-                            parsed = json.loads(args_raw)
-                            if isinstance(parsed, dict):
-                                args = parsed
-                        except json.JSONDecodeError:
-                            args = {}
 
-                    spec = get_tool(str(name or ""))
                     if call_id in rejected_ids:
                         content = tool_result_to_content({"canceled": True, "reason": "user_rejected"})
-                        tool_msg = {"role": "tool", "tool_call_id": call_id, "content": content}
+                    elif not tool_desc:
-                        internal_messages.append(tool_msg)
-                        new_messages.append(tool_msg)
-                        yield _sse("tool_end", {"tool_call_id": call_id, "name": str(name or ""), "message": tool_msg})
-                        continue
-
-                    if not spec:
                         content = tool_result_to_content({"error": f"unknown_tool: {name}"})
-                        tool_msg = {"role": "tool", "tool_call_id": call_id, "content": content}
+                    else:
-                        internal_messages.append(tool_msg)
+                        try:
-                        new_messages.append(tool_msg)
+                            content = await _execute_mcp_call(mcp_session, name, arguments)
-                        yield _sse("tool_end", {"tool_call_id": call_id, "name": str(name or ""), "message": tool_msg})
+                        except Exception as exc:  # noqa: BLE001
-                        continue
+                            content = tool_result_to_content({"error": str(exc)})
-
+                    tool_msg = {"role": "tool", "mcp_call_id": call_id, "content": content}
-                    yield _sse("tool_start", {"tool_call_id": call_id, "name": spec.name})
-                    try:
-                        result = await spec.handler(args)
-                        content = tool_result_to_content(result)
-                    except Exception as exc:  # noqa: BLE001
-                        content = tool_result_to_content({"error": str(exc)})
-                    tool_msg = {"role": "tool", "tool_call_id": call_id, "content": content}
                     internal_messages.append(tool_msg)
                     new_messages.append(tool_msg)
-                    yield _sse("tool_end", {"tool_call_id": call_id, "name": spec.name, "message": tool_msg})
 
-            tools_schema = openai_tools()
             ability = await _choose_chat_ability()
-            max_loops = 4
 
-            for _ in range(max_loops):
+            for _ in range(8):
-                assistant_event_id = uuid.uuid4().hex
-                yield _sse("assistant_start", {"id": assistant_event_id})
-
-                assistant_message: Dict[str, Any] | None = None
                 try:
-                    async for event in chat_completion_stream(
+                    assistant = await chat_completion(
                         internal_messages,
                         ability=ability,
                         tools=tools_schema,
                         tool_choice="auto",
                         timeout=60.0,
-                    ):
+                    )
-                        if event.get("type") == "delta":
-                            delta = event.get("delta")
-                            if isinstance(delta, str) and delta:
-                                yield _sse("assistant_delta", {"id": assistant_event_id, "delta": delta})
-                        elif event.get("type") == "message":
-                            msg = event.get("message")
-                            if isinstance(msg, dict):
-                                assistant_message = msg
                 except MissingModelError as exc:
                     raise HTTPException(status_code=400, detail=_format_exc(exc)) from exc
                 except httpx.HTTPStatusError as exc:
@@ -388,66 +231,196 @@ class AgentService:
                 except httpx.RequestError as exc:
                     raise HTTPException(status_code=502, detail=f"对话请求异常: {_format_exc(exc)}") from exc
 
-                if not assistant_message:
+                assistant = _ensure_mcp_call_ids(assistant if isinstance(assistant, dict) else {"role": "assistant", "content": ""})
-                    assistant_message = {"role": "assistant", "content": ""}
+                internal_messages.append(assistant)
+                new_messages.append(assistant)
 
-                assistant_message = _ensure_tool_call_ids(assistant_message)
+                mcp_calls = assistant.get("mcp_calls")
-                internal_messages.append(assistant_message)
+                if not isinstance(mcp_calls, list) or not mcp_calls:
-                new_messages.append(assistant_message)
-                yield _sse("assistant_end", {"id": assistant_event_id, "message": assistant_message})
-
-                tool_calls = assistant_message.get("tool_calls")
-                if not isinstance(tool_calls, list) or not tool_calls:
                     break
 
                 pending = []
-                for call in tool_calls:
+                for call in mcp_calls:
                     if not isinstance(call, dict):
                         continue
                     call_id = str(call.get("id") or "")
-                    fn = call.get("function") or {}
+                    name = str(call.get("name") or "")
-                    name = fn.get("name") if isinstance(fn, dict) else None
+                    arguments = call.get("arguments") if isinstance(call.get("arguments"), dict) else {}
-                    args_raw = fn.get("arguments") if isinstance(fn, dict) else None
+                    tool_desc = tool_index.get(name)
-                    args: Dict[str, Any] = {}
-                    if isinstance(args_raw, str) and args_raw.strip():
-                        try:
-                            parsed = json.loads(args_raw)
-                            if isinstance(parsed, dict):
-                                args = parsed
-                        except json.JSONDecodeError:
-                            args = {}
 
-                    spec = get_tool(str(name or ""))
+                    if not tool_desc:
-                    if not spec:
                         content = tool_result_to_content({"error": f"unknown_tool: {name}"})
-                        tool_msg = {"role": "tool", "tool_call_id": call_id, "content": content}
+                        tool_msg = {"role": "tool", "mcp_call_id": call_id, "content": content}
                         internal_messages.append(tool_msg)
                         new_messages.append(tool_msg)
-                        yield _sse("tool_end", {"tool_call_id": call_id, "name": str(name or ""), "message": tool_msg})
                         continue
 
-                    if spec.requires_confirmation and not req.auto_execute:
+                    if _tool_requires_confirmation(tool_desc) and not req.auto_execute:
                         pending.append(_extract_pending(call, True))
                         continue
 
-                    yield _sse("tool_start", {"tool_call_id": call_id, "name": spec.name})
                     try:
-                        result = await spec.handler(args)
+                        content = await _execute_mcp_call(mcp_session, name, arguments)
-                        content = tool_result_to_content(result)
                     except Exception as exc:  # noqa: BLE001
                         content = tool_result_to_content({"error": str(exc)})
-                    tool_msg = {"role": "tool", "tool_call_id": call_id, "content": content}
+                    tool_msg = {"role": "tool", "mcp_call_id": call_id, "content": content}
                     internal_messages.append(tool_msg)
                     new_messages.append(tool_msg)
-                    yield _sse("tool_end", {"tool_call_id": call_id, "name": spec.name, "message": tool_msg})
 
                 if pending:
-                    yield _sse("pending", {"pending_tool_calls": [p.model_dump() for p in pending]})
                     break
 
+        payload: Dict[str, Any] = {"messages": new_messages}
+        if pending:
+            payload["pending_mcp_calls"] = [item.model_dump() for item in pending]
+        return payload
+
+    @classmethod
+    async def chat_stream(cls, req: AgentChatRequest, user: Optional[User]):
+        history: List[Dict[str, Any]] = list(req.messages or [])
+        current_path = _normalize_path(req.context.current_path if req.context else None)
+        system_prompt = _build_system_prompt(current_path)
+        internal_messages: List[Dict[str, Any]] = [{"role": "system", "content": system_prompt}] + history
+        new_messages: List[Dict[str, Any]] = []
+        pending: List[PendingMcpCall] = []
+
+        approved_ids = {i for i in (req.approved_mcp_call_ids or []) if isinstance(i, str) and i.strip()}
+        rejected_ids = {i for i in (req.rejected_mcp_call_ids or []) if isinstance(i, str) and i.strip()}
+
+        try:
+            async with mcp_client_session(user, current_path) as mcp_session:
+                tools_schema = await _list_mcp_tools(mcp_session)
+                tool_index = {tool["name"]: tool for tool in tools_schema if tool.get("name")}
+
+                if approved_ids or rejected_ids:
+                    _, last_call_msg = _find_last_assistant_mcp_calls(internal_messages)
+                    last_call_msg = _ensure_mcp_call_ids(last_call_msg)
+                    mcp_calls = last_call_msg.get("mcp_calls") or []
+                    call_map: Dict[str, Dict[str, Any]] = {
+                        str(call.get("id")): call
+                        for call in mcp_calls
+                        if isinstance(call, dict) and isinstance(call.get("id"), str)
+                    }
+
+                    existing_ids = _existing_mcp_result_ids(internal_messages)
+                    for call_id in approved_ids | rejected_ids:
+                        if call_id in existing_ids:
+                            continue
+                        mcp_call = call_map.get(call_id)
+                        if not mcp_call:
+                            continue
+
+                        name = str(mcp_call.get("name") or "")
+                        arguments = mcp_call.get("arguments") if isinstance(mcp_call.get("arguments"), dict) else {}
+                        tool_desc = tool_index.get(name)
+
+                        if call_id in rejected_ids:
+                            content = tool_result_to_content({"canceled": True, "reason": "user_rejected"})
+                            tool_msg = {"role": "tool", "mcp_call_id": call_id, "content": content}
+                            internal_messages.append(tool_msg)
+                            new_messages.append(tool_msg)
+                            yield _sse("mcp_call_end", {"mcp_call_id": call_id, "name": name, "message": tool_msg})
+                            continue
+
+                        if not tool_desc:
+                            content = tool_result_to_content({"error": f"unknown_tool: {name}"})
+                            tool_msg = {"role": "tool", "mcp_call_id": call_id, "content": content}
+                            internal_messages.append(tool_msg)
+                            new_messages.append(tool_msg)
+                            yield _sse("mcp_call_end", {"mcp_call_id": call_id, "name": name, "message": tool_msg})
+                            continue
+
+                        yield _sse("mcp_call_start", {"mcp_call_id": call_id, "name": name})
+                        try:
+                            content = await _execute_mcp_call(mcp_session, name, arguments)
+                        except Exception as exc:  # noqa: BLE001
+                            content = tool_result_to_content({"error": str(exc)})
+                        tool_msg = {"role": "tool", "mcp_call_id": call_id, "content": content}
+                        internal_messages.append(tool_msg)
+                        new_messages.append(tool_msg)
+                        yield _sse("mcp_call_end", {"mcp_call_id": call_id, "name": name, "message": tool_msg})
+
+                ability = await _choose_chat_ability()
+
+                for _ in range(8):
+                    assistant_event_id = str(uuid.uuid4())
+                    yield _sse("assistant_start", {"id": assistant_event_id})
+
+                    assistant_message: Dict[str, Any] | None = None
+                    try:
+                        async for event in chat_completion_stream(
+                            internal_messages,
+                            ability=ability,
+                            tools=tools_schema,
+                            tool_choice="auto",
+                            timeout=60.0,
+                        ):
+                            event_type = event.get("type")
+                            if event_type == "delta":
+                                delta = event.get("delta")
+                                if isinstance(delta, str) and delta:
+                                    yield _sse("assistant_delta", {"id": assistant_event_id, "delta": delta})
+                            elif event_type == "message":
+                                msg = event.get("message")
+                                if isinstance(msg, dict):
+                                    assistant_message = msg
+                    except MissingModelError as exc:
+                        raise HTTPException(status_code=400, detail=_format_exc(exc)) from exc
+                    except httpx.HTTPStatusError as exc:
+                        raise HTTPException(status_code=502, detail=f"对话请求失败: {_format_exc(exc)}") from exc
+                    except httpx.RequestError as exc:
+                        raise HTTPException(status_code=502, detail=f"对话请求异常: {_format_exc(exc)}") from exc
+
+                    if not assistant_message:
+                        assistant_message = {"role": "assistant", "content": ""}
+
+                    assistant_message = _ensure_mcp_call_ids(assistant_message)
+                    internal_messages.append(assistant_message)
+                    new_messages.append(assistant_message)
+                    yield _sse("assistant_end", {"id": assistant_event_id, "message": assistant_message})
+
+                    mcp_calls = assistant_message.get("mcp_calls")
+                    if not isinstance(mcp_calls, list) or not mcp_calls:
+                        break
+
+                    pending = []
+                    for call in mcp_calls:
+                        if not isinstance(call, dict):
+                            continue
+                        call_id = str(call.get("id") or "")
+                        name = str(call.get("name") or "")
+                        arguments = call.get("arguments") if isinstance(call.get("arguments"), dict) else {}
+                        tool_desc = tool_index.get(name)
+
+                        if not tool_desc:
+                            content = tool_result_to_content({"error": f"unknown_tool: {name}"})
+                            tool_msg = {"role": "tool", "mcp_call_id": call_id, "content": content}
+                            internal_messages.append(tool_msg)
+                            new_messages.append(tool_msg)
+                            yield _sse("mcp_call_end", {"mcp_call_id": call_id, "name": name, "message": tool_msg})
+                            continue
+
+                        if _tool_requires_confirmation(tool_desc) and not req.auto_execute:
+                            pending.append(_extract_pending(call, True))
+                            continue
+
+                        yield _sse("mcp_call_start", {"mcp_call_id": call_id, "name": name})
+                        try:
+                            content = await _execute_mcp_call(mcp_session, name, arguments)
+                        except Exception as exc:  # noqa: BLE001
+                            content = tool_result_to_content({"error": str(exc)})
+                        tool_msg = {"role": "tool", "mcp_call_id": call_id, "content": content}
+                        internal_messages.append(tool_msg)
+                        new_messages.append(tool_msg)
+                        yield _sse("mcp_call_end", {"mcp_call_id": call_id, "name": name, "message": tool_msg})
+
+                    if pending:
+                        yield _sse("pending", {"pending_mcp_calls": [item.model_dump() for item in pending]})
+                        break
+
             payload: Dict[str, Any] = {"messages": new_messages}
             if pending:
-                payload["pending_tool_calls"] = [p.model_dump() for p in pending]
+                payload["pending_mcp_calls"] = [item.model_dump() for item in pending]
             yield _sse("done", payload)
 
         except asyncio.CancelledError:
@@ -460,13 +433,11 @@ class AgentService:
             new_messages.append({"role": "assistant", "content": content})
             payload: Dict[str, Any] = {"messages": new_messages}
             if pending:
-                payload["pending_tool_calls"] = [p.model_dump() for p in pending]
+                payload["pending_mcp_calls"] = [item.model_dump() for item in pending]
             yield _sse("done", payload)
-            return
         except Exception as exc:  # noqa: BLE001
             new_messages.append({"role": "assistant", "content": f"服务端异常: {_format_exc(exc)}"})
             payload: Dict[str, Any] = {"messages": new_messages}
             if pending:
-                payload["pending_tool_calls"] = [p.model_dump() for p in pending]
+                payload["pending_mcp_calls"] = [item.model_dump() for item in pending]
             yield _sse("done", payload)
-            return

domain/agent/tools/__init__.py

@@ -1,6 +1,6 @@
 from typing import Any, Dict, List, Optional
 
-from .base import ToolSpec, tool_result_to_content
+from .base import McpToolDescriptor, ToolSpec, tool_result_to_content, tool_spec_to_mcp_descriptor
 from .processors import TOOLS as PROCESSOR_TOOLS
 from .time import TOOLS as TIME_TOOLS
 from .vfs import TOOLS as VFS_TOOLS
@@ -15,23 +15,19 @@ def get_tool(name: str) -> Optional[ToolSpec]:
     return TOOLS.get(name)
 
 
-def openai_tools() -> List[Dict[str, Any]]:
+def list_tool_specs() -> List[ToolSpec]:
-    out: List[Dict[str, Any]] = []
+    return list(TOOLS.values())
-    for spec in TOOLS.values():
+
-        out.append({
+
-            "type": "function",
+def mcp_tool_descriptors() -> List[McpToolDescriptor]:
-            "function": {
+    return [tool_spec_to_mcp_descriptor(spec) for spec in TOOLS.values()]
-                "name": spec.name,
-                "description": spec.description,
-                "parameters": spec.parameters,
-            },
-        })
-    return out
 
 
 __all__ = [
+    "McpToolDescriptor",
     "ToolSpec",
     "get_tool",
-    "openai_tools",
+    "list_tool_specs",
+    "mcp_tool_descriptors",
     "tool_result_to_content",
 ]

domain/agent/tools/base.py

@@ -3,6 +3,16 @@ from dataclasses import dataclass
 from typing import Any, Awaitable, Callable, Dict, List, Optional
 
 
+@dataclass(frozen=True)
+class McpToolDescriptor:
+    name: str
+    description: str
+    input_schema: Dict[str, Any]
+    annotations: Dict[str, Any]
+    meta: Dict[str, Any]
+    requires_confirmation: bool
+
+
 @dataclass(frozen=True)
 class ToolSpec:
     name: str
@@ -141,9 +151,31 @@ def _normalize_tool_result(result: Any) -> Dict[str, Any]:
     return {"ok": True, "summary": summary, "view": view, "data": result}
 
 
+def normalize_tool_result(result: Any) -> Dict[str, Any]:
+    return _normalize_tool_result(result)
+
+
 def tool_result_to_content(result: Any) -> str:
-    payload = _normalize_tool_result(result)
+    payload = normalize_tool_result(result)
     try:
         return json.dumps(payload, ensure_ascii=False, default=str)
     except TypeError:
         return json.dumps({"ok": False, "summary": "error", "view": {"type": "error", "message": "error"}}, ensure_ascii=False)
+
+
+def tool_spec_to_mcp_descriptor(spec: ToolSpec) -> McpToolDescriptor:
+    read_only = not spec.requires_confirmation
+    annotations: Dict[str, Any] = {
+        "readOnlyHint": read_only,
+        "destructiveHint": bool(spec.requires_confirmation),
+    }
+    if spec.name == "web_fetch":
+        annotations["openWorldHint"] = True
+    return McpToolDescriptor(
+        name=spec.name,
+        description=spec.description,
+        input_schema=spec.parameters,
+        annotations=annotations,
+        meta={"requires_confirmation": spec.requires_confirmation},
+        requires_confirmation=spec.requires_confirmation,
+    )

domain/agent/types.py

@@ -10,14 +10,19 @@ class AgentChatContext(BaseModel):
 class AgentChatRequest(BaseModel):
     messages: List[Dict[str, Any]] = Field(default_factory=list)
     auto_execute: bool = False
-    approved_tool_call_ids: List[str] = Field(default_factory=list)
+    approved_mcp_call_ids: List[str] = Field(default_factory=list)
-    rejected_tool_call_ids: List[str] = Field(default_factory=list)
+    rejected_mcp_call_ids: List[str] = Field(default_factory=list)
     context: Optional[AgentChatContext] = None
 
 
-class PendingToolCall(BaseModel):
+class McpCall(BaseModel):
+    id: str
+    name: str
+    arguments: Dict[str, Any] = Field(default_factory=dict)
+
+
+class PendingMcpCall(BaseModel):
     id: str
     name: str
     arguments: Dict[str, Any] = Field(default_factory=dict)
     requires_confirmation: bool = True
-

domain/ai/api.py

@@ -267,19 +267,24 @@ async def get_vector_db_config(request: Request, user: User = Depends(get_curren
 async def update_vector_db_config(
     request: Request, payload: VectorDBConfigPayload, user: User = Depends(get_current_active_user)
 ):
-    entry = get_provider_entry(payload.type)
+    provider_type = str(payload.type or "").strip()
+    if not provider_type:
+        raise HTTPException(status_code=400, detail="向量数据库类型不能为空")
+    normalized_config = VectorDBConfigManager.normalize_config(payload.config)
+
+    entry = get_provider_entry(provider_type)
     if not entry:
         raise HTTPException(
-            status_code=400, detail=f"未知的向量数据库类型: {payload.type}")
+            status_code=400, detail=f"未知的向量数据库类型: {provider_type}")
     if not entry.get("enabled", True):
         raise HTTPException(status_code=400, detail="该向量数据库类型暂不可用")
 
-    provider_cls = get_provider_class(payload.type)
+    provider_cls = get_provider_class(provider_type)
     if not provider_cls:
         raise HTTPException(
-            status_code=400, detail=f"未找到类型 {payload.type} 对应的实现")
+            status_code=400, detail=f"未找到类型 {provider_type} 对应的实现")
 
-    test_provider = provider_cls(payload.config)
+    test_provider = provider_cls(normalized_config)
     try:
         await test_provider.initialize()
     except Exception as exc:
@@ -293,7 +298,7 @@ async def update_vector_db_config(
             except Exception:
                 pass
 
-    await VectorDBConfigManager.save_config(payload.type, payload.config)
+    await VectorDBConfigManager.save_config(provider_type, normalized_config)
     service = VectorDBService()
     await service.reload()
     config_data = await service.current_provider()

domain/ai/inference.py

@@ -15,6 +15,102 @@ class MissingModelError(RuntimeError):
     pass
 
 
+def _mcp_tools_to_openai_wire(tools: List[Dict[str, Any]] | None) -> List[Dict[str, Any]] | None:
+    if not tools:
+        return None
+    out: List[Dict[str, Any]] = []
+    for tool in tools:
+        if not isinstance(tool, dict):
+            continue
+        name = tool.get("name")
+        if not isinstance(name, str) or not name.strip():
+            continue
+        out.append(
+            {
+                "type": "function",
+                "function": {
+                    "name": name,
+                    "description": str(tool.get("description") or ""),
+                    "parameters": tool.get("input_schema") if isinstance(tool.get("input_schema"), dict) else {},
+                },
+            }
+        )
+    return out
+
+
+def _mcp_messages_to_openai_wire(messages: List[Dict[str, Any]]) -> List[Dict[str, Any]]:
+    out: List[Dict[str, Any]] = []
+    for message in messages:
+        if not isinstance(message, dict):
+            continue
+        item = dict(message)
+        mcp_call_id = item.pop("mcp_call_id", None)
+        if isinstance(mcp_call_id, str) and mcp_call_id.strip():
+            item["tool_call_id"] = mcp_call_id
+
+        mcp_calls = item.pop("mcp_calls", None)
+        if isinstance(mcp_calls, list):
+            tool_calls: List[Dict[str, Any]] = []
+            for idx, call in enumerate(mcp_calls):
+                if not isinstance(call, dict):
+                    continue
+                name = call.get("name")
+                if not isinstance(name, str) or not name.strip():
+                    continue
+                arguments = call.get("arguments") if isinstance(call.get("arguments"), dict) else {}
+                tool_calls.append(
+                    {
+                        "id": str(call.get("id") or f"call_{idx}"),
+                        "type": "function",
+                        "function": {
+                            "name": name,
+                            "arguments": json.dumps(arguments, ensure_ascii=False),
+                        },
+                    }
+                )
+            if tool_calls:
+                item["tool_calls"] = tool_calls
+        out.append(item)
+    return out
+
+
+def _openai_wire_message_to_mcp(message: Dict[str, Any]) -> Dict[str, Any]:
+    out = dict(message)
+    tool_call_id = out.pop("tool_call_id", None)
+    if isinstance(tool_call_id, str) and tool_call_id.strip():
+        out["mcp_call_id"] = tool_call_id
+
+    tool_calls = out.pop("tool_calls", None)
+    if isinstance(tool_calls, list):
+        mcp_calls: List[Dict[str, Any]] = []
+        for idx, call in enumerate(tool_calls):
+            if not isinstance(call, dict):
+                continue
+            fn = call.get("function") if isinstance(call.get("function"), dict) else {}
+            name = fn.get("name")
+            if not isinstance(name, str) or not name.strip():
+                continue
+            arguments: Dict[str, Any] = {}
+            raw_args = fn.get("arguments")
+            if isinstance(raw_args, str) and raw_args.strip():
+                try:
+                    parsed = json.loads(raw_args)
+                    if isinstance(parsed, dict):
+                        arguments = parsed
+                except json.JSONDecodeError:
+                    arguments = {}
+            mcp_calls.append(
+                {
+                    "id": str(call.get("id") or f"call_{idx}"),
+                    "name": name,
+                    "arguments": arguments,
+                }
+            )
+        if mcp_calls:
+            out["mcp_calls"] = mcp_calls
+    return out
+
+
 async def describe_image_base64(base64_image: str, detail: str = "high") -> str:
     """
     传入 base64 图片并返回描述文本。缺省时返回错误提示。
@@ -939,34 +1035,39 @@ async def chat_completion(
 ) -> Dict[str, Any]:
     model, provider = await _require_model(ability)
     fmt = str(provider.api_format or "").lower()
+    wire_messages = _mcp_messages_to_openai_wire(messages)
+    wire_tools = _mcp_tools_to_openai_wire(tools)
     if fmt == "openai":
-        return await _chat_with_openai(
+        result = await _chat_with_openai(
             provider,
             model,
-            messages,
+            wire_messages,
-            tools=tools,
+            tools=wire_tools,
             tool_choice=tool_choice,
             temperature=temperature,
             timeout=timeout,
         )
+        return _openai_wire_message_to_mcp(result)
     if fmt == "anthropic":
-        return await _chat_with_anthropic(
+        result = await _chat_with_anthropic(
             provider,
             model,
-            messages,
+            wire_messages,
-            tools=tools,
+            tools=wire_tools,
             temperature=temperature,
             timeout=timeout,
         )
+        return _openai_wire_message_to_mcp(result)
     if fmt == "ollama":
-        return await _chat_with_ollama(
+        result = await _chat_with_ollama(
             provider,
             model,
-            messages,
+            wire_messages,
-            tools=tools,
+            tools=wire_tools,
             temperature=temperature,
             timeout=timeout,
         )
+        return _openai_wire_message_to_mcp(result)
     raise MissingModelError(f"当前不支持该对话模型接口类型: {provider.api_format}")
 
 
@@ -1016,38 +1117,49 @@ async def chat_completion_stream(
 ) -> AsyncIterator[Dict[str, Any]]:
     model, provider = await _require_model(ability)
     fmt = str(provider.api_format or "").lower()
+    wire_messages = _mcp_messages_to_openai_wire(messages)
+    wire_tools = _mcp_tools_to_openai_wire(tools)
     if fmt == "openai":
         async for event in _chat_stream_with_openai(
             provider,
             model,
-            messages,
+            wire_messages,
-            tools=tools,
+            tools=wire_tools,
             tool_choice=tool_choice,
             temperature=temperature,
             timeout=timeout,
         ):
+            if event.get("type") == "message" and isinstance(event.get("message"), dict):
+                yield {**event, "message": _openai_wire_message_to_mcp(event["message"])}
+                continue
             yield event
         return
     if fmt == "anthropic":
         async for event in _chat_stream_with_anthropic(
             provider,
             model,
-            messages,
+            wire_messages,
-            tools=tools,
+            tools=wire_tools,
             temperature=temperature,
             timeout=timeout,
         ):
+            if event.get("type") == "message" and isinstance(event.get("message"), dict):
+                yield {**event, "message": _openai_wire_message_to_mcp(event["message"])}
+                continue
             yield event
         return
     if fmt == "ollama":
         async for event in _chat_stream_with_ollama(
             provider,
             model,
-            messages,
+            wire_messages,
-            tools=tools,
+            tools=wire_tools,
             temperature=temperature,
             timeout=timeout,
         ):
+            if event.get("type") == "message" and isinstance(event.get("message"), dict):
+                yield {**event, "message": _openai_wire_message_to_mcp(event["message"])}
+                continue
             yield event
         return
     raise MissingModelError(f"当前不支持该对话模型接口类型: {provider.api_format}")

domain/ai/service.py

@@ -1,7 +1,7 @@
 import asyncio
 import json
 from collections.abc import Iterable
-from typing import Any, Dict, List, Optional, Tuple
+from typing import Any, Dict, List, Optional, Tuple, TypeVar
 
 import httpx
 from tortoise.exceptions import DoesNotExist
@@ -28,16 +28,37 @@ OPENAI_EMBEDDING_DIMS = {
     "text-embedding-ada-002": 1536,
 }
 
+T = TypeVar("T")
+
 
 class VectorDBConfigManager:
     TYPE_KEY = "VECTOR_DB_TYPE"
     CONFIG_KEY = "VECTOR_DB_CONFIG"
     DEFAULT_TYPE = "milvus_lite"
 
+    @classmethod
+    def normalize_type(cls, provider_type: Any) -> str:
+        normalized = str(provider_type or cls.DEFAULT_TYPE).strip()
+        return normalized or cls.DEFAULT_TYPE
+
+    @classmethod
+    def normalize_config(cls, config: Dict[str, Any] | None) -> Dict[str, Any]:
+        normalized: Dict[str, Any] = {}
+        for key, value in (config or {}).items():
+            normalized_key = str(key).strip()
+            if not normalized_key:
+                continue
+            if isinstance(value, str):
+                value = value.strip()
+                if not value:
+                    continue
+            normalized[normalized_key] = value
+        return normalized
+
     @classmethod
     async def load_config(cls) -> Tuple[str, Dict[str, Any]]:
         raw_type = await ConfigService.get(cls.TYPE_KEY, cls.DEFAULT_TYPE)
-        provider_type = str(raw_type or cls.DEFAULT_TYPE)
+        provider_type = cls.normalize_type(raw_type)
 
         raw_config = await ConfigService.get(cls.CONFIG_KEY)
         config_dict: Dict[str, Any] = {}
@@ -48,12 +69,14 @@ class VectorDBConfigManager:
                 config_dict = {}
         elif isinstance(raw_config, dict):
             config_dict = raw_config
-        return provider_type, config_dict
+        return provider_type, cls.normalize_config(config_dict)
 
     @classmethod
     async def save_config(cls, provider_type: str, config: Dict[str, Any]) -> None:
-        await ConfigService.set(cls.TYPE_KEY, provider_type)
+        normalized_type = cls.normalize_type(provider_type)
-        await ConfigService.set(cls.CONFIG_KEY, json.dumps(config or {}))
+        normalized_config = cls.normalize_config(config)
+        await ConfigService.set(cls.TYPE_KEY, normalized_type)
+        await ConfigService.set(cls.CONFIG_KEY, json.dumps(normalized_config))
 
     @classmethod
     async def get_type(cls) -> str:
@@ -413,6 +436,7 @@ class VectorDBService:
             self._provider_type: Optional[str] = None
             self._provider_config: Dict[str, Any] | None = None
             self._lock = asyncio.Lock()
+            self._operation_lock = asyncio.Lock()
 
     async def _ensure_provider(self) -> BaseVectorProvider:
         if self._provider is None:
@@ -449,33 +473,38 @@ class VectorDBService:
             self._provider_config = normalized_config
             return provider
 
+    async def _run_provider_call(self, provider: BaseVectorProvider, method_name: str, *args, **kwargs) -> T:
+        method = getattr(provider, method_name)
+        async with self._operation_lock:
+            return await asyncio.to_thread(method, *args, **kwargs)
+
     async def ensure_collection(self, collection_name: str, vector: bool = True, dim: int = DEFAULT_VECTOR_DIMENSION) -> None:
         provider = await self._ensure_provider()
-        provider.ensure_collection(collection_name, vector, dim)
+        await self._run_provider_call(provider, "ensure_collection", collection_name, vector, dim)
 
     async def upsert_vector(self, collection_name: str, data: Dict[str, Any]) -> None:
         provider = await self._ensure_provider()
-        provider.upsert_vector(collection_name, data)
+        await self._run_provider_call(provider, "upsert_vector", collection_name, data)
 
     async def delete_vector(self, collection_name: str, path: str) -> None:
         provider = await self._ensure_provider()
-        provider.delete_vector(collection_name, path)
+        await self._run_provider_call(provider, "delete_vector", collection_name, path)
 
     async def search_vectors(self, collection_name: str, query_embedding, top_k: int = 5):
         provider = await self._ensure_provider()
-        return provider.search_vectors(collection_name, query_embedding, top_k)
+        return await self._run_provider_call(provider, "search_vectors", collection_name, query_embedding, top_k)
 
     async def search_by_path(self, collection_name: str, query_path: str, top_k: int = 20):
         provider = await self._ensure_provider()
-        return provider.search_by_path(collection_name, query_path, top_k)
+        return await self._run_provider_call(provider, "search_by_path", collection_name, query_path, top_k)
 
     async def get_all_stats(self) -> Dict[str, Any]:
         provider = await self._ensure_provider()
-        return provider.get_all_stats()
+        return await self._run_provider_call(provider, "get_all_stats")
 
     async def clear_all_data(self) -> None:
         provider = await self._ensure_provider()
-        provider.clear_all_data()
+        await self._run_provider_call(provider, "clear_all_data")
 
     async def current_provider(self) -> Dict[str, Any]:
         provider_type, provider_config = await VectorDBConfigManager.load_config()

domain/ai/vector_providers/milvus_lite.py

@@ -1,3 +1,4 @@
+import asyncio
 from pathlib import Path
 from typing import Any, Dict, List, Optional
 
@@ -23,12 +24,14 @@ class MilvusLiteProvider(BaseVectorProvider):
 
     def __init__(self, config: Dict[str, Any] | None = None):
         super().__init__(config)
-        self.db_path = Path(self.config.get("db_path") or "data/db/milvus.db")
+        raw_db_path = self.config.get("db_path")
+        db_path = str(raw_db_path).strip() if raw_db_path is not None else ""
+        self.db_path = Path(db_path or "data/db/milvus.db")
         self.client: MilvusClient | None = None
 
     async def initialize(self) -> None:
         try:
-            self.client = MilvusClient(str(self.db_path))
+            self.client = await asyncio.to_thread(MilvusClient, str(self.db_path))
         except Exception as exc:  # pragma: no cover - depends on local environment
             raise RuntimeError(f"Failed to open Milvus Lite at {self.db_path}: {exc}") from exc
 

domain/ai/vector_providers/milvus_server.py

@@ -1,3 +1,4 @@
+import asyncio
 from typing import Any, Dict, List, Optional
 
 from pymilvus import CollectionSchema, DataType, FieldSchema, MilvusClient
@@ -32,11 +33,14 @@ class MilvusServerProvider(BaseVectorProvider):
         self.client: MilvusClient | None = None
 
     async def initialize(self) -> None:
-        uri = self.config.get("uri")
+        uri = str(self.config.get("uri") or "").strip()
         if not uri:
             raise RuntimeError("Milvus Server URI is required")
+        token = self.config.get("token")
+        if isinstance(token, str):
+            token = token.strip() or None
         try:
-            self.client = MilvusClient(uri=uri, token=self.config.get("token"))
+            self.client = await asyncio.to_thread(MilvusClient, uri=uri, token=token)
         except Exception as exc:  # pragma: no cover - depends on remote availability
             raise RuntimeError(f"Failed to connect to Milvus Server {uri}: {exc}") from exc
 

domain/ai/vector_providers/qdrant.py

@@ -1,3 +1,4 @@
+import asyncio
 from typing import Any, Dict, List, Optional, Sequence
 from uuid import NAMESPACE_URL, uuid5
 
@@ -40,7 +41,7 @@ class QdrantProvider(BaseVectorProvider):
         api_key = (self.config.get("api_key") or None) or None
         try:
             client = QdrantClient(url=url, api_key=api_key)
-            client.get_collections()
+            await asyncio.to_thread(client.get_collections)
             self.client = client
         except Exception as exc:  # pragma: no cover - 依赖外部服务
             raise RuntimeError(f"Failed to connect to Qdrant at {url}: {exc}") from exc

domain/config/api.py

@@ -13,6 +13,7 @@ from .types import ConfigItem
 router = APIRouter(prefix="/api/config", tags=["config"])
 
 PUBLIC_CONFIG_KEYS = [
+    "APP_DEFAULT_LANGUAGE",
     "THEME_MODE",
     "THEME_PRIMARY_COLOR",
     "THEME_BORDER_RADIUS",
@@ -56,6 +57,7 @@ async def get_all_config(
     configs = await ConfigService.get_all()
     return success(configs)
 
+
 @router.get("/public")
 @audit(action=AuditAction.READ, description="获取公开配置")
 async def get_public_config(

domain/config/service.py

@@ -10,7 +10,7 @@ from models.database import Configuration, UserAccount
 
 load_dotenv(dotenv_path=".env")
 
-VERSION = "v2.1.0"
+VERSION = "v2.2.1"
 
 
 class ConfigService:
@@ -80,6 +80,7 @@ class ConfigService:
             logo=logo,
             favicon=favicon,
             is_initialized=user_count > 0,
+            default_language=await cls.get("APP_DEFAULT_LANGUAGE", "zh"),
             app_domain=await cls.get("APP_DOMAIN"),
             file_domain=await cls.get("FILE_DOMAIN"),
         )

domain/config/types.py

@@ -14,6 +14,7 @@ class SystemStatus(BaseModel):
     logo: str
     favicon: str
     is_initialized: bool
+    default_language: str = "zh"
     app_domain: Optional[str] = None
     file_domain: Optional[str] = None
 

domain/permission/service.py

@@ -1,3 +1,4 @@
+from dataclasses import dataclass
 from typing import List, Optional
 from fastapi import HTTPException
 
@@ -17,14 +18,145 @@ from .types import (
     PERMISSION_DEFINITIONS,
 )
 
+@dataclass(slots=True)
+class PermissionContext:
+    exists: bool
+    is_admin: bool
+    path_rules: List[PathRule]
+
 
 class PermissionService:
     """权限检查服务"""
 
     # 权限检查结果缓存（简单的内存缓存）
     _cache: dict[str, tuple[bool, float]] = {}
+    _context_cache: dict[int, tuple[PermissionContext, float]] = {}
     _cache_ttl = 300  # 5分钟缓存
 
+    @classmethod
+    def _now(cls) -> float:
+        import time
+
+        return time.time()
+
+    @classmethod
+    def _is_cache_valid(cls, timestamp: float) -> bool:
+        return cls._now() - timestamp < cls._cache_ttl
+
+    @classmethod
+    def _get_cached_result(cls, cache_key: str) -> Optional[bool]:
+        cached = cls._cache.get(cache_key)
+        if not cached:
+            return None
+        result, timestamp = cached
+        if cls._is_cache_valid(timestamp):
+            return result
+        cls._cache.pop(cache_key, None)
+        return None
+
+    @classmethod
+    def _sort_path_rules(cls, rules: List[PathRule]) -> List[PathRule]:
+        return sorted(
+            rules,
+            key=lambda r: (
+                r.priority,
+                PathMatcher.get_pattern_specificity(r.path_pattern, r.is_regex),
+            ),
+            reverse=True,
+        )
+
+    @classmethod
+    def _match_sorted_path_rules(
+        cls, path: str, action: str, sorted_rules: List[PathRule]
+    ) -> Optional[bool]:
+        for rule in sorted_rules:
+            if PathMatcher.match_pattern(path, rule.path_pattern, rule.is_regex):
+                if action == PathAction.READ:
+                    return rule.can_read
+                if action == PathAction.WRITE:
+                    return rule.can_write
+                if action == PathAction.DELETE:
+                    return rule.can_delete
+                if action == PathAction.SHARE:
+                    return rule.can_share
+                return False
+        return None
+
+    @classmethod
+    async def _get_permission_context(cls, user_id: int) -> PermissionContext:
+        cached = cls._context_cache.get(user_id)
+        if cached:
+            context, timestamp = cached
+            if cls._is_cache_valid(timestamp):
+                return context
+            cls._context_cache.pop(user_id, None)
+
+        user = await UserAccount.get_or_none(id=user_id)
+        if not user:
+            context = PermissionContext(exists=False, is_admin=False, path_rules=[])
+            cls._context_cache[user_id] = (context, cls._now())
+            return context
+
+        if user.is_admin:
+            context = PermissionContext(exists=True, is_admin=True, path_rules=[])
+            cls._context_cache[user_id] = (context, cls._now())
+            return context
+
+        user_roles = await UserRole.filter(user_id=user_id)
+        role_ids = [ur.role_id for ur in user_roles]
+        if not role_ids:
+            context = PermissionContext(exists=True, is_admin=False, path_rules=[])
+            cls._context_cache[user_id] = (context, cls._now())
+            return context
+
+        path_rules = await PathRule.filter(role_id__in=role_ids)
+        context = PermissionContext(
+            exists=True,
+            is_admin=False,
+            path_rules=cls._sort_path_rules(list(path_rules)),
+        )
+        cls._context_cache[user_id] = (context, cls._now())
+        return context
+
+    @classmethod
+    def _check_path_permission_with_context(
+        cls,
+        user_id: int,
+        normalized_path: str,
+        action: str,
+        context: PermissionContext,
+    ) -> bool:
+        if not context.exists:
+            return False
+        if context.is_admin:
+            return True
+
+        checked_cache_keys: List[str] = []
+        current_path = normalized_path
+
+        while True:
+            cache_key = f"{user_id}:{current_path}:{action}"
+            cached_result = cls._get_cached_result(cache_key)
+            if cached_result is not None:
+                result = cached_result
+                break
+
+            checked_cache_keys.append(cache_key)
+            result = cls._match_sorted_path_rules(current_path, action, context.path_rules)
+            if result is not None:
+                break
+
+            parent_path = PathMatcher.get_parent_path(current_path)
+            if not parent_path:
+                result = False
+                break
+            current_path = parent_path
+
+        timestamp = cls._now()
+        for cache_key in checked_cache_keys:
+            cls._cache[cache_key] = (result, timestamp)
+        return result
+
     @classmethod
     async def check_path_permission(
         cls, user_id: int, path: str, action: str
@@ -40,51 +172,15 @@ class PermissionService:
         Returns:
             是否有权限
         """
-        import time
-
-        # 检查缓存
-        cache_key = f"{user_id}:{path}:{action}"
-        if cache_key in cls._cache:
-            result, timestamp = cls._cache[cache_key]
-            if time.time() - timestamp < cls._cache_ttl:
-                return result
-
-        # 获取用户
-        user = await UserAccount.get_or_none(id=user_id)
-        if not user:
-            return False
-
-        # 超级管理员直接放行
-        if user.is_admin:
-            cls._cache[cache_key] = (True, time.time())
-            return True
-
-        # 获取用户所有角色
-        user_roles = await UserRole.filter(user_id=user_id).prefetch_related("role")
-        role_ids = [ur.role_id for ur in user_roles]
-
-        if not role_ids:
-            cls._cache[cache_key] = (False, time.time())
-            return False
-
-        # 获取所有角色的路径规则
-        path_rules = await PathRule.filter(role_id__in=role_ids).order_by("-priority")
-
-        # 规范化路径
         normalized_path = PathMatcher.normalize_path(path)
+        cache_key = f"{user_id}:{normalized_path}:{action}"
+        cached_result = cls._get_cached_result(cache_key)
+        if cached_result is not None:
+            return cached_result
 
-        # 按优先级和具体程度匹配
+        context = await cls._get_permission_context(user_id)
-        result = cls._match_path_rules(normalized_path, action, list(path_rules))
+        result = cls._check_path_permission_with_context(user_id, normalized_path, action, context)
-
+        cls._cache[cache_key] = (result, cls._now())
-        # 如果没有匹配到规则，检查父目录（继承）
-        if result is None:
-            parent_path = PathMatcher.get_parent_path(normalized_path)
-            if parent_path:
-                result = await cls.check_path_permission(user_id, parent_path, action)
-            else:
-                result = False  # 默认拒绝
-
-        cls._cache[cache_key] = (result, time.time())
         return result
 
     @classmethod
@@ -97,31 +193,7 @@ class PermissionService:
         Returns:
             True/False 表示明确的权限结果，None 表示没有匹配到规则
         """
-        # 按优先级和具体程度排序
+        return cls._match_sorted_path_rules(path, action, cls._sort_path_rules(rules))
-        sorted_rules = sorted(
-            rules,
-            key=lambda r: (
-                r.priority,
-                PathMatcher.get_pattern_specificity(r.path_pattern, r.is_regex),
-            ),
-            reverse=True,
-        )
-
-        for rule in sorted_rules:
-            if PathMatcher.match_pattern(path, rule.path_pattern, rule.is_regex):
-                # 匹配到规则，检查具体操作权限
-                if action == PathAction.READ:
-                    return rule.can_read
-                elif action == PathAction.WRITE:
-                    return rule.can_write
-                elif action == PathAction.DELETE:
-                    return rule.can_delete
-                elif action == PathAction.SHARE:
-                    return rule.can_share
-                else:
-                    return False
-
-        return None
 
     @classmethod
     async def check_system_permission(cls, user_id: int, permission_code: str) -> bool:
@@ -251,35 +323,20 @@ class PermissionService:
         cls, user_id: int, path: str, action: str
     ) -> PathPermissionResult:
         """检查路径权限并返回详细结果"""
-        user = await UserAccount.get_or_none(id=user_id)
+        context = await cls._get_permission_context(user_id)
-        if not user:
+        if not context.exists:
             return PathPermissionResult(path=path, action=action, allowed=False)
 
-        # 超级管理员
+        if context.is_admin:
-        if user.is_admin:
             return PathPermissionResult(path=path, action=action, allowed=True)
 
-        # 获取用户角色
+        if not context.path_rules:
-        user_roles = await UserRole.filter(user_id=user_id)
-        role_ids = [ur.role_id for ur in user_roles]
-
-        if not role_ids:
             return PathPermissionResult(path=path, action=action, allowed=False)
 
-        # 获取路径规则
-        path_rules = await PathRule.filter(role_id__in=role_ids).order_by("-priority")
         normalized_path = PathMatcher.normalize_path(path)
 
-        # 查找匹配的规则
         matched_rule = None
-        for rule in sorted(
+        for rule in context.path_rules:
-            path_rules,
-            key=lambda r: (
-                r.priority,
-                PathMatcher.get_pattern_specificity(r.path_pattern, r.is_regex),
-            ),
-            reverse=True,
-        ):
             if PathMatcher.match_pattern(
                 normalized_path, rule.path_pattern, rule.is_regex
             ):
@@ -322,19 +379,30 @@ class PermissionService:
         """清除权限缓存"""
         if user_id is None:
             cls._cache.clear()
+            cls._context_cache.clear()
         else:
-            # 清除特定用户的缓存
             keys_to_delete = [k for k in cls._cache if k.startswith(f"{user_id}:")]
             for k in keys_to_delete:
                 del cls._cache[k]
+            cls._context_cache.pop(user_id, None)
 
     @classmethod
     async def filter_paths_by_permission(
         cls, user_id: int, paths: List[str], action: str
     ) -> List[str]:
         """过滤出用户有权限的路径列表"""
+        if not paths:
+            return []
+
+        context = await cls._get_permission_context(user_id)
+        if not context.exists:
+            return []
+        if context.is_admin:
+            return list(paths)
+
         result = []
         for path in paths:
-            if await cls.check_path_permission(user_id, path, action):
+            normalized_path = PathMatcher.normalize_path(path)
+            if cls._check_path_permission_with_context(user_id, normalized_path, action, context):
                 result.append(path)
         return result

domain/recent_files/__init__.py

@@ -0,0 +1,3 @@
+from .api import router
+
+__all__ = ["router"]

domain/recent_files/api.py

@@ -0,0 +1,44 @@
+from typing import Annotated
+
+from fastapi import APIRouter, Depends, Query, Request
+
+from api.response import success
+from domain.audit import AuditAction, audit
+from domain.auth import User, get_current_active_user
+
+from .service import RecentFilesService
+from .types import RecordRecentFileRequest
+
+router = APIRouter(prefix="/api/fs/recent", tags=["recent-files"])
+
+
+@router.get("/")
+@audit(action=AuditAction.READ, description="查看最近打开文件")
+async def list_recent_files(
+    request: Request,
+    current_user: Annotated[User, Depends(get_current_active_user)],
+    limit: int = Query(20, ge=1, le=200, description="返回数量"),
+):
+    data = await RecentFilesService.list_recent_files(current_user.id, limit)
+    return success(data)
+
+
+@router.post("/")
+@audit(action=AuditAction.CREATE, description="记录最近打开文件", body_fields=["path"])
+async def record_recent_file(
+    request: Request,
+    body: RecordRecentFileRequest,
+    current_user: Annotated[User, Depends(get_current_active_user)],
+):
+    data = await RecentFilesService.record_opened_file(current_user.id, body.path)
+    return success(data)
+
+
+@router.delete("/")
+@audit(action=AuditAction.DELETE, description="清空最近打开文件")
+async def clear_recent_files(
+    request: Request,
+    current_user: Annotated[User, Depends(get_current_active_user)],
+):
+    data = await RecentFilesService.clear_recent_files(current_user.id)
+    return success(data)

domain/recent_files/service.py

@@ -0,0 +1,23 @@
+from datetime import datetime, timezone
+
+from models.database import RecentFile
+
+
+class RecentFilesService:
+    @staticmethod
+    async def record_opened_file(user_id: int, path: str) -> dict:
+        item, created = await RecentFile.get_or_create(user_id=user_id, path=path)
+        if not created:
+            await RecentFile.filter(id=item.id).update(opened_at=datetime.now(timezone.utc))
+            await item.fetch_from_db()
+        return {"id": item.id, "path": item.path, "opened_at": item.opened_at.isoformat()}
+
+    @staticmethod
+    async def list_recent_files(user_id: int, limit: int) -> list[dict]:
+        items = await RecentFile.filter(user_id=user_id).order_by("-opened_at").limit(limit)
+        return [{"id": i.id, "path": i.path, "opened_at": i.opened_at.isoformat()} for i in items]
+
+    @staticmethod
+    async def clear_recent_files(user_id: int) -> dict:
+        deleted = await RecentFile.filter(user_id=user_id).delete()
+        return {"deleted": deleted}

domain/recent_files/types.py

@@ -0,0 +1,11 @@
+from pydantic import BaseModel, Field
+
+
+class RecordRecentFileRequest(BaseModel):
+    path: str = Field(..., min_length=1, max_length=4096, description="文件完整路径")
+
+
+class RecentFileItem(BaseModel):
+    id: int
+    path: str
+    opened_at: str

domain/virtual_fs/api.py

@@ -84,8 +84,9 @@ async def get_file_stat(
     full_path: str,
     request: Request,
     current_user: Annotated[User, Depends(get_current_active_user)],
+    verbose: bool = Query(False, description="是否返回扩展元数据"),
 ):
-    stat = await VirtualFSService.stat(full_path)
+    stat = await VirtualFSService.stat(full_path, verbose=verbose)
     return success(stat)
 
 

domain/virtual_fs/listing.py

@@ -1,3 +1,4 @@
+import inspect
 from typing import Any, Dict, List, Tuple
 
 from fastapi import HTTPException
@@ -14,6 +15,23 @@ from .resolver import VirtualFSResolverMixin
 
 
 class VirtualFSListingMixin(VirtualFSResolverMixin):
+    @staticmethod
+    async def _call_stat_file(
+        stat_func,
+        root: str,
+        rel: str,
+        *,
+        include_metadata: bool = False,
+    ):
+        try:
+            parameters = inspect.signature(stat_func).parameters
+        except (TypeError, ValueError):
+            parameters = {}
+
+        if "include_metadata" in parameters:
+            return await stat_func(root, rel, include_metadata=include_metadata)
+        return await stat_func(root, rel)
+
     @classmethod
     async def path_is_directory(cls, path: str) -> bool:
         adapter_instance, _, root, rel = await cls.resolve_adapter_and_rel(path)
@@ -24,7 +42,7 @@ class VirtualFSListingMixin(VirtualFSResolverMixin):
         if not callable(stat_func):
             raise HTTPException(501, detail="Adapter does not implement stat_file")
         try:
-            info = await stat_func(root, rel)
+            info = await cls._call_stat_file(stat_func, root, rel, include_metadata=False)
         except FileNotFoundError:
             raise HTTPException(404, detail="Path not found")
         if isinstance(info, dict):
@@ -71,6 +89,9 @@ class VirtualFSListingMixin(VirtualFSResolverMixin):
 
         def annotate_entry(entry: Dict) -> None:
             if not entry.get("is_dir"):
+                if entry.get("has_thumbnail") is not None:
+                    entry["has_thumbnail"] = bool(entry.get("has_thumbnail"))
+                    return
                 name = entry.get("name", "")
                 entry["has_thumbnail"] = bool(is_image_filename(name) or is_video_filename(name))
             else:
@@ -110,7 +131,12 @@ class VirtualFSListingMixin(VirtualFSResolverMixin):
                     stat_file = getattr(adapter_instance, "stat_file", None)
                     if callable(stat_file):
                         try:
-                            parent_info = await stat_file(effective_root, rel)
+                            parent_info = await cls._call_stat_file(
+                                stat_file,
+                                effective_root,
+                                rel,
+                                include_metadata=False,
+                            )
                             if isinstance(parent_info, dict):
                                 parent_info.setdefault("name", rel.split("/")[-1])
                                 parent_info["is_dir"] = bool(parent_info.get("is_dir", True))
@@ -121,7 +147,12 @@ class VirtualFSListingMixin(VirtualFSResolverMixin):
                     stat_file = getattr(adapter_instance, "stat_file", None)
                     if callable(stat_file):
                         try:
-                            parent_info = await stat_file(effective_root, parent_rel)
+                            parent_info = await cls._call_stat_file(
+                                stat_file,
+                                effective_root,
+                                parent_rel,
+                                include_metadata=False,
+                            )
                             if isinstance(parent_info, dict):
                                 parent_info.setdefault("name", parent_rel.split("/")[-1])
                                 parent_info["is_dir"] = bool(parent_info.get("is_dir", True))
@@ -222,13 +253,18 @@ class VirtualFSListingMixin(VirtualFSResolverMixin):
         }
 
     @classmethod
-    async def stat_file(cls, path: str):
+    async def stat_file(cls, path: str, verbose: bool = False):
         adapter_instance, _, root, rel = await cls.resolve_adapter_and_rel(path)
         stat_func = getattr(adapter_instance, "stat_file", None)
         if not callable(stat_func):
             raise HTTPException(501, detail="Adapter does not implement stat_file")
         try:
-            info = await stat_func(root, rel)
+            info = await cls._call_stat_file(
+                stat_func,
+                root,
+                rel,
+                include_metadata=verbose,
+            )
         except FileNotFoundError as exc:
             raise HTTPException(404, detail=str(exc))
 
@@ -240,8 +276,11 @@ class VirtualFSListingMixin(VirtualFSResolverMixin):
                 is_dir = False
             rel_name = rel.rstrip("/").split("/")[-1] if rel else path.rstrip("/").split("/")[-1]
             name_hint = str(info.get("name") or rel_name or "")
-            info["has_thumbnail"] = bool(not is_dir and (is_image_filename(name_hint) or is_video_filename(name_hint)))
+            if not is_dir and info.get("has_thumbnail") is not None:
-            if not is_dir:
+                info["has_thumbnail"] = bool(info.get("has_thumbnail"))
+            else:
+                info["has_thumbnail"] = bool(not is_dir and (is_image_filename(name_hint) or is_video_filename(name_hint)))
+            if verbose and not is_dir:
                 vector_index = await cls._gather_vector_index(path)
                 if vector_index is not None:
                     info["vector_index"] = vector_index
@@ -263,38 +302,26 @@ class VirtualFSListingMixin(VirtualFSResolverMixin):
         
         过滤掉用户没有读取权限的条目
         """
-        # 首先获取完整的目录列表
         result = await cls.list_virtual_dir(path, page_num, page_size, sort_by, sort_order)
-        
-        # 检查用户是否是管理员（管理员可以看到所有内容）
-        from models.database import UserAccount
-        user = await UserAccount.get_or_none(id=user_id)
-        if user and user.is_admin:
-            return result
-        
-        # 过滤无权限的条目
         items = result.get("items", [])
         if not items:
             return result
 
         norm = cls._normalize_path(path).rstrip("/") or "/"
-        filtered_items = []
+        path_pairs: List[Tuple[str, Dict]] = []
-        
         for item in items:
             item_name = item.get("name", "")
             if norm == "/":
                 item_path = f"/{item_name}"
             else:
                 item_path = f"{norm}/{item_name}"
+            path_pairs.append((item_path, item))
 
-            # 检查用户是否有读取权限
+        allowed_paths = await PermissionService.filter_paths_by_permission(
-            has_permission = await PermissionService.check_path_permission(
+            user_id,
-                user_id, item_path, PathAction.READ
+            [item_path for item_path, _ in path_pairs],
-            )
+            PathAction.READ,
-            if has_permission:
+        )
-                filtered_items.append(item)
+        allowed_set = set(allowed_paths)
-        
+        result["items"] = [item for item_path, item in path_pairs if item_path in allowed_set]
-        # 更新结果
-        result["items"] = filtered_items
-        
         return result

domain/virtual_fs/mapping/webdav_api.py

@@ -1,6 +1,7 @@
 import base64
 import hashlib
 import mimetypes
+import uuid
 from email.utils import formatdate
 from urllib.parse import urlparse, unquote
 from typing import Optional
@@ -43,6 +44,8 @@ def _dav_headers(extra: Optional[dict] = None) -> dict:
             "MKCOL",
             "MOVE",
             "COPY",
+            "LOCK",
+            "UNLOCK",
         ]),
     }
     if extra:
@@ -157,17 +160,19 @@ def _normalize_fs_path(path: str) -> str:
     return unquote(full)
 
 
+@router.options("")
 @router.options("/{path:path}")
 @audit(action=AuditAction.READ, description="WebDAV: OPTIONS", user_kw="user")
 async def options_root(_request: Request, path: str = "", _enabled: None = Depends(_ensure_webdav_enabled)):
     return Response(status_code=200, headers=_dav_headers())
 
 
+@router.api_route("", methods=["PROPFIND"])
 @router.api_route("/{path:path}", methods=["PROPFIND"])
 @audit(action=AuditAction.READ, description="WebDAV: PROPFIND", user_kw="user")
 async def propfind(
     request: Request,
-    path: str,
+    path: str = "",
     _enabled: None = Depends(_ensure_webdav_enabled),
     user: User = Depends(_get_basic_user),
 ):
@@ -247,7 +252,10 @@ async def dav_get(
     if full_path != "/":
         await PermissionService.require_path_permission(user.id, full_path, PathAction.READ)
     range_header = request.headers.get("Range")
-    return await VirtualFSService.stream_file(full_path, range_header)
+    try:
+        return await VirtualFSService.stream_file(full_path, range_header)
+    except FileNotFoundError:
+        raise HTTPException(404, detail="Not found")
 
 
 @router.head("/{path:path}")
@@ -280,29 +288,43 @@ async def dav_head(
     return Response(status_code=200, headers=headers)
 
 
+@router.api_route("", methods=["PUT"])
 @router.api_route("/{path:path}", methods=["PUT"])
 @audit(action=AuditAction.UPLOAD, description="WebDAV: PUT", user_kw="user")
 async def dav_put(
-    path: str,
     request: Request,
+    path: str = "",
     _enabled: None = Depends(_ensure_webdav_enabled),
     user: User = Depends(_get_basic_user),
 ):
     full_path = _normalize_fs_path(path)
     await PermissionService.require_path_permission(user.id, full_path, PathAction.WRITE)
+    existed = True
+    try:
+        await VirtualFSService.stat_file(full_path)
+    except FileNotFoundError:
+        existed = False
+    except HTTPException as exc:
+        if exc.status_code == 404:
+            existed = False
+        else:
+            raise
+
     async def body_iter():
         async for chunk in request.stream():
             if chunk:
                 yield chunk
-    size = await VirtualFSService.write_file_stream(full_path, body_iter(), overwrite=True)
+
-    return Response(status_code=201, headers=_dav_headers({"Content-Length": "0"}))
+    await VirtualFSService.write_file_stream(full_path, body_iter(), overwrite=True)
+    return Response(status_code=204 if existed else 201, headers=_dav_headers({"Content-Length": "0"}))
 
 
+@router.api_route("", methods=["DELETE"])
 @router.api_route("/{path:path}", methods=["DELETE"])
 @audit(action=AuditAction.DELETE, description="WebDAV: DELETE", user_kw="user")
 async def dav_delete(
-    path: str,
     _request: Request,
+    path: str = "",
     _enabled: None = Depends(_ensure_webdav_enabled),
     user: User = Depends(_get_basic_user),
 ):
@@ -312,6 +334,58 @@ async def dav_delete(
     return Response(status_code=204, headers=_dav_headers())
 
 
+@router.api_route("", methods=["LOCK"])
+@router.api_route("/{path:path}", methods=["LOCK"])
+@audit(action=AuditAction.UPDATE, description="WebDAV: LOCK", user_kw="user")
+async def dav_lock(
+    path: str = "",
+    _request: Request = None,
+    _enabled: None = Depends(_ensure_webdav_enabled),
+    user: User = Depends(_get_basic_user),
+):
+    full_path = _normalize_fs_path(path)
+    if full_path != "/":
+        await PermissionService.require_path_permission(user.id, full_path, PathAction.WRITE)
+
+    token = f"opaquelocktoken:{uuid.uuid4()}"
+    ns = "{DAV:}"
+    prop = ET.Element(ns + "prop")
+    lockdiscovery = ET.SubElement(prop, ns + "lockdiscovery")
+    activelock = ET.SubElement(lockdiscovery, ns + "activelock")
+    locktype = ET.SubElement(activelock, ns + "locktype")
+    ET.SubElement(locktype, ns + "write")
+    lockscope = ET.SubElement(activelock, ns + "lockscope")
+    ET.SubElement(lockscope, ns + "exclusive")
+    depth = ET.SubElement(activelock, ns + "depth")
+    depth.text = "Infinity"
+    locktoken = ET.SubElement(activelock, ns + "locktoken")
+    href = ET.SubElement(locktoken, ns + "href")
+    href.text = token
+
+    xml = ET.tostring(prop, encoding="utf-8", xml_declaration=True)
+    return Response(
+        content=xml,
+        status_code=200,
+        media_type='application/xml; charset="utf-8"',
+        headers=_dav_headers({"Lock-Token": f"<{token}>"}),
+    )
+
+
+@router.api_route("", methods=["UNLOCK"])
+@router.api_route("/{path:path}", methods=["UNLOCK"])
+@audit(action=AuditAction.UPDATE, description="WebDAV: UNLOCK", user_kw="user")
+async def dav_unlock(
+    path: str = "",
+    _request: Request = None,
+    _enabled: None = Depends(_ensure_webdav_enabled),
+    user: User = Depends(_get_basic_user),
+):
+    full_path = _normalize_fs_path(path)
+    if full_path != "/":
+        await PermissionService.require_path_permission(user.id, full_path, PathAction.WRITE)
+    return Response(status_code=204, headers=_dav_headers())
+
+
 @router.api_route("/{path:path}", methods=["MKCOL"])
 @audit(action=AuditAction.CREATE, description="WebDAV: MKCOL", user_kw="user")
 async def dav_mkcol(

domain/virtual_fs/routes.py

@@ -89,8 +89,17 @@ class VirtualFSRouteMixin(VirtualFSTempLinkMixin):
         adapter, mount, root, rel = await cls.resolve_adapter_and_rel(full_path)
         if not rel or rel.endswith("/"):
             raise HTTPException(400, detail="Not a file")
-        if not (is_image_filename(rel) or is_video_filename(rel)):
+        has_native_thumb = False
-            raise HTTPException(404, detail="Not an image or video")
+        if callable(getattr(adapter, "get_thumbnail", None)):
+            stat_file = getattr(adapter, "stat_file", None)
+            if callable(stat_file):
+                try:
+                    stat = await stat_file(root, rel)
+                    has_native_thumb = bool(isinstance(stat, dict) and stat.get("has_thumbnail"))
+                except Exception:
+                    has_native_thumb = False
+        if not (is_image_filename(rel) or is_video_filename(rel) or has_native_thumb):
+            raise HTTPException(404, detail="Not an image, video, or native thumbnail file")
         data, mime, key = await get_or_create_thumb(adapter, mount.id, root, rel, w, h, fit)  # type: ignore
         headers = {
             "Cache-Control": "public, max-age=3600",
@@ -144,9 +153,9 @@ class VirtualFSRouteMixin(VirtualFSTempLinkMixin):
         return response
 
     @classmethod
-    async def stat(cls, full_path: str):
+    async def stat(cls, full_path: str, verbose: bool = False):
         full_path = cls._normalize_path(full_path)
-        return await cls.stat_file(full_path)
+        return await cls.stat_file(full_path, verbose=verbose)
 
     @classmethod
     async def write_uploaded_file(cls, full_path: str, data: bytes):

domain/virtual_fs/search/search_api.py

@@ -28,12 +28,12 @@ async def search_files(
     data = await VirtualFSSearchService.search(q, top_k, mode, page, page_size)
     items = data.get("items") if isinstance(data, dict) else None
     if isinstance(items, list) and items:
-        filtered = []
+        path_pairs = [(str(item.path), item) for item in items if getattr(item, "path", None)]
-        for item in items:
+        allowed_paths = await PermissionService.filter_paths_by_permission(
-            path = getattr(item, "path", None)
+            user.id,
-            if not path:
+            [path for path, _ in path_pairs],
-                continue
+            PathAction.READ,
-            if await PermissionService.check_path_permission(user.id, str(path), PathAction.READ):
+        )
-                filtered.append(item)
+        allowed_set = set(allowed_paths)
-        data["items"] = filtered
+        data["items"] = [item for path, item in path_pairs if path in allowed_set]
     return success(data)

domain/virtual_fs/thumbnail.py

@@ -23,6 +23,7 @@ VIDEO_HEAD_FALLBACK_LIMIT = 4 * 1024 * 1024  # 4MB
 VIDEO_THUMB_SEEK_SECONDS = (15, 10, 5, 3, 1, 0)
 VIDEO_BLACK_FRAME_MEAN_THRESHOLD = 12.0
 CACHE_ROOT = Path('data/.thumb_cache')
+THUMB_CACHE_VERSION = "v2"
 
 
 def is_image_filename(name: str) -> bool:
@@ -47,7 +48,7 @@ def is_video_filename(name: str) -> bool:
 
 
 def _cache_key(adapter_id: int, rel: str, size: int, mtime: int, w: int, h: int, fit: str) -> str:
-    raw = f"{adapter_id}|{rel}|{size}|{mtime}|{w}x{h}|{fit}".encode()
+    raw = f"{THUMB_CACHE_VERSION}|{adapter_id}|{rel}|{size}|{mtime}|{w}x{h}|{fit}".encode()
     return hashlib.sha1(raw).hexdigest()
 
 
@@ -385,8 +386,11 @@ async def get_or_create_thumb(adapter, adapter_id: int, root: str, rel: str, w:
     stat = await adapter.stat_file(root, rel)
     size = int(stat.get('size') or 0)
     is_video = is_video_filename(rel)
-    if not is_video and size > MAX_IMAGE_SOURCE_SIZE:
+    is_image = is_image_filename(rel)
-        raise HTTPException(400, detail="Image too large for thumbnail")
+    get_thumb_impl = getattr(adapter, "get_thumbnail", None)
+    should_try_native_thumb = callable(get_thumb_impl) and (
+        is_image or is_video or bool(stat.get("has_thumbnail"))
+    )
 
     key = _cache_key(adapter_id, rel, size, int(
         stat.get('mtime', 0)), w, h, fit)
@@ -397,8 +401,7 @@ async def get_or_create_thumb(adapter, adapter_id: int, root: str, rel: str, w:
     _ensure_cache_dir(path)
     thumb_bytes, mime = None, None
 
-    get_thumb_impl = getattr(adapter, "get_thumbnail", None)
+    if should_try_native_thumb:
-    if callable(get_thumb_impl):
         size_str = "large" if w > 400 else "medium" if w > 100 else "small"
         native_thumb_bytes = await get_thumb_impl(root, rel, size_str)
 
@@ -406,15 +409,15 @@ async def get_or_create_thumb(adapter, adapter_id: int, root: str, rel: str, w:
             try:
                 from PIL import Image
                 im = Image.open(io.BytesIO(native_thumb_bytes))
-                buf = io.BytesIO()
+                thumb_bytes, mime = _image_to_webp(im, w, h, fit)
-                im.save(buf, 'WEBP', quality=85)
-                thumb_bytes = buf.getvalue()
-                mime = 'image/webp'
             except Exception as e:
                 print(
                     f"Failed to convert native thumbnail to WebP: {e}, falling back.")
                 thumb_bytes, mime = None, None
 
+        if is_video and getattr(adapter, "native_video_thumbnail_only", False) and not thumb_bytes:
+            raise HTTPException(404, detail="Native video thumbnail unavailable")
+
     if not thumb_bytes:
         if is_video:
             async def _maybe_transcoding_thumb() -> Tuple[bytes, str] | None:
@@ -493,7 +496,9 @@ async def get_or_create_thumb(adapter, adapter_id: int, root: str, rel: str, w:
                         thumb_bytes, mime = retry_thumb, retry_mime
                 except Exception:
                     pass
-        else:
+        elif is_image:
+            if size > MAX_IMAGE_SOURCE_SIZE:
+                raise HTTPException(400, detail="Image too large for thumbnail")
             read_data = await adapter.read_file(root, rel)
             try:
                 thumb_bytes, mime = generate_thumb(
@@ -502,6 +507,8 @@ async def get_or_create_thumb(adapter, adapter_id: int, root: str, rel: str, w:
                 print(e)
                 raise HTTPException(
                     500, detail=f"Thumbnail generation failed: {e}")
+        else:
+            raise HTTPException(500, detail="Native thumbnail unavailable")
 
     if thumb_bytes:
         path.write_bytes(thumb_bytes)

main.py

@@ -3,6 +3,7 @@ from pathlib import Path
 from contextlib import asynccontextmanager
 
 from domain.adapters import runtime_registry
+from domain.agent.mcp import MCP_HTTP_APP
 from domain.config import ConfigService, VERSION
 from db.session import close_db, init_db
 from api.routers import include_routers
@@ -80,12 +81,13 @@ async def lifespan(app: FastAPI):
     # 在所有路由加载完成后，挂载静态文件服务（放在最后以避免覆盖 API 路由）
     app.mount("/", SPAStaticFiles(directory="web/dist", html=True, check_dir=False), name="static")
 
-    try:
+    async with MCP_HTTP_APP.router.lifespan_context(MCP_HTTP_APP):
-        yield
+        try:
-    finally:
+            yield
-        await task_scheduler.stop()
+        finally:
-        await task_queue_service.stop_worker()
+            await task_scheduler.stop()
-        await close_db()
+            await task_queue_service.stop_worker()
+            await close_db()
 
 
 def create_app() -> FastAPI:
@@ -95,6 +97,7 @@ def create_app() -> FastAPI:
         lifespan=lifespan,
     )
     include_routers(app)
+    app.mount("/api/mcp", MCP_HTTP_APP, name="mcp")
     app.add_exception_handler(HTTPException, http_exception_handler)
     app.add_exception_handler(RequestValidationError, validation_exception_handler)
     app.add_exception_handler(httpx.HTTPStatusError, httpx_exception_handler)

models/database.py

@@ -234,6 +234,19 @@ class ShareLink(Model):
         table = "share_links"
 
 
+class RecentFile(Model):
+    id = fields.IntField(pk=True)
+    user: fields.ForeignKeyRelation[UserAccount] = fields.ForeignKeyField(
+        "models.UserAccount", related_name="recent_files", on_delete=fields.CASCADE
+    )
+    path = fields.CharField(max_length=4096)
+    opened_at = fields.DatetimeField(auto_now=True)
+
+    class Meta:
+        table = "recent_files"
+        unique_together = (("user", "path"),)
+
+
 class Plugin(Model):
     id = fields.IntField(pk=True)
     key = fields.CharField(max_length=100, unique=True)  # 插件唯一标识

pyproject.toml

@@ -9,14 +9,15 @@ dependencies = [
     "bcrypt>=5.0.0",
     "croniter>=6.0.0",
     "fastapi>=0.127.0",
+    "mcp>=1.26.0",
     "paramiko>=4.0.0",
-    "pillow>=12.0.0",
+    "pillow>=12.2.0",
     "pydantic[email]>=2.12.5",
     "pyjwt>=2.10.1",
     "pymilvus[milvus-lite]>=2.6.5",
     "pysocks>=1.7.1",
-    "python-dotenv>=1.2.1",
+    "python-dotenv>=1.2.2",
-    "python-multipart>=0.0.21",
+    "python-multipart>=0.0.26",
     "qdrant-client>=1.16.2",
     "setuptools<82",
     "telethon>=1.42.0",

uv.lock

@@ -63,7 +63,7 @@ wheels = [
 
 [[package]]
 name = "aiohttp"
-version = "3.13.3"
+version = "3.13.4"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "aiohappyeyeballs" },
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     { name = "propcache" },
     { name = "yarl" },
 ]
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+    { url = "https://files.pythonhosted.org/packages/d0/02/fa464cdfbe6b26e0600b62c528b72d8608f5cc49f96b8d6e38c95d60c676/rpds_py-0.30.0-cp314-cp314t-win_amd64.whl", hash = "sha256:27f4b0e92de5bfbc6f86e43959e6edd1425c33b5e69aab0984a72047f2bcf1e3", size = 226532, upload-time = "2025-11-30T20:24:14.634Z" },
+]
+
 [[package]]
 name = "rsa"
 version = "4.9.1"
@@ -1183,6 +1315,19 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/b7/ce/149a00dd41f10bc29e5921b496af8b574d8413afcd5e30dfa0ed46c2cc5e/six-1.17.0-py2.py3-none-any.whl", hash = "sha256:4721f391ed90541fddacab5acf947aa0d3dc7d27b2e1e8eda2be8970586c3274", size = 11050, upload-time = "2024-12-04T17:35:26.475Z" },
 ]
 
+[[package]]
+name = "sse-starlette"
+version = "3.3.2"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "anyio" },
+    { name = "starlette" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/5a/9f/c3695c2d2d4ef70072c3a06992850498b01c6bc9be531950813716b426fa/sse_starlette-3.3.2.tar.gz", hash = "sha256:678fca55a1945c734d8472a6cad186a55ab02840b4f6786f5ee8770970579dcd", size = 32326, upload-time = "2026-02-28T11:24:34.36Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/61/28/8cb142d3fe80c4a2d8af54ca0b003f47ce0ba920974e7990fa6e016402d1/sse_starlette-3.3.2-py3-none-any.whl", hash = "sha256:5c3ea3dad425c601236726af2f27689b74494643f57017cafcb6f8c9acfbb862", size = 14270, upload-time = "2026-02-28T11:24:32.984Z" },
+]
+
 [[package]]
 name = "starlette"
 version = "0.52.1"

web/src/App.tsx

@@ -10,38 +10,7 @@ import { Routes, Route, Navigate } from 'react-router';
 import SetupPage from './pages/SetupPage.tsx';
 import { I18nProvider } from './i18n';
 
-function AppInner() {
+function AppInner({ status }: { status: SystemStatus }) {
-  const [status, setStatus] = useState<SystemStatus | null>(null);
-  useEffect(() => {
-    async function checkInitialization() {
-      try {
-        const status = await getStatus();
-        setStatus(status);
-        document.title = status.title;
-        let favicon = document.querySelector("link[rel*='icon']") as HTMLLinkElement | null;
-        if (!favicon) {
-          favicon = document.createElement('link');
-          favicon.rel = 'icon';
-          document.head.appendChild(favicon);
-        }
-        if (favicon) {
-          favicon.href = status.favicon || status.logo;
-        }
-      } catch (error) {
-        console.error("Failed to check initialization status:", error);
-      }
-    }
-    checkInitialization();
-  }, []);
-
-  if (status === null) {
-    return (
-      <div style={{ display: 'flex', justifyContent: 'center', alignItems: 'center', height: '100vh' }}>
-        <Spin size="large" />
-      </div>
-    );
-  }
-
   return (
     <SystemContext.Provider value={status}>
       <AuthProvider>
@@ -61,9 +30,41 @@ function AppInner() {
 }
 
 export default function App() {
+  const [status, setStatus] = useState<SystemStatus | null>(null);
+
+  useEffect(() => {
+    async function checkInitialization() {
+      try {
+        const nextStatus = await getStatus();
+        setStatus(nextStatus);
+        document.title = nextStatus.title;
+        let favicon = document.querySelector("link[rel*='icon']") as HTMLLinkElement | null;
+        if (!favicon) {
+          favicon = document.createElement('link');
+          favicon.rel = 'icon';
+          document.head.appendChild(favicon);
+        }
+        if (favicon) {
+          favicon.href = nextStatus.favicon || nextStatus.logo;
+        }
+      } catch (error) {
+        console.error("Failed to check initialization status:", error);
+      }
+    }
+    checkInitialization();
+  }, []);
+
+  if (status === null) {
+    return (
+      <div style={{ display: 'flex', justifyContent: 'center', alignItems: 'center', height: '100vh' }}>
+        <Spin size="large" />
+      </div>
+    );
+  }
+
   return (
-    <I18nProvider>
+    <I18nProvider defaultLanguage={status.default_language}>
-      <AppInner />
+      <AppInner status={status} />
     </I18nProvider>
   );
 }

web/src/api/adapters.ts

@@ -10,13 +10,28 @@ export interface AdapterItem {
   sub_path?: string | null;
 }
 
+export interface AdapterUsage {
+  id: number;
+  name: string;
+  type: string;
+  path: string;
+  supported: boolean;
+  used_bytes?: number | null;
+  total_bytes?: number | null;
+  free_bytes?: number | null;
+  source?: string | null;
+  scope?: string | null;
+  reason?: string | null;
+}
+
 export interface AdapterTypeField {
   key: string;
   label: string;
-  type: 'string' | 'password' | 'number' | 'boolean';
+  type: 'string' | 'password' | 'number' | 'boolean' | 'select';
   required?: boolean;
   placeholder?: string;
   default?: any;
+  options?: string[];
 }
 
 export interface AdapterTypeMeta {
@@ -30,4 +45,6 @@ export const adaptersApi = {
   update: (id: number, payload: Omit<AdapterItem, 'id'>) => request<AdapterItem>(`/adapters/${id}`, { method: 'PUT', json: payload }),
   remove: (id: number) => request<void>(`/adapters/${id}`, { method: 'DELETE' }),
   available: () => request<AdapterTypeMeta[]>('/adapters/available'),
+  usage: () => request<AdapterUsage[]>('/adapters/usage'),
+  usageById: (id: number) => request<AdapterUsage>(`/adapters/${id}/usage`),
 };

web/src/api/agent.ts

@@ -9,12 +9,18 @@ export interface AgentChatContext {
 export interface AgentChatRequest {
   messages: AgentChatMessage[];
   auto_execute?: boolean;
-  approved_tool_call_ids?: string[];
+  approved_mcp_call_ids?: string[];
-  rejected_tool_call_ids?: string[];
+  rejected_mcp_call_ids?: string[];
   context?: AgentChatContext;
 }
 
-export interface PendingToolCall {
+export interface McpCall {
+  id: string;
+  name: string;
+  arguments: Record<string, any>;
+}
+
+export interface PendingMcpCall {
   id: string;
   name: string;
   arguments: Record<string, any>;
@@ -23,16 +29,16 @@ export interface PendingToolCall {
 
 export interface AgentChatResponse {
   messages: AgentChatMessage[];
-  pending_tool_calls?: PendingToolCall[];
+  pending_mcp_calls?: PendingMcpCall[];
 }
 
 export type AgentSseEvent =
   | { event: 'assistant_start'; data: { id: string } }
   | { event: 'assistant_delta'; data: { id: string; delta: string } }
   | { event: 'assistant_end'; data: { id: string; message: AgentChatMessage } }
-  | { event: 'tool_start'; data: { tool_call_id: string; name: string } }
+  | { event: 'mcp_call_start'; data: { mcp_call_id: string; name: string } }
-  | { event: 'tool_end'; data: { tool_call_id: string; name: string; message: AgentChatMessage } }
+  | { event: 'mcp_call_end'; data: { mcp_call_id: string; name: string; message: AgentChatMessage } }
-  | { event: 'pending'; data: { pending_tool_calls: PendingToolCall[] } }
+  | { event: 'pending'; data: { pending_mcp_calls: PendingMcpCall[] } }
   | { event: 'done'; data: AgentChatResponse };
 
 export const agentApi = {

web/src/api/client.ts

@@ -71,7 +71,7 @@ async function request<T = any>(url: string, options: RequestOptions = {}): Prom
 }
 
 export { vfsApi, type VfsEntry, type DirListing } from './vfs';
-export { adaptersApi, type AdapterItem, type AdapterTypeField, type AdapterTypeMeta } from './adapters';
+export { adaptersApi, type AdapterItem, type AdapterTypeField, type AdapterTypeMeta, type AdapterUsage } from './adapters';
 export { shareApi, type ShareInfo, type ShareInfoWithPassword } from './share';
 export { offlineDownloadsApi, type OfflineDownloadTask, type OfflineDownloadCreate, type TaskProgress } from './offlineDownloads';
 export default request;

web/src/api/config.ts

@@ -1,4 +1,5 @@
 import request from './client';
+import type { Lang } from '../i18n/lang';
 
 export async function getConfig(key: string) {
   return request<{ key: string; value: string }>('/config/?key=' + encodeURIComponent(key));
@@ -25,6 +26,7 @@ export interface SystemStatus {
   logo: string;
   favicon: string;
   is_initialized: boolean;
+  default_language?: Lang;
   app_domain?: string;
   file_domain?: string;
 }

web/src/api/vfs.ts

@@ -86,7 +86,12 @@ export const vfsApi = {
   thumb: (path: string, w=256, h=256, fit='cover') =>
     request<ArrayBuffer>(`/fs/thumb/${encodeURI(path.replace(/^\/+/, ''))}?w=${w}&h=${h}&fit=${fit}`),
   streamUrl: (path: string) => `${API_BASE_URL}/fs/stream/${encodeURI(path.replace(/^\/+/, ''))}`,
-  stat: (path: string) => request(`/fs/stat/${encodeURI(path.replace(/^\/+/, ''))}`),
+  stat: (path: string, options?: { verbose?: boolean }) => {
+    const params = new URLSearchParams();
+    if (options?.verbose) params.set('verbose', 'true');
+    const query = params.toString();
+    return request(`/fs/stat/${encodeURI(path.replace(/^\/+/, ''))}${query ? `?${query}` : ''}`);
+  },
   getTempLinkToken: (path: string, expiresIn: number = 3600) =>
     request<{token: string, path: string, url: string}>(`/fs/temp-link/${encodeURI(path.replace(/^\/+/, ''))}?expires_in=${expiresIn}`),
   getTempPublicUrl: (token: string) => `${API_BASE_URL}/fs/public/${token}`,

web/src/apps/PluginHost/index.tsx

@@ -1,6 +1,7 @@
 import React, { useEffect, useMemo, useRef } from 'react';
 import type { AppComponentProps, AppOpenComponentProps } from '../types';
 import type { PluginItem } from '../../api/plugins';
+import { useI18n } from '../../i18n';
 
 export interface PluginAppHostProps extends AppComponentProps {
   plugin: PluginItem;
@@ -34,6 +35,7 @@ export const PluginAppHost: React.FC<PluginAppHostProps> = ({
   entry,
   onRequestClose,
 }) => {
+  const { lang } = useI18n();
   const iframeRef = useRef<HTMLIFrameElement>(null);
   const onCloseRef = useRef(onRequestClose);
   onCloseRef.current = onRequestClose;
@@ -45,10 +47,11 @@ export const PluginAppHost: React.FC<PluginAppHostProps> = ({
         pluginVersion: plugin.version || '',
         pluginStyles: JSON.stringify(getPluginStylePaths(plugin)),
         mode: 'file',
+        lang,
         filePath,
         entry: JSON.stringify(entry),
       }),
-    [plugin, filePath, entry]
+    [plugin, filePath, entry, lang]
   );
 
   useEffect(() => {
@@ -86,6 +89,7 @@ export interface PluginAppOpenHostProps extends AppOpenComponentProps {
  * 注意：同源且不加 sandbox 时，不是安全沙箱（插件仍可通过 window.parent 访问宿主）。
  */
 export const PluginAppOpenHost: React.FC<PluginAppOpenHostProps> = ({ plugin, onRequestClose }) => {
+  const { lang } = useI18n();
   const iframeRef = useRef<HTMLIFrameElement>(null);
   const onCloseRef = useRef(onRequestClose);
   onCloseRef.current = onRequestClose;
@@ -97,8 +101,9 @@ export const PluginAppOpenHost: React.FC<PluginAppOpenHostProps> = ({ plugin, on
         pluginVersion: plugin.version || '',
         pluginStyles: JSON.stringify(getPluginStylePaths(plugin)),
         mode: 'app',
+        lang,
       }),
-    [plugin]
+    [plugin, lang]
   );
 
   useEffect(() => {

web/src/components/AiAgentWidget.tsx

@@ -3,7 +3,7 @@ import { Avatar, Button, Divider, Flex, Input, List, Modal, Space, Switch, Tag,
 import { RobotOutlined, SendOutlined, DeleteOutlined, ToolOutlined, DownOutlined, UpOutlined, CodeOutlined, CopyOutlined, LoadingOutlined } from '@ant-design/icons';
 import ReactMarkdown from 'react-markdown';
 import type { TextAreaRef } from 'antd/es/input/TextArea';
-import { agentApi, type AgentChatMessage, type PendingToolCall } from '../api/agent';
+import { agentApi, type AgentChatMessage, type PendingMcpCall } from '../api/agent';
 import { useI18n } from '../i18n';
 import '../styles/ai-agent.css';
 
@@ -108,7 +108,7 @@ const AiAgentWidget = memo(function AiAgentWidget({ currentPath, open, onOpenCha
   const [input, setInput] = useState('');
   const [loading, setLoading] = useState(false);
   const [messages, setMessages] = useState<AgentChatMessage[]>([]);
-  const [pending, setPending] = useState<PendingToolCall[]>([]);
+  const [pending, setPending] = useState<PendingMcpCall[]>([]);
   const [expandedTools, setExpandedTools] = useState<Record<string, boolean>>({});
   const [expandedRaw, setExpandedRaw] = useState<Record<string, boolean>>({});
   const [runningTools, setRunningTools] = useState<Record<string, string>>({});
@@ -153,16 +153,14 @@ const AiAgentWidget = memo(function AiAgentWidget({ currentPath, open, onOpenCha
     for (const msg of messages) {
       if (!msg || typeof msg !== 'object') continue;
       if (msg.role !== 'assistant') continue;
-      const toolCalls = (msg as any).tool_calls;
+      const toolCalls = (msg as any).mcp_calls;
       if (!Array.isArray(toolCalls)) continue;
       for (const call of toolCalls) {
         const id = typeof call?.id === 'string' ? call.id : '';
-        const fn = call?.function;
+        const name = typeof call?.name === 'string' ? call.name : '';
-        const name = typeof fn?.name === 'string' ? fn.name : '';
+        const args = isPlainObject(call?.arguments) ? call.arguments : {};
-        const rawArgs = typeof fn?.arguments === 'string' ? fn.arguments : '';
         if (!id || !name) continue;
-        const parsedArgs = tryParseJson<Record<string, any>>(rawArgs) || {};
+        map.set(id, { name, args });
-        map.set(id, { name, args: parsedArgs });
       }
     }
     return map;
@@ -179,7 +177,7 @@ const AiAgentWidget = memo(function AiAgentWidget({ currentPath, open, onOpenCha
     assistantIndexRef.current = {};
 
     setLoading(true);
-    const approvedIds = payload.approved_tool_call_ids || [];
+    const approvedIds = payload.approved_mcp_call_ids || [];
     if (Array.isArray(approvedIds) && approvedIds.length > 0) {
       const preRunning: Record<string, string> = {};
       approvedIds.forEach((id) => {
@@ -196,8 +194,8 @@ const AiAgentWidget = memo(function AiAgentWidget({ currentPath, open, onOpenCha
           messages: payload.messages,
           auto_execute: autoExecute,
           context: effectivePath ? { current_path: effectivePath } : undefined,
-          approved_tool_call_ids: payload.approved_tool_call_ids,
+          approved_mcp_call_ids: payload.approved_mcp_call_ids,
-          rejected_tool_call_ids: payload.rejected_tool_call_ids,
+          rejected_mcp_call_ids: payload.rejected_mcp_call_ids,
         },
         (evt) => {
           if (seq !== streamSeqRef.current) return;
@@ -241,16 +239,16 @@ const AiAgentWidget = memo(function AiAgentWidget({ currentPath, open, onOpenCha
               delete assistantIndexRef.current[id];
               return;
             }
-            case 'tool_start': {
+            case 'mcp_call_start': {
-              const toolCallId = String((evt.data as any)?.tool_call_id || '');
+              const toolCallId = String((evt.data as any)?.mcp_call_id || '');
               const name = String((evt.data as any)?.name || '');
               if (!toolCallId) return;
               if (name) toolNameByIdRef.current[toolCallId] = name;
               setRunningTools((prev) => ({ ...prev, [toolCallId]: name || prev[toolCallId] || '' }));
               return;
             }
-            case 'tool_end': {
+            case 'mcp_call_end': {
-              const toolCallId = String((evt.data as any)?.tool_call_id || '');
+              const toolCallId = String((evt.data as any)?.mcp_call_id || '');
               const name = String((evt.data as any)?.name || '');
               const msg = (evt.data as any)?.message;
               if (toolCallId && name) toolNameByIdRef.current[toolCallId] = name;
@@ -267,14 +265,14 @@ const AiAgentWidget = memo(function AiAgentWidget({ currentPath, open, onOpenCha
               return;
             }
             case 'pending': {
-              const items = Array.isArray((evt.data as any)?.pending_tool_calls) ? (evt.data as any).pending_tool_calls : [];
+              const items = Array.isArray((evt.data as any)?.pending_mcp_calls) ? (evt.data as any).pending_mcp_calls : [];
               setPending(items);
               return;
             }
             case 'done': {
               const base = baseMessagesRef.current || [];
               const newMessages = Array.isArray((evt.data as any)?.messages) ? (evt.data as any).messages : [];
-              const nextPending = Array.isArray((evt.data as any)?.pending_tool_calls) ? (evt.data as any).pending_tool_calls : [];
+              const nextPending = Array.isArray((evt.data as any)?.pending_mcp_calls) ? (evt.data as any).pending_mcp_calls : [];
               setMessages([...base, ...newMessages]);
               setPending(nextPending);
               setRunningTools({});
@@ -326,23 +324,23 @@ const AiAgentWidget = memo(function AiAgentWidget({ currentPath, open, onOpenCha
   }, []);
 
   const approveOne = useCallback(async (id: string) => {
-    await runStream({ messages, approved_tool_call_ids: [id] });
+    await runStream({ messages, approved_mcp_call_ids: [id] });
   }, [messages, runStream]);
 
   const rejectOne = useCallback(async (id: string) => {
-    await runStream({ messages, rejected_tool_call_ids: [id] });
+    await runStream({ messages, rejected_mcp_call_ids: [id] });
   }, [messages, runStream]);
 
   const approveAll = useCallback(async () => {
     const ids = pending.map((p) => p.id).filter(Boolean);
     if (ids.length === 0) return;
-    await runStream({ messages, approved_tool_call_ids: ids });
+    await runStream({ messages, approved_mcp_call_ids: ids });
   }, [messages, pending, runStream]);
 
   const rejectAll = useCallback(async () => {
     const ids = pending.map((p) => p.id).filter(Boolean);
     if (ids.length === 0) return;
-    await runStream({ messages, rejected_tool_call_ids: ids });
+    await runStream({ messages, rejected_mcp_call_ids: ids });
   }, [messages, pending, runStream]);
 
   const messageItems = useMemo(() => {
@@ -665,7 +663,7 @@ const AiAgentWidget = memo(function AiAgentWidget({ currentPath, open, onOpenCha
                   const role = String((m as any).role);
                   const isUser = role === 'user';
                   const isTool = role === 'tool';
-                  const toolCallId = typeof (m as any).tool_call_id === 'string' ? String((m as any).tool_call_id) : '';
+                  const toolCallId = typeof (m as any).mcp_call_id === 'string' ? String((m as any).mcp_call_id) : '';
                   const toolInfo = toolCallId ? toolCallsById.get(toolCallId) : null;
                   const toolName = toolInfo?.name || (toolCallId ? toolNameByIdRef.current[toolCallId] : '') || '';
                   const msgKey = toolCallId ? `tool:${toolCallId}` : `${role}:${idx}`;

web/src/i18n/index.tsx

@@ -2,8 +2,8 @@ import { createContext, useCallback, useContext, useMemo, useState, useEffect }
 import type { PropsWithChildren } from 'react';
 import en from './locales/en.json';
 import zhOverrides from './locales/zh.json';
+import { normalizeLang, persistLang, readStoredLang, type Lang } from './lang';
 
-type Lang = 'zh' | 'en';
 type Dict = Record<string, string>;
 
 const dicts: Record<Lang, Dict> = {
@@ -11,9 +11,13 @@ const dicts: Record<Lang, Dict> = {
   zh: { ...en, ...zhOverrides },
 };
 
+interface SetLangOptions {
+  persist?: boolean;
+}
+
 export interface I18nContextValue {
   lang: Lang;
-  setLang: (lang: Lang) => void;
+  setLang: (lang: Lang, options?: SetLangOptions) => void;
   t: (key: string, params?: Record<string, string | number>) => string;
 }
 
@@ -24,13 +28,26 @@ function interpolate(template: string, params?: Record<string, string | number>)
   return template.replace(/\{(\w+)\}/g, (_, k) => String(params[k] ?? `{${k}}`));
 }
 
-export function I18nProvider({ children }: PropsWithChildren) {
+interface I18nProviderProps {
-  const [lang, setLangState] = useState<Lang>(() => (localStorage.getItem('lang') as Lang) || 'zh');
+  defaultLanguage?: Lang;
+}
 
-  const setLang = useCallback((l: Lang) => {
+export function I18nProvider({ children, defaultLanguage }: PropsWithChildren<I18nProviderProps>) {
-    setLangState(l);
+  const fallbackLang = normalizeLang(defaultLanguage, 'zh');
-    localStorage.setItem('lang', l);
+  const [lang, setLangState] = useState<Lang>(() => readStoredLang() ?? fallbackLang);
-  }, []);
+
+  const setLang = useCallback((nextLang: Lang, options?: SetLangOptions) => {
+    const normalized = normalizeLang(nextLang, fallbackLang);
+    setLangState(normalized);
+    if (options?.persist === false) return;
+    persistLang(normalized);
+  }, [fallbackLang]);
+
+  useEffect(() => {
+    if (!readStoredLang()) {
+      setLangState(fallbackLang);
+    }
+  }, [fallbackLang]);
 
   useEffect(() => {
     document.documentElement.lang = lang;

web/src/i18n/lang.ts

@@ -0,0 +1,42 @@
+export type Lang = 'zh' | 'en';
+
+const LANG_STORAGE_KEY = 'lang';
+
+export function parseLang(raw: unknown): Lang | null {
+  if (typeof raw !== 'string') return null;
+  const value = raw.trim().toLowerCase();
+  if (!value) return null;
+  if (value === 'en' || value.startsWith('en-')) return 'en';
+  if (value === 'zh' || value.startsWith('zh-')) return 'zh';
+  return null;
+}
+
+export function normalizeLang(raw: unknown, fallback: Lang = 'zh'): Lang {
+  return parseLang(raw) ?? fallback;
+}
+
+export function readStoredLang(): Lang | null {
+  if (typeof window === 'undefined') return null;
+  try {
+    return parseLang(window.localStorage.getItem(LANG_STORAGE_KEY));
+  } catch {
+    return null;
+  }
+}
+
+export function persistLang(lang: Lang): void {
+  if (typeof window === 'undefined') return;
+  try {
+    window.localStorage.setItem(LANG_STORAGE_KEY, lang);
+  } catch {
+    void 0;
+  }
+}
+
+export function getActiveLang(fallback: Lang = 'zh'): Lang {
+  if (typeof document !== 'undefined') {
+    const documentLang = parseLang(document.documentElement.lang);
+    if (documentLang) return documentLang;
+  }
+  return readStoredLang() ?? fallback;
+}

web/src/i18n/locales/en.json

@@ -27,10 +27,13 @@
   "Register failed": "Register failed",
   "Please input email!": "Please input email!",
   "Profile": "Profile",
+  "Client Authorization": "Client Authorization",
   "Account Settings": "Account Settings",
   "Language": "Language",
   "Chinese": "中文",
   "English": "English",
+  "Default Language": "Default Language",
+  "Used when the user has not selected a language": "Used when the user has not selected a language",
   "Full Name": "Full Name",
   "Email": "Email",
   "Change Password": "Change Password",
@@ -511,6 +514,8 @@
   "Unique name": "Unique name",
   "Select adapter type": "Select adapter type",
   "/ or /drive": "/ or /drive",
+  "Used Capacity": "Used Capacity",
+  "Capacity Usage": "Capacity Usage",
   "Adapter Config": "Adapter Config",
   "adapter.type.local": "Local Filesystem",
   "adapter.type.foxel": "Foxel Node",

web/src/i18n/locales/zh.json

@@ -50,8 +50,13 @@
   "Register failed": "注册失败",
   "Please input email!": "请输入邮箱！",
   "Profile": "个人资料",
+  "Client Authorization": "客户端授权",
   "Account Settings": "账户设置",
   "Language": "语言",
+  "Chinese": "中文",
+  "English": "English",
+  "Default Language": "默认语言",
+  "Used when the user has not selected a language": "用户未手动选择语言时使用",
   "Full Name": "昵称",
   "Email": "邮箱",
   "Change Password": "修改密码",
@@ -508,6 +513,8 @@
   "Unique name": "唯一名称",
   "Select adapter type": "选择适配器类型",
   "/ or /drive": "/或/drive",
+  "Used Capacity": "已使用容量",
+  "Capacity Usage": "容量使用",
   "Adapter Config": "适配器配置",
   "adapter.type.local": "本地文件系统",
   "adapter.type.foxel": "Foxel 节点",

web/src/layout/TopHeader.tsx

@@ -1,6 +1,6 @@
-import { Layout, Button, Dropdown, theme, Flex, Avatar, Typography, Tooltip } from 'antd';
+import { Layout, Button, Dropdown, theme, Flex, Avatar, Typography, Tooltip, Modal, QRCode } from 'antd';
-import { SearchOutlined, MenuUnfoldOutlined, LogoutOutlined, UserOutlined, RobotOutlined, BellOutlined } from '@ant-design/icons';
+import { SearchOutlined, MenuUnfoldOutlined, LogoutOutlined, UserOutlined, RobotOutlined, BellOutlined, QrcodeOutlined } from '@ant-design/icons';
-import { memo, useState } from 'react';
+import { memo, useMemo, useState } from 'react';
 import SearchDialog from './SearchDialog.tsx';
 import { authApi } from '../api/auth.ts';
 import { useNavigate } from 'react-router';
@@ -26,11 +26,16 @@ const TopHeader = memo(function TopHeader({ collapsed, onToggle, onOpenAiAgent,
   const [searchOpen, setSearchOpen] = useState(false);
   const navigate = useNavigate();
   const { t } = useI18n();
-  const { user } = useAuth();
+  const { user, token: authToken } = useAuth();
   const [profileOpen, setProfileOpen] = useState(false);
+  const [clientAuthOpen, setClientAuthOpen] = useState(false);
   const [noticesOpen, setNoticesOpen] = useState(false);
   const status = useSystemStatus();
   const { isMobile } = useResponsive();
+  const clientAuthPayload = useMemo(() => JSON.stringify({
+    base_url: window.location.origin,
+    token: authToken || '',
+  }), [authToken]);
 
   const handleLogout = () => {
     authApi.logout();
@@ -38,6 +43,7 @@ const TopHeader = memo(function TopHeader({ collapsed, onToggle, onOpenAiAgent,
   };
 
   const openProfile = () => setProfileOpen(true);
+  const openClientAuth = () => setClientAuthOpen(true);
 
   return (
     <Header
@@ -96,6 +102,7 @@ const TopHeader = memo(function TopHeader({ collapsed, onToggle, onOpenAiAgent,
           menu={{
             items: [
               { key: 'profile', label: t('Profile'), icon: <UserOutlined />, onClick: openProfile },
+              { key: 'client-auth', label: t('Client Authorization'), icon: <QrcodeOutlined />, onClick: openClientAuth },
               { key: 'logout', label: t('Log Out'), icon: <LogoutOutlined />, onClick: handleLogout },
             ],
           }}
@@ -114,6 +121,18 @@ const TopHeader = memo(function TopHeader({ collapsed, onToggle, onOpenAiAgent,
           </Button>
         </Dropdown>
         <ProfileModal open={profileOpen} onClose={() => setProfileOpen(false)} />
+        <Modal
+          title={t('Client Authorization')}
+          open={clientAuthOpen}
+          onCancel={() => setClientAuthOpen(false)}
+          footer={null}
+          width={320}
+          centered
+        >
+          <Flex justify="center" style={{ padding: '8px 0' }}>
+            <QRCode value={clientAuthPayload} size={220} />
+          </Flex>
+        </Modal>
         <NoticesModal open={noticesOpen} onClose={() => setNoticesOpen(false)} version={status?.version || ''} />
       </Flex>
     </Header>

web/src/pages/AdaptersPage.tsx

@@ -1,12 +1,29 @@
 import { memo, useState, useEffect, useCallback } from 'react';
 import { Table, Button, Space, Drawer, Form, Input, Switch, message, Typography, Popconfirm, Select } from 'antd';
 import PageCard from '../components/PageCard';
-import { adaptersApi, type AdapterItem, type AdapterTypeMeta } from '../api/client';
+import { adaptersApi, type AdapterItem, type AdapterTypeMeta, type AdapterUsage } from '../api/client';
 import { useI18n } from '../i18n';
 
+const formatBytes = (bytes?: number | null) => {
+  if (bytes === null || bytes === undefined) return '-';
+  if (bytes === 0) return '0 B';
+  const units = ['B', 'KB', 'MB', 'GB', 'TB', 'PB'];
+  const index = Math.min(Math.floor(Math.log(bytes) / Math.log(1024)), units.length - 1);
+  const value = bytes / (1024 ** index);
+  return `${value.toFixed(value >= 10 || index === 0 ? 0 : 1)} ${units[index]}`;
+};
+
+const formatUsage = (usage?: AdapterUsage) => {
+  if (!usage?.supported || usage.used_bytes === null || usage.used_bytes === undefined) return '-';
+  const used = formatBytes(usage.used_bytes);
+  if (usage.total_bytes === null || usage.total_bytes === undefined) return used;
+  return `${used} / ${formatBytes(usage.total_bytes)}`;
+};
+
 const AdaptersPage = memo(function AdaptersPage() {
   const [loading, setLoading] = useState(false);
   const [data, setData] = useState<AdapterItem[]>([]);
+  const [usageMap, setUsageMap] = useState<Record<number, AdapterUsage>>({});
   const [open, setOpen] = useState(false);
   const [editing, setEditing] = useState<AdapterItem | null>(null);
   const [form] = Form.useForm();
@@ -16,12 +33,14 @@ const AdaptersPage = memo(function AdaptersPage() {
   const fetchList = useCallback(async () => {
     setLoading(true);
     try {
-      const [list, types] = await Promise.all([
+      const [list, types, usages] = await Promise.all([
         adaptersApi.list(),
-        adaptersApi.available()
+        adaptersApi.available(),
+        adaptersApi.usage()
       ]);
       setData(list);
       setAvailableTypes(types);
+      setUsageMap(Object.fromEntries(usages.map(item => [item.id, item])));
     } catch (e: any) {
       message.error(e.message || t('Load failed'));
     } finally {
@@ -137,11 +156,47 @@ const AdaptersPage = memo(function AdaptersPage() {
     return label === key ? type : label;
   }, [t]);
 
+  const usageSummary = Object.values(usageMap).reduce(
+    (acc, usage) => {
+      if (!usage.supported) return acc;
+      if (usage.used_bytes !== null && usage.used_bytes !== undefined) {
+        acc.used += usage.used_bytes;
+        acc.hasUsed = true;
+      }
+      if (usage.total_bytes !== null && usage.total_bytes !== undefined) {
+        acc.total += usage.total_bytes;
+        acc.hasTotal = true;
+      }
+      return acc;
+    },
+    { used: 0, total: 0, hasUsed: false, hasTotal: false }
+  );
+
+  const pageTitle = (
+    <Space size={12} wrap>
+      <span>{t('Storage Adapters')}</span>
+      {(usageSummary.hasUsed || usageSummary.hasTotal) && (
+        <Typography.Text type="secondary" style={{ fontSize: 13, fontWeight: 400 }}>
+          {usageSummary.hasUsed ? formatBytes(usageSummary.used) : '-'}
+          {' / '}
+          {usageSummary.hasTotal ? formatBytes(usageSummary.total) : '-'}
+        </Typography.Text>
+      )}
+    </Space>
+  );
+
   const columns = [
     { title: t('Name'), dataIndex: 'name' },
     { title: t('Type'), dataIndex: 'type', width: 140, render: (value: string) => renderTypeLabel(value) },
     { title: t('Mount Path'), dataIndex: 'path', width: 140, render: (v: string) => v || '-' },
     { title: t('Sub Path'), dataIndex: 'sub_path', width: 140, render: (v: string) => v || '-' },
+    {
+      title: t('Capacity Usage'),
+      width: 180,
+      render: (_: any, rec: AdapterItem) => {
+        return formatUsage(usageMap[rec.id]);
+      }
+    },
     {
       title: t('Enabled'),
       dataIndex: 'enabled',
@@ -180,6 +235,14 @@ const AdaptersPage = memo(function AdaptersPage() {
       let valuePropName: string | undefined;
       if (field.type === 'password') inputNode = <Input.Password placeholder={field.placeholder} />;
       if (field.type === 'number') inputNode = <Input type="number" placeholder={field.placeholder} />;
+      if (field.type === 'select') {
+        inputNode = (
+          <Select
+            placeholder={field.placeholder}
+            options={(field.options || []).map(option => ({ value: option, label: t(option) }))}
+          />
+        );
+      }
       if (field.type === 'boolean') {
         inputNode = <Switch />;
         valuePropName = 'checked';
@@ -200,7 +263,7 @@ const AdaptersPage = memo(function AdaptersPage() {
 
   return (
     <PageCard
-      title={t('Storage Adapters')}
+      title={pageTitle}
       extra={
         <Space wrap>
           <Button onClick={fetchList} loading={loading}>{t('Refresh')}</Button>

web/src/pages/FileExplorerPage/FileExplorerPage.tsx

@@ -181,7 +181,7 @@ const FileExplorerPage = memo(function FileExplorerPage() {
     setDetailLoading(true);
     try {
       const fullPath = (entryBasePath === '/' ? '' : entryBasePath) + '/' + entry.name;
-      const stat = await vfsApi.stat(fullPath);
+      const stat = await vfsApi.stat(fullPath, { verbose: true });
       setDetailData(stat as Record<string, unknown>);
     } catch (error) {
       const messageText = error instanceof Error ? error.message : String(error);

web/src/pages/FileExplorerPage/components/ContextMenu.tsx

@@ -255,16 +255,20 @@ export const ContextMenu: React.FC<ContextMenuProps> = (props) => {
         height="auto"
         styles={{ body: { padding: 8 } }}
       >
-        <Menu
+        <div onClick={(e) => e.stopPropagation()}>
-          items={items}
+          <Menu
-          selectable={false}
+            items={items}
-          onClick={({ key }) => {
+            mode="inline"
-            const handler = handlerMap.get(String(key));
+            selectable={false}
-            if (handler) handler();
+            onClick={({ key }) => {
-            onClose();
+              const handler = handlerMap.get(String(key));
-          }}
+              if (!handler) return;
-          style={{ borderRadius: token.borderRadius, background: 'transparent', border: 'none' }}
+              handler();
-        />
+              onClose();
+            }}
+            style={{ borderRadius: token.borderRadius, background: 'transparent', border: 'none' }}
+          />
+        </div>
       </Drawer>
     );
   }

web/src/pages/FileExplorerPage/components/Header.tsx

@@ -182,71 +182,77 @@ export const Header: React.FC<HeaderProps> = ({
     },
   };
 
+  if (isMobile) {
+    return (
+      <Flex align="center" gap={6} style={{ padding: '10px 12px', borderBottom: `1px solid ${token.colorBorderSecondary}`, minWidth: 0 }}>
+        <Button size="small" icon={<ArrowUpOutlined />} onClick={onGoUp} disabled={path === '/'} />
+        {renderBreadcrumb()}
+        <Space size={4} style={{ flexShrink: 0 }}>
+          <Button size="small" icon={<ReloadOutlined />} onClick={onRefresh} loading={loading} aria-label={t('Refresh')} />
+          <Button size="small" icon={<PlusOutlined />} onClick={onCreateDir} aria-label={t('New Folder')} />
+          <Button size="small" icon={<UploadOutlined />} onClick={onUploadFile} aria-label={t('Upload Files')} />
+          <Dropdown menu={{ items: mobileMoreItems }}>
+            <Button size="small" icon={<MoreOutlined />} aria-label={t('More')} />
+          </Dropdown>
+        </Space>
+      </Flex>
+    );
+  }
+
   return (
-    <Flex vertical={isMobile} gap={isMobile ? 10 : 12} style={{ padding: isMobile ? '10px 12px' : '10px 16px', borderBottom: `1px solid ${token.colorBorderSecondary}` }}>
+    <Flex vertical gap={12} style={{ padding: '10px 16px', borderBottom: `1px solid ${token.colorBorderSecondary}` }}>
       <Flex align="center" gap={8} style={{ minWidth: 0 }}>
         <Button size="small" icon={<ArrowUpOutlined />} onClick={onGoUp} disabled={path === '/'} />
-        {!isMobile && <Typography.Text strong>{t('File Manager')}</Typography.Text>}
+        <Typography.Text strong>{t('File Manager')}</Typography.Text>
-        {!isMobile && <Divider type="vertical" />}
+        <Divider type="vertical" />
         {renderBreadcrumb()}
       </Flex>
 
       <Flex align="center" justify="space-between" gap={8} style={{ flexWrap: 'wrap' }}>
         <Space size={8} wrap>
           <Button size="small" icon={<ReloadOutlined />} onClick={onRefresh} loading={loading} aria-label={t('Refresh')}>
-            {!isMobile && t('Refresh')}
+            {t('Refresh')}
           </Button>
           <Button size="small" icon={<PlusOutlined />} onClick={onCreateDir} aria-label={t('New Folder')}>
-            {!isMobile && t('New Folder')}
+            {t('New Folder')}
           </Button>
-          {isMobile ? (
+          <Dropdown.Button
-            <Button size="small" icon={<UploadOutlined />} onClick={onUploadFile} aria-label={t('Upload Files')} />
+            size="small"
-          ) : (
+            icon={<UploadOutlined />}
-            <Dropdown.Button
+            onClick={onUploadFile}
-              size="small"
+            menu={uploadMenu}
-              icon={<UploadOutlined />}
+          >
-              onClick={onUploadFile}
+            {t('Upload')}
-              menu={uploadMenu}
+          </Dropdown.Button>
-            >
-              {t('Upload')}
-            </Dropdown.Button>
-          )}
-          {isMobile && (
-            <Dropdown menu={{ items: mobileMoreItems }}>
-              <Button size="small" icon={<MoreOutlined />} aria-label={t('More')} />
-            </Dropdown>
-          )}
         </Space>
 
-        {!isMobile && (
+        <Space size={8} wrap>
-          <Space size={8} wrap>
+          <Select
-            <Select
+            size="small"
-              size="small"
+            value={sortBy}
-              value={sortBy}
+            onChange={(val) => onSortChange(val, sortOrder)}
-              onChange={(val) => onSortChange(val, sortOrder)}
+            style={{ width: 112 }}
-              style={{ width: 112 }}
+            options={[
-              options={[
+              { value: 'name', label: t('Name') },
-                { value: 'name', label: t('Name') },
+              { value: 'size', label: t('Size') },
-                { value: 'size', label: t('Size') },
+              { value: 'mtime', label: t('Modified Time') },
-                { value: 'mtime', label: t('Modified Time') },
+            ]}
-              ]}
+          />
-            />
+          <Button
-            <Button
+            size="small"
-              size="small"
+            icon={sortOrder === 'asc' ? <ArrowUpOutlined /> : <ArrowDownOutlined />}
-              icon={sortOrder === 'asc' ? <ArrowUpOutlined /> : <ArrowDownOutlined />}
+            onClick={() => onSortChange(sortBy, sortOrder === 'asc' ? 'desc' : 'asc')}
-              onClick={() => onSortChange(sortBy, sortOrder === 'asc' ? 'desc' : 'asc')}
+          />
-            />
+          <Segmented
-            <Segmented
+            size="small"
-              size="small"
+            value={viewMode}
-              value={viewMode}
+            onChange={(value) => onSetViewMode(value as ViewMode)}
-              onChange={(value) => onSetViewMode(value as ViewMode)}
+            options={[
-              options={[
+              { label: <Tooltip title={t('Grid')}><AppstoreOutlined /></Tooltip>, value: 'grid' },
-                { label: <Tooltip title={t('Grid')}><AppstoreOutlined /></Tooltip>, value: 'grid' },
+              { label: <Tooltip title={t('List')}><UnorderedListOutlined /></Tooltip>, value: 'list' },
-                { label: <Tooltip title={t('List')}><UnorderedListOutlined /></Tooltip>, value: 'list' },
+            ]}
-              ]}
+          />
-            />
+        </Space>
-          </Space>
-        )}
       </Flex>
     </Flex>
   );

web/src/pages/FileExplorerPage/hooks/useFileActions.tsx

@@ -168,22 +168,19 @@ export function useFileActions({ path, refresh, clearSelection, onShare, onGetDi
     refresh();
   }, [normalizeDestination, normalizeFullPath, t, buildEntryDestination, refresh]);
 
-  const doDownload = useCallback(async (entry: VfsEntry) => {
+  const doDownload = useCallback((entry: VfsEntry) => {
     if (entry.is_dir) {
       message.warning(t('Downloading folders is not supported'));
       return;
     }
     try {
-      const buf = await vfsApi.readFile((path === '/' ? '' : path) + '/' + entry.name);
+      const url = vfsApi.streamUrl((path === '/' ? '' : path) + '/' + entry.name);
-      const blob = new Blob([buf]);
-      const url = URL.createObjectURL(blob);
       const a = document.createElement('a');
       a.href = url;
       a.download = entry.name;
       document.body.appendChild(a);
       a.click();
       document.body.removeChild(a);
-      URL.revokeObjectURL(url);
     } catch (e: any) {
       message.error(e.message || t('Download failed'));
     }

web/src/pages/PluginsPage.tsx

@@ -521,7 +521,7 @@ const PluginsPage = memo(function PluginsPage() {
   };
 
   return (
-    <div style={{ height: 'calc(100vh - 88px)', display: 'flex', flexDirection: 'column', minHeight: 0, overflow: 'hidden' }}>
+    <div style={{ flex: 1, display: 'flex', flexDirection: 'column', minHeight: 0, overflow: 'hidden' }}>
       <div style={{ display: 'flex', alignItems: 'center', gap: 8, marginBottom: 12, flexWrap: 'wrap' }}>
         <Upload
           accept=".foxpkg"

web/src/pages/ProcessorsPage.tsx

@@ -554,9 +554,9 @@ const ProcessorsPage = memo(function ProcessorsPage() {
   return (
     <>
       {contextHolder}
-      <Flex gap={16} style={{ height: 'calc(100vh - 88px)' }}>
+      <Flex gap={16} style={{ flex: 1, minHeight: 0, overflow: 'hidden' }}>
         <Card
-          style={{ flex: '0 0 320px', minWidth: 280, display: 'flex', flexDirection: 'column' }}
+          style={{ flex: '0 0 320px', minWidth: 280, minHeight: 0, display: 'flex', flexDirection: 'column' }}
           title={t('Processor List')}
           extra={
             <Space size={8}>
@@ -564,13 +564,13 @@ const ProcessorsPage = memo(function ProcessorsPage() {
               <Button size="small" onClick={handleReloadProcessors} loading={reloading}>{t('Reload')}</Button>
             </Space>
           }
-          styles={{ body: { padding: 0, flex: 1, display: 'flex' } }}
+          styles={{ body: { padding: 0, flex: 1, minHeight: 0, display: 'flex' } }}
         >
           {renderProcessorList()}
         </Card>
 
         <Card
-          style={{ flex: 1, minWidth: 0, display: 'flex', flexDirection: 'column' }}
+          style={{ flex: 1, minWidth: 0, minHeight: 0, display: 'flex', flexDirection: 'column' }}
           title={selectedProcessorMeta ? `${selectedProcessorMeta.name} (${selectedProcessorMeta.type})` : t('Select a processor')}
           extra={
             <Space size={8}>
@@ -582,7 +582,7 @@ const ProcessorsPage = memo(function ProcessorsPage() {
               </Button>
             </Space>
           }
-          styles={{ body: { padding: 0, flex: 1, display: 'flex', flexDirection: 'column' } }}
+          styles={{ body: { padding: 0, flex: 1, minHeight: 0, display: 'flex', flexDirection: 'column' } }}
         >
           <Tabs
             activeKey={activeTab}

web/src/pages/SystemSettingsPage/SystemSettingsPage.tsx

@@ -66,7 +66,7 @@ export default function SystemSettingsPage({ tabKey, onTabNavigate }: SystemSett
       });
   }, [t]);
 
-  const handleSave = async (values: Record<string, unknown>) => {
+  const handleSave = async (values: Record<string, unknown>): Promise<boolean> => {
     setLoading(true);
     try {
       for (const [key, value] of Object.entries(values)) {
@@ -81,10 +81,13 @@ export default function SystemSettingsPage({ tabKey, onTabNavigate }: SystemSett
       if (Object.keys(values).some(k => Object.values(THEME_KEYS).includes(k))) {
         await refreshTheme();
       }
+      return true;
     } catch (e: any) {
       message.error(e.message || t('Save failed'));
+      return false;
+    } finally {
+      setLoading(false);
     }
-    setLoading(false);
   };
 
   // 离开“外观设置”时，恢复后端持久化配置（取消未保存的预览）

web/src/pages/SystemSettingsPage/components/AppSettingsTab.tsx

@@ -2,6 +2,7 @@ import { Alert, Button, Divider, Form, Input, Select, Switch, message } from 'an
 import { useEffect, useMemo, useState } from 'react';
 import { rolesApi, type RoleInfo } from '../../../api/roles';
 import { useI18n } from '../../../i18n';
+import { normalizeLang, readStoredLang } from '../../../i18n/lang';
 
 interface AppConfigKey {
   key: string;
@@ -12,7 +13,7 @@ interface AppConfigKey {
 interface AppSettingsTabProps {
   config: Record<string, string>;
   loading: boolean;
-  onSave: (values: Record<string, unknown>) => Promise<void>;
+  onSave: (values: Record<string, unknown>) => Promise<boolean>;
   configKeys: AppConfigKey[];
 }
 
@@ -22,7 +23,7 @@ export default function AppSettingsTab({
   onSave,
   configKeys,
 }: AppSettingsTabProps) {
-  const { t } = useI18n();
+  const { t, setLang } = useI18n();
   const [rolesLoading, setRolesLoading] = useState(false);
   const [roles, setRoles] = useState<RoleInfo[]>([]);
 
@@ -52,6 +53,7 @@ export default function AppSettingsTab({
     const roleId = roleIdRaw ? Number(roleIdRaw) : undefined;
     return {
       ...Object.fromEntries(configKeys.map(({ key, default: def }) => [key, config[key] ?? def ?? ''])),
+      APP_DEFAULT_LANGUAGE: normalizeLang(config.APP_DEFAULT_LANGUAGE, 'zh'),
       AUTH_ALLOW_REGISTER: allowRegister,
       AUTH_DEFAULT_REGISTER_ROLE_ID: Number.isFinite(roleId) ? roleId : undefined,
     };
@@ -66,12 +68,17 @@ export default function AppSettingsTab({
         for (const { key } of configKeys) {
           payload[key] = vals[key];
         }
+        const defaultLanguage = normalizeLang(vals.APP_DEFAULT_LANGUAGE, 'zh');
+        payload.APP_DEFAULT_LANGUAGE = defaultLanguage;
         const allow = !!vals.AUTH_ALLOW_REGISTER;
         payload.AUTH_ALLOW_REGISTER = allow ? 'true' : 'false';
         if (allow) {
           payload.AUTH_DEFAULT_REGISTER_ROLE_ID = String(vals.AUTH_DEFAULT_REGISTER_ROLE_ID);
         }
-        await onSave(payload);
+        const saved = await onSave(payload);
+        if (saved && !readStoredLang()) {
+          setLang(defaultLanguage, { persist: false });
+        }
       }}
       style={{ marginTop: 24 }}
       key={JSON.stringify(config)}
@@ -82,6 +89,20 @@ export default function AppSettingsTab({
         </Form.Item>
       ))}
 
+      <Form.Item
+        name="APP_DEFAULT_LANGUAGE"
+        label={t('Default Language')}
+        extra={t('Used when the user has not selected a language')}
+      >
+        <Select
+          size="large"
+          options={[
+            { value: 'zh', label: t('Chinese') },
+            { value: 'en', label: t('English') },
+          ]}
+        />
+      </Form.Item>
+
       <Divider titlePlacement="left">{t('Registration Settings')}</Divider>
 
       <Alert

web/src/pages/SystemSettingsPage/components/AppearanceSettingsTab.tsx

@@ -13,7 +13,7 @@ interface ThemeKeyMap {
 interface AppearanceSettingsTabProps {
   config: Record<string, string>;
   loading: boolean;
-  onSave: (values: Record<string, unknown>) => Promise<void>;
+  onSave: (values: Record<string, unknown>) => Promise<boolean>;
   themeKeys: ThemeKeyMap;
 }
 

web/src/pages/SystemSettingsPage/components/EmailSettingsTab.tsx

@@ -28,7 +28,7 @@ import {
 interface EmailSettingsTabProps {
   config: Record<string, string>;
   loading: boolean;
-  onSave: (values: Record<string, unknown>) => Promise<void>;
+  onSave: (values: Record<string, unknown>) => Promise<boolean>;
 }
 
 interface EmailFormValues {

web/src/pages/SystemSettingsPage/components/ProtocolMappingsTab.tsx

@@ -5,7 +5,7 @@ import { useI18n } from '../../../i18n';
 interface ProtocolMappingsTabProps {
   config: Record<string, string>;
   loading: boolean;
-  onSave: (values: Record<string, unknown>) => Promise<void>;
+  onSave: (values: Record<string, unknown>) => Promise<boolean>;
 }
 
 const WEBDAV_KEY = 'WEBDAV_MAPPING_ENABLED';

web/src/plugin-frame.ts

@@ -7,12 +7,14 @@ import type { PluginItem } from './api/plugins';
 import { pluginsApi } from './api/plugins';
 import request from './api/client';
 import { vfsApi, type VfsEntry } from './api/vfs';
+import { parseLang } from './i18n/lang';
 
 type FrameMode = 'file' | 'app';
 
 type FrameQuery = {
   pluginKey: string;
   mode: FrameMode;
+  lang: string;
   filePath: string;
   pluginVersion: string;
   pluginStyles: string[] | null;
@@ -65,6 +67,7 @@ function getQuery(): FrameQuery {
   const params = new URLSearchParams(window.location.search);
   const pluginKey = (params.get('pluginKey') || '').trim();
   const mode = (params.get('mode') || 'file') as FrameMode;
+  const lang = (params.get('lang') || '').trim();
   const filePath = (params.get('filePath') || '').trim();
   const pluginVersion = (params.get('pluginVersion') || '').trim();
 
@@ -88,7 +91,7 @@ function getQuery(): FrameQuery {
       }
       : null;
 
-  return { pluginKey, mode, filePath, pluginVersion, pluginStyles, entry };
+  return { pluginKey, mode, lang, filePath, pluginVersion, pluginStyles, entry };
 }
 
 function postToParent(data: any) {
@@ -279,9 +282,14 @@ async function buildFileContext(filePath: string, entryOverride: VfsEntry | null
 }
 
 async function main() {
+  const query = getQuery();
+  const frameLang = parseLang(query.lang);
+  if (frameLang) {
+    document.documentElement.lang = frameLang;
+  }
   initExternals();
 
-  const { pluginKey, mode, filePath, pluginVersion, pluginStyles, entry } = getQuery();
+  const { pluginKey, mode, filePath, pluginVersion, pluginStyles, entry } = query;
   if (!pluginKey) {
     renderStatus('Missing pluginKey in query string', true);
     return;

web/src/plugins/externals.ts

@@ -21,8 +21,7 @@ import { pluginsApi } from '../api/plugins';
 // 类型定义
 import type { VfsEntry, DirListing } from '../api/client';
 import type { PluginItem } from '../api/plugins';
-
+import { getActiveLang, normalizeLang, type Lang } from '../i18n/lang';
-type Lang = 'zh' | 'en';
 type Dict = Record<string, string>;
 type Dicts = Partial<Record<Lang, Dict>>;
 
@@ -197,10 +196,8 @@ declare global {
  * 初始化并暴露外部依赖
  */
 export function initExternals(): void {
-  const normalizeLang = (raw: unknown): Lang => (raw === 'en' ? 'en' : 'zh');
-
   const i18nApi = {
-    getLang: () => normalizeLang(localStorage.getItem('lang')),
+    getLang: () => getActiveLang(),
     subscribe: (cb: (lang: Lang) => void) => {
       const handler = (e: Event) => {
         const lang = (e as CustomEvent)?.detail?.lang as Lang;

web/src/router/LayoutShell.tsx

@@ -51,7 +51,7 @@ const ShellBody = memo(function ShellBody() {
   };
 
   return (
-    <Layout style={{ minHeight: '100dvh', background: 'var(--ant-color-bg-layout)' }}>
+    <Layout style={{ height: '100dvh', overflow: 'hidden', background: 'var(--ant-color-bg-layout)' }}>
       {!isMobile && (
         <SideNav
           collapsed={collapsed}
@@ -85,7 +85,7 @@ const ShellBody = memo(function ShellBody() {
         />
       )}
 
-      <Layout style={{ background: 'var(--ant-color-bg-layout)', minWidth: 0 }}>
+      <Layout style={{ background: 'var(--ant-color-bg-layout)', minWidth: 0, minHeight: 0, overflow: 'hidden' }}>
         <TopHeader
           collapsed={collapsed}
           onToggle={handleToggleNav}
@@ -94,15 +94,17 @@ const ShellBody = memo(function ShellBody() {
         />
         <Layout.Content
           style={{
+            flex: 1,
             padding: isMobile ? 12 : 16,
             background: 'var(--ant-color-bg-layout)',
             display: 'flex',
             flexDirection: 'column',
             minHeight: 0,
+            overflow: 'hidden',
           }}
         >
-          <div style={{ flex: 1, minHeight: 0, background: 'var(--ant-color-bg-layout)' }}>
+          <div style={{ flex: 1, minHeight: 0, background: 'var(--ant-color-bg-layout)', overflow: 'hidden' }}>
-            <Flex vertical gap={16} style={{ minHeight: '100%', height: '100%' }}>
+            <Flex vertical style={{ minHeight: 0, height: '100%' }}>
               {navKey === 'adapters' && <AdaptersPage />}
               {navKey === 'files' && <FileExplorerPage />}
               {navKey === 'share' && <SharePage />}