feat(arch): 补充基础设施模块 (env_setup.sh)，完成 Agent 安装流全组件解耦

install/env_setup.sh

@@ -0,0 +1,139 @@
+#!/bin/bash
+# ==========================================================
+# 模块名称: env_setup.sh
+# 核心功能: 靶机架构预检、云端版本解析、多分支包管理器依赖补全
+# ==========================================================
+
+is_systemd() {
+    command -v systemctl >/dev/null 2>&1 || return 1
+    [ -d /run/systemd/system ] || return 1
+    return 0
+}
+
+get_os_info() {
+    if [ -f /etc/os-release ]; then
+        . /etc/os-release
+        echo "$PRETTY_NAME"
+    else
+        uname -srm
+    fi
+}
+
+get_virt_info() {
+    if grep -qaE 'docker|containerd|podman' /proc/1/cgroup 2>/dev/null || [ -f /.dockerenv ]; then
+        echo "Docker/OCI Container"
+    elif grep -qa container=lxc /proc/1/environ 2>/dev/null || [ -d /proc/vz ]; then
+        echo "LXC/OpenVZ"
+    elif command -v systemd-detect-virt >/dev/null 2>&1; then
+        systemd-detect-virt
+    else
+        echo "Unknown/Bare Metal"
+    fi
+}
+
+version_lt() {
+    test "$(printf '%s\n' "$1" "$2" | sort -V | head -n 1)" = "$1" && test "$1" != "$2"
+}
+
+# ----------------------------------------------------------
+# [时序 1] 预检系统环境，输出雷达面板
+# ----------------------------------------------------------
+do_env_precheck() {
+    echo -e "\n======================================"
+    echo -e "📊 \033[36mIP-Sentinel 靶机环境侦测预检\033[0m"
+    echo -e "--------------------------------------"
+    echo -e "OS 架构   : $(get_os_info)"
+    echo -e "虚拟化    : $(get_virt_info)"
+    if is_systemd; then
+        echo -e "Init 系统 : systemd ✅"
+    else
+        echo -e "Init 系统 : 非 systemd ⚠️ (将自动降维至守护循环)"
+    fi
+    echo -e "======================================\n"
+    sleep 1
+    
+    INSTALL_DIR="/opt/ip_sentinel"
+    CONFIG_FILE="${INSTALL_DIR}/config.conf"
+}
+
+# ----------------------------------------------------------
+# [时序 2] 解析远端版本锚点
+# ----------------------------------------------------------
+do_fetch_version() {
+    # 动态抓取，若失败则提供硬编码保底
+    TARGET_VERSION=$( (curl -fsSL --connect-timeout 5 --retry 2 "${REPO_RAW_URL}/version.txt" || curl -4 -fsSL --connect-timeout 5 --retry 2 "${REPO_RAW_URL}/version.txt") 2>/dev/null | grep "^AGENT_VERSION=" | cut -d'=' -f2 | tr -d '[:space:]')
+    TARGET_VERSION=${TARGET_VERSION:-"4.2.3"}
+}
+
+# ----------------------------------------------------------
+# [时序 3] 唤醒包管理器，补全战地依赖
+# ----------------------------------------------------------
+do_install_deps() {
+    echo -e "\n[1/7] 正在探测并安装基础环境依赖 (curl, jq, cron, procps, python3)..."
+    REQUIRED_CMDS=("curl" "jq" "crontab" "pgrep" "python3" "openssl")
+    MISSING_CMDS=()
+
+    for cmd in "${REQUIRED_CMDS[@]}"; do
+        if ! command -v "$cmd" >/dev/null 2>&1; then
+            MISSING_CMDS+=("$cmd")
+        fi
+    done
+
+    if [ ${#MISSING_CMDS[@]} -gt 0 ]; then
+        echo "⏳ 发现缺失依赖: ${MISSING_CMDS[*]}，正在尝试自动补齐..."
+        
+        if command -v apt-get >/dev/null 2>&1; then
+            apt-get update -y >/dev/null 2>&1
+            apt-get install -y --no-install-recommends curl jq cron procps python3 openssl >/dev/null 2>&1
+            systemctl enable cron >/dev/null 2>&1 && systemctl start cron >/dev/null 2>&1
+            
+        elif command -v yum >/dev/null 2>&1 || command -v dnf >/dev/null 2>&1 || command -v microdnf >/dev/null 2>&1; then
+            PKG_MGR="yum"
+            OPT_ARGS=""
+            if command -v dnf >/dev/null 2>&1; then
+                PKG_MGR="dnf"
+                OPT_ARGS="--setopt=install_weak_deps=False"
+            elif command -v microdnf >/dev/null 2>&1; then
+                PKG_MGR="microdnf"
+            fi
+            
+            echo -e "\033[90m   (正在安装 epel-release 扩展源，请稍候...)\033[0m"
+            $PKG_MGR install -y epel-release >/dev/null 2>&1 || true
+            
+            echo -e "\033[90m   (正在拉取核心组件...)\033[0m"
+            $PKG_MGR install -y $OPT_ARGS curl jq cronie procps-ng python3 openssl
+            systemctl enable crond >/dev/null 2>&1 && systemctl start crond >/dev/null 2>&1
+            
+        elif command -v apk >/dev/null 2>&1; then
+            echo "Alpine 探测到系统类型为 Alpine Linux，正在执行轻量级安装..."
+            apk add --no-cache curl jq cronie procps python3 bash openssl || apk add --no-cache curl jq procps python3 bash openssl
+            mkdir -p /var/spool/cron/crontabs
+            rc-update add crond default >/dev/null 2>&1
+            service crond start >/dev/null 2>&1
+            
+        elif command -v pacman >/dev/null 2>&1; then
+            pacman -S --needed --noconfirm curl jq cronie procps-ng python openssl >/dev/null 2>&1
+            mkdir -p /root/.cache/crontab 2>/dev/null
+            systemctl enable cronie >/dev/null 2>&1 && systemctl start cronie >/dev/null 2>&1
+            
+        else
+            echo -e "\033[31m❌ 自动安装失败：系统未知的包管理器。\033[0m"
+            echo -e "\033[33m⚠️ 请根据您的操作系统，手动执行以下安装命令后重新运行本脚本：\033[0m"
+            echo -e "  Debian/Ubuntu: \033[36mapt-get update && apt-get install -y --no-install-recommends curl jq cron procps python3 openssl\033[0m"
+            echo -e "  CentOS/RHEL:   \033[36myum install -y curl jq cronie procps-ng python3 openssl\033[0m"
+            echo -e "  Alpine Linux:  \033[36mapk add --no-cache curl jq cronie procps python3 bash openssl\033[0m"
+            echo -e "  Arch Linux:    \033[36mpacman -Syu --needed curl jq cronie procps-ng python openssl\033[0m"
+            exit 1
+        fi
+        
+        for cmd in "${REQUIRED_CMDS[@]}"; do
+            if ! command -v "$cmd" >/dev/null 2>&1; then
+                echo -e "\033[31m❌ 致命错误：核心命令 '$cmd' 仍未找到！\033[0m"
+                echo -e "这通常是因为您的系统源配置错误或缺失基础组件库导致。"
+                echo -e "请手动修复您的包管理器源，或联系 VPS 供应商重新格式化系统。"
+                exit 1
+            fi
+        done
+    fi
+    echo -e "\033[32m✅ 基础环境检测通过。\033[0m"
+}