feat: 添加PostgreSQL数据库集成和机台管理功能

- 新增PostgreSQL数据库支持，包含内置和外部数据库两种部署模式
- 实现机台管理功能，包括保护状态控制和VHD关键词设置
- 添加用户认证系统，支持会话管理和权限控制
- 更新Docker配置，支持数据库持久化和健康检查
- 扩展API接口，提供完整的RESTful API文档
- 更新客户端代码以支持机台ID和保护检查功能
- 添加数据库初始化脚本和配置指南

VHDSelectServer/setup_database.bat

@@ -0,0 +1,68 @@
+@echo off
+chcp 65001 >nul
+echo.
+echo ========================================
+echo PostgreSQL Database Setup Script
+echo ========================================
+echo.
+
+REM Check if PostgreSQL is installed
+echo Checking PostgreSQL installation...
+psql --version >nul 2>&1
+if %errorlevel% neq 0 (
+    echo ERROR: PostgreSQL is not installed or not in PATH
+    echo.
+    echo Please install PostgreSQL first:
+    echo    1. Download from: https://www.postgresql.org/download/windows/
+    echo    2. Run the installer as administrator
+    echo    3. Set superuser password to: password
+    echo    4. Use default port: 5432
+    echo    5. Add PostgreSQL bin directory to PATH
+    echo.
+    echo After installation, run this script again.
+    pause
+    exit /b 1
+)
+
+echo SUCCESS: PostgreSQL is installed
+echo.
+
+REM Prompt for PostgreSQL superuser password
+echo Please enter PostgreSQL superuser password:
+set /p "PGPASSWORD=Password: "
+echo.
+
+REM Set environment variable for password
+set PGPASSWORD=%PGPASSWORD%
+
+echo Setting up database...
+echo.
+
+REM Execute the SQL setup script
+psql -U postgres -h localhost -f setup_postgresql.sql
+
+if %errorlevel% equ 0 (
+    echo.
+    echo SUCCESS: Database setup completed successfully!
+    echo.
+    echo Database Information:
+    echo    Host: localhost
+    echo    Port: 5432
+    echo    Database: vhd_select
+    echo    User: postgres
+    echo.
+    echo You can now start the VHDSelectServer:
+    echo    node server.js
+    echo.
+) else (
+    echo.
+    echo ERROR: Database setup failed!
+    echo Please check the error messages above and try again.
+    echo.
+)
+
+REM Clear password from environment
+set PGPASSWORD=
+
+echo Press any key to exit...
+pause >nul