feat: 添加 Windows 启动脚本

- start_system.bat: CMD 批处理脚本，双击即可运行
- start_system.ps1: PowerShell 脚本，支持进程监控和优雅退出

两个脚本都会：
1. 激活 crypto_pred_312 conda 环境
2. 启动 API 服务 (端口 8000)
3. 启动自动交易程序

start_system.bat

@@ -0,0 +1,47 @@
+@echo off
+chcp 65001 >nul
+REM ============================================
+REM  系统启动脚本 (Windows)
+REM  启动 API 服务和自动交易程序
+REM ============================================
+
+echo [%date% %time%] 正在启动系统...
+
+REM 检查 conda 环境
+where conda >nul 2>&1
+if %errorlevel% neq 0 (
+    echo [错误] 未找到 conda，请先安装 Anaconda 或 Miniconda
+    pause
+    exit /b 1
+)
+
+REM 激活 conda 环境
+echo [%date% %time%] 激活 conda 环境: crypto_pred_312
+call conda activate crypto_pred_312
+if %errorlevel% neq 0 (
+    echo [错误] 无法激活 conda 环境 crypto_pred_312
+    echo 请先创建环境: conda create -n crypto_pred_312 python=3.12
+    pause
+    exit /b 1
+)
+
+REM 启动 API 服务 (后台运行)
+echo [%date% %time%] 启动 API 服务...
+start "API服务" cmd /c "python -m uvicorn api.main:app --host 0.0.0.0 --port 8000"
+
+REM 等待 API 启动
+timeout /t 3 /nobreak >nul
+
+REM 启动自动交易程序 (后台运行)
+echo [%date% %time%] 启动自动交易程序...
+start "自动交易" cmd /c "python -u auto_trade_polymarket.py"
+
+echo.
+echo ============================================
+echo   系统启动完成!
+echo   前端访问: http://localhost:8000
+echo   关闭窗口可停止对应服务
+echo ============================================
+echo.
+
+pause

start_system.ps1

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+# ============================================
+#  系统启动脚本 (Windows PowerShell)
+#  启动 API 服务和自动交易程序
+# ============================================
+
+$ErrorActionPreference = "Stop"
+
+function Write-Log {
+    param([string]$Message, [string]$Color = "White")
+    $timestamp = Get-Date -Format "yyyy-MM-dd HH:mm:ss"
+    Write-Host "[$timestamp] $Message" -ForegroundColor $Color
+}
+
+Write-Log "正在启动系统..." "Yellow"
+
+# 检查 conda
+$condaPath = Get-Command conda -ErrorAction SilentlyContinue
+if (-not $condaPath) {
+    Write-Log "错误: 未找到 conda，请先安装 Anaconda 或 Miniconda" "Red"
+    Read-Host "按回车键退出"
+    exit 1
+}
+
+# 激活 conda 环境
+Write-Log "激活 conda 环境: crypto_pred_312" "Yellow"
+try {
+    conda activate crypto_pred_312
+} catch {
+    Write-Log "错误: 无法激活 conda 环境 crypto_pred_312" "Red"
+    Write-Log "请先创建环境: conda create -n crypto_pred_312 python=3.12" "Yellow"
+    Read-Host "按回车键退出"
+    exit 1
+}
+
+# 启动 API 服务
+Write-Log "启动 API 服务..." "Yellow"
+$apiProcess = Start-Process -FilePath "python" `
+    -ArgumentList "-m uvicorn api.main:app --host 0.0.0.0 --port 8000" `
+    -PassThru -NoNewWindow
+
+Write-Log "API 服务已启动 (PID: $($apiProcess.Id))" "Green"
+
+# 等待 API 启动
+Start-Sleep -Seconds 3
+
+# 启动自动交易程序
+Write-Log "启动自动交易程序..." "Yellow"
+$tradeProcess = Start-Process -FilePath "python" `
+    -ArgumentList "-u auto_trade_polymarket.py" `
+    -PassThru -NoNewWindow
+
+Write-Log "自动交易程序已启动 (PID: $($tradeProcess.Id))" "Green"
+
+Write-Host ""
+Write-Host "============================================" -ForegroundColor Cyan
+Write-Host "  系统启动完成!" -ForegroundColor Green
+Write-Host "  前端访问: http://localhost:8000" -ForegroundColor Green
+Write-Host "  按 Ctrl+C 停止所有服务" -ForegroundColor Yellow
+Write-Host "============================================" -ForegroundColor Cyan
+Write-Host ""
+
+# 等待用户中断
+try {
+    while ($true) {
+        # 检查进程状态
+        if ($apiProcess.HasExited) {
+            Write-Log "API 服务意外退出" "Red"
+            break
+        }
+        if ($tradeProcess.HasExited) {
+            Write-Log "自动交易程序意外退出" "Red"
+            break
+        }
+        Start-Sleep -Seconds 1
+    }
+} finally {
+    Write-Log "正在停止服务..." "Yellow"
+    
+    if (-not $apiProcess.HasExited) {
+        Stop-Process -Id $apiProcess.Id -Force -ErrorAction SilentlyContinue
+        Write-Log "API 服务已停止" "Green"
+    }
+    
+    if (-not $tradeProcess.HasExited) {
+        Stop-Process -Id $tradeProcess.Id -Force -ErrorAction SilentlyContinue
+        Write-Log "自动交易程序已停止" "Green"
+    }
+    
+    Write-Log "所有服务已停止" "Green"
+}