chore: 优化 AI-Core 启动脚本

- 更新 start.bat 和 start.sh 启动脚本
- 优化 gRPC 服务器配置

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

ai-core/start.bat

@@ -1,13 +1,36 @@
 @echo off
+chcp 65001 >nul
+echo Starting AI-Core Document Parser gRPC Server...
+
+set PORT=50051
+
+echo Checking and cleaning up port %PORT%...
+for /f "tokens=5" %%a in ('netstat -ano ^| findstr :%PORT% ^| findstr LISTENING') do (
+    echo Killing process %%a on port %PORT%...
+    taskkill /F /PID %%a 2>nul
+)
+timeout /t 2 /nobreak >nul
+
 cd /d %~dp0
-echo Starting AI-Core Service...
-echo.
 
-REM 激活虚拟环境
-call venv\Scripts\activate.bat
+echo Using virtual environment Python...
+if exist "venv\Scripts\python.exe" (
+    set PYTHON_CMD=%~dp0venv\Scripts\python.exe
+) else (
+    set PYTHON_CMD=py
+)
 
-REM 启动服务
-python main.py %*
+echo Using Python: %PYTHON_CMD%
+%PYTHON_CMD% --version
 
-REM 如果按任意键退出
-pause
+echo Checking port %PORT%...
+%PYTHON_CMD% -c "import socket; s=socket.socket(); s.settimeout(1); r=s.connect_ex(('127.0.0.1',%PORT%)); s.close(); exit(0 if r!=0 else 1)" 2>nul
+if %ERRORLEVEL% NEQ 0 (
+    echo Port %PORT% is free, starting server...
+) else (
+    echo Port %PORT% is still in use, please check manually
+    exit /b 1
+)
+
+echo Starting server on port %PORT%...
+%PYTHON_CMD% main.py --port %PORT% --max-workers 10 --log-level INFO