refactor: 重构 algorithm 为 ai-core 代码解析服务

- 新增 ai-core 目录，包含代码解析核心服务
- 添加 proto 定义、parser、service 模块
- 添加启动脚本和依赖配置

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

ai-core/start.sh

@@ -0,0 +1,86 @@
+#!/bin/bash
+
+# AI-Core gRPC Server Startup Script
+
+echo "Starting AI-Core Document Parser gRPC Server..."
+
+# 配置
+PORT=${1:-50051}
+
+# 使用虚拟环境
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+cd "$SCRIPT_DIR"
+
+# Windows 下使用 PowerShell 的 py 命令或者直接用 venv
+if [[ "$OSTYPE" == "msys" || "$OSTYPE" == "win32" || -f "venv/Scripts/python.exe" ]]; then
+    if [ -f "venv/Scripts/python.exe" ]; then
+        echo "Using virtual environment Python..."
+        PYTHON_CMD="$SCRIPT_DIR/venv/Scripts/python.exe"
+    elif command -v py &> /dev/null; then
+        echo "Using py launcher..."
+        PYTHON_CMD="py"
+    else
+        echo "Error: Python not found"
+        exit 1
+    fi
+else
+    # Linux/Mac
+    if [ -d "venv" ]; then
+        echo "Activating virtual environment..."
+        source venv/bin/activate
+        PYTHON_CMD="python"
+    else
+        PYTHON_CMD="python3"
+    fi
+fi
+
+echo "Using Python: $PYTHON_CMD"
+$PYTHON_CMD --version
+
+# Check if requirements are installed
+$PYTHON_CMD -c "import grpcio" 2>/dev/null
+if [ $? -ne 0 ]; then
+    echo "Installing Python dependencies..."
+    $PYTHON_CMD -m pip install -r requirements.txt
+    if [ $? -ne 0 ]; then
+        echo "Error: Failed to install dependencies"
+        exit 1
+    fi
+fi
+
+# Generate gRPC code if needed
+if [ ! -f "proto/document_parser_pb2.py" ]; then
+    echo "Generating gRPC code..."
+    $PYTHON_CMD generate_grpc.py
+    if [ $? -ne 0 ]; then
+        echo "Error: Failed to generate gRPC code"
+        exit 1
+    fi
+fi
+
+# 检查端口占用并释放
+echo "Checking port $PORT..."
+if [[ "$OSTYPE" == "msys" || "$OSTYPE" == "win32" ]]; then
+    # Windows
+    NETSTAT_OUTPUT=$(netstat -ano 2>/dev/null | grep ":$PORT" | grep LISTENING)
+    if [ -n "$NETSTAT_OUTPUT" ]; then
+        echo "Port $PORT is in use, killing process..."
+        PID=$(echo "$NETSTAT_OUTPUT" | awk '{print $NF}' | head -1)
+        if [ -n "$PID" ]; then
+            taskkill //F //PID $PID 2>/dev/null
+            sleep 1
+        fi
+    fi
+else
+    # Linux/Mac
+    PID=$(lsof -ti:$PORT 2>/dev/null)
+    if [ -n "$PID" ]; then
+        echo "Port $PORT is in use, killing process $PID..."
+        kill $PID 2>/dev/null
+        sleep 1
+    fi
+fi
+
+# Start the server
+echo "Starting server on port $PORT..."
+$PYTHON_CMD main.py --port $PORT --max-workers 10 --log-level INFO