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.ps1

@@ -0,0 +1,35 @@
+# AI-Core gRPC Server Startup Script
+
+Write-Host "Starting AI-Core Document Parser gRPC Server..." -ForegroundColor Green
+
+# Check if Python is installed
+if (-not (Get-Command python -ErrorAction SilentlyContinue)) {
+    Write-Host "Error: Python is not installed or not in PATH" -ForegroundColor Red
+    exit 1
+}
+
+# Check if requirements are installed
+$requirementsInstalled = python -c "import grpcio" 2>$null
+if (-not $?) {
+    Write-Host "Installing Python dependencies..." -ForegroundColor Yellow
+    pip install -r requirements.txt
+    if ($LASTEXITCODE -ne 0) {
+        Write-Host "Error: Failed to install dependencies" -ForegroundColor Red
+        exit 1
+    }
+}
+
+# Generate gRPC code if needed
+$pb2File = "proto\document_parser_pb2.py"
+if (-not (Test-Path $pb2File)) {
+    Write-Host "Generating gRPC code..." -ForegroundColor Yellow
+    python generate_grpc.py
+    if ($LASTEXITCODE -ne 0) {
+        Write-Host "Error: Failed to generate gRPC code" -ForegroundColor Red
+        exit 1
+    }
+}
+
+# Start the server
+Write-Host "Starting server on port 50051..." -ForegroundColor Green
+python main.py --port 50051 --max-workers 10 --log-level INFO