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/generate_grpc.py

@@ -0,0 +1,46 @@
+import subprocess
+import sys
+import os
+
+proto_file = "proto/document_parser.proto"
+proto_path = "proto"
+python_out = "proto"
+grpc_python_out = "proto"
+
+def generate_grpc():
+    """Generate gRPC Python code from proto file"""
+    print(f"Generating gRPC code from {proto_file}...")
+    
+    cmd = [
+        sys.executable,
+        "-m",
+        "grpc_tools.protoc",
+        f"--proto_path={proto_path}",
+        f"--python_out={python_out}",
+        f"--grpc_python_out={grpc_python_out}",
+        proto_file,
+    ]
+    
+    try:
+        subprocess.run(cmd, check=True)
+        print("gRPC code generated successfully!")
+        
+        pb2_file = os.path.join(python_out, "document_parser_pb2.py")
+        pb2_grpc_file = os.path.join(python_out, "document_parser_pb2_grpc.py")
+        
+        if os.path.exists(pb2_file) and os.path.exists(pb2_grpc_file):
+            print(f"Generated files:")
+            print(f"  - {pb2_file}")
+            print(f"  - {pb2_grpc_file}")
+        else:
+            print("Warning: Expected files not found")
+            
+    except subprocess.CalledProcessError as e:
+        print(f"Error generating gRPC code: {e}")
+        sys.exit(1)
+    except Exception as e:
+        print(f"Unexpected error: {e}")
+        sys.exit(1)
+
+if __name__ == "__main__":
+    generate_grpc()