feat: 添加后端架构、计算模块及部署文档

backend/app/main.py

@@ -0,0 +1,18 @@
+from fastapi import FastAPI
+
+from app.api.v1.router import api_router
+from app.core.config import get_settings
+from app.core.logging import configure_logging, setup_request_logging
+
+
+def create_app() -> FastAPI:
+    settings = get_settings()
+    configure_logging(settings)
+
+    app = FastAPI(title=settings.app_name)
+    setup_request_logging(app)
+    app.include_router(api_router, prefix=settings.api_prefix)
+    return app
+
+
+app = create_app()