feat: 添加后端架构、计算模块及部署文档

backend/app/api/v1/endpoints/__init__.py

@@ -0,0 +1 @@
+"""API endpoint modules."""

backend/app/api/v1/endpoints/health.py

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+from fastapi import APIRouter
+
+from app.core.logging import get_logger
+
+router = APIRouter()
+logger = get_logger(__name__)
+
+
+@router.get("/health")
+async def health_check() -> dict[str, str]:
+    logger.info("health check requested")
+    return {"status": "ok"}