feat: add versioned backend scoring workflow

backend/wisegrade/main.py

@@ -0,0 +1,31 @@
+import logging
+from contextlib import asynccontextmanager
+
+from fastapi import FastAPI, Request
+from fastapi.responses import JSONResponse
+
+from .api import router
+from .db import SessionLocal
+from .seed import seed_initial
+
+
+logging.basicConfig(level=logging.INFO, format="%(asctime)s %(levelname)s %(name)s %(message)s")
+@asynccontextmanager
+async def lifespan(_app: FastAPI):
+    with SessionLocal() as db:
+        seed_initial(db)
+    yield
+
+
+app = FastAPI(title="WiseGrade 智评", version="0.1.0", lifespan=lifespan)
+app.include_router(router)
+
+
+@app.exception_handler(ValueError)
+async def value_error_handler(_request: Request, exc: ValueError):
+    return JSONResponse(status_code=400, content={"detail": str(exc)})
+
+
+@app.get("/api/health")
+def health():
+    return {"status": "ok"}