Update app.py

app.py

@@ -214,11 +214,17 @@ async def root():
 
 @app.get("/health")
 async def health():
-    return {
-        "status": "ok",
-        "embed_status":  models["embed_status"],
-        "rerank_status": models["rerank_status"],
-    }
+    embed_ok  = models["embed_status"]  == "ready"
+    rerank_ok = models["rerank_status"] == "ready"
+    all_ok = embed_ok and rerank_ok
+    return JSONResponse(
+        status_code=200 if all_ok else 503,
+        content={
+            "status":        "ok" if all_ok else "degraded",
+            "embed_status":  models["embed_status"],
+            "rerank_status": models["rerank_status"],
+        }
+    )
 
 
 @app.get("/v1/models", dependencies=[Depends(verify_api_key)])