Update backend/main.py

backend/main.py

@@ -20,6 +20,18 @@ app.add_middleware(
     allow_methods=["*"],
     allow_headers=["*"],
 )
+# ── Static files + SPA ───────────────────────────────────────────────────────
+from fastapi.staticfiles import StaticFiles
+from fastapi.responses import FileResponse
+import pathlib
+
+_static_dir = pathlib.Path(__file__).parent / "static"
+if _static_dir.exists():
+    app.mount("/assets", StaticFiles(directory=str(_static_dir / "assets")), name="assets")
+
+    @app.get("/")
+    async def serve_index():
+        return FileResponse(str(_static_dir / "index.html"))
 
 # ── Config ────────────────────────────────────────────────────────────────────
 GROQ_MODEL   = "llama-3.3-70b-versatile"