Update app.py

app.py

@@ -99,6 +99,19 @@ app = FastAPI(
     lifespan=lifespan
 )
 
+# ---------- serve the single-page UI at “/” ----------
+BASE_DIR = pathlib.Path(__file__).resolve().parent
+UI_FILE  = BASE_DIR / "browser_automation_ui.html"   # adjust if you stored it elsewhere
+
+@app.get("/", response_class=HTMLResponse)
+async def root_ui():
+    """Return the front-end SPA."""
+    return FileResponse(UI_FILE)
+
+# (Optional) if you later add JS/CSS images, create a /static mount
+# app.mount("/static", StaticFiles(directory=BASE_DIR / "static"), name="static")
+# ------------------------------------------------------
+
 app.add_middleware(
     CORSMiddleware,
     allow_origins=["*"],