Fix app instance and add root landing page

main.py

@@ -7,7 +7,12 @@ import joblib
 from pathlib import Path
 
 
-app = FastAPI()
+app = FastAPI(
+    title="Getaround API",
+    version="1.0.0",
+    docs_url=None,
+    redoc_url=None
+)
 
 @app.get("/", response_class=HTMLResponse)
 def home():
@@ -37,13 +42,6 @@ FEATURE_ORDER = [
     "winter_tires",
 ]
 
-app = FastAPI(
-    title="Getaround API",
-    version="1.0.0",
-    docs_url=None,   # we serve a custom /docs page to match the project requirement
-    redoc_url=None
-)
-
 model = joblib.load(MODEL_PATH)
 
 class PredictIn(BaseModel):
@@ -79,13 +77,9 @@ def predict(payload: PredictIn):
     return {"prediction": [float(p) for p in preds]}
 
 
-from fastapi.responses import HTMLResponse
-from pathlib import Path
-
 BASE_DIR = Path(__file__).resolve().parent
 
 @app.get("/docs", response_class=HTMLResponse)
 def docs():
     html = (BASE_DIR / "docs.html").read_text(encoding="utf-8")
-    return HTMLResponse(content=html)
-
+    return HTMLResponse(content=html)