Serve Gradio UI from Space root

app.py

@@ -5,7 +5,6 @@ from __future__ import annotations
 import inspect
 
 from fastapi import FastAPI
-from fastapi.responses import RedirectResponse
 
 from gamemaster_copilot.config import MODES, get_settings
 from gamemaster_copilot.schemas import ChatRequest, ChatResponse
@@ -22,11 +21,6 @@ app = FastAPI(
 )
 
 
-@app.get("/", include_in_schema=False)
-def root() -> RedirectResponse:
-    return RedirectResponse(url="/ui")
-
-
 @app.get("/api/health")
 def health() -> dict:
     return service.health()
@@ -152,4 +146,4 @@ demo = _build_gradio_ui()
 if demo is not None:
     import gradio as gr
 
-    app = gr.mount_gradio_app(app, demo, path="/ui")
+    app = gr.mount_gradio_app(app, demo, path="/")

tests/test_api_contract.py

@@ -6,6 +6,15 @@ from fastapi.testclient import TestClient  # noqa: E402
 from app import app  # noqa: E402
 
 
+def test_root_serves_ui_without_redirect() -> None:
+    client = TestClient(app)
+
+    response = client.get("/", follow_redirects=False)
+
+    assert response.status_code == 200
+    assert "text/html" in response.headers["content-type"]
+
+
 def test_api_chat_valid_request() -> None:
     client = TestClient(app)
 
@@ -50,4 +59,3 @@ def test_api_chat_rejects_bad_mode_and_k() -> None:
     )
 
     assert response.status_code == 422
-