M0: scaffold — uv project, FastAPI health, pytest

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

backend/tests/test_health.py

@@ -0,0 +1,10 @@
+from fastapi.testclient import TestClient
+
+from tft.api.app import app
+
+
+def test_health():
+    client = TestClient(app)
+    resp = client.get("/health")
+    assert resp.status_code == 200
+    assert resp.json() == {"status": "ok"}