Add project registration policy and template

tests/test_api_storage.py

@@ -150,3 +150,15 @@ def test_project_refresh_endpoint_uses_registered_roots(tmp_data_dir, monkeypatc
     assert response.status_code == 200
     assert calls == [("p05", False)]
     assert response.json()["project"] == "p05-interferometer"
+
+
+def test_projects_template_endpoint_returns_template(tmp_data_dir, monkeypatch):
+    config.settings = config.Settings()
+
+    client = TestClient(app)
+    response = client.get("/projects/template")
+
+    assert response.status_code == 200
+    body = response.json()
+    assert body["allowed_sources"] == ["vault", "drive"]
+    assert body["template"]["projects"][0]["id"] == "p07-example"