Extract demo workflow hook

backend/tests/test_sprint39_frontend_orchestration_hooks.py

@@ -10,20 +10,37 @@ def test_app_uses_shared_orchestration_hooks() -> None:
     app = (ROOT / "frontend" / "src" / "App.tsx").read_text(encoding="utf-8")
 
     assert "useProjectWorkspace" in app
+    assert "useDemoWorkflow" in app
     assert "useProviderCapabilities" in app
     assert "useChangeDetectionWorkflow" in app
     assert "useMapWorkspaceState" in app
     assert "from './hooks/useProjectWorkspace'" in app
+    assert "from './hooks/useDemoWorkflow'" in app
     assert "from './hooks/useProviderCapabilities'" in app
     assert "from './hooks/useChangeDetectionWorkflow'" in app
     assert "from './hooks/useMapWorkspaceState'" in app
     assert "projectsApi" not in app
     assert "areasApi" not in app
     assert "datasetsApi" not in app
+    assert "demoApi" not in app
     assert "analysisApi" not in app
     assert "externalApi" not in app
 
 
+def test_demo_workflow_hook_owns_demo_api_and_cross_module_selection() -> None:
+    hook = (ROOT / "frontend" / "src" / "hooks" / "useDemoWorkflow.ts").read_text(encoding="utf-8")
+
+    assert "demoApi.seedWorkflow" in hook
+    assert "loadDemoWorkflow" in hook
+    assert "setSelectedProjectId(result.project_id)" in hook
+    assert "setSelectedDatasetId(result.candidate_dataset_id)" in hook
+    assert "setSelectedMapAreaId(result.area_id)" in hook
+    assert "setQaCandidateDatasetId(result.candidate_dataset_id)" in hook
+    assert "setDetectionReferenceDatasetId(result.reference_dataset_id)" in hook
+    assert "setSegmentationReferenceDatasetId(result.reference_dataset_id)" in hook
+    assert "loadDatasetDetails(result.project_id, candidateDataset)" in hook
+
+
 def test_project_workspace_hook_owns_project_area_dataset_loading() -> None:
     hook = (ROOT / "frontend" / "src" / "hooks" / "useProjectWorkspace.ts").read_text(encoding="utf-8")