Extract detection and segmentation workflow hooks

docs/CODEX_EXECUTION_LOG.md

@@ -1,3 +1,23 @@
+## Sprint 26 frontend workflow hook hardening (2026-06-17)
+
+Changed:
+- Moved Detection Lab orchestration state and API calls from `frontend/src/App.tsx` into `frontend/src/hooks/useDetectionWorkflow.ts`.
+- Moved Segmentation Lab orchestration state and API calls from `frontend/src/App.tsx` into `frontend/src/hooks/useSegmentationWorkflow.ts`.
+- Added shared frontend `formatError` helper under `frontend/src/lib/formatError.ts`.
+- Added regression tests to verify App uses workflow hooks and still wires DetectionLab/SegmentationLab callbacks.
+- Updated frontend README, TODO and changelog docs.
+
+Validation:
+- `python -m pytest backend/tests/test_sprint26_frontend_workflow_hooks.py backend/tests/test_sprint22_workbench_status_strip.py` passed: 6 tests.
+- `cd frontend && npm run typecheck` passed.
+- `cd frontend && npm run build` passed.
+- `bash scripts/run_readiness_check.sh` passed: 160 backend tests, frontend typecheck/build, Alembic head check and script syntax checks.
+- `python -m compileall backend/app` passed.
+- `cd backend && python -m alembic upgrade head --sql` passed.
+- `bash -n scripts/live_migration_smoke.sh` passed.
+
+Notes:
+- No API contracts, backend behavior, migrations, product features, provider fetching, AI behavior or UI redesign changed.
 ## Sprint 25 YOLO compatibility smoke hardening (2026-06-17)
 
 Changed:

docs/TODO.md

@@ -36,7 +36,8 @@ This file now starts with the current implementation status. Older preparation/b
 - [x] Dry-run-first demo export artifact cleanup tooling.
 - [x] Live Docker/PostGIS validation on Tower/Unraid.
 - [x] Real YOLO compatibility smoke with optional AI extras and local model file.
-- [ ] Further frontend state/module decomposition beyond Sprint 10 extraction.
+- [x] Detection and segmentation workflow hook extraction beyond Sprint 10.
+- [ ] Further frontend state/module decomposition for datasets, exports and QA/QC.
 
 ## Sprint 8 status