Polish inspector mobile layout

docs/CODEX_EXECUTION_LOG.md

@@ -2850,3 +2850,28 @@ Limitations:
 
 Next recommended pass:
 - Continue with right-side inspector mobile polish, especially long dataset/vector/raster metadata and action groups.
+
+## Sprint 77 Inspector mobile visual polish (2026-06-20)
+
+Changed:
+- Added compact inspector action button grids and mobile-safe wrapping for long inspector values.
+- Added scroll/wrap containment for dataset detail text, job JSON and loaded feature metadata.
+- Added `dataset-tool-panel` and `dataset-tool-group` classes to raster/vector operation controls.
+- Added CSS containment for raster/vector tool labels, inputs, selects and buttons inside the inspector.
+- Added `backend/tests/test_sprint77_inspector_mobile_polish.py`.
+- Updated `frontend/README.md`, `docs/TODO.md` and `CHANGELOG.md`.
+
+Tested:
+- Red step: `python -m pytest backend/tests/test_sprint77_inspector_mobile_polish.py -q` failed on missing inspector mobile CSS and dataset tool markup contracts.
+- `python -m pytest backend/tests/test_sprint77_inspector_mobile_polish.py backend/tests/test_sprint76_export_system_mobile_polish.py backend/tests/test_sprint75_ai_labs_mobile_polish.py backend/tests/test_sprint72_mobile_overflow_hardening.py backend/tests/test_sprint52_workbench_inspector_tabs.py backend/tests/test_sprint30_workbench_components.py backend/tests/test_sprint29_dataset_components.py -q` (`18 passed`)
+- `cd frontend && npm run typecheck`
+- `cd frontend && npm run build`
+
+Open:
+- Run full readiness, redeploy Tower and verify live runtime smoke after deployment.
+
+Limitations:
+- Frontend presentation polish only; no dataset workflow, raster/vector operation behavior, API, persistence, migration, provider fetching or AI/model changes.
+
+Next recommended pass:
+- Continue with report/export preview readability polish, especially large JSON/HTML handoff artifacts.