Improve map overlay ergonomics

docs/CODEX_EXECUTION_LOG.md

@@ -2434,3 +2434,29 @@ Limitations:
 
 Next recommended pass:
 - Continue with map/result overlay ergonomics, especially making selected dataset/result provenance easier to see beside the map.
+
+## Sprint 63 Map overlay ergonomics (2026-06-18)
+
+Changed:
+- Added active map layer source/provenance/draw-state context in the Map workspace using existing selected dataset, detection, segmentation and change-detection frontend state.
+- Added a clear map empty-state when no vector/result layer is active.
+- Added selected-feature property chips before the raw JSON feature inspector so common properties are scan-friendly.
+- Tightened panel-title alignment with a scoped CSS override after the broader visual polish exposed a specificity issue in the existing `section > div:not(...)` rule.
+- Added `backend/tests/test_sprint63_map_overlay_ergonomics.py`.
+- Updated `frontend/README.md`, `docs/TODO.md` and `CHANGELOG.md`.
+
+Tested:
+- Red step: `cd backend && python -m pytest tests/test_sprint63_map_overlay_ergonomics.py -q` failed on missing map provenance/feature-summary UI.
+- `cd backend && python -m pytest tests/test_sprint63_map_overlay_ergonomics.py tests/test_sprint30_workbench_components.py tests/test_sprint53_selection_ergonomics.py -q` (`11 passed`)
+- `cd frontend && npm run typecheck`
+- `cd frontend && npm run build`
+- Local Chrome/Playwright check against `http://127.0.0.1:5175` with live API proxy: Map workspace opened, provenance rail present, no console warnings/errors, no horizontal page overflow.
+
+Open:
+- Run full readiness and deploy Tower after this pass.
+
+Limitations:
+- This is a frontend ergonomics pass only. It does not add new map layers, backend endpoints, provider fetching or geospatial processing.
+
+Next recommended pass:
+- Continue with export/report handoff polish or add a live browser smoke that explicitly visits every workspace after deployment.

docs/TODO.md

@@ -62,6 +62,7 @@ This file now starts with the current implementation status. Older preparation/b
 - [x] Decide next V1 stabilization focus: golden dataset expansion or frontend visual polish backlog.
 - [x] Expand golden QA/QC benchmark coverage across partial, perfect, no-overlap and MultiPolygon scenarios.
 - [x] Improve workbench shell visual polish, mobile navigation density and AI result readability.
+- [x] Improve Map workspace layer provenance, empty guidance and selected-feature summary readability.
 
 ## Sprint 8 status
 
@@ -334,3 +335,4 @@ This file now starts with the current implementation status. Older preparation/b
 - [x] Add backend error-envelope audit for expected user-error paths.
 - [x] Expand golden datasets beyond the original single building QA fixture pair.
 - [x] Add workbench visual polish pass for command bar, panel surfaces, empty states and mobile nav density.
+- [x] Add map/result overlay ergonomics for active layer provenance and feature property summaries.