Closes#796.
The maps API has accepted and persisted `notes` on map markers since
PR #770, but the marker popup component still rendered name only and
ignored the field. Now the popup shows a notes block beneath the name
when it's populated, with whitespace preserved and long text wrapped.
Threaded `notes` through the read path:
- `api.listMapMarkers` / `api.createMapMarker` response types
- `MapMarker` interface in `useMapMarkers` and the data.map projection
- `MapComponent`'s selectedMarker popup
The create/update UI is unchanged — users still set notes via the API
or DB directly, matching the issue's stated scope. A marker entry with
empty/whitespace-only notes renders the same as before.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Add distance scale bar and user-placed location pins to the offline maps viewer.
- Scale bar (bottom-left) shows distance reference that updates with zoom level
- Click anywhere on map to place a named pin with color selection (6 colors)
- Collapsible "Saved Locations" panel lists all pins with fly-to navigation
- Full dark mode support for popups and panel via CSS overrides
- New `map_markers` table with future-proofed columns for routing (marker_type,
route_id, route_order, notes) to avoid a migration when routes are added later
- CRUD endpoints: GET/POST /api/maps/markers, PATCH/DELETE /api/maps/markers/:id
- VineJS validation on create/update
- MapMarker Lucid model
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>