Replace the planner's Overpass proxy with a self-hosted POI index:
- map-core POI categories become structured tag selectors (single source of
truth) + osmium filter / classification helpers
- planner.pois PostGIS table (centroid points, GiST + category indexes)
- /api/pois serving route (session + same-origin + rate limit, 100 cap)
- lib/pois.ts client (renamed from overpass.ts; GET, quantized bbox)
- metrics: poi_api_requests_total + DB-collected index rows/age gauges;
drop overpass_* metrics
- remove /api/overpass proxy + dead OVERPASS_URLS on the planner service
(Journal surface backfill still uses it via code default)
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
- `note` field on Waypoint type, stored in Yjs Y.Map and exported as
`<desc>` inside `<wpt>` in GPX
- Inline textarea note editing in WaypointSidebar with auto-resize,
character counter (500 max), save-on-blur, Escape cancel
- Note indicator dot on map markers; note tooltip on hover
- `useNearbyPois` hook: fetches POIs within 500m of selected waypoint
via Overpass proxy, 500ms debounce, AbortController, 60s rate-limit
suppression
- NearbyPoiMarkers component: renders POI markers on map for selected
waypoint with snap-to-POI on click
- Nearby section in WaypointSidebar: list with snap buttons, spinner,
empty/rate-limited states, "Show more" toggle (5 → all)
- Unit tests for fetchNearbyPois bbox geometry and snap-to-POI Yjs
transaction behaviour
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
