Add E2E tests for waypoint notes and nearby POI snap; archive waypoint-notes

- E2E: type a note, blur, verify it persists and appears in GPX <desc> on <wpt>
- E2E: mock Overpass, select waypoint, verify Nearby list, snap to POI,
  verify note prefix prepended
- Sync waypoint-notes delta spec → openspec/specs/waypoint-notes/spec.md
- Archive waypoint-notes change

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

openspec/changes/archive/2026-05-18-waypoint-notes/tasks.md

@@ -29,7 +29,7 @@
 ## 6. Testing (Notes)
 
 - [x] 6.1 Unit tests: per-waypoint `<desc>` in GPX generation; `<desc>` inside `<wpt>` parsed into `note`; verify no collision with `metadata > desc`
-- [ ] 6.2 E2E test: type a note in sidebar, blur, verify note persists; verify GPX export contains `<desc>` inside `<wpt>`
+- [x] 6.2 E2E test: type a note in sidebar, blur, verify note persists; verify GPX export contains `<desc>` inside `<wpt>`
 
 ## 7. POI Data Layer (per-waypoint)
 
@@ -62,4 +62,4 @@
 - [x] 11.2 POI cache unit tests — `poi-cache.test.ts` already covers this
 - [x] 11.3 Unit tests for `fetchNearbyPois`: correct bbox from lat/lon/radius, category filtering
 - [x] 11.4 Unit tests for snap: coords updated, name set, note prefix prepended, existing note preserved, all in one Yjs transaction
-- [ ] 11.5 E2E test: mock Overpass via route handler, select a waypoint, verify Nearby list appears, click snap, verify waypoint moved and note prefixed
+- [x] 11.5 E2E test: mock Overpass via route handler, select a waypoint, verify Nearby list appears, click snap, verify waypoint moved and note prefixed

openspec/specs/waypoint-notes/spec.md

@@ -0,0 +1,46 @@
+## ADDED Requirements
+
+### Requirement: Per-waypoint text notes
+Each waypoint SHALL support an optional plain-text note synced via Yjs.
+
+#### Scenario: Add note to waypoint
+- **WHEN** a user clicks the note area under a waypoint in the sidebar and types text
+- **THEN** the note is stored in the waypoint's Y.Map as a `note` string field
+- **AND** auto-saves on blur
+
+#### Scenario: Note syncs to participants
+- **WHEN** a user adds or edits a waypoint note
+- **THEN** all other participants see the update in real-time via Yjs
+
+### Requirement: Map note indicators
+Waypoint markers with notes SHALL show a visual indicator on the map.
+
+#### Scenario: Note icon on marker
+- **WHEN** a waypoint has a note
+- **THEN** its map marker shows a small note icon
+
+#### Scenario: Note tooltip
+- **WHEN** a user hovers or taps a marker with a note
+- **THEN** the note text appears in a tooltip
+
+### Requirement: Notes in GPX export
+Waypoint notes SHALL be exported as `<desc>` elements in GPX output.
+
+#### Scenario: Export notes
+- **WHEN** a user exports a plan with waypoint notes
+- **THEN** each waypoint's note appears as a `<desc>` element in the GPX file
+
+### Requirement: Nearby POI display
+When a waypoint is selected, nearby POIs from OpenStreetMap SHALL be shown on the map and in the sidebar.
+
+#### Scenario: POI lookup
+- **WHEN** a user selects a waypoint
+- **THEN** nearby POIs are fetched from the Overpass API and displayed as small markers on the map and as a list in the sidebar
+
+### Requirement: Snap waypoint to POI
+Users SHALL be able to move a waypoint to a nearby POI's exact coordinates.
+
+#### Scenario: Snap to POI
+- **WHEN** a user clicks a nearby POI
+- **THEN** the waypoint moves to the POI's coordinates
+- **AND** the POI's name and type are added as a note prefix (e.g., "Campsite - Waldcamp Fichtelberg")