trails/openspec/specs/map-display/spec.md
Ullrich Schäfer e530492753
Archive phase-1-mvp, sync specs to main
All 85 tasks complete. Archive change to openspec/changes/archive/ and
sync 9 capability specs to openspec/specs/ for future reference.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-25 02:55:28 +01:00

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## ADDED Requirements
### Requirement: Map rendering with OSM tiles
The Planner and Journal SHALL render interactive maps using Leaflet with OpenStreetMap tiles as the default base layer.
#### Scenario: Default map view
- **WHEN** a user opens the Planner or a route view in the Journal
- **THEN** an interactive map is displayed with OpenStreetMap tiles centered on the route or a default location (Germany)
### Requirement: Base layer switching
The map SHALL support switching between multiple base tile layers.
#### Scenario: Switch to OpenTopoMap
- **WHEN** a user selects "OpenTopoMap" from the layer switcher
- **THEN** the map tiles change to topographic tiles from OpenTopoMap
#### Scenario: Available base layers
- **WHEN** a user opens the layer switcher
- **THEN** the options include OpenStreetMap, OpenTopoMap, and CyclOSM
### Requirement: Waypoint editing on map
The Planner map SHALL allow users to add, move, and delete waypoints by interacting with the map.
#### Scenario: Add waypoint by clicking
- **WHEN** a user clicks on the map
- **THEN** a new waypoint is added at the clicked location and synced via Yjs
#### Scenario: Move waypoint by dragging
- **WHEN** a user drags an existing waypoint marker
- **THEN** the waypoint coordinates update and sync via Yjs
#### Scenario: Delete waypoint
- **WHEN** a user right-clicks a waypoint and selects "Delete"
- **THEN** the waypoint is removed and the change syncs via Yjs
### Requirement: Route visualization
The map SHALL display the computed route as a polyline on the map.
#### Scenario: Display route
- **WHEN** BRouter returns a route GeoJSON
- **THEN** the route is rendered as a colored polyline on the map
#### Scenario: Route updates on waypoint change
- **WHEN** a waypoint is added, moved, or deleted
- **THEN** the route polyline updates after BRouter recomputes the route
### Requirement: Elevation profile display
The Planner SHALL display an elevation profile chart for the current route.
#### Scenario: Show elevation profile
- **WHEN** a route is computed
- **THEN** an elevation profile chart is displayed below the map showing distance vs elevation with total ascent/descent statistics