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trails/openspec/changes/archive/2026-03-26-planner-features/specs/crash-recovery/spec.md
Ullrich Schäfer ba044610b7
Add route interactions: click-to-split, drag-to-reshape, colored route rendering 
- Enrich BRouter response with per-point 3D coordinates and segment boundary
  tracking (EnrichedRoute interface)
- ColoredRoute component: plain, elevation gradient (green→yellow→red), and
  surface color modes with invisible wide polyline for click targeting
- Click-to-split: click on route polyline inserts waypoint at nearest point,
  mapped to correct segment via boundary indices
- MidpointHandles: draggable CircleMarkers at route segment midpoints for
  reshaping, hidden below zoom 12, opaque on hover
- Color mode toggle (select) synced via Yjs routeData
- i18n keys for color mode labels (en + de)
- Unit tests for segment boundary tracking (13 tests)
- E2E tests for enriched route response and color mode toggle

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-26 22:36:42 +01:00

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ADDED Requirements

Requirement: localStorage crash recovery

The Planner SHALL periodically save Yjs state to localStorage and recover it on reconnect.

Scenario: Browser crash recovery

  • WHEN a user's browser crashes and they reopen the session
  • THEN unsaved changes from localStorage are merged with the server state

Scenario: Clean exit

  • WHEN a session syncs successfully
  • THEN the localStorage backup is cleared