Add progressive web app companion for cross-platform access

Vite + TypeScript PWA that mirrors the Android app's core features:
- Pre-processed shelter data (build-time UTM33N→WGS84 conversion)
- Leaflet map with shelter markers, user location, and offline tiles
- Canvas compass arrow (ported from DirectionArrowView.kt)
- IndexedDB shelter cache with 7-day staleness check
- Service worker with CacheFirst tiles and precached app shell
- i18n for en, nb, nn (ported from Android strings.xml)
- iOS/Android compass handling with low-pass filter
- Respects user map interaction (no auto-snap on pan/zoom)
- Build revision cache-breaker for reliable SW updates

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Ole-Morten Duesund 2026-03-08 17:41:38 +01:00
commit e8428de775
12051 changed files with 1799735 additions and 0 deletions

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const set = require('regenerate')(0x19BA, 0xAAB9);
set.addRange(0xE40, 0xE44).addRange(0xEC0, 0xEC4).addRange(0x19B5, 0x19B7).addRange(0xAAB5, 0xAAB6).addRange(0xAABB, 0xAABC);
exports.characters = set;