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Add progressive web app companion for cross-platform access

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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
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pwa/node_modules/regenerate-unicode-properties/Script/Inherited.js generated vendored Normal file
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const set = require('regenerate')(0x670, 0x1CED, 0x1CF4, 0x101FD, 0x102E0, 0x1133B);
set.addRange(0x300, 0x36F).addRange(0x485, 0x486).addRange(0x64B, 0x655).addRange(0x951, 0x954).addRange(0x1AB0, 0x1ADD).addRange(0x1AE0, 0x1AEB).addRange(0x1CD0, 0x1CD2).addRange(0x1CD4, 0x1CE0).addRange(0x1CE2, 0x1CE8).addRange(0x1CF8, 0x1CF9).addRange(0x1DC0, 0x1DFF).addRange(0x200C, 0x200D).addRange(0x20D0, 0x20F0).addRange(0x302A, 0x302D).addRange(0x3099, 0x309A).addRange(0xFE00, 0xFE0F).addRange(0xFE20, 0xFE2D).addRange(0x1CF00, 0x1CF2D).addRange(0x1CF30, 0x1CF46).addRange(0x1D167, 0x1D169).addRange(0x1D17B, 0x1D182).addRange(0x1D185, 0x1D18B).addRange(0x1D1AA, 0x1D1AD).addRange(0xE0100, 0xE01EF);
exports.characters = set;