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>

pwa/node_modules/tsx/dist/loader.mjs

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+import{r}from"./get-pipe-path-BHW2eJdv.mjs";import{globalPreload as w,initialize as y,load as A,resolve as B}from"./esm/index.mjs";import"module";import"node:path";import"./temporary-directory-CwHp0_NW.mjs";import"node:os";import"node:worker_threads";import"./node-features-_8ZFwP_x.mjs";import"./register-B7jrtLTO.mjs";import"node:module";import"./register-CFH5oNdT.mjs";import"node:url";import"get-tsconfig";import"node:fs";import"./index-7AaEi15b.mjs";import"esbuild";import"node:crypto";import"./client-BQVF1NaW.mjs";import"node:net";import"node:util";import"./index-gbaejti9.mjs";import"./require-DQxpCAr4.mjs";import"node:fs/promises";r("./cjs/index.cjs");export{w as globalPreload,y as initialize,A as load,B as resolve};