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/fast-uri/benchmark/non-simple-domain.mjs

@@ -0,0 +1,22 @@
+import { Bench } from 'tinybench'
+import { nonSimpleDomain } from '../lib/utils.js'
+
+const benchNonSimpleDomain = new Bench({ name: 'nonSimpleDomain' })
+
+const exampleCom = 'example.com'
+const exaumlmpleCom = 'exämple.com'
+const longDomain = 'abc'.repeat(100) + '.com'
+
+console.assert(nonSimpleDomain(exampleCom) === false, 'example.com should be a simple domain')
+console.assert(nonSimpleDomain(exaumlmpleCom) === true, 'exämple.com should not be a simple domain')
+console.assert(nonSimpleDomain(longDomain) === false, `${longDomain} should be a simple domain?`)
+
+benchNonSimpleDomain.add('nonSimpleDomain', function () {
+  nonSimpleDomain(exampleCom)
+  nonSimpleDomain(exaumlmpleCom)
+  nonSimpleDomain(longDomain)
+})
+
+await benchNonSimpleDomain.run()
+console.log(benchNonSimpleDomain.name)
+console.table(benchNonSimpleDomain.table())