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/vite-node/dist/cli.d.ts

@@ -0,0 +1,21 @@
+import { V as ViteNodeServerOptions } from './index-z0R8hVRu.js';
+import './trace-mapping.d-DLVdEqOp.js';
+
+interface CliOptions {
+    'root'?: string;
+    'script'?: boolean;
+    'config'?: string;
+    'mode'?: string;
+    'watch'?: boolean;
+    'options'?: ViteNodeServerOptionsCLI;
+    'version'?: boolean;
+    'help'?: boolean;
+    '--'?: string[];
+}
+type Optional<T> = T | undefined;
+type ComputeViteNodeServerOptionsCLI<T extends Record<string, any>> = {
+    [K in keyof T]: T[K] extends Optional<RegExp[]> ? string | string[] : T[K] extends Optional<(string | RegExp)[]> ? string | string[] : T[K] extends Optional<(string | RegExp)[] | true> ? string | string[] | true : T[K] extends Optional<Record<string, any>> ? ComputeViteNodeServerOptionsCLI<T[K]> : T[K];
+};
+type ViteNodeServerOptionsCLI = ComputeViteNodeServerOptionsCLI<ViteNodeServerOptions>;
+
+export type { CliOptions, ViteNodeServerOptionsCLI };