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/vitest/dist/runners.d.ts

@@ -0,0 +1,41 @@
+import * as tinybench from 'tinybench';
+import { VitestRunner, VitestRunnerImportSource, Suite, File, Task, CancelReason, Test, Custom, TaskContext, ExtendedContext } from '@vitest/runner';
+import { S as SerializedConfig } from './chunks/config.Cy0C388Z.js';
+import '@vitest/pretty-format';
+import '@vitest/snapshot';
+import '@vitest/snapshot/environment';
+
+declare class NodeBenchmarkRunner implements VitestRunner {
+    config: SerializedConfig;
+    private __vitest_executor;
+    constructor(config: SerializedConfig);
+    importTinybench(): Promise<typeof tinybench>;
+    importFile(filepath: string, source: VitestRunnerImportSource): unknown;
+    runSuite(suite: Suite): Promise<void>;
+    runTask(): Promise<void>;
+}
+
+declare class VitestTestRunner implements VitestRunner {
+    config: SerializedConfig;
+    private snapshotClient;
+    private workerState;
+    private __vitest_executor;
+    private cancelRun;
+    private assertionsErrors;
+    pool: string;
+    constructor(config: SerializedConfig);
+    importFile(filepath: string, source: VitestRunnerImportSource): unknown;
+    onCollectStart(file: File): void;
+    onBeforeRunFiles(): void;
+    onAfterRunFiles(): void;
+    onAfterRunSuite(suite: Suite): Promise<void>;
+    onAfterRunTask(test: Task): void;
+    onCancel(_reason: CancelReason): void;
+    onBeforeRunTask(test: Task): Promise<void>;
+    onBeforeRunSuite(suite: Suite): Promise<void>;
+    onBeforeTryTask(test: Task): void;
+    onAfterTryTask(test: Task): void;
+    extendTaskContext<T extends Test | Custom>(context: TaskContext<T>): ExtendedContext<T>;
+}
+
+export { NodeBenchmarkRunner, VitestTestRunner };