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/runner/dist/utils.d.ts

@@ -0,0 +1,34 @@
+import { S as Suite, F as File, T as Task, a as Test, C as Custom } from './tasks-3ZnPj1LR.js';
+export { b as ChainableFunction, c as createChainable } from './tasks-3ZnPj1LR.js';
+import { Arrayable } from '@vitest/utils';
+
+/**
+ * If any tasks been marked as `only`, mark all other tasks as `skip`.
+ */
+declare function interpretTaskModes(suite: Suite, namePattern?: string | RegExp, onlyMode?: boolean, parentIsOnly?: boolean, allowOnly?: boolean): void;
+declare function someTasksAreOnly(suite: Suite): boolean;
+declare function generateHash(str: string): string;
+declare function calculateSuiteHash(parent: Suite): void;
+declare function createFileTask(filepath: string, root: string, projectName: string | undefined, pool?: string): File;
+
+/**
+ * Return a function for running multiple async operations with limited concurrency.
+ */
+declare function limitConcurrency(concurrency?: number): <Args extends unknown[], T>(func: (...args: Args) => PromiseLike<T> | T, ...args: Args) => Promise<T>;
+
+/**
+ * Partition in tasks groups by consecutive concurrent
+ */
+declare function partitionSuiteChildren(suite: Suite): Task[][];
+
+declare function isAtomTest(s: Task): s is Test | Custom;
+declare function getTests(suite: Arrayable<Task>): (Test | Custom)[];
+declare function getTasks(tasks?: Arrayable<Task>): Task[];
+declare function getSuites(suite: Arrayable<Task>): Suite[];
+declare function hasTests(suite: Arrayable<Suite>): boolean;
+declare function hasFailed(suite: Arrayable<Task>): boolean;
+declare function getNames(task: Task): string[];
+declare function getFullName(task: Task, separator?: string): string;
+declare function getTestName(task: Task, separator?: string): string;
+
+export { calculateSuiteHash, createFileTask, generateHash, getFullName, getNames, getSuites, getTasks, getTestName, getTests, hasFailed, hasTests, interpretTaskModes, isAtomTest, limitConcurrency, partitionSuiteChildren, someTasksAreOnly };