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/node.js

@@ -0,0 +1,76 @@
+import { createServer as createServer$1 } from 'vite';
+export { isFileServingAllowed, parseAst, parseAstAsync } from 'vite';
+import { f as TestModule } from './chunks/index.DsZFoqi9.js';
+export { e as TestCase, i as TestProject, g as TestSuite } from './chunks/index.DsZFoqi9.js';
+export { G as GitNotFoundError, T as TestSpecification, F as TestsNotFoundError, V as VitestPackageInstaller, a as VitestPlugin, d as createViteLogger, c as createVitest, i as isValidApiRequest, b as registerConsoleShortcuts, r as resolveFsAllow, s as startVitest } from './chunks/cli-api.DqsSTaIi.js';
+export { p as parseCLI } from './chunks/cac.CB_9Zo9Q.js';
+export { d as createMethodsRPC, g as getFilePoolName, a as resolveApiServerConfig, b as resolveConfig } from './chunks/resolveConfig.rBxzbVsl.js';
+export { B as BaseSequencer } from './chunks/RandomSequencer.CMRlh2v4.js';
+export { distDir, rootDir } from './path.js';
+import createDebug from 'debug';
+import 'node:fs';
+import '@vitest/runner/utils';
+import 'pathe';
+import 'tinyrainbow';
+import './chunks/utils.DNoFbBUZ.js';
+import 'node:util';
+import '@vitest/utils';
+import 'node:perf_hooks';
+import '@vitest/utils/source-map';
+import 'std-env';
+import 'node:fs/promises';
+import 'node:stream';
+import 'node:console';
+import 'node:process';
+import './chunks/_commonjsHelpers.BFTU3MAI.js';
+import 'assert';
+import 'events';
+import 'node:module';
+import 'node:os';
+import './chunks/coverage.BoMDb1ip.js';
+import 'node:path';
+import './chunks/index.BJDntFik.js';
+import 'node:url';
+import 'readline';
+import './chunks/constants.fzPh7AOq.js';
+import '@vitest/snapshot/manager';
+import 'vite-node/client';
+import 'vite-node/server';
+import './chunks/index.68735LiX.js';
+import 'stream';
+import 'zlib';
+import 'buffer';
+import 'crypto';
+import 'https';
+import 'http';
+import 'net';
+import 'tls';
+import 'url';
+import 'node:crypto';
+import 'os';
+import 'path';
+import 'fs';
+import 'vite-node/utils';
+import '@vitest/mocker/node';
+import 'magic-string';
+import 'node:readline';
+import 'node:assert';
+import 'node:v8';
+import 'util';
+import 'node:events';
+import 'tinypool';
+import 'node:worker_threads';
+import 'tinyexec';
+
+function createDebugger(namespace) {
+  const debug = createDebug(namespace);
+  if (debug.enabled) {
+    return debug;
+  }
+}
+
+const createServer = createServer$1;
+const createViteServer = createServer$1;
+const TestFile = TestModule;
+
+export { TestFile, TestModule, createDebugger, createServer, createViteServer };