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/workers/runVmTests.js

@@ -0,0 +1,95 @@
+import { createRequire } from 'node:module';
+import { performance } from 'node:perf_hooks';
+import timers from 'node:timers';
+import util from 'node:util';
+import { startTests, collectTests } from '@vitest/runner';
+import { KNOWN_ASSET_TYPES } from 'vite-node/constants';
+import { installSourcemapsSupport } from 'vite-node/source-map';
+import { s as setupChaiConfig, r as resolveTestRunner, a as resolveSnapshotEnvironment } from '../chunks/index.nEwtF0bu.js';
+import { s as startCoverageInsideWorker, a as stopCoverageInsideWorker } from '../chunks/coverage.BoMDb1ip.js';
+import { V as VitestIndex } from '../chunks/index.ckWaX2gY.js';
+import { c as closeInspector } from '../chunks/inspector.70d6emsh.js';
+import { s as setupCommonEnv } from '../chunks/setup-common.Dj6BZI3u.js';
+import { g as getWorkerState } from '../chunks/utils.C8RiOc4B.js';
+import 'chai';
+import 'node:path';
+import '../path.js';
+import 'node:url';
+import '../chunks/rpc.C3q9uwRX.js';
+import '@vitest/utils';
+import '../chunks/index.68735LiX.js';
+import '../chunks/vi.DgezovHB.js';
+import '@vitest/expect';
+import '@vitest/runner/utils';
+import '../chunks/_commonjsHelpers.BFTU3MAI.js';
+import '@vitest/snapshot';
+import '@vitest/utils/error';
+import '@vitest/utils/source-map';
+import '../chunks/date.W2xKR2qe.js';
+import '@vitest/spy';
+import '../chunks/run-once.2ogXb3JV.js';
+import '../chunks/benchmark.Cdu9hjj4.js';
+import 'expect-type';
+
+async function run(method, files, config, executor) {
+  const workerState = getWorkerState();
+  await setupCommonEnv(config);
+  Object.defineProperty(globalThis, "__vitest_index__", {
+    value: VitestIndex,
+    enumerable: false
+  });
+  if (workerState.environment.transformMode === "web") {
+    const _require = createRequire(import.meta.url);
+    _require.extensions[".css"] = resolveCss;
+    _require.extensions[".scss"] = resolveCss;
+    _require.extensions[".sass"] = resolveCss;
+    _require.extensions[".less"] = resolveCss;
+    KNOWN_ASSET_TYPES.forEach((type) => {
+      _require.extensions[`.${type}`] = resolveAsset;
+    });
+    process.env.SSR = "";
+  } else {
+    process.env.SSR = "1";
+  }
+  globalThis.__vitest_required__ = {
+    util,
+    timers
+  };
+  installSourcemapsSupport({
+    getSourceMap: (source) => workerState.moduleCache.getSourceMap(source)
+  });
+  await startCoverageInsideWorker(config.coverage, executor);
+  if (config.chaiConfig) {
+    setupChaiConfig(config.chaiConfig);
+  }
+  const [runner, snapshotEnvironment] = await Promise.all([
+    resolveTestRunner(config, executor),
+    resolveSnapshotEnvironment(config, executor)
+  ]);
+  config.snapshotOptions.snapshotEnvironment = snapshotEnvironment;
+  workerState.onCancel.then((reason) => {
+    closeInspector(config);
+    runner.onCancel?.(reason);
+  });
+  workerState.durations.prepare = performance.now() - workerState.durations.prepare;
+  const { vi } = VitestIndex;
+  for (const file of files) {
+    workerState.filepath = file;
+    if (method === "run") {
+      await startTests([file], runner);
+    } else {
+      await collectTests([file], runner);
+    }
+    vi.resetConfig();
+    vi.restoreAllMocks();
+  }
+  await stopCoverageInsideWorker(config.coverage, executor);
+}
+function resolveCss(mod) {
+  mod.exports = "";
+}
+function resolveAsset(mod, url) {
+  mod.exports = url;
+}
+
+export { run };