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-plugin-pwa/dist/client/dev/preact.js

@@ -0,0 +1,16 @@
+// src/client/dev/preact.ts
+import { useState } from "preact/hooks";
+function useRegisterSW(_options = {}) {
+  const needRefresh = useState(false);
+  const offlineReady = useState(false);
+  const updateServiceWorker = (_reloadPage) => {
+  };
+  return {
+    needRefresh,
+    offlineReady,
+    updateServiceWorker
+  };
+}
+export {
+  useRegisterSW
+};

pwa/node_modules/vite-plugin-pwa/dist/client/dev/react.js

@@ -0,0 +1,16 @@
+// src/client/dev/react.ts
+import { useState } from "react";
+function useRegisterSW(_options = {}) {
+  const needRefresh = useState(false);
+  const offlineReady = useState(false);
+  const updateServiceWorker = (_reloadPage) => {
+  };
+  return {
+    needRefresh,
+    offlineReady,
+    updateServiceWorker
+  };
+}
+export {
+  useRegisterSW
+};

pwa/node_modules/vite-plugin-pwa/dist/client/dev/register.js

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+// src/client/dev/register.ts
+function registerSW(_options = {}) {
+  return (_reloadPage = true) => {
+  };
+}
+export {
+  registerSW
+};

pwa/node_modules/vite-plugin-pwa/dist/client/dev/solid.js

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+// src/client/dev/solid.ts
+import { createSignal } from "solid-js";
+function useRegisterSW(_options = {}) {
+  const needRefresh = createSignal(false);
+  const offlineReady = createSignal(false);
+  const updateServiceWorker = (_reloadPage) => {
+  };
+  return {
+    needRefresh,
+    offlineReady,
+    updateServiceWorker
+  };
+}
+export {
+  useRegisterSW
+};

pwa/node_modules/vite-plugin-pwa/dist/client/dev/svelte.js

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+// src/client/dev/svelte.ts
+import { writable } from "svelte/store";
+function useRegisterSW(_options = {}) {
+  const needRefresh = writable(false);
+  const offlineReady = writable(false);
+  const updateServiceWorker = (_reloadPage) => {
+  };
+  return {
+    needRefresh,
+    offlineReady,
+    updateServiceWorker
+  };
+}
+export {
+  useRegisterSW
+};

pwa/node_modules/vite-plugin-pwa/dist/client/dev/vue.js

@@ -0,0 +1,16 @@
+// src/client/dev/vue.ts
+import { ref } from "vue";
+function useRegisterSW(_options = {}) {
+  const needRefresh = ref(false);
+  const offlineReady = ref(false);
+  const updateServiceWorker = (_reloadPage) => {
+  };
+  return {
+    updateServiceWorker,
+    offlineReady,
+    needRefresh
+  };
+}
+export {
+  useRegisterSW
+};