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/workbox-build/build/lib/populate-sw-template.js

@@ -0,0 +1,79 @@
+"use strict";
+/*
+  Copyright 2018 Google LLC
+
+  Use of this source code is governed by an MIT-style
+  license that can be found in the LICENSE file or at
+  https://opensource.org/licenses/MIT.
+*/
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.populateSWTemplate = void 0;
+const template_1 = __importDefault(require("lodash/template"));
+const errors_1 = require("./errors");
+const module_registry_1 = require("./module-registry");
+const runtime_caching_converter_1 = require("./runtime-caching-converter");
+const stringify_without_comments_1 = require("./stringify-without-comments");
+const sw_template_1 = require("../templates/sw-template");
+function populateSWTemplate({ cacheId, cleanupOutdatedCaches, clientsClaim, directoryIndex, disableDevLogs, ignoreURLParametersMatching, importScripts, manifestEntries = [], navigateFallback, navigateFallbackDenylist, navigateFallbackAllowlist, navigationPreload, offlineGoogleAnalytics, runtimeCaching = [], skipWaiting, }) {
+    // There needs to be at least something to precache, or else runtime caching.
+    if (!((manifestEntries === null || manifestEntries === void 0 ? void 0 : manifestEntries.length) > 0 || runtimeCaching.length > 0)) {
+        throw new Error(errors_1.errors['no-manifest-entries-or-runtime-caching']);
+    }
+    // These are all options that can be passed to the precacheAndRoute() method.
+    const precacheOptions = {
+        directoryIndex,
+        // An array of RegExp objects can't be serialized by JSON.stringify()'s
+        // default behavior, so if it's given, convert it manually.
+        ignoreURLParametersMatching: ignoreURLParametersMatching
+            ? []
+            : undefined,
+    };
+    let precacheOptionsString = JSON.stringify(precacheOptions, null, 2);
+    if (ignoreURLParametersMatching) {
+        precacheOptionsString = precacheOptionsString.replace(`"ignoreURLParametersMatching": []`, `"ignoreURLParametersMatching": [` +
+            `${ignoreURLParametersMatching.join(', ')}]`);
+    }
+    let offlineAnalyticsConfigString = undefined;
+    if (offlineGoogleAnalytics) {
+        // If offlineGoogleAnalytics is a truthy value, we need to convert it to the
+        // format expected by the template.
+        offlineAnalyticsConfigString =
+            offlineGoogleAnalytics === true
+                ? // If it's the literal value true, then use an empty config string.
+                    '{}'
+                : // Otherwise, convert the config object into a more complex string, taking
+                    // into account the fact that functions might need to be stringified.
+                    (0, stringify_without_comments_1.stringifyWithoutComments)(offlineGoogleAnalytics);
+    }
+    const moduleRegistry = new module_registry_1.ModuleRegistry();
+    try {
+        const populatedTemplate = (0, template_1.default)(sw_template_1.swTemplate)({
+            cacheId,
+            cleanupOutdatedCaches,
+            clientsClaim,
+            disableDevLogs,
+            importScripts,
+            manifestEntries,
+            navigateFallback,
+            navigateFallbackDenylist,
+            navigateFallbackAllowlist,
+            navigationPreload,
+            offlineAnalyticsConfigString,
+            precacheOptionsString,
+            runtimeCaching: (0, runtime_caching_converter_1.runtimeCachingConverter)(moduleRegistry, runtimeCaching),
+            skipWaiting,
+            use: moduleRegistry.use.bind(moduleRegistry),
+        });
+        const workboxImportStatements = moduleRegistry.getImportStatements();
+        // We need the import statements for all of the Workbox runtime modules
+        // prepended, so that the correct bundle can be created.
+        return workboxImportStatements.join('\n') + populatedTemplate;
+    }
+    catch (error) {
+        throw new Error(`${errors_1.errors['populating-sw-tmpl-failed']} '${error instanceof Error && error.message ? error.message : ''}'`);
+    }
+}
+exports.populateSWTemplate = populateSWTemplate;