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/config.d.ts

@@ -0,0 +1,93 @@
+import { UserConfig as UserConfig$1, ConfigEnv } from 'vite';
+export { ConfigEnv, Plugin, UserConfig as ViteUserConfig, mergeConfig } from 'vite';
+import { R as ResolvedCoverageOptions, c as CoverageV8Options, U as UserWorkspaceConfig, d as UserProjectConfigFn, e as UserProjectConfigExport, W as WorkspaceProjectConfiguration } from './chunks/reporters.nr4dxCkA.js';
+import './chunks/vite.CzKp4x9w.js';
+import '@vitest/runner';
+import './chunks/environment.LoooBwUu.js';
+import 'node:stream';
+import '@vitest/utils';
+import './chunks/config.Cy0C388Z.js';
+import '@vitest/pretty-format';
+import '@vitest/snapshot';
+import '@vitest/snapshot/environment';
+import 'vite-node';
+import 'chai';
+import '@vitest/utils/source-map';
+import 'vite-node/client';
+import 'vite-node/server';
+import './chunks/benchmark.geERunq4.js';
+import '@vitest/runner/utils';
+import 'tinybench';
+import '@vitest/snapshot/manager';
+import 'node:fs';
+
+declare const defaultBrowserPort = 63315;
+declare const extraInlineDeps: RegExp[];
+
+declare const defaultInclude: string[];
+declare const defaultExclude: string[];
+declare const coverageConfigDefaults: ResolvedCoverageOptions;
+declare const configDefaults: Readonly<{
+    allowOnly: boolean;
+    isolate: true;
+    watch: boolean;
+    globals: false;
+    environment: "node";
+    pool: "forks";
+    clearMocks: false;
+    restoreMocks: false;
+    mockReset: false;
+    unstubGlobals: false;
+    unstubEnvs: false;
+    include: string[];
+    exclude: string[];
+    teardownTimeout: number;
+    forceRerunTriggers: string[];
+    update: false;
+    reporters: never[];
+    silent: false;
+    hideSkippedTests: false;
+    api: false;
+    ui: false;
+    uiBase: string;
+    open: boolean;
+    css: {
+        include: never[];
+    };
+    coverage: CoverageV8Options;
+    fakeTimers: {
+        loopLimit: number;
+        shouldClearNativeTimers: true;
+        toFake: ("setTimeout" | "setInterval" | "clearInterval" | "clearTimeout" | "setImmediate" | "clearImmediate" | "Date")[];
+    };
+    maxConcurrency: number;
+    dangerouslyIgnoreUnhandledErrors: false;
+    typecheck: {
+        checker: "tsc";
+        include: string[];
+        exclude: string[];
+    };
+    slowTestThreshold: number;
+    disableConsoleIntercept: false;
+}>;
+
+/**
+ * @deprecated Use `ViteUserConfig` instead
+ */
+type UserConfig = UserConfig$1;
+
+type UserConfigFnObject = (env: ConfigEnv) => UserConfig$1;
+type UserConfigFnPromise = (env: ConfigEnv) => Promise<UserConfig$1>;
+type UserConfigFn = (env: ConfigEnv) => UserConfig$1 | Promise<UserConfig$1>;
+type UserConfigExport = UserConfig$1 | Promise<UserConfig$1> | UserConfigFnObject | UserConfigFnPromise | UserConfigFn;
+declare function defineConfig(config: UserConfig$1): UserConfig$1;
+declare function defineConfig(config: Promise<UserConfig$1>): Promise<UserConfig$1>;
+declare function defineConfig(config: UserConfigFnObject): UserConfigFnObject;
+declare function defineConfig(config: UserConfigExport): UserConfigExport;
+declare function defineProject(config: UserWorkspaceConfig): UserWorkspaceConfig;
+declare function defineProject(config: Promise<UserWorkspaceConfig>): Promise<UserWorkspaceConfig>;
+declare function defineProject(config: UserProjectConfigFn): UserProjectConfigFn;
+declare function defineProject(config: UserProjectConfigExport): UserProjectConfigExport;
+declare function defineWorkspace(config: WorkspaceProjectConfiguration[]): WorkspaceProjectConfiguration[];
+
+export { type UserConfig, type UserConfigExport, type UserConfigFn, type UserConfigFnObject, type UserConfigFnPromise, UserProjectConfigExport, UserProjectConfigFn, UserWorkspaceConfig, WorkspaceProjectConfiguration, configDefaults, coverageConfigDefaults, defaultBrowserPort, defaultExclude, defaultInclude, defineConfig, defineProject, defineWorkspace, extraInlineDeps };