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/chunks/constants.fzPh7AOq.js

@@ -0,0 +1,46 @@
+const defaultPort = 51204;
+const defaultBrowserPort = 63315;
+const defaultInspectPort = 9229;
+const API_PATH = "/__vitest_api__";
+const extraInlineDeps = [
+  /^(?!.*node_modules).*\.mjs$/,
+  /^(?!.*node_modules).*\.cjs\.js$/,
+  // Vite client
+  /vite\w*\/dist\/client\/env.mjs/
+];
+const CONFIG_NAMES = ["vitest.config", "vite.config"];
+const WORKSPACES_NAMES = ["vitest.workspace", "vitest.projects"];
+const CONFIG_EXTENSIONS = [".ts", ".mts", ".cts", ".js", ".mjs", ".cjs"];
+const configFiles = CONFIG_NAMES.flatMap(
+  (name) => CONFIG_EXTENSIONS.map((ext) => name + ext)
+);
+const WORKSPACES_EXTENSIONS = [...CONFIG_EXTENSIONS, ".json"];
+const workspacesFiles = WORKSPACES_NAMES.flatMap(
+  (name) => WORKSPACES_EXTENSIONS.map((ext) => name + ext)
+);
+const globalApis = [
+  // suite
+  "suite",
+  "test",
+  "describe",
+  "it",
+  // chai
+  "chai",
+  "expect",
+  "assert",
+  // typecheck
+  "expectTypeOf",
+  "assertType",
+  // utils
+  "vitest",
+  "vi",
+  // hooks
+  "beforeAll",
+  "afterAll",
+  "beforeEach",
+  "afterEach",
+  "onTestFinished",
+  "onTestFailed"
+];
+
+export { API_PATH as A, defaultBrowserPort as a, defaultInspectPort as b, configFiles as c, defaultPort as d, extraInlineDeps as e, globalApis as g, workspacesFiles as w };