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/cac/deno/Option.ts

@@ -0,0 +1,52 @@
+import { removeBrackets, camelcaseOptionName } from "./utils.ts";
+interface OptionConfig {
+  default?: any;
+  type?: any[];
+}
+export default class Option {
+  /** Option name */
+  name: string;
+  /** Option name and aliases */
+
+  names: string[];
+  isBoolean?: boolean; // `required` will be a boolean for options with brackets
+
+  required?: boolean;
+  config: OptionConfig;
+  negated: boolean;
+
+  constructor(public rawName: string, public description: string, config?: OptionConfig) {
+    this.config = Object.assign({}, config); // You may use cli.option('--env.* [value]', 'desc') to denote a dot-nested option
+
+    rawName = rawName.replace(/\.\*/g, '');
+    this.negated = false;
+    this.names = removeBrackets(rawName).split(',').map((v: string) => {
+      let name = v.trim().replace(/^-{1,2}/, '');
+
+      if (name.startsWith('no-')) {
+        this.negated = true;
+        name = name.replace(/^no-/, '');
+      }
+
+      return camelcaseOptionName(name);
+    }).sort((a, b) => a.length > b.length ? 1 : -1); // Sort names
+    // Use the longest name (last one) as actual option name
+
+    this.name = this.names[this.names.length - 1];
+
+    if (this.negated && this.config.default == null) {
+      this.config.default = true;
+    }
+
+    if (rawName.includes('<')) {
+      this.required = true;
+    } else if (rawName.includes('[')) {
+      this.required = false;
+    } else {
+      // No arg needed, it's boolean flag
+      this.isBoolean = true;
+    }
+  }
+
+}
+export type { OptionConfig };