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/loupe/lib/index.js

@@ -0,0 +1,152 @@
+/* !
+ * loupe
+ * Copyright(c) 2013 Jake Luer <jake@alogicalparadox.com>
+ * MIT Licensed
+ */
+import inspectArray from './array.js';
+import inspectTypedArray from './typedarray.js';
+import inspectDate from './date.js';
+import inspectFunction from './function.js';
+import inspectMap from './map.js';
+import inspectNumber from './number.js';
+import inspectBigInt from './bigint.js';
+import inspectRegExp from './regexp.js';
+import inspectSet from './set.js';
+import inspectString from './string.js';
+import inspectSymbol from './symbol.js';
+import inspectPromise from './promise.js';
+import inspectClass from './class.js';
+import inspectObject from './object.js';
+import inspectArguments from './arguments.js';
+import inspectError from './error.js';
+import inspectHTMLElement, { inspectNodeCollection } from './html.js';
+import { normaliseOptions } from './helpers.js';
+const symbolsSupported = typeof Symbol === 'function' && typeof Symbol.for === 'function';
+const chaiInspect = symbolsSupported ? Symbol.for('chai/inspect') : '@@chai/inspect';
+const nodeInspect = Symbol.for('nodejs.util.inspect.custom');
+const constructorMap = new WeakMap();
+const stringTagMap = {};
+const baseTypesMap = {
+    undefined: (value, options) => options.stylize('undefined', 'undefined'),
+    null: (value, options) => options.stylize('null', 'null'),
+    boolean: (value, options) => options.stylize(String(value), 'boolean'),
+    Boolean: (value, options) => options.stylize(String(value), 'boolean'),
+    number: inspectNumber,
+    Number: inspectNumber,
+    bigint: inspectBigInt,
+    BigInt: inspectBigInt,
+    string: inspectString,
+    String: inspectString,
+    function: inspectFunction,
+    Function: inspectFunction,
+    symbol: inspectSymbol,
+    // A Symbol polyfill will return `Symbol` not `symbol` from typedetect
+    Symbol: inspectSymbol,
+    Array: inspectArray,
+    Date: inspectDate,
+    Map: inspectMap,
+    Set: inspectSet,
+    RegExp: inspectRegExp,
+    Promise: inspectPromise,
+    // WeakSet, WeakMap are totally opaque to us
+    WeakSet: (value, options) => options.stylize('WeakSet{…}', 'special'),
+    WeakMap: (value, options) => options.stylize('WeakMap{…}', 'special'),
+    Arguments: inspectArguments,
+    Int8Array: inspectTypedArray,
+    Uint8Array: inspectTypedArray,
+    Uint8ClampedArray: inspectTypedArray,
+    Int16Array: inspectTypedArray,
+    Uint16Array: inspectTypedArray,
+    Int32Array: inspectTypedArray,
+    Uint32Array: inspectTypedArray,
+    Float32Array: inspectTypedArray,
+    Float64Array: inspectTypedArray,
+    Generator: () => '',
+    DataView: () => '',
+    ArrayBuffer: () => '',
+    Error: inspectError,
+    HTMLCollection: inspectNodeCollection,
+    NodeList: inspectNodeCollection,
+};
+// eslint-disable-next-line complexity
+const inspectCustom = (value, options, type, inspectFn) => {
+    if (chaiInspect in value && typeof value[chaiInspect] === 'function') {
+        return value[chaiInspect](options);
+    }
+    if (nodeInspect in value && typeof value[nodeInspect] === 'function') {
+        return value[nodeInspect](options.depth, options, inspectFn);
+    }
+    if ('inspect' in value && typeof value.inspect === 'function') {
+        return value.inspect(options.depth, options);
+    }
+    if ('constructor' in value && constructorMap.has(value.constructor)) {
+        return constructorMap.get(value.constructor)(value, options);
+    }
+    if (stringTagMap[type]) {
+        return stringTagMap[type](value, options);
+    }
+    return '';
+};
+const toString = Object.prototype.toString;
+// eslint-disable-next-line complexity
+export function inspect(value, opts = {}) {
+    const options = normaliseOptions(opts, inspect);
+    const { customInspect } = options;
+    let type = value === null ? 'null' : typeof value;
+    if (type === 'object') {
+        type = toString.call(value).slice(8, -1);
+    }
+    // If it is a base value that we already support, then use Loupe's inspector
+    if (type in baseTypesMap) {
+        return baseTypesMap[type](value, options);
+    }
+    // If `options.customInspect` is set to true then try to use the custom inspector
+    if (customInspect && value) {
+        const output = inspectCustom(value, options, type, inspect);
+        if (output) {
+            if (typeof output === 'string')
+                return output;
+            return inspect(output, options);
+        }
+    }
+    const proto = value ? Object.getPrototypeOf(value) : false;
+    // If it's a plain Object then use Loupe's inspector
+    if (proto === Object.prototype || proto === null) {
+        return inspectObject(value, options);
+    }
+    // Specifically account for HTMLElements
+    // @ts-ignore
+    if (value && typeof HTMLElement === 'function' && value instanceof HTMLElement) {
+        return inspectHTMLElement(value, options);
+    }
+    if ('constructor' in value) {
+        // If it is a class, inspect it like an object but add the constructor name
+        if (value.constructor !== Object) {
+            return inspectClass(value, options);
+        }
+        // If it is an object with an anonymous prototype, display it as an object.
+        return inspectObject(value, options);
+    }
+    // last chance to check if it's an object
+    if (value === Object(value)) {
+        return inspectObject(value, options);
+    }
+    // We have run out of options! Just stringify the value
+    return options.stylize(String(value), type);
+}
+export function registerConstructor(constructor, inspector) {
+    if (constructorMap.has(constructor)) {
+        return false;
+    }
+    constructorMap.set(constructor, inspector);
+    return true;
+}
+export function registerStringTag(stringTag, inspector) {
+    if (stringTag in stringTagMap) {
+        return false;
+    }
+    stringTagMap[stringTag] = inspector;
+    return true;
+}
+export const custom = chaiInspect;
+export default inspect;