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/lodash/_createBaseEach.js

@@ -0,0 +1,32 @@
+var isArrayLike = require('./isArrayLike');
+
+/**
+ * Creates a `baseEach` or `baseEachRight` function.
+ *
+ * @private
+ * @param {Function} eachFunc The function to iterate over a collection.
+ * @param {boolean} [fromRight] Specify iterating from right to left.
+ * @returns {Function} Returns the new base function.
+ */
+function createBaseEach(eachFunc, fromRight) {
+  return function(collection, iteratee) {
+    if (collection == null) {
+      return collection;
+    }
+    if (!isArrayLike(collection)) {
+      return eachFunc(collection, iteratee);
+    }
+    var length = collection.length,
+        index = fromRight ? length : -1,
+        iterable = Object(collection);
+
+    while ((fromRight ? index-- : ++index < length)) {
+      if (iteratee(iterable[index], index, iterable) === false) {
+        break;
+      }
+    }
+    return collection;
+  };
+}
+
+module.exports = createBaseEach;