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/@babel/traverse/lib/path/comments.js

@@ -0,0 +1,52 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.addComment = addComment;
+exports.addComments = addComments;
+exports.shareCommentsWithSiblings = shareCommentsWithSiblings;
+var _t = require("@babel/types");
+const {
+  addComment: _addComment,
+  addComments: _addComments
+} = _t;
+function shareCommentsWithSiblings() {
+  if (typeof this.key === "string") return;
+  const node = this.node;
+  if (!node) return;
+  const trailing = node.trailingComments;
+  const leading = node.leadingComments;
+  if (!trailing && !leading) return;
+  const prev = this.getSibling(this.key - 1);
+  const next = this.getSibling(this.key + 1);
+  const hasPrev = Boolean(prev.node);
+  const hasNext = Boolean(next.node);
+  if (hasPrev) {
+    if (leading) {
+      prev.addComments("trailing", removeIfExisting(leading, prev.node.trailingComments));
+    }
+    if (trailing && !hasNext) prev.addComments("trailing", trailing);
+  }
+  if (hasNext) {
+    if (trailing) {
+      next.addComments("leading", removeIfExisting(trailing, next.node.leadingComments));
+    }
+    if (leading && !hasPrev) next.addComments("leading", leading);
+  }
+}
+function removeIfExisting(list, toRemove) {
+  if (!(toRemove != null && toRemove.length)) return list;
+  const set = new Set(toRemove);
+  return list.filter(el => {
+    return !set.has(el);
+  });
+}
+function addComment(type, content, line) {
+  _addComment(this.node, type, content, line);
+}
+function addComments(type, comments) {
+  _addComments(this.node, type, comments);
+}
+
+//# sourceMappingURL=comments.js.map