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/_createCurry.js

@@ -0,0 +1,46 @@
+var apply = require('./_apply'),
+    createCtor = require('./_createCtor'),
+    createHybrid = require('./_createHybrid'),
+    createRecurry = require('./_createRecurry'),
+    getHolder = require('./_getHolder'),
+    replaceHolders = require('./_replaceHolders'),
+    root = require('./_root');
+
+/**
+ * Creates a function that wraps `func` to enable currying.
+ *
+ * @private
+ * @param {Function} func The function to wrap.
+ * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
+ * @param {number} arity The arity of `func`.
+ * @returns {Function} Returns the new wrapped function.
+ */
+function createCurry(func, bitmask, arity) {
+  var Ctor = createCtor(func);
+
+  function wrapper() {
+    var length = arguments.length,
+        args = Array(length),
+        index = length,
+        placeholder = getHolder(wrapper);
+
+    while (index--) {
+      args[index] = arguments[index];
+    }
+    var holders = (length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder)
+      ? []
+      : replaceHolders(args, placeholder);
+
+    length -= holders.length;
+    if (length < arity) {
+      return createRecurry(
+        func, bitmask, createHybrid, wrapper.placeholder, undefined,
+        args, holders, undefined, undefined, arity - length);
+    }
+    var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
+    return apply(fn, this, args);
+  }
+  return wrapper;
+}
+
+module.exports = createCurry;