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/resolve/package.json

@@ -0,0 +1,75 @@
+{
+	"name": "resolve",
+	"description": "resolve like require.resolve() on behalf of files asynchronously and synchronously",
+	"version": "1.22.11",
+	"repository": {
+		"type": "git",
+		"url": "ssh://github.com/browserify/resolve.git"
+	},
+	"bin": {
+		"resolve": "./bin/resolve"
+	},
+	"main": "index.js",
+	"keywords": [
+		"resolve",
+		"require",
+		"node",
+		"module"
+	],
+	"scripts": {
+		"prepack": "npmignore --auto --commentLines=autogenerated && cp node_modules/is-core-module/core.json ./lib/ ||:",
+		"prepublishOnly": "safe-publish-latest",
+		"prepublish": "not-in-publish || npm run prepublishOnly",
+		"prelint": "eclint check $(git ls-files | xargs find 2> /dev/null | grep -vE 'node_modules|\\.git')",
+		"lint": "eslint --ext=js,mjs --no-eslintrc -c .eslintrc . 'bin/**'",
+		"pretests-only": "cd ./test/resolver/nested_symlinks && node mylib/sync && node mylib/async",
+		"tests-only": "tape test/*.js",
+		"pretest": "npm run lint",
+		"test": "npm run --silent tests-only",
+		"posttest": "npm run test:multirepo && npx npm@'>= 10.2' audit --production",
+		"test:multirepo": "cd ./test/resolver/multirepo && npm install && npm test"
+	},
+	"devDependencies": {
+		"@ljharb/eslint-config": "^21.2.0",
+		"array.prototype.map": "^1.0.8",
+		"copy-dir": "^1.3.0",
+		"eclint": "^2.8.1",
+		"eslint": "=8.8.0",
+		"in-publish": "^2.0.1",
+		"mkdirp": "^0.5.5",
+		"mv": "^2.1.1",
+		"npmignore": "^0.3.1",
+		"object-keys": "^1.1.1",
+		"rimraf": "^2.7.1",
+		"safe-publish-latest": "^2.0.0",
+		"semver": "^6.3.1",
+		"tap": "0.4.13",
+		"tape": "^5.9.0",
+		"tmp": "^0.0.31"
+	},
+	"license": "MIT",
+	"author": {
+		"name": "James Halliday",
+		"email": "mail@substack.net",
+		"url": "http://substack.net"
+	},
+	"funding": {
+		"url": "https://github.com/sponsors/ljharb"
+	},
+	"dependencies": {
+		"is-core-module": "^2.16.1",
+		"path-parse": "^1.0.7",
+		"supports-preserve-symlinks-flag": "^1.0.0"
+	},
+	"publishConfig": {
+		"ignore": [
+			".github/workflows",
+			"appveyor.yml",
+			"test/resolver/malformed_package_json",
+			"test/list-exports"
+		]
+	},
+	"engines": {
+		"node": ">= 0.4"
+	}
+}