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/generator-function/.eslintrc

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+{
+	"root": true,
+
+	"extends": "@ljharb",
+
+	"overrides": [
+		{
+			"files": "./index.js",
+			"extends": "@ljharb/eslint-config/node/8"
+		},
+		{
+			"files": "./require.mjs",
+			"extends": "@ljharb/eslint-config/node/16",
+		},
+	],
+}

pwa/node_modules/generator-function/.github/FUNDING.yml

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+# These are supported funding model platforms
+
+github: [ljharb]
+patreon: # Replace with a single Patreon username
+open_collective: # Replace with a single Open Collective username
+ko_fi: # Replace with a single Ko-fi username
+tidelift: npm/generator-function
+community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
+liberapay: # Replace with a single Liberapay username
+issuehunt: # Replace with a single IssueHunt username
+otechie: # Replace with a single Otechie username
+custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']

pwa/node_modules/generator-function/.nycrc

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+{
+	"all": true,
+	"check-coverage": false,
+	"reporter": ["text-summary", "text", "html", "json"],
+	"exclude": [
+		"coverage",
+		"test"
+	]
+}

pwa/node_modules/generator-function/CHANGELOG.md

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+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [v2.0.1](https://github.com/TimothyGu/generator-function/compare/v2.0.0...v2.0.1) - 2025-09-30
+
+### Commits
+
+- [meta] fix repo URL [`f5d05f2`](https://github.com/TimothyGu/generator-function/commit/f5d05f278e1f0660c418bf0b867e0013873da48c)
+
+## [v2.0.0](https://github.com/TimothyGu/generator-function/compare/v1.0.0...v2.0.0) - 2025-09-29
+
+### Commits
+
+- Initial reimplementation, tests, readme, types [`e5940de`](https://github.com/TimothyGu/generator-function/commit/e5940de4328fc70ad27aa4bab4245f6c9ce62a44)
+- [meta] remove unused files [`460bbe9`](https://github.com/TimothyGu/generator-function/commit/460bbe9cc6c89f9fdab05a001dc924308124613b)
+- [Dev Deps] add missing peer dep [`b873c0d`](https://github.com/TimothyGu/generator-function/commit/b873c0dad8f38b08e2acc4bd5204a90dde0fe051)
+- [meta] fix FUNDING.yml [`9ae9d43`](https://github.com/TimothyGu/generator-function/commit/9ae9d432a0c06d698e1aeb20b1161ca8a08b3cbb)
+
+## v1.0.0 - 2015-10-10
+
+### Commits
+
+- Initial commit [`176e0cd`](https://github.com/TimothyGu/generator-function/commit/176e0cd3a5ebb004aa666c6eecbe5a968efbddf9)

pwa/node_modules/generator-function/LICENSE.md

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+Copyright (c) 2015 Tiancheng “Timothy” Gu
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

pwa/node_modules/generator-function/README.md

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+# generator-function <sup>[![Version Badge][npm-version-svg]][package-url]</sup>
+
+[![github actions][actions-image]][actions-url]
+[![coverage][codecov-image]][codecov-url]
+[![License][license-image]][license-url]
+[![Downloads][downloads-image]][downloads-url]
+
+[![npm badge][npm-badge-png]][package-url]
+
+A function that returns the normally hidden `GeneratorFunction` constructor, when available.
+
+## Getting started
+
+```sh
+npm install --save generator-function
+```
+
+## Usage/Examples
+
+```js
+const assert = require('assert');
+const GeneratorFunction = require('generator-function')();
+
+const fn = new GeneratorFunction('return 1');
+
+assert.equal(fn.toString(), 'function* anonymous(\n) {\nreturn 1\n}');
+
+const iterator = fn();
+
+assert.deepEqual(iterator.next(), { done: true, value: 1 });
+```
+
+## Tests
+
+Clone the repo, `npm install`, and run `npm test`
+
+[package-url]: https://npmjs.org/package/generator-function
+[npm-version-svg]: https://versionbadg.es/TimothyGu/generator-function.svg
+[deps-svg]: https://david-dm.org/TimothyGu/generator-function.svg
+[deps-url]: https://david-dm.org/TimothyGu/generator-function
+[dev-deps-svg]: https://david-dm.org/TimothyGu/generator-function/dev-status.svg
+[dev-deps-url]: https://david-dm.org/TimothyGu/generator-function#info=devDependencies
+[npm-badge-png]: https://nodei.co/npm/generator-function.png?downloads=true&stars=true
+[license-image]: https://img.shields.io/npm/l/generator-function.svg
+[license-url]: LICENSE
+[downloads-image]: https://img.shields.io/npm/dm/generator-function.svg
+[downloads-url]: https://npm-stat.com/charts.html?package=generator-function
+[codecov-image]: https://codecov.io/gh/TimothyGu/generator-function/branch/main/graphs/badge.svg
+[codecov-url]: https://app.codecov.io/gh/TimothyGu/generator-function/
+[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/TimothyGu/generator-function
+[actions-url]: https://github.com/TimothyGu/generator-function/actions

pwa/node_modules/generator-function/index.d.mts

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+import type getGeneratorFunction = require('./index.d.ts');
+
+export default getGeneratorFunction;

pwa/node_modules/generator-function/index.d.ts

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+declare function getGeneratorFunction(): GeneratorFunctionConstructor | false;
+
+export = getGeneratorFunction;

pwa/node_modules/generator-function/index.js

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+'use strict';
+
+// eslint-disable-next-line no-extra-parens, no-empty-function
+const cached = /** @type {GeneratorFunctionConstructor} */ (function* () {}.constructor);
+
+/** @type {import('.')} */
+module.exports = () => cached;
+

pwa/node_modules/generator-function/index.mjs

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+import getGeneratorFunction from './index.js';
+
+/** @type {import('./index.d.mts').default} */
+export default getGeneratorFunction;

pwa/node_modules/generator-function/legacy.js

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+'use strict';
+
+/** @type {GeneratorFunctionConstructor | false} */
+var cached;
+
+/** @type {import('./index.js')} */
+module.exports = function getGeneratorFunction() {
+	if (typeof cached === 'undefined') {
+		try {
+			// eslint-disable-next-line no-new-func
+			cached = Function('return function* () {}')().constructor;
+		} catch (e) {
+			cached = false;
+		}
+	}
+	return cached;
+};
+

pwa/node_modules/generator-function/package.json

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+{
+	"name": "generator-function",
+	"version": "2.0.1",
+	"description": "A function that returns the normally hidden `GeneratorFunction` constructor",
+	"main": "./legacy.js",
+	"jsnext:main": "./index.mjs",
+	"module": "./index.mjs",
+	"exports": {
+		".": [
+			{
+				"module-sync": "./require.mjs",
+				"import": "./index.mjs",
+				"default": "./index.js"
+			},
+			"./index.js"
+		],
+		"./package.json": "./package.json"
+	},
+	"sideEffects": false,
+	"scripts": {
+		"prepack": "npmignore --auto --commentLines=autogenerated",
+		"prepublish": "not-in-publish || npm run prepublishOnly",
+		"prepublishOnly": "safe-publish-latest",
+		"pretest": "npm run --silent lint",
+		"test": "npm run tests-only",
+		"posttest": "npx npm@\">=10.2\" audit --production",
+		"tests-only": "nyc tape 'test/**/*.js'",
+		"prelint": "evalmd README.md",
+		"lint": "eslint --ext=js,mjs .",
+		"postlint": "tsc && attw -P",
+		"version": "auto-changelog && git add CHANGELOG.md",
+		"postversion": "auto-changelog && git add CHANGELOG.md && git commit --no-edit --amend && git tag -f \"v$(node -e \"console.log(require('./package.json').version)\")\""
+	},
+	"repository": {
+		"type": "git",
+		"url": "git+https://github.com/TimothyGu/generator-function.git"
+	},
+	"keywords": [
+		"generator",
+		"function",
+		"native"
+	],
+	"author": "Jordan Harbamd <ljharb@gmail.com>",
+	"license": "MIT",
+	"bugs": {
+		"url": "https://github.com/TimothyGu/generator-function/issues"
+	},
+	"homepage": "https://github.com/TimothyGu/generator-function#readme",
+	"devDependencies": {
+		"@arethetypeswrong/cli": "^0.18.2",
+		"@ljharb/eslint-config": "^21.2.0",
+		"@ljharb/tsconfig": "^0.3.2",
+		"@types/semver": "^6.2.7",
+		"@types/tape": "^5.8.1",
+		"auto-changelog": "^2.5.0",
+		"encoding": "^0.1.13",
+		"eslint": "=8.8.0",
+		"evalmd": "^0.0.19",
+		"generator-function": "file:.",
+		"get-proto": "^1.0.1",
+		"in-publish": "^2.0.1",
+		"npmignore": "^0.3.1",
+		"nyc": "^10.3.2",
+		"safe-publish-latest": "^2.0.0",
+		"semver": "^6.3.1",
+		"tape": "^5.9.0",
+		"typescript": "next"
+	},
+	"engines": {
+		"node": ">= 0.4"
+	},
+	"auto-changelog": {
+		"output": "CHANGELOG.md",
+		"template": "keepachangelog",
+		"unreleased": false,
+		"commitLimit": false,
+		"backfillLimit": false,
+		"hideCredit": true
+	},
+	"publishConfig": {
+		"ignore": [
+			".github/workflows"
+		]
+	},
+	"testling": {
+		"files": "test/index.js"
+	}
+}

pwa/node_modules/generator-function/require.mjs

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+import getGeneratorFunction from './index.js';
+
+export default getGeneratorFunction;
+
+export { getGeneratorFunction as 'module.exports' };

pwa/node_modules/generator-function/test/index.js

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+'use strict';
+
+var test = require('tape');
+var getProto = require('get-proto');
+var semver = require('semver');
+
+var getGeneratorFunction = require('generator-function');
+
+test('getGeneratorFunction', function (t) {
+	var result = getGeneratorFunction();
+
+	/* eslint-env browser */
+	if (typeof window === 'undefined' && typeof process !== 'undefined') {
+		t.equal(
+			!!result,
+			semver.satisfies(process.version, '>= 1'),
+			'result is present or absent as expected for node ' + process.version
+		);
+	}
+
+	t.test('exists', { skip: !result }, function (st) {
+		if (result && getProto) { // TS can't infer `skip`, or that getProto definitely exists if GeneratorFunction exists
+			st.equal(typeof result, 'function', 'is a function');
+			st.equal(getProto(result), Function, 'extends Function');
+
+			var iterator = result('a', 'return a')(42);
+			st.deepEqual(iterator.next(), { value: 42, done: true }, 'returns a generator function which returns an iterator');
+		} else {
+			st.fail('should never get here');
+		}
+
+		st.end();
+	});
+
+	t.test('does not exist', { skip: !!result }, function (st) {
+		st.equal(result, false, 'is false');
+
+		st.end();
+	});
+
+	t.end();
+});

pwa/node_modules/generator-function/tsconfig.json

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+{
+	"extends": "@ljharb/tsconfig",
+	"compilerOptions": {
+		"target": "es2021",
+	},
+	"exclude": [
+		"coverage",
+	],
+}