Add settings page for managing forecasting API key and URL via UI

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/node_modules/workbox-build/build/lib/get-string-details.js

@@ -0,0 +1,19 @@
+"use strict";
+/*
+  Copyright 2018 Google LLC
+
+  Use of this source code is governed by an MIT-style
+  license that can be found in the LICENSE file or at
+  https://opensource.org/licenses/MIT.
+*/
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getStringDetails = void 0;
+const get_string_hash_1 = require("./get-string-hash");
+function getStringDetails(url, str) {
+    return {
+        file: url,
+        hash: (0, get_string_hash_1.getStringHash)(str),
+        size: str.length,
+    };
+}
+exports.getStringDetails = getStringDetails;