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/es-toolkit/dist/compat/function/bindKey.d.ts

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+//#region src/compat/function/bindKey.d.ts
+/**
+ * Creates a function that invokes the method at `object[key]` with `partialArgs` prepended to the arguments it receives.
+ *
+ * This method differs from `bind` by allowing bound functions to reference methods that may be redefined or don't yet exist.
+ *
+ * The `bindKey.placeholder` value, which defaults to a `symbol`, may be used as a placeholder for partially applied arguments.
+ *
+ * @template T - The type of the object to bind.
+ * @template K - The type of the key to bind.
+ * @param object - The object to invoke the method on.
+ * @param key - The key of the method.
+ * @param partialArgs - The arguments to be partially applied.
+ * @returns Returns the new bound function.
+ *
+ * @example
+ * const object = {
+ *   user: 'fred',
+ *   greet: function (greeting, punctuation) {
+ *     return greeting + ' ' + this.user + punctuation;
+ *   },
+ * };
+ *
+ * let bound = bindKey(object, 'greet', 'hi');
+ * bound('!');
+ * // => 'hi fred!'
+ *
+ * object.greet = function (greeting, punctuation) {
+ *   return greeting + 'ya ' + this.user + punctuation;
+ * };
+ *
+ * bound('!');
+ * // => 'hiya fred!'
+ *
+ * // Bound with placeholders.
+ * bound = bindKey(object, 'greet', bindKey.placeholder, '!');
+ * bound('hi');
+ * // => 'hiya fred!'
+ */
+declare function bindKey(object: object, key: string, ...partialArgs: any[]): (...args: any[]) => any;
+declare namespace bindKey {
+  var placeholder: typeof bindKeyPlaceholder;
+}
+declare const bindKeyPlaceholder: unique symbol;
+//#endregion
+export { bindKey };