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/util/iteratee.d.mts

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+//#region src/compat/util/iteratee.d.ts
+/**
+ * Returns the provided function as-is when it is a function type.
+ *
+ * @template F - The function type
+ * @param func - The function to return
+ * @returns Returns the provided function unchanged
+ *
+ * @example
+ * const fn = (x: number) => x * 2;
+ * const iterateeFn = iteratee(fn);
+ * iterateeFn(4); // => 8
+ */
+declare function iteratee<F extends (...args: any[]) => any>(func: F): F;
+/**
+ * Creates an iteratee function based on the provided property key or object.
+ * If given a property key, returns a function that gets that property from objects.
+ * If given an object, returns a function that matches objects against the provided one.
+ *
+ * @param func - The value to convert to an iteratee
+ * @returns Returns the iteratee function
+ *
+ * @example
+ * // With property key
+ * const getLength = iteratee('length');
+ * getLength([1,2,3]); // => 3
+ *
+ * // With object
+ * const matchObj = iteratee({ x: 1, y: 2 });
+ * matchObj({ x: 1, y: 2, z: 3 }); // => true
+ */
+declare function iteratee(func: PropertyKey | object): (...args: any[]) => any;
+//#endregion
+export { iteratee };