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/object/invertBy.d.mts

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+import { ValueIteratee } from "../_internal/ValueIteratee.mjs";
+
+//#region src/compat/object/invertBy.d.ts
+/**
+ * Creates a new object that reverses the keys and values of the given object, similar to the invert.
+ * The values of the new object are arrays of keys that correspond to the value returned by the `iteratee` function.
+ *
+ * @param object - The object to iterate over
+ * @param [iteratee] - Optional function to transform values into keys
+ * @returns An object with transformed values as keys and arrays of original keys as values
+ *
+ * @example
+ * const obj = { a: 1, b: 2, c: 1 };
+ * invertBy(obj); // => { '1': ['a', 'c'], '2': ['b'] }
+ *
+ * @example
+ * const obj = { a: 1, b: 2, c: 1 };
+ * invertBy(obj, value => `group${value}`); // => { 'group1': ['a', 'c'], 'group2': ['b'] }
+ */
+declare function invertBy<T>(object: Record<string, T> | Record<number, T> | null | undefined, interatee?: ValueIteratee<T>): Record<string, string[]>;
+/**
+ * Creates a new object that reverses the keys and values of the given object, similar to the invert.
+ * The values of the new object are arrays of keys that correspond to the value returned by the `iteratee` function.
+ *
+ * @param object - The object to iterate over
+ * @param [iteratee] - Optional function to transform values into keys
+ * @returns An object with transformed values as keys and arrays of original keys as values
+ *
+ * @example
+ * const obj = { foo: { id: 1 }, bar: { id: 2 }, baz: { id: 1 } };
+ * invertBy(obj, value => String(value.id)); // => { '1': ['foo', 'baz'], '2': ['bar'] }
+ */
+declare function invertBy<T extends object>(object: T | null | undefined, interatee?: ValueIteratee<T[keyof T]>): Record<string, string[]>;
+//#endregion
+export { invertBy };