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/fp/array/partition.d.mts

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+//#region src/fp/array/partition.d.ts
+/**
+ * Creates a function that splits an array with a type-guard predicate.
+ *
+ * Values for which the predicate returns true are placed in the first array and
+ * narrowed to U. The remaining values are placed in the second array as Exclude<T, U>.
+ *
+ * @template T - The type of elements in the array.
+ * @template U - The narrowed element type accepted by the type guard.
+ * @param predicate - Type guard called with each value, index, and array.
+ * @returns A function that maps a readonly array to truthy and falsy partitions.
+ *
+ * @example
+ * import { partition, pipe } from 'es-toolkit/fp';
+ *
+ * const isString = (value: string | number): value is string => typeof value === 'string';
+ * pipe([1, 'a', 2, 'b'], partition(isString));
+ * // => [['a', 'b'], [1, 2]]
+ */
+declare function partition<T, U extends T>(predicate: (value: T, index: number, array: readonly T[]) => value is U): (array: readonly T[]) => [truthy: U[], falsy: Array<Exclude<T, U>>];
+/**
+ * Creates a function that splits an array by a predicate.
+ *
+ * Values for which the predicate returns true are placed in the first array; all
+ * other values are placed in the second array.
+ *
+ * @template T - The type of elements in the array.
+ * @param predicate - Predicate called with each value, index, and array.
+ * @returns A function that maps a readonly array to truthy and falsy partitions.
+ *
+ * @example
+ * import { partition, pipe } from 'es-toolkit/fp';
+ *
+ * pipe([1, 2, 3, 4], partition(value => value % 2 === 0));
+ * // => [[2, 4], [1, 3]]
+ */
+declare function partition<T>(predicate: (value: T, index: number, array: readonly T[]) => boolean): (array: readonly T[]) => [truthy: T[], falsy: T[]];
+//#endregion
+export { partition };