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/keyBy.mjs

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+import { keyBy as keyBy$1 } from "../../array/keyBy.mjs";
+//#region src/fp/array/keyBy.ts
+/**
+* Creates a function that indexes values by a derived key.
+*
+* The key selector receives each value, index, and full input array. When multiple values
+* produce the same key, the last value wins, matching the main {@link keyBy} behavior.
+*
+* @template T - The type of elements in the array.
+* @template K - The property-key type produced by the selector.
+* @param getKey - Called with each value, index, and array to produce an object key.
+* @returns A function that maps a readonly array to an object keyed by the derived keys.
+*
+* @example
+* import { keyBy, pipe } from 'es-toolkit/fp';
+*
+* pipe([{ id: 'a', value: 1 }, { id: 'b', value: 2 }], keyBy(item => item.id));
+* // => { a: { id: 'a', value: 1 }, b: { id: 'b', value: 2 } }
+*/
+function keyBy(getKey) {
+	return function(array) {
+		return keyBy$1(array, getKey);
+	};
+}
+//#endregion
+export { keyBy };