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/array/slice.mjs

@@ -0,0 +1,40 @@
+import { isArrayLike } from "../predicate/isArrayLike.mjs";
+import { toInteger } from "../util/toInteger.mjs";
+import { isIterateeCall } from "../_internal/isIterateeCall.mjs";
+//#region src/compat/array/slice.ts
+/**
+* Create a slice of `array` from `start` up to, but not including, `end`.
+*
+* It does not return a dense array for sparse arrays unlike the native `Array.prototype.slice`.
+*
+* @template T - The type of the array elements.
+* @param array - The array to slice.
+* @param [start=0] - The start position.
+* @param [end=array.length] - The end position.
+* @returns Returns the slice of `array`.
+*
+* @example
+* slice([1, 2, 3], 1, 2); // => [2]
+* slice(new Array(3)); // => [undefined, undefined, undefined]
+*/
+function slice(array, start, end) {
+	if (!isArrayLike(array)) return [];
+	const length = array.length;
+	if (end === void 0) end = length;
+	else if (typeof end !== "number" && isIterateeCall(array, start, end)) {
+		start = 0;
+		end = length;
+	}
+	start = toInteger(start);
+	end = toInteger(end);
+	if (start < 0) start = Math.max(length + start, 0);
+	else start = Math.min(start, length);
+	if (end < 0) end = Math.max(length + end, 0);
+	else end = Math.min(end, length);
+	const resultLength = Math.max(end - start, 0);
+	const result = new Array(resultLength);
+	for (let i = 0; i < resultLength; ++i) result[i] = array[start + i];
+	return result;
+}
+//#endregion
+export { slice };