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/_internal/isEqualsSameValueZero.d.ts

@@ -0,0 +1,17 @@
+//#region src/_internal/isEqualsSameValueZero.d.ts
+/**
+ * Performs a `SameValueZero` comparison between two values to determine if they are equivalent.
+ *
+ * @param {any} value - The value to compare.
+ * @param {any} other - The other value to compare.
+ * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
+ *
+ * @example
+ * eq(1, 1); // true
+ * eq(0, -0); // true
+ * eq(NaN, NaN); // true
+ * eq('a', Object('a')); // false
+ */
+declare function isEqualsSameValueZero(value: any, other: any): boolean;
+//#endregion
+export { isEqualsSameValueZero };