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/array/isSubsetWith.mjs

@@ -0,0 +1,37 @@
+import { differenceWith } from "./differenceWith.mjs";
+//#region src/array/isSubsetWith.ts
+/**
+* Checks if the `subset` array is entirely contained within the `superset` array based on a custom equality function.
+*
+* This function takes two arrays and a custom comparison function. It returns a boolean indicating
+* whether all elements in the subset array are present in the superset array, as determined by the provided
+* custom equality function.
+*
+* @template T - The type of elements contained in the arrays.
+* @param superset - The array that may contain all elements of the subset.
+* @param subset - The array to check against the superset.
+* @param areItemsEqual - A function to determine if two items are equal.
+* @returns Returns `true` if all elements of the subset are present in the superset
+* according to the custom equality function, otherwise returns `false`.
+*
+* @example
+* ```typescript
+* const superset = [{ id: 1 }, { id: 2 }, { id: 3 }];
+* const subset = [{ id: 2 }, { id: 1 }];
+* const areItemsEqual = (a, b) => a.id === b.id;
+* isSubsetWith(superset, subset, areItemsEqual); // true
+* ```
+*
+* @example
+* ```typescript
+* const superset = [{ id: 1 }, { id: 2 }, { id: 3 }];
+* const subset = [{ id: 4 }];
+* const areItemsEqual = (a, b) => a.id === b.id;
+* isSubsetWith(superset, subset, areItemsEqual); // false
+* ```
+*/
+function isSubsetWith(superset, subset, areItemsEqual) {
+	return differenceWith(subset, superset, areItemsEqual).length === 0;
+}
+//#endregion
+export { isSubsetWith };