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/set/find.mjs

@@ -0,0 +1,27 @@
+//#region src/set/find.ts
+/**
+* Finds the first element in a Set for which the predicate function returns true.
+*
+* This function iterates through the elements of the Set and returns the first
+* element for which the predicate function returns true. If no element satisfies the predicate,
+* it returns undefined.
+*
+* @template T - The type of elements in the Set.
+* @param set - The Set to search.
+* @param doesMatch - A predicate function that tests each element.
+* @returns The first element that satisfies the predicate, or undefined if none found.
+*
+* @example
+* const set = new Set([
+*   { name: 'apple', quantity: 10 },
+*   { name: 'banana', quantity: 5 },
+*   { name: 'grape', quantity: 15 }
+* ]);
+* const result = find(set, (value) => value.quantity > 10);
+* // result will be: { name: 'grape', quantity: 15 }
+*/
+function find(set, doesMatch) {
+	for (const value of set) if (doesMatch(value, value, set)) return value;
+}
+//#endregion
+export { find };