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/map/findKey.js

@@ -0,0 +1,33 @@
+//#region src/map/findKey.ts
+/**
+* Finds the first key in a Map for which the predicate function returns true.
+*
+* This function iterates through the entries of the Map and returns the key of the first
+* entry for which the predicate function returns true. If no entry satisfies the predicate,
+* it returns undefined.
+*
+* @template K - The type of keys in the Map.
+* @template V - The type of values in the Map.
+* @param map - The Map to search.
+* @param doesMatch - A predicate function that tests each entry.
+* @returns The key of the first entry that satisfies the predicate, or undefined if none found.
+*
+* @example
+* const map = new Map([
+*   ['apple', { color: 'red', quantity: 10 }],
+*   ['banana', { color: 'yellow', quantity: 5 }],
+*   ['grape', { color: 'purple', quantity: 15 }]
+* ]);
+* const result = findKey(map, (value) => value.quantity > 10);
+* // result will be: 'grape'
+*/
+function findKey(map, doesMatch) {
+	let result = void 0;
+	for (const [key, value] of map) if (doesMatch(value, key, map)) {
+		result = key;
+		break;
+	}
+	return result;
+}
+//#endregion
+exports.findKey = findKey;