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/object/omit.mjs

@@ -0,0 +1,28 @@
+//#region src/object/omit.ts
+/**
+* Creates a new object with specified keys omitted.
+*
+* This function takes an object and an array of keys, and returns a new object that
+* excludes the properties corresponding to the specified keys.
+*
+* @template T - The type of object.
+* @template K - The type of keys in object.
+* @param obj - The object to omit keys from.
+* @param keys - An array of keys to be omitted from the object.
+* @returns A new object with the specified keys omitted.
+*
+* @example
+* const obj = { a: 1, b: 2, c: 3 };
+* const result = omit(obj, ['b', 'c']);
+* // result will be { a: 1 }
+*/
+function omit(obj, keys) {
+	const result = { ...obj };
+	for (let i = 0; i < keys.length; i++) {
+		const key = keys[i];
+		delete result[key];
+	}
+	return result;
+}
+//#endregion
+export { omit };