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/compat/predicate/isObjectLike.mjs

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+//#region src/compat/predicate/isObjectLike.ts
+/**
+* Checks if the given value is object-like.
+*
+* A value is object-like if its type is object and it is not null.
+*
+* This function can also serve as a type predicate in TypeScript, narrowing the type of the argument to an object-like value.
+*
+* @param value - The value to test if it is an object-like.
+* @returns `true` if the value is an object-like, `false` otherwise.
+*
+* @example
+* const value1 = { a: 1 };
+* const value2 = [1, 2, 3];
+* const value3 = 'abc';
+* const value4 = () => {};
+* const value5 = null;
+*
+* console.log(isObjectLike(value1)); // true
+* console.log(isObjectLike(value2)); // true
+* console.log(isObjectLike(value3)); // false
+* console.log(isObjectLike(value4)); // false
+* console.log(isObjectLike(value5)); // false
+*/
+function isObjectLike(value) {
+	return typeof value === "object" && value !== null;
+}
+//#endregion
+export { isObjectLike };