Proxy-basierte Aufruf-Spione für Server-Action-Integrationstests

export function createActionSpy(targetFn) {
  const calls = [];
 
  const spy = new Proxy(targetFn, {
    apply(target, thisArg, argArray) {
      const callRecord = { args: argArray, timestamp: Date.now() };
      calls.push(callRecord);
      return Reflect.apply(target, thisArg, argArray);
    }
  });
 
  return { spy, calls };
}