## Coding Agents Keep Shipping Silent Failures — Here Is How to Catch Them How to verify your app aligns with your intent without ever reading a line of generated code. ## Introduction Vibe coding lets anyone build a web app with nothing but a natural language prompt. You ask an LLM agent for what you want, and you get a polished interface in seconds. The promise is that you'll never have to look at the code again, yet this is far from reality. In reality, our first prompt results in a great UI, but asking for subsequent modifications starts breaking the app. ## Silent Behavioral Failures A…