A blank page and a green test: the bug an agent can't see

Using @relax.js/core with a coding agent reveals a critical issue regarding silent failures. When a template engine encounters a typo like {{user.naem}}, it renders an empty string to prevent browser crashes. While beneficial for users, this is problematic for agents. The agent writes the component and test, but because the test passes on a blank element, the agent remains unaware of the error, creating a bug that makes no noise during execution.