If proof is missing, the claim should shrink until it becomes true.
At the end of a build, memory becomes generous. The page loaded once, so the app works. The form accepted text once, so comments are complete. The build seemed fine, so verification happened. This is how small projects become slippery. Nobody means to exaggerate. They just forget to keep evidence close.
A build log fixes that. It records what changed, which files matter, which commands ran, what passed, what failed, and what remains risky. It lets the student say, "Here is what we know," instead of, "I think it worked." That difference is not cosmetic. It is professional.
Evidence can be simple. A passing build. A lint run. A browser screenshot. A list of routes visited. A note that a comment was tested by adding it, refreshing, and seeing it remain. These small receipts protect the next AI session from repeating work or trusting an imaginary state.
The strongest closeout is humble and specific. It does not claim production readiness if the app has no shared database. It does not claim accessibility perfection if only a basic pass was done. It says what was verified, what was deferred, and what would be required for the next gate. That is enough to move with confidence.