Propose reproducing bugs in unit tests as a discriminating experiment

[wtmoose]

Friction

The agent narrowed a bug to unexpected framework behavior but continued speculating about fixes rather than proposing a unit test to reproduce the issue. The human had to explicitly suggest writing test variations. Once unit tests existed, exploration and validation became dramatically faster.

Suggestion

Add guidance to the debugging guide: when narrowing the possibility space, the agent should consider whether the suspected behavior can be reproduced in a unit test. If so, the agent should propose writing a reproducing test as a discriminating experiment. A reproducing unit test provides fast, repeatable evidence, accelerates both exploration (trying variations) and validation (confirming the fix), and becomes a valuable regression test.

Affected files

Guides/Core/debugging-guide.md