Your coding agent is not lazy. The work-selection mechanism is biased.

Anyone who has tried to ship a full multi-page app with a coding agent has probably hit this. The agent edits, tests, and polishes the same 20 surfaces over and over while the other 80 stay untouched. It looks productive because the active surfaces show motion. The inactive surfaces are not failing loudly, because they are not being visited. The system confuses absence of evidence with evidence of completion. I spent a while convinced this was a context length problem, then a model capability problem, then a prompting problem. None of those fixed it.