lukasandClaude Opus 5
31edd4015e
`_teach` signalled failure by negating the count taught so far. That works for every case but the one that matters: when the FIRST message is refused nothing has been taught yet, and `-0` is `0` — not negative. The caller's `< 0` test then read a total engine outage as a clean run of zero, recorded `_bootstrapped` for the account, and the hourly sweep skipped it from then on. The account most in need of a warm start was the one guaranteed never to get one. Which is precisely what happened alongside the missing controller password: every learn was refused 401, and each account was quietly retired on its first sweep. Return None for "the engine stopped accepting these" so failure cannot be confused with a count, and decline to mark an account whose samples were all unreadable. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_018SqJYt7jD7oUEkoY68sBZo