Container timeout and idle timeout both fire at 30min, racing the
graceful shutdown. The hard kill returns error status, rolling back
the message cursor even though output was already sent — causing
duplicate messages indefinitely.
- Grace period: hard timeout is now IDLE_TIMEOUT + 30s minimum
- Timeout after output resolves as success (idle cleanup, not failure)
- Don't roll back cursor if output was already sent to user
- Remove src/telegram.ts and config vars (added to PR #156 by mistake)
- Add typecheck step to CI workflow
- Add container-runner timeout behavior tests
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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