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Newest per signal, stale after 5 s or when only the retained copy is known. Bus or mock, never both; hello says which (source bus|mock|none). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01DDwfd6Ki8UfG4hK6W5YpJz