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Note 3: agent output format leaked internal-thinking preamble before the structured report block — Iron Law should forbid preamble. Note 4: Boss-requested behaviour change for impending-BLOCK paths — on miss, agent attempts to write missing GREEN test (test code only, never src/) before falling to BLOCK; requires tool + Iron Law update. Both notes are for the future skillsystem-postmortem entry; out of gc.1 scope.