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§6 drifted from the implemented brain-retro analyzer after Phase 1.2/1.3: - factor matrix now lists 9 axes (session_turn + parallel_session were captured in the episode schema §3 but missing from the §6 matrix); - outcome inference documents 'blocked' (error events > retry events) and notes 'failure' as deferred to the phase-2 agent-judge. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>