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5 tasks TDD plan with explicit code per step. Task 1 creates observer-choice-detector.mjs pure module (23 tests). Task 2 wires into transcript-parser. Task 3 extends routingGateDecision (no-block). Task 4 extends brain-retro factor matrix. Task 5 normative sync (Pravila §16.2 + CLAUDE.md §3.6 + spec cross-ref). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>