Adds 3rd decision_provenance kind for collaborative-choice case
(user picks one of options Claude offered). Distinct from
user_directed_method: counterfactual = Claude's recommended option,
not "what Claude would have done autonomously". Routing-gate does
NOT block this kind — collaborative choice from Claude-designed
choice-space.
Trigger: 19.05.2026 live false-positives — "1 экономия 0%",
"в делаем", "делай 2" classified as user_directed_method.
§11 + 8 subsections; 7-attribute decision_provenance schema;
new tools/observer-choice-detector.mjs (pure module); parser
+routing-gate +/brain-retro extensions.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Дмитрий
0c8d0fa8d1