When Brian narrates a hand he watched between OTHER players, the parser was still
filling hero_pos/hero_cards — pinning someone else's cards, position, and result
to him. Now:
- parser prompt adds hero_involved detection: fill hero_pos/hero_cards ONLY if he
was actually in the hand; a hand he only watched has hero_involved=false and
null hero fields, with the other players recorded normally.
- normalize_structured enforces it as a safety net (hero_involved=false → null
hero_pos/cards, hero_net) even if the model slips.
- record_hand tool confirms an observed hand as "not yours" instead of implying
it was his.
2 tests. Restarting web for the live session.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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