Live-session bug: the chat model called record_hand but filled log_hand's
granular fields (position/hole_cards/board/streets), leaving `shorthand` empty →
the parser got nothing → "I couldn't parse that hand". The fragment/tool choice
was correct; only the argument shape was wrong.
- _record_hand now reconstructs a parseable description from the granular fields
when `shorthand` is empty (_shorthand_from_fields), so it works regardless of
which schema the model uses. Explicit `shorthand` still passes verbatim.
- Sharpened record_hand's spec: pass the ENTIRE hand as ONE `shorthand` string,
not split fields (that's log_hand); shorthand is required + non-empty.
4 tests. Full suite 210 green.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
