Owner round 2 (2026-10-05), Slice F:
- USER TEXT: the right-aligned bubble is gone. User messages are
full-width document rows — muted 'You' label, muted quote rail,
full-opacity text. Learner words are content, not a chat-app tell.
- USER THINKING (everywhere): arrives COLLAPSED as a trigger row in the
exact register of the agent's reasoning rows (muted label + chevron +
hover affordance); expanding opens the quote block — rail, 50%
opacity, italics. The inner-voice signature. The ThinkingBlock loses
its shell/border: pure document material.
- QUIZ CARDS: the answer's thinking is the SAME collapsible row, same
placement, just inside the container; the explanation drops to 50%
opacity (upright — italics stays the thinking signature).
- AGENT'S THINKING: the duration bookkeeping is gone (it was live-turn
state that died to 'a few seconds' on remount anyway) — the settled
row reads static 'Agent's thinking', pairing with 'Your thinking'.
Spinner + shimmer stay the working signal while streaming.
- Glance law: user thinking = rail + 50% italic; agent thinking = no
rail; user text = upright, full opacity, 'You' label.
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