fix(ai): restore global reasoning toggle accidentally reverted by d90847bb
Commit 09f9e446 replaced per-message expandedReasoning (Set<number>) with
a global reasoningExpanded boolean ref, defaulting to collapsed so all
messages share the same toggle state. This avoided the flip-flop where
reasoning auto-expanded during streaming and collapsed afterward.
Commit d90847bb (SQL file references) inadvertently reverted this when
resolving merge conflicts during its large template restructure.
Changes:
- Replace expandedReasoning (Set<number>) with reasoningExpanded (ref(false))
- Replace per-index toggleReasoning(i) with global toggleReasoning()
- Template uses reasoningExpanded instead of expandedReasoning.has(i) || msg.isThinking
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Abeautifulsnow
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