Header:
- Remove Research button + modal (skill fires reliably from normal chat)
- Move Summarize-as-Note into a header kebab (disabled until the
conversation has messages)
Left sidebar:
- Full-width "+ New Chat" primary button
- Search input filters conversations by title (case-insensitive
substring) with a "no matches" empty state
- Move Select into a sidebar kebab next to search
Shared .btn-kebab + .kebab-menu styles give future conv-level actions
a home. Document mousedown + Escape dismiss both kebabs.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
bvandeusenandClaude Opus 4.6
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