Composer polish: focus ring, send/stop buttons, command menu, context meter, answer panel (#3018)

Co-authored-by: ss <ss@barekey.dev>
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
Co-authored-by: codex <codex@users.noreply.github.com>
a4757c2656Julius Marminge committed on 6/10/2026, 8:02:32 AM· committed by GitHubparent3efabdc
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