T3 Code Nightly 0.0.28-nightly.20260610.520 (0b40ea62e12e)

What's Changed

• Composer polish: focus ring, send/stop buttons, command menu, context meter, answer panel by @juliusmarminge in #3018
• Extract changed files card with compact aligned diff stats by @juliusmarminge in #3023

Full Changelog: v0.0.28-nightly.20260610.519...v0.0.28-nightly.20260610.520