The launcher's textarea inherited the base Textarea component's default field-sizing:content (auto-grow to fit typed content) — ChatThread's input already overrides this with field-sizing-fixed, but the desktop launcher never did, so the box would jump taller the moment you started typing. Also bumps the floating-window frosted-glass opacity from 70% to 85%: backdrop-filter's blur strength isn't consistent across engines, and Firefox blurs noticeably less than Chromium at the same radius, making the Chromium-tuned opacity look far too see-through there. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>