- New 'discuss' profile: creative Q&A and idea discussion, temp=1.0,
  planning phase 3 only, tools: web_search/view, scratchpad, reflect,
  memory, image_view, todo
- WelcomeScreen mobile: 2-column grid for profile cards, compact logo
  (row layout with subtitle on second line), reduced padding/gaps

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>