Setup wizard warning UX and initial model-load behavior are clearer and less error-prone.
Onboarding security UX refresh
The setup wizard improves first-run clarity with:
- a single, more scannable warning-banner section
- section headings and checklist-style guidance
- a loading spinner during initial model catalog fetch
- clearer provider key prompt placeholders
The goal is to remove "blank/waiting" confusion and make security guidance harder to miss.