Three coupled UX fixes for the analyst-onboarding flow:
1. Dashboard "Setup a new Claude Code" CTA was rendering admin paste
prompt for everyone (analysts couldn't actually execute the marketplace
plugin install / skills setup steps). render_agent_prompt_banner now
picks role based on user.is_admin — analysts get the analyst flow.
2. /setup default role changed from admin to analyst. Most visitors are
analysts; admin layout is opt-in via the admin tile or ?role=admin.
3. Admin tile is admin-only on the role-tile nav. Non-admins see only
the analyst tile. Server-side: non-admin requesting ?role=admin is
silently downgraded to analyst (otherwise they'd see admin paste
prompt despite no tile).
Tests:
- New: test_setup_page_admin_tile_hidden_for_non_admin (anonymous client
can't see "Admin CLI" or role=admin link)
- New: test_setup_page_admin_role_downgraded_for_non_admin (anonymous
?role=admin → analyst layout, no marketplace step in clipboard)
- New: test_install_preview_default_role_is_analyst (admin signing in to
bare /setup gets analyst clipboard by default)
- Renamed: test_setup_page_default_role_is_admin → ..._is_analyst
- Updated: test_setup_page_admin_clipboard_renders_admin_layout uses
FastAPI dependency_overrides to inject admin user (admin layout is
now admin-gated)
- Updated: test_install_preview_visible_for_signed_in_user explicitly
passes ?role=admin to exercise admin layout