- Remove authLoading spinner gate — app renders immediately for all visitors
- Expand isPublicRoute to include /, /global-items/*, /setups/*, /users/, /login
- Replace hard window.location.href redirect with soft navigate() after auth resolves
- Remove onboarding loading spinner — pass isAuthenticated as enabled to guard query
- Add AuthPromptModal to root JSX for global availability
- Guard Add to Collection and Add to Thread buttons with isAuthenticated check
- Rework setup detail page to use usePublicSetup for anonymous visitors
- Wrap all write action UI (Add Items, Delete, Public toggle, remove/classify) in isAuthenticated guards
- Replace handleAddStub with handleAdd dispatching to correct modal by mode
- Global item detail page: add both "Add to Collection" and "Add to Thread" buttons
- Remove console.log stub from detail page
- Import useUIStore in both components
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Add image placeholder (package icon) when no imageUrl exists
- Add 'Add to Collection' button stub between specs and description
- Button styled per D-10, logs to console (actual flow wired in Phase 22)
- Consistent layout with item detail page
