feat: add GIF Mood Board workshop

- New workshop where each team member shares up to 5 GIFs with notes to express their weekly mood
- Per-user week rating (1-5 stars) visible next to each member's section
- Masonry-style grid with adjustable column count (3/4/5) toggle
- Handwriting font (Caveat) for GIF notes
- Full real-time collaboration via SSE
- Clean migration (add_gif_mood_workshop) safe for production deploy
- DB backup via cp before each migration in docker-entrypoint

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

src/components/collaboration/BaseSessionLiveWrapper.tsx

@@ -7,7 +7,7 @@ import { ShareModal } from './ShareModal';
 import type { ShareRole } from '@prisma/client';
 import type { TeamWithMembers, Share } from '@/lib/share-utils';
 
-export type LiveApiPath = 'sessions' | 'motivators' | 'weather' | 'year-review' | 'weekly-checkin';
+export type LiveApiPath = 'sessions' | 'motivators' | 'weather' | 'year-review' | 'weekly-checkin' | 'gif-mood';
 
 interface ShareModalConfig {
   title: string;