feat: Complete character system, animated login, WebSocket sync

Character System:
- Inventory system with 5,482 equipment items
- Feats tab with categories and details
- Actions tab with 99 PF2e actions
- Item detail modal with equipment info
- Feat detail modal with descriptions
- Edit character modal with image cropping

Auth & UI:
- Animated login screen with splash → form transition
- Letter-by-letter "DIMENSION 47" animation
- Starfield background with floating orbs
- Logo tap glow effect
- "Remember me" functionality (localStorage/sessionStorage)

Real-time Sync:
- WebSocket gateway for character updates
- Live sync for HP, conditions, inventory, equipment status, money, level

Database:
- Added credits field to characters
- Added custom fields for items
- Added feat fields and relations
- Included full database backup

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

server/.env.example

@@ -15,7 +15,7 @@ NODE_ENV=development
 CORS_ORIGINS="http://localhost:3000,http://localhost:5173"
 
 # Claude API (for translations)
-CLAUDE_API_KEY=""
+ANTHROPIC_API_KEY=""
 
 # File Upload
 UPLOAD_DIR="./uploads"