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/prisma/migrations/20260119111209_add_item_custom_fields/migration.sql

@@ -0,0 +1,8 @@
+-- AlterTable
+ALTER TABLE "CharacterItem" ADD COLUMN     "alias" TEXT,
+ADD COLUMN     "customDamage" TEXT,
+ADD COLUMN     "customDamageType" TEXT,
+ADD COLUMN     "customHands" TEXT,
+ADD COLUMN     "customName" TEXT,
+ADD COLUMN     "customRange" TEXT,
+ADD COLUMN     "customTraits" TEXT[];