DuelSnap Backend API

Endpoints:

• /api/compat/v7/cardinfo — Card search (YGOProDeck-compatible)
• /api/compat/v7/archetypes — All archetypes
• /api/compat/v7/cardsets — All card sets
• /api/compat/v7/checkDBVer — Database version
• /api/compat/v7/randomcard — Random card
• /api/v1/images/:size/:cardId.jpg — Image proxy
• /api/internal/health — Health check