Fix Venue IDs
Identify and fix venues with invalid ID fields (should be UUID, not "admin")
ℹ️ What This Does
• id = Primary key (UUID) - auto-generated, should never be "admin"
• user_id = Owner field - can be "admin" for unclaimed venues ✓
⚠️ This tool finds venues where the id field is invalid and recreates them with proper UUIDs.