Serverless User Creation Test

🔧 Client-Side Approach (Old)

Problem: Creates authentication interference

• Creates Firebase Auth user in browser
• Changes current user's auth state
• Causes admin to be logged out
• Permission issues with Firestore

🚀 Serverless Approach (New)

Solution: No authentication interference

• Creates user on Firebase servers
• Uses Admin SDK with full permissions
• No auth state changes in browser
• Better security and error handling