firebase-setup

1. Trigger Conditions

Invoke this skill when:

• Setting up Firebase in a web application (Auth, Firestore, or Storage)
• Writing Firestore queries, real-time listeners, or security rules
• Implementing Firebase Auth (sign-in flows, session management)
• Handling file uploads with Firebase Storage
• Debugging Firebase-specific bugs (listener leaks, offline behaviour, permission errors)

2. Prerequisites

• Firebase project created and config available
• Firebase SDK v9+ installed (modular imports)
• references/auth-patterns.md, references/firestore-patterns.md, references/storage-patterns.md, references/gotchas.md available

3. Steps