SKILL: Firebase Platform Master Guide

Consolidated reference for AngularFire SDK and Firebase Data Connect (GQL + PostgreSQL).

🔥 1. AngularFire Core (SDK)

Real-time Database & Firestore

• Reactive Pattern: Use collectionData, docData and convert to signals using toSignal().
• Dependency Injection: Use inject(Firestore), inject(Auth), etc.
• Security: Security rules are the primary defense. Never trust the client.

Authentication

• State management: Track user status in an AuthStore.
• Guards: Use functional canActivate guards with Auth service.