Extension to Functions Codebase & npm Package Migration

Overview

Migrates a Firebase Extension into either:

1. A local Cloud Functions codebase (functions/src/ for app integration).
2. A publishable npm package (reusable open-source package exporting V2 functions).

Leverages native Cloud Functions features (declarative IAM, Parameterized Config, SDK Lifecycle Hooks) and modernizes 1st Gen triggers to 2nd Gen using the Destructuring Compatibility Shim.

Target Migration Workflows

• Target A: Local Functions Codebase (End-User App Integration)