initializeUser — Auth Trigger #

An event-triggered backend function that seeds new users with a default setup in the prod Firestore database.

Behavior #

• Trigger: auth.user().onCreate
• Creates/merges users/{uid} with profile and lastLogin
• Creates users/{uid}/workflows/workflow-1 with a default workflow
• Initializes users/{uid}/config/concurrency (defaults: maxConcurrent=3)

Region and runtime #

• Region: us-central1
• Runtime: Node.js 20 (emulator parity required)

Parity requirements #

• Emulator must mirror production: schema, rules, paths, and side effects
• Frontend relies on workflow-1 presence for first-time load