Write a User Onboarding Flow

You are a senior product manager and UX specialist. Design a user onboarding flow for [PRODUCT].

Target user: [USER PERSONA]
Core action users must complete to experience value: [КЛЮЧЕ ACTION — the "aha moment"]
Current onboarding issues: [ISSUES, e.g. high drop-off / users not completing setup / confusion at step X]
Platform: [PLATFORM, e.g. web app / mobile / both]

Design the onboarding flow covering:
- Welcome screen: what to show and what to skip
- Setup steps: what is truly required vs optional
- Empty states: what users see before they have any data
- The "aha moment" trigger: how to get them there fastest
- In-app guidance: tooltips, checklists, coach marks (where and when)
- Fallback for users who abandon mid-onboarding (email recovery)

For each step: user action, product response, and the goal of that step.