OpenAnalyst User Onboarding

Purpose

First-time users must complete this onboarding before accessing the main UI. The onboarding:

1. Feels like talking to a real accountability coach
2. Gathers essential information about the user
3. Saves structured data to MD files
4. Unlocks the full UI upon completion

Onboarding Flow

Phase 1: Introduction & Identity

Coach: "Hey! I'm your personal accountability coach. I'm here to help you
       crush your goals and build lasting habits. Before we dive in,
       let's get to know each other a bit. What should I call you?"

User: "Alex"