onboard

# Guided Onboarding Walk a new developer through the codebase in structured stages. ## Stages | Stage | Focus | Categories | Difficulty | |-------|-------|------------|------------| | 1 | Big picture | architecture, data_flow | 1-2 | | 2 | Core domain | business_logic | 2-3 | | 3 | Interfaces | api_contract, data_flow | 3 | | 4 | Patterns | pattern, dependency | 3-4 | | 5 | Hardening | error_handling, business_logic | 4-5 | ## Steps 1. Load onboarding progress 2. Show current stage and progress summary 3. Present 5 challenges from current stage 4. Enable hints on first attempt 5. Track mastery (correct twice = mastered) 6. Check advancement (80% across 10+ challenges) 7. Report progress ## Graduation After stage 5, the developer enters the regular gauntlet. Answer history carries over.