Implements GET /api/profile and PUT /api/profile endpoints with validation of HR zones (must be contiguous, non-overlapping, 0-100%). Also updates profile migration to use correct HR zone defaults (0-20, 20-40, etc.) that match validation requirements. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
1.8 KiB
1.8 KiB