- Update USAGE_TRACKING.md with new tier limits (50, 200, 1000, unlimited) - Update AI_INTEGRATION.md with new tier limits - Add note that limits are loaded from config (ai_calls_per_day) - Document GET /api/v1/usage endpoint - Update examples to show is_unlimited field - Fix test examples with correct limit values 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>