- SessionFeedbackController used CONCAT(first_name_ar, last_name_ar) but
  coaches table has full_name_ar — causes 500 on feedback pages
- Add missing feedback_coach_summary.php view (controller referenced it)
- Enhance smoke_test.php with better error extraction and Claude-pasteable output
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>