Health endpoint now returns JSON with version and service status instead of plain "OK". Updated BETA-PROGRESS.md: BUG-1 done, TASK-8 done (12/12 + code audit), FEATURE-4 at ~80%, overall at ~55%. Added session #5 log. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>