8fde6a3b50
ремонт: prevent recurrence of 29.05 disk-full incident GitHub Actions cron */30 min: ssh + df -h /. Threshold 85% → warning, 95% → critical (job fails, GitHub notifications fire). Output: GITHUB_STEP_SUMMARY with size/used/avail + likely causes from incident. Future: extend sql-runner whitelist для INSERT into incidents_log (post-Б-1 Sentry/Telegram bot integration).