-- Local health-check engine settings (cron + state-machine thresholds).
-- NULL = inherit from process env (HEALTH_CHECK_CRON / HEALTH_*).
ALTER TABLE app_settings ADD COLUMN health_check_cron TEXT;
ALTER TABLE app_settings ADD COLUMN health_degraded_failures INTEGER;
ALTER TABLE app_settings ADD COLUMN health_down_failures INTEGER;
ALTER TABLE app_settings ADD COLUMN health_latency_warn_ms INTEGER;
ALTER TABLE app_settings ADD COLUMN health_success_recoveries INTEGER;