Monitors echo/log audit pass

Status conclusions and clean-check summaries → echo: backup_verify (pre-flight
passed, all files match), bandwidth_monitor (logged transfer entry),
cert_monitor/smart_health (all healthy), system_tuning_monitor (snapshot written),
weekly_health_digest (smart no-findings exit, digest sent), zfs_memory_snapshot
(all pools ONLINE, all checks within thresholds). Manual-Monitors.md: added
Output Tiers section.

Monitors/bandwidth_monitor.sh

@@ -188,7 +188,7 @@ if [[ "$LOG_TRANSFER_MODE" == true ]]; then
     # Append entry — format: date|time|profile|duration|status|bytes|warn_flag
     echo "${TODAY}|${NOW}|${TRANSFER_PROFILE}|${TRANSFER_DURATION}|${TRANSFER_STATUS}|${TRANSFER_BYTES}|${WARN_FLAG}" \
         >> "$BANDWIDTH_LOG"
-    log "$ICON_BANDWIDTH Logged: $TRANSFER_PROFILE — ${DURATION_FMT} — $TRANSFER_STATUS${WARN_FLAG:+ [$WARN_FLAG]}"
+    echo "$ICON_BANDWIDTH Logged: $TRANSFER_PROFILE — ${DURATION_FMT} — $TRANSFER_STATUS${WARN_FLAG:+ [$WARN_FLAG]}"
 
     # Trim entries older than retention — atomic write via temp file
     CUTOFF=$(date -d "${BANDWIDTH_LOG_RETENTION} days ago" '+%Y-%m-%d')