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/zfs_memory_snapshot.sh

@@ -227,7 +227,7 @@ else
         error "One or more ZFS pools are NOT ONLINE: $UNHEALTHY"
         WARNINGS+=("ZFS pool unhealthy: $UNHEALTHY")
     else
-        log "All monitored ZFS pools are ONLINE ✅"
+        echo "All monitored ZFS pools are ONLINE ✅"
     fi
 
     if [[ ${#ZFS_REPORT_IGNORE_POOLS[@]} -gt 0 ]]; then
@@ -349,7 +349,7 @@ echo "$ICON_ZFS     Log:      $ZFS_REPORT_LOG"
 echo ""
 
 if [[ ${#WARNINGS[@]} -eq 0 ]]; then
-    log "$ICON_DONE All checks within thresholds ✅"
+    echo "$ICON_DONE All checks within thresholds ✅"
 else
     echo "$ICON_WARN Warnings: ${#WARNINGS[@]}"
     for w in "${WARNINGS[@]}"; do