Docker_Essentials echo/log audit pass — all 8 scripts + Manual

Consistent two-tier output model across the entire folder:
- Per-container banners, action lines, and list details → log (ENABLE_LOGGING=true only)
- Section headers, summaries, counts, and status conclusions → echo (always visible)
- Warnings and errors always visible regardless of log setting
- Blank echo lines inside loops removed

All scripts: added Lock Acquisition and Host Detection entries to OPERATIONAL SAFEGUARDS.

Setup banners removed from docker_watchdog.sh, docker_weekly_restart.sh,
downloaders_reset.sh (noise before any work happens).

docker_watchdog.sh: removed success "Running as root" / "Docker found" setup lines;
info() → log() for daemon-recovered and per-cycle header; removed per-cycle echo separator.

docker_update.sh + docker_update_remaining.sh: docker pull stdout suppressed when
ENABLE_LOGGING=false to prevent orphaned Status: lines appearing without container context;
restructured pull block to use PIPESTATUS for exit code capture.

downloaders_reset.sh: 11× info() → log() for all per-item API operation lines.

docker_weekly_restart.sh: removed duplicate restart-order echo (build_restart_order
already logs it internally).

Manual-Docker_Essentials.md: documented the two-tier output model and watchdog
silent-when-healthy exception in the flag reference section.

Docker_Essentials/docker_container_stop.sh

@@ -68,6 +68,9 @@
 # Docker Presence Check
 #   Verifies docker binary exists before execution.
 #
+# Lock Acquisition
+#   acquire_lock prevents overlapping runs (e.g. array_stopping firing twice).
+#
 # Timeout Protection
 #   All docker commands wrapped in timeout protection to prevent daemon hangs
 #   from stalling shutdown indefinitely.
@@ -167,7 +170,7 @@ echo ""
 echo "━━━ $ICON_CONTAINERS Docker Container Stop — $(date '+%Y-%m-%d %H:%M:%S') ━━━"
 
 if [[ ${#RUNNING[@]} -eq 0 ]]; then
-    log "No running containers — nothing to do"
+    echo "No running containers — nothing to do"
     exit 0
 fi
 
@@ -180,12 +183,11 @@ FAILED=()
 
 for container in "${RUNNING[@]}"; do
     [[ -z "$container" ]] && continue
-    echo "━━━ $ICON_CONTAINERS $container ━━━"
+    log "━━━ $ICON_CONTAINERS $container ━━━"
 
     if [[ "$DRY_RUN" == true ]]; then
         warn "DRY RUN — would stop $container"
         STOPPED+=("$container")
-        echo ""
         continue
     fi
 
@@ -202,7 +204,7 @@ for container in "${RUNNING[@]}"; do
             -f '{{.State.Running}}' "$container" 2>/dev/null || echo "unknown")
 
         if [[ "$STATE" != "true" ]]; then
-            echo "$ICON_DONE  $container stopped ✅"
+            log "$ICON_DONE $container stopped ✅"
             STOPPED+=("$container")
             success=true
             break
@@ -230,8 +232,6 @@ for container in "${RUNNING[@]}"; do
             FAILED+=("$container")
         fi
     fi
-
-    echo ""
 done
 
 END=$(date +%s)
@@ -243,8 +243,8 @@ echo "━━━━━ $ICON_SUMMARY DOCKER CONTAINER STOP SUMMARY ━━━━
 echo "$ICON_HOST       Identity:  $MY_ID ($LOCAL_SERVER_NAME)"
 echo "$ICON_TIME       Duration:  $(format_duration $(( END - START )))"
 echo "$ICON_CONTAINERS Scope:     ${#RUNNING[@]} running → ${#STOPPED[@]} stopped"
-[[ ${#STOPPED[@]} -gt 0 ]] && echo "$ICON_DONE       Stopped:   ${STOPPED[*]}"
-[[ ${#FAILED[@]} -gt 0 ]]  && echo "$ICON_ERROR      Failed:    ${FAILED[*]}"
+[[ ${#STOPPED[@]} -gt 0 ]] && log "$ICON_DONE  Stopped:   ${STOPPED[*]}"
+[[ ${#FAILED[@]} -gt 0 ]]  && echo "$ICON_ERROR Failed:    ${FAILED[*]}"
 
 if [[ "$DRY_RUN" == true ]]; then
     warn "DRY RUN — no containers stopped"