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_watchdog.sh

@@ -91,6 +91,14 @@
 # OPERATIONAL SAFEGUARDS
 # ==============================================================================================
 #
+# Lock Acquisition
+#   Prevents concurrent execution via acquire_lock(). Safe at array start —
+#   only one watchdog instance runs at a time.
+#
+# Host Detection
+#   detect_hosts() identifies which server is running the script and aliases
+#   all HOST*_WATCHDOG_* arrays to the correct host's values.
+#
 # Startup Grace Period
 #   Restart actions suppressed for WATCHDOG_STARTUP_GRACE seconds after the
 #   watchdog starts. Checks still run and log — only restarts are suppressed.
@@ -224,14 +232,10 @@ parse_args "$@"
 # ==============================================================================================
 # ━━━ Setup — runs once at start ━━━
 # ==============================================================================================
-echo ""
-echo "━━━ $ICON_GEAR Setup ━━━"
-
 if [[ "$EUID" -ne 0 ]]; then
     error "Must be run as root"
     exit 1
 fi
-success "Running as root"
 
 # Skip if another instance is running — no pile-up during long operations
 acquire_lock
@@ -243,7 +247,6 @@ if ! command -v docker >/dev/null 2>&1; then
     error "Docker not found — cannot start watchdog"
     exit 1
 fi
-success "Docker found"
 
 [[ "$DRY_RUN" == true ]] && warn "DRY RUN — no containers will be restarted"
 
@@ -519,7 +522,7 @@ check_docker_daemon() {
     # docker info is more definitive than docker ps for daemon health
     if timeout "$DOCKER_TIMEOUT" docker info >/dev/null 2>&1; then
         if [[ "$WATCHDOG_DAEMON_STRIKES" -gt 0 ]]; then
-            info "$ICON_STARTED Docker daemon recovered — clearing strikes"
+            log "$ICON_STARTED Docker daemon recovered — clearing strikes"
             queue_notify "Docker daemon recovered on $(hostname)" "normal"
             WATCHDOG_DAEMON_STRIKES=0
             WATCHDOG_DAEMON_RESTARTED=false
@@ -558,7 +561,7 @@ check_docker_daemon() {
     WATCHDOG_DAEMON_RESTARTED=true
     set_strikes "daemon_restarted_flag" "true" "$WATCHDOG_STATE_FILE"
     if /etc/rc.d/rc.docker restart >/dev/null 2>&1; then
-        info "Docker daemon restart issued — waiting ${WATCHDOG_DAEMON_RESTART_WAIT}s..."
+        log "Docker daemon restart issued — waiting ${WATCHDOG_DAEMON_RESTART_WAIT}s..."
         sleep "$WATCHDOG_DAEMON_RESTART_WAIT"
 
         if timeout "$DOCKER_TIMEOUT" docker info >/dev/null 2>&1; then
@@ -586,8 +589,7 @@ check_docker_daemon() {
 # ==============================================================================================
 # ━━━ Single-Pass Monitoring Run ━━━
 # ==============================================================================================
-info "$ICON_WATCHDOG Docker watchdog — $MY_ID — $(date '+%H:%M:%S')"
-echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
+log "$ICON_WATCHDOG Docker watchdog — $MY_ID — $(date '+%H:%M:%S')"
 
 CYCLE_START=$(date +%s)