unRAID_Essentials echo/log audit pass + exit traps

Exit traps: resource_watchdog registers/clears trap for stopped containers;
server_reboot registers trap to restart Docker service on abort; system_watchdog
records containers before bulk stop and registers trap to restart if reboot aborts.

echo/log audit: status conclusions, nothing-to-do, and clean-cycle confirmations
→ echo across clear_logs, docker_syslog_filter, mover_stop, php_fpm_max_children,
rsync_stop, user_scripts_stop. resource_watchdog: disabled flag, restore-level
messages, pressure status → echo. system_watchdog: clean-cycle summary → echo.
Manual-Unraid_Essentials.md: added Output Tiers section.

unRAID_Essentials/system_watchdog.sh

@@ -350,6 +350,17 @@ run_strike_check() {
     return 1
 }
 
+# ── Exit Trap — restart containers stopped before an aborted reboot ───────────────────────────
+_SYS_REBOOT_STOPPED=()
+_trap_sys_reboot_restart() {
+    [[ ${#_SYS_REBOOT_STOPPED[@]} -eq 0 ]] && return
+    warn "Exit trap: restarting containers stopped before aborted reboot"
+    for c in "${_SYS_REBOOT_STOPPED[@]}"; do
+        [[ -z "$c" ]] && continue
+        docker inspect "$c" >/dev/null 2>&1 && docker start "$c" >/dev/null 2>&1 || true
+    done
+}
+
 # ==============================================================================================
 # ── DO REBOOT ─────────────────────────────────────────────────────────────────────────────────
 # ==============================================================================================
@@ -424,6 +435,8 @@ do_reboot() {
 
     warn "Stopping Docker containers..."
     if command -v docker >/dev/null 2>&1; then
+        mapfile -t _SYS_REBOOT_STOPPED < <(docker ps --format '{{.Names}}' 2>/dev/null)
+        trap _trap_sys_reboot_restart EXIT
         timeout 60 docker ps -q 2>/dev/null | xargs -r docker stop >/dev/null 2>&1
     fi
 
@@ -433,6 +446,7 @@ do_reboot() {
     warn "Syncing disks..."
     sync
 
+    trap - EXIT  # committed to reboot — containers should stay down
     sleep 5
     /sbin/reboot
 }
@@ -784,7 +798,7 @@ echo "━━━━━━━━━━━━━━━━━━━━━━━━
         do_reboot "standard" "${TRIGGERS[@]}"
         exit 0
     else
-        log "System healthy ✅ ($(date '+%H:%M:%S'))"
+        echo "System healthy ✅ ($(date '+%H:%M:%S'))"
     fi
 
     # Keep state file mtime fresh — docker_watchdog stale guard checks this