Fix three image cleanup gaps: weekly restart prune, mode-aware rebuild error, monthly orphan sweep

docker_weekly_restart.sh was missing the trailing dangling prune that daily_restart has.
docker_update.sh rebuild failure message always named docker_daily_restart.sh regardless of mode.
docker_prune_images.sh --all added to monthly — the only scheduled path that removes tagged orphan images.

Docker_Essentials/docker_update.sh

@@ -397,7 +397,9 @@ if [[ ${#UPDATED[@]} -gt 0 ]]; then
             echo "$ICON_DONE $container rebuilt ✅"
             REBUILT+=("$container")
         else
-            error "Failed to rebuild $container — will be picked up by docker_daily_restart.sh"
+            _fallback_msg=$([[ "$WEEKLY_MODE" == true ]] && echo "docker_weekly_restart.sh" || ([[ "$REMAINDER_MODE" == true ]] && echo "no follow-up restart" || echo "docker_daily_restart.sh"))
+            error "Failed to rebuild $container — $_fallback_msg"
+            unset _fallback_msg
             notify "$container failed to rebuild after image update on $(hostname)" "Docker Update" "warning"
             REBUILD_FAILED+=("$container")
         fi