fix: streamline parallel stack output

manage.sh

@@ -254,19 +254,27 @@ stack_group() {
 compose() {
 	local stack="$1"
 	shift
+	local -a docker_args=(compose)
+
+	if [[ "${STACKS_FORCE_ANSI:-0}" == "1" ]]; then
+		docker_args+=(--ansi always)
+	fi
 
 	(
 		cd -- "$STACKS_DIR/$stack" || exit 1
-		docker compose "$@"
+		docker "${docker_args[@]}" "$@"
 	)
 }
 
 run_stack() {
 	local stack="$1"
 	local action="$2"
+	local show_heading="${3:-1}"
 
+	if [[ "$show_heading" == "1" ]]; then
 		echo
 		echo "==> $stack: $action"
+	fi
 
 	case "$action" in
 	up)
@@ -289,8 +297,9 @@ run_stack_prefixed() {
 	local action="$2"
 	local line status
 
-	run_stack "$stack" "$action" 2>&1 |
+	STACKS_FORCE_ANSI=1 run_stack "$stack" "$action" 0 2>&1 |
 		while IFS= read -r line || [[ -n "$line" ]]; do
+			[[ -n "$line" ]] || continue
 			printf '[%s] %s\n' "$stack" "$line"
 		done
 	status="${PIPESTATUS[0]}"