refactor: simplify stack management state

manage.sh

@@ -88,14 +88,14 @@ validate_name() {
 		die "invalid $kind name: $value"
 }
 
-# manage.conf DSL: set the default concurrency for groups without an override.
+# Set the default concurrency for groups without an override.
 max_parallel() {
 	[[ $# -eq 1 ]] || die "max_parallel expects exactly one value"
 	validate_parallel_limit "$1"
 	DEFAULT_MAX_PARALLEL="$1"
 }
 
-# manage.conf DSL: declare an ordered group and its stacks.
+# Declare an ordered group and its stacks.
 # Usage: group NAME [--parallel N] STACK...
 group() {
 	[[ $# -ge 2 ]] || die "group expects NAME [--parallel N] STACK..."
@@ -134,7 +134,7 @@ group() {
 	CONFIG_GROUP_STACKS+=("$*")
 }
 
-# manage.conf DSL: exclude stacks from all bulk operations.
+# Exclude stacks from all bulk operations.
 exclude() {
 	[[ $# -ge 1 ]] || die "exclude expects at least one stack"
 
@@ -152,16 +152,8 @@ exclude() {
 load_config() {
 	[[ -f "$CONFIG_FILE" ]] || return 0
 
-	bash -n "$CONFIG_FILE" || die "syntax error in config file: $CONFIG_FILE"
-	# This is a trusted Bash configuration file that calls the DSL above.
-	source "$CONFIG_FILE"
-
-	local legacy
-	for legacy in WHITELIST BLACKLIST PRIORITY; do
-		if declare -p "$legacy" >/dev/null 2>&1; then
-			die "$legacy is no longer supported; migrate $CONFIG_FILE to group/exclude directives"
-		fi
-	done
+	# The trusted config calls max_parallel, group, and exclude above.
+	source "$CONFIG_FILE" || die "cannot load config file: $CONFIG_FILE"
 }
 
 discover_stacks() {
@@ -427,27 +419,18 @@ run_all_grouped() {
 run_all_sequential() {
 	local action="$1"
 	local stack
-
-	RUN_SUCCESS=0
-	RUN_FAILED=0
-	RUN_FAILED_STACKS=()
-	RUN_SKIPPED_GROUPS=()
+	local -a failed_stacks=()
 	warn_unassigned
 
 	for stack in "${MANAGED_STACKS[@]}"; do
-		if run_stack "$stack" "$action"; then
-			((RUN_SUCCESS += 1))
-		else
-			((RUN_FAILED += 1))
-			RUN_FAILED_STACKS+=("$stack")
-		fi
+		run_stack "$stack" "$action" || failed_stacks+=("$stack")
 	done
 
-	if ((RUN_FAILED > 0)); then
+	if ((${#failed_stacks[@]} > 0)); then
 		echo
-		echo "Failed stacks: ${RUN_FAILED_STACKS[*]}" >&2
+		echo "Failed stacks: ${failed_stacks[*]}" >&2
+		return 1
 	fi
-	((RUN_FAILED == 0))
 }
 
 list_stacks() {