feat(format): add check and fix workflows

readme.hints.md

@@ -193,12 +193,22 @@ gitzone format
 # Read-only JSON plan
 gitzone format plan --json
 
+# CI-friendly check, exits non-zero when changes or validator errors remain
+gitzone format check
+
 # Dry run to preview changes
 gitzone format --dry-run
 
+# Limit formatter modules
+gitzone format --only prettier,packagejson
+gitzone format --skip license
+
 # Non-interactive apply
 gitzone format --write --yes
 
+# Deterministic format first, opencode for remaining issues
+gitzone format fix
+
 # Plan only (no execution)
 gitzone format --plan-only