Centralize output schema and module key validation catalogs

internal/core/outputschema/registry.go

@@ -31,15 +31,31 @@ var definitions = map[string]Definition{
 	},
 }
 
+var supportedKeys = []string{
+	SchemaBareSegments,
+	SchemaAuditaV1,
+}
+
+func SupportedKeys() []string {
+	out := make([]string, len(supportedKeys))
+	copy(out, supportedKeys)
+	return out
+}
+
+func IsSupported(key string) bool {
+	_, ok := definitions[strings.TrimSpace(key)]
+	return ok
+}
+
 func Resolve(key string) (Definition, error) {
 	normalized := strings.TrimSpace(key)
 	if normalized == "" {
 		return Definition{}, fmt.Errorf("output schema must not be empty")
 	}
-	def, ok := definitions[normalized]
-	if !ok {
+	if !IsSupported(normalized) {
 		return Definition{}, fmt.Errorf("unsupported output schema %q", normalized)
 	}
+	def := definitions[normalized]
 	return def, nil
 }