Function validateSchemaName

src/utils/change-metadata.ts:32–43

(
  schemaName: string,
  projectRoot?: string
)

 * @throws Error if schema is not found
 */
export function validateSchemaName(
  schemaName: string,
  projectRoot?: string
): string {
  const availableSchemas = listSchemas(projectRoot);
  if (!availableSchemas.includes(schemaName)) {
    throw new Error(
      `Unknown schema '${schemaName}'. Available: ${availableSchemas.join(', ')}`
    );
  }
  return schemaName;
}

/**
 * Writes change metadata to .openspec.yaml in the change directory.