Function safeFilenameId

src/bridge/sessionRunner.ts:24–26

(id: string)

 * or other filesystem issues, replacing them with underscores.
 */
export function safeFilenameId(id: string): string {
  return id.replace(/[^a-zA-Z0-9_-]/g, '_')
}

/**
 * A control_request emitted by the child CLI when it needs permission to