Function isProtocolHandlerCurrent

src/utils/deepLink/registerProtocol.ts:263–290

(
  claudePath: string,
)

 * Any read error (ENOENT, EACCES, reg nonzero) → false → re-register.
 */
export async function isProtocolHandlerCurrent(
  claudePath: string,
): Promise<boolean> {
  try {
    switch (process.platform) {
      case 'darwin': {
        const target = await fs.readlink(MACOS_SYMLINK_PATH)
        return target === claudePath
      }
      case 'linux': {
        const content = await fs.readFile(linuxDesktopPath(), 'utf8')
        return content.includes(linuxExecLine(claudePath))
      }
      case 'win32': {
        const { stdout, code } = await execFileNoThrow(
          'reg',
          ['query', WINDOWS_COMMAND_KEY, '/ve'],
          { useCwd: false },
        )
        return code === 0 && stdout.includes(windowsCommandValue(claudePath))
      }
      default:
        return false
    }
  } catch {
    return false
  }
}

/**
 * Auto-register the claude-cli:// deep link protocol handler when missing