Function cleanup

cli/src/utils/terminal-color-detection.ts:126–166

()

    let dataHandler: ((data: Buffer) => void) | null = null

    const cleanup = () => {
      if (resolved) return
      resolved = true

      if (timeoutId) {
        clearTimeout(timeoutId)
        timeoutId = null
      }

      // Remove data handler from stdin
      if (dataHandler) {
        process.stdin.removeListener('data', dataHandler)
        dataHandler = null
      }

      // Restore raw mode state
      if (process.stdin.isTTY && process.stdin.setRawMode) {
        try {
          process.stdin.setRawMode(wasRawMode)
        } catch {
          // Ignore errors restoring raw mode
        }
      }

      // Pause stdin so we leave it non-flowing before other listeners attach
      try {
        process.stdin.pause()
      } catch {
        // Ignore pause errors
      }

      // Close TTY write fd
      if (ttyWriteFd !== null) {
        try {
          closeSync(ttyWriteFd)
        } catch {
          // Ignore close errors
        }
        ttyWriteFd = null
      }
    }

    const resolveWith = (value: string | null) => {
      if (resolved) return