feat: show interactive client select when --client not provided

[remorses]

Shows an interactive select prompt with all available clients when --client flag is not provided. Uses consola's built-in prompt functionality (no new dependencies).

Closes #38

cc @Dhravya

[Copilot]

Pull request overview

This pull request implements an interactive client selection prompt that appears when the --client flag is not provided, improving the user experience by allowing users to select from available clients interactively rather than requiring them to know and provide the correct client name upfront.

Changes:

• Made the client parameter optional in the InstallArgv interface
• Removed demandOption: true from the client option in the command builder
• Added interactive prompt for client selection using consola when client is not provided or is invalid
• Updated all references from argv.client to use a local client variable throughout the handler

Comments suppressed due to low confidence (1)

src/commands/install.ts:264

• Missing validation after the target prompt. If the user cancels the prompt, it may return undefined or an empty value, but the code continues execution. This could lead to errors when inferring the name from an undefined target or building commands. Add validation to check if a valid target was entered, and exit gracefully if not.

  let target = argv.target
  if (!target) {
    target = (await logger.prompt('Enter the package name, command, or URL:', {
      type: 'text',
    })) as string
  }

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