Method installForShell

src/commands/completion.ts:124–205

* Install completion script for a specific shell

(shell: SupportedShell, verbose: boolean)

   * Install completion script for a specific shell
   */
  private async installForShell(shell: SupportedShell, verbose: boolean): Promise<void> {
    const generator = CompletionFactory.createGenerator(shell);
    const installer = CompletionFactory.createInstaller(shell);

    const spinner = ora(`Installing ${shell} completion script...`).start();

    try {
      // Generate the completion script
      const script = generator.generate(COMMAND_REGISTRY);

      // Install it
      const result = await installer.install(script);

      spinner.stop();

      if (result.success) {
        console.log(`✓ ${result.message}`);

        if (verbose && result.installedPath) {
          console.log(`  Installed to: ${result.installedPath}`);
          if (result.backupPath) {
            console.log(`  Backup created: ${result.backupPath}`);
          }

          // Check if any shell config was updated
          const configWasUpdated = result.zshrcConfigured || result.bashrcConfigured || result.profileConfigured;

          if (configWasUpdated) {
            const configPaths: Record<string, string> = {
              zsh: '~/.zshrc',
              bash: '~/.bashrc',
              fish: '~/.config/fish/config.fish',
              powershell: '$PROFILE',
            };
            const configPath = configPaths[shell] || 'config file';
            console.log(`  ${configPath} configured automatically`);
          }
        }

        // Display warnings if present
        if (result.warnings && result.warnings.length > 0) {
          console.log('');
          for (const warning of result.warnings) {
            console.log(warning);
          }
        }

        // Print instructions (only shown if .zshrc wasn't auto-configured)
        if (result.instructions && result.instructions.length > 0) {
          console.log('');
          for (const instruction of result.instructions) {
            console.log(instruction);
          }
        } else {
          // Check if any shell config was updated (InstallationResult has: zshrcConfigured, bashrcConfigured, profileConfigured)
          const configWasUpdated = result.zshrcConfigured || result.bashrcConfigured || result.profileConfigured;

          if (configWasUpdated) {