Function renderInteractive

pkg/cmd/skills/preview/preview.go:317–373

renderInteractive shows the file tree, then a picker to browse individual files.

(opts *PreviewOptions, cs *iostreams.ColorScheme, skill discovery.Skill,
	files []discovery.SkillFile, renderedSkillMD string, extraFiles []discovery.SkillFile,
	apiClient *api.Client, hostname, owner, repo string)

// renderInteractive shows the file tree, then a picker to browse individual files.
func renderInteractive(opts *PreviewOptions, cs *iostreams.ColorScheme, skill discovery.Skill,
	files []discovery.SkillFile, renderedSkillMD string, extraFiles []discovery.SkillFile,
	apiClient *api.Client, hostname, owner, repo string) {

	// Show the file tree to stderr so it persists above the prompt
	fmt.Fprintf(opts.IO.ErrOut, "\n%s\n", cs.Bold(skill.DisplayName()+"/"))
	renderFileTree(opts.IO.ErrOut, cs, files)
	fmt.Fprintln(opts.IO.ErrOut)

	// Build choices: SKILL.md first, then extra files
	choices := make([]string, 0, len(extraFiles)+1)
	choices = append(choices, "SKILL.md")
	for _, f := range extraFiles {
		choices = append(choices, f.Path)
	}

	// Save original stdout. StopPager closes IO.Out, so we need to
	// restore a working writer before each StartPager call.
	originalOut := opts.IO.Out

	for {
		// Restore original Out before each pager cycle. StartPager replaces
		// IO.Out with a pipe; StopPager closes that pipe but does not
		// restore the original. The original writer remains valid.
		opts.IO.Out = originalOut

		idx, err := opts.Prompter.Select("View a file (Esc to exit):", "", choices)
		if err != nil {
			return // Prompter returns error on Esc/Ctrl-C; treat as graceful exit
		}

		var content string

		if idx == 0 {
			content = renderedSkillMD
		} else {
			selectedFile := extraFiles[idx-1]

			// Fetch on demand; don't hold blob data in memory
			fileContent, fetchErr := discovery.FetchBlob(apiClient, hostname, owner, repo, selectedFile.SHA)
			if fetchErr != nil {
				fmt.Fprintf(opts.IO.ErrOut, "%s could not fetch %s: %v\n", cs.Red("!"), selectedFile.Path, fetchErr)
				continue
			}
			content = renderSelectedFilePreview(opts, selectedFile.Path, fileContent)
			if !strings.HasSuffix(content, "\n") {
				content += "\n"
			}
		}

		if err := opts.IO.StartPager(); err != nil {
			fmt.Fprintf(opts.IO.ErrOut, "starting pager failed: %v\n", err)
		}
		fmt.Fprint(opts.IO.Out, content)
		opts.IO.StopPager()
	}
}