feat: add mouse support + install pnpm, uv, docker, gh

- Added tea.WithMouseCellMotion() for mouse interaction in TUI
- Added installers for pnpm (npm), uv (astral), docker (pacman/apt/dnf/brew),
  gh/github-cli (pacman/apt/dnf/brew)

💘 Generated with Crush

Assisted-by: GLM-5.1 via Crush <crush@charm.land>

cmd/muyue/main.go

@@ -102,7 +102,7 @@ func runTUI() {
 	result := scanner.ScanSystem()
 
 	model := tui.NewModel(cfg, result)
-	p := tea.NewProgram(model, tea.WithAltScreen())
+	p := tea.NewProgram(model, tea.WithAltScreen(), tea.WithMouseCellMotion())
 
 	if _, err := p.Run(); err != nil {
 		fmt.Fprintf(os.Stderr, "Error: %v\n", err)