feat: cli migrate to cobra with subcommands (#550)

* feat: migrate CLI to cobra with dump/list/version subcommands (#546)
* fix: remove residual duckduckgo references and add README/LICENSE to release archives
* fix: address PR review feedback from Copilot

cmd/hack-browser-data/list.go

@@ -0,0 +1,97 @@
+package main
+
+import (
+	"fmt"
+	"io"
+	"text/tabwriter"
+
+	"github.com/spf13/cobra"
+
+	"github.com/moond4rk/hackbrowserdata/browser"
+	"github.com/moond4rk/hackbrowserdata/types"
+)
+
+func listCmd() *cobra.Command {
+	var detail bool
+
+	cmd := &cobra.Command{
+		Use:   "list",
+		Short: "List detected browsers and profiles",
+		Example: `  hack-browser-data list
+  hack-browser-data list --detail`,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			browsers, err := browser.PickBrowsers(browser.PickOptions{Name: "all"})
+			if err != nil {
+				return err
+			}
+			if len(browsers) == 0 {
+				cmd.Println("No browsers found.")
+				return nil
+			}
+			if detail {
+				return printDetail(cmd.OutOrStdout(), browsers)
+			}
+			return printBasic(cmd.OutOrStdout(), browsers)
+		},
+	}
+
+	cmd.Flags().BoolVar(&detail, "detail", false, "show per-category entry counts")
+	return cmd
+}
+
+func printBasic(out io.Writer, browsers []browser.Browser) error {
+	w := tabwriter.NewWriter(out, 0, 0, 3, ' ', 0)
+	fmt.Fprintln(w, "Browser\tProfile\tPath")
+	for _, b := range browsers {
+		fmt.Fprintf(w, "%s\t%s\t%s\n", b.BrowserName(), b.ProfileName(), b.ProfileDir())
+	}
+	return w.Flush()
+}
+
+func printDetail(out io.Writer, browsers []browser.Browser) error {
+	// Build header: Browser  Profile  Password  Cookie  ...
+	w := tabwriter.NewWriter(out, 0, 0, 3, ' ', 0)
+	fmt.Fprint(w, "Browser\tProfile")
+	for _, c := range types.AllCategories {
+		fmt.Fprintf(w, "\t%s", c.String())
+	}
+	fmt.Fprintln(w)
+
+	for _, b := range browsers {
+		data, _ := b.Extract(types.AllCategories)
+		fmt.Fprintf(w, "%s\t%s", b.BrowserName(), b.ProfileName())
+		for _, c := range types.AllCategories {
+			fmt.Fprintf(w, "\t%d", countEntries(data, c))
+		}
+		fmt.Fprintln(w)
+	}
+	return w.Flush()
+}
+
+func countEntries(data *types.BrowserData, c types.Category) int {
+	if data == nil {
+		return 0
+	}
+	switch c {
+	case types.Password:
+		return len(data.Passwords)
+	case types.Cookie:
+		return len(data.Cookies)
+	case types.Bookmark:
+		return len(data.Bookmarks)
+	case types.History:
+		return len(data.Histories)
+	case types.Download:
+		return len(data.Downloads)
+	case types.CreditCard:
+		return len(data.CreditCards)
+	case types.Extension:
+		return len(data.Extensions)
+	case types.LocalStorage:
+		return len(data.LocalStorage)
+	case types.SessionStorage:
+		return len(data.SessionStorage)
+	default:
+		return 0
+	}
+}