feat(cli): add archive command for cross-host data transport (#610)

* feat(cli): add archive command for cross-host data transport
* fix(archive): correct flat-layout path and entry-count wording
* refactor(archive): rename BuildArchive to WriteArchive

cmd/hack-browser-data/archive.go

@@ -0,0 +1,49 @@
+package main
+
+import (
+	"github.com/spf13/cobra"
+
+	"github.com/moond4rk/hackbrowserdata/browser"
+	"github.com/moond4rk/hackbrowserdata/log"
+)
+
+func archiveCmd() *cobra.Command {
+	var (
+		browserName string
+		category    string
+		outputPath  string
+	)
+
+	cmd := &cobra.Command{
+		Use:   "archive",
+		Short: "Pack decryption-relevant profile files into a zip for cross-host restore",
+		Example: `  hack-browser-data archive
+  hack-browser-data archive -b chrome -c cookie -o chrome-cookies.zip`,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			browsers, err := browser.DiscoverBrowsers(browser.DiscoverOptions{Name: browserName})
+			if err != nil {
+				return err
+			}
+			if len(browsers) == 0 {
+				log.Warnf("no browsers found")
+				return nil
+			}
+			categories, err := parseCategories(category)
+			if err != nil {
+				return err
+			}
+			n, err := browser.WriteArchive(browsers, categories, outputPath)
+			if err != nil {
+				return err
+			}
+			log.Infof("Archived %d entries to %s", n, outputPath)
+			return nil
+		},
+	}
+
+	cmd.Flags().StringVarP(&browserName, "browser", "b", "all", "target browser: all|"+browser.Names())
+	cmd.Flags().StringVarP(&category, "category", "c", "all", "data categories (comma-separated): all|"+categoryNames())
+	cmd.Flags().StringVarP(&outputPath, "output", "o", "browser-data.zip", "output archive of decryption-relevant browser files")
+
+	return cmd
+}