Step 6: Restore with timestamp logic and confirm callback.

Restore writes tracked files back to their original locations.
Supports selective path restoration, force mode, and a confirm
callback for files where the on-disk mtime >= manifest timestamp
(truncated to seconds for cross-platform reliability). Creates
parent directories, recreates symlinks, and sets file permissions.

CLI: sgard restore [path...] [--force].
6 new tests (file, permissions, symlink, parent dirs, selective, confirm skip).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

cmd/sgard/restore.go

@@ -0,0 +1,46 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/kisom/sgard/garden"
+	"github.com/spf13/cobra"
+)
+
+var forceRestore bool
+
+var restoreCmd = &cobra.Command{
+	Use:   "restore [path...]",
+	Short: "Restore tracked files to their original locations",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		g, err := garden.Open(repoFlag)
+		if err != nil {
+			return err
+		}
+
+		confirm := func(path string) bool {
+			fmt.Printf("Overwrite %s? [y/N] ", path)
+			scanner := bufio.NewScanner(os.Stdin)
+			if scanner.Scan() {
+				answer := strings.TrimSpace(strings.ToLower(scanner.Text()))
+				return answer == "y" || answer == "yes"
+			}
+			return false
+		}
+
+		if err := g.Restore(args, forceRestore, confirm); err != nil {
+			return err
+		}
+
+		fmt.Println("Restore complete.")
+		return nil
+	},
+}
+
+func init() {
+	restoreCmd.Flags().BoolVarP(&forceRestore, "force", "f", false, "overwrite without prompting")
+	rootCmd.AddCommand(restoreCmd)
+}