feat(cli): add user delete command

cmd/delete_user.go

@@ -0,0 +1,56 @@
+package cmd
+
+import (
+	"fmt"
+	"os"
+	"os/user"
+
+	"github.com/spf13/cobra"
+	"stackroost/internal"
+	"stackroost/internal/logger"
+)
+
+var deleteUserCmd = &cobra.Command{
+	Use:   "delete-user",
+	Short: "Delete a system user and optionally remove their home directory",
+	Run: func(cmd *cobra.Command, args []string) {
+		username, _ := cmd.Flags().GetString("user")
+		removeHome, _ := cmd.Flags().GetBool("remove-home")
+
+		if internal.IsNilOrEmpty(username) {
+			logger.Error("Please provide a username using --user")
+			os.Exit(1)
+		}
+
+		// Check if user exists
+		_, err := user.Lookup(username)
+		if err != nil {
+			logger.Warn(fmt.Sprintf("User '%s' does not exist", username))
+			return
+		}
+
+		logger.Info(fmt.Sprintf("Deleting user: %s", username))
+
+		// Build command args
+		cmdArgs := []string{"userdel"}
+		if removeHome {
+			cmdArgs = append(cmdArgs, "-r")
+		}
+		cmdArgs = append(cmdArgs, username)
+
+		// Execute command
+		if err := internal.RunCommand("sudo", cmdArgs...); err != nil {
+			logger.Error(fmt.Sprintf("Failed to delete user %s: %v", username, err))
+			os.Exit(1)
+		}
+
+		logger.Success(fmt.Sprintf("User '%s' deleted", username))
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(deleteUserCmd)
+	deleteUserCmd.Flags().String("user", "", "Username to delete")
+	deleteUserCmd.Flags().Bool("remove-home", false, "Remove the user's home directory")
+	deleteUserCmd.MarkFlagRequired("user")
+}