chore: DRY up display of repo paths

I want to turn /home/user/path/to/repo into ~/path/to/repo.  This
creates a method for different commands to print a pretty path.

cli/app.go

@@ -9,6 +9,7 @@ import (
 	"os"
 	"path/filepath"
 	"slices"
+	"strings"
 )
 
 const (
@@ -117,3 +118,8 @@ func (app *App) Unmarshal(configFile string, configIsDefault bool) []Repo {
 		return repo.URL == "" || repo.Name == ""
 	})
 }
+
+// PrettyPath replaces a user's home directory with ~ in a string.
+func (app *App) PrettyPath(s string) string {
+	return strings.Replace(s, app.HomeDir, "~", 1)
+}

cli/initialize.go

@@ -50,7 +50,13 @@ func (app *App) initialize(repo Repo, ch chan<- Publisher) {
 	// to send a Success on the channel and return.
 	repoPath := filepath.Join(app.HomeDir, defaultStorage, repo.Name)
 	if _, err := os.Stat(repoPath); err == nil {
-		ch <- Success{msg: fmt.Sprintf("%s: %s already exists", app.CmdName, repoPath)}
+		ch <- Success{
+			msg: fmt.Sprintf(
+				"%s: %s already exists",
+				app.CmdName,
+				app.PrettyPath(repoPath),
+			),
+		}
 		return
 	}
 	args := []string{"clone", "--mirror", repo.URL, repo.Name}
@@ -59,7 +65,7 @@ func (app *App) initialize(repo Repo, ch chan<- Publisher) {
 	cmdString := fmt.Sprintf(
 		"git %s (in %s)",
 		strings.Join(args, " "),
-		strings.Replace(cmd.Dir, app.HomeDir, "~", 1),
+		app.PrettyPath(cmd.Dir),
 	)
 	err := cmd.Run()
 	if err != nil {

cli/update.go

@@ -41,7 +41,7 @@ func (app *App) update(repo Repo, ch chan<- Publisher) {
 	cmdString := fmt.Sprintf(
 		"git %s (in %s)",
 		strings.Join(args, " "),
-		strings.Replace(cmd.Dir, app.HomeDir, "~", 1),
+		app.PrettyPath(cmd.Dir),
 	)
 	err := cmd.Run()
 	if err != nil {