List mob names in purge confirmation prompt

cmd/root.go

@@ -1,6 +1,7 @@
 package cmd
 
 import (
+	"bytes"
 	"fmt"
 	"os"
 	"os/exec"
@@ -663,7 +664,20 @@ func cmdPurge(_ []string) error {
 	fmt.Println()
 	fmt.Printf("  %s⚠ DESTRUCTIVE OPERATION%s\n", r, rst)
 	fmt.Println()
-	fmt.Printf("  This will permanently remove all %s%d mob(s)%s and their worktrees.\n", r, len(cfg.Mobs), rst)
+	fmt.Println("  The following mobs will be permanently removed:")
+	fmt.Println()
+	var buf bytes.Buffer
+	w := tabwriter.NewWriter(&buf, 0, 0, 2, ' ', 0)
+	fmt.Fprintln(w, "NAME\tBRANCH")
+	for _, m := range cfg.Mobs {
+		branch := mob.ActualBranch(root, cfg, &m)
+		fmt.Fprintf(w, "%s\t%s\n", m.Name, branch)
+	}
+	w.Flush()
+	for _, line := range strings.Split(strings.TrimRight(buf.String(), "\n"), "\n") {
+		fmt.Printf("    %s\n", line)
+	}
+	fmt.Println()
 	fmt.Printf("  Any %suncommitted or unpushed changes%s in those worktrees will be %spermanently lost%s.\n", r, rst, r, rst)
 	fmt.Println()
 	fmt.Printf("  %sThis cannot be undone.%s\n", r, rst)

internal/mob/integration_test.go

@@ -766,6 +766,15 @@ func TestPurge(t *testing.T) {
 		t.Fatalf("clear failed: %s\n%s", err, out)
 	}
 
+	// then -> output lists mob names and branches before confirmation
+	outStr := string(out)
+	if !strings.Contains(outStr, "one") || !strings.Contains(outStr, "mob/one") {
+		t.Errorf("purge output should list mob 'one' with branch, got: %s", outStr)
+	}
+	if !strings.Contains(outStr, "two") || !strings.Contains(outStr, "mob/two") {
+		t.Errorf("purge output should list mob 'two' with branch, got: %s", outStr)
+	}
+
 	// then -> no mobs
 	cfg := readConfig(t, repoPath)
 	mobs, _ := cfg["mobs"].([]interface{})