feat: an account pane on Azure account rows: fields and groups to move through and copy

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

internal/ui/app/app_test.go

@@ -1099,3 +1099,41 @@ func TestAccountInDetails(t *testing.T) {
 		t.Errorf("still shown on a subscription:\n%s", d.screen())
 	}
 }
+
+// grouped is an account in two groups.
+type grouped struct{ described }
+
+func (grouped) Groups(context.Context) ([]string, error) {
+	return []string{"Platform team", "Vault readers"}, nil
+}
+
+func TestAccountPane(t *testing.T) {
+	t.Parallel()
+	d := newDriver(t, grouped{described{fake.Azure(0)}})
+	d.keys("g", "tab") // the account's row, then straight to its pane
+	if d.m.focus != paneDetail {
+		t.Fatalf("focus %v, want the fourth pane", d.m.focus)
+	}
+	scr := d.screen()
+	for _, want := range []string{"Account", "Alice Example", "groups 2", "Platform team", "Vault readers"} {
+		if !strings.Contains(scr, want) {
+			t.Errorf("missing %q:\n%s", want, scr)
+		}
+	}
+	bar := lastLine(scr)
+	if !strings.Contains(bar, "copy") || strings.Contains(bar, "reveal") || strings.Contains(bar, "versions") {
+		t.Errorf("help bar: %q", bar)
+	}
+	d.keys("j", "y")
+	if got := d.clip().content; got != "oid-123" {
+		t.Errorf("y on the object ID copied %q", got)
+	}
+	d.keys("G", "y")
+	if got := d.clip().content; got != "Vault readers" {
+		t.Errorf("y on a group copied %q", got)
+	}
+	d.keys("shift+tab")
+	if d.m.focus != paneSources {
+		t.Errorf("back to %v, want Sources", d.m.focus)
+	}
+}