feat(dispatch): launch interactive menu on no-arg TTY invocation

internal/dispatch/dispatch_test.go

@@ -135,3 +135,22 @@ func TestLegacyCommandsHaveExactlyOneHome(t *testing.T) {
 		}
 	}
 }
+
+func TestMenuItemsSkipsUnwiredIncludesWired(t *testing.T) {
+	items := menuItems()
+	if len(items) == 0 {
+		t.Fatal("expected menu items")
+	}
+	sawModuleBuild := false
+	for _, it := range items {
+		if it.Args[0] == "depot" {
+			t.Errorf("unwired builder %q must not appear in the menu", it.Args[0])
+		}
+		if len(it.Args) == 2 && it.Args[0] == "module" && it.Args[1] == "build" {
+			sawModuleBuild = true
+		}
+	}
+	if !sawModuleBuild {
+		t.Error("expected 'module build' in the menu")
+	}
+}