feat: fix proxy compatibility and establish TUI foundation

cmd/proxyctl/main.go

@@ -154,7 +154,7 @@ func runWithEnvironmentAndTargets(args []string, input io.Reader, output io.Writ
 	if err != nil {
 		return err
 	}
-	program := tea.NewProgram(tui.NewModel(application), tea.WithInput(input), tea.WithOutput(output))
+	program := tea.NewProgram(tui.NewModel(application, tui.WithOutput(output)), tea.WithInput(input), tea.WithOutput(output), tea.WithAltScreen())
 	_, err = program.Run()
 	return err
 }

cmd/proxyctl/main_test.go

@@ -71,6 +71,21 @@ func TestDefaultInvocationStartsTUIWithNoProfileState(t *testing.T) {
 	}
 }
 
+func TestDefaultInvocationUsesAlternateScreenAndRestoresItOnExit(t *testing.T) {
+	t.Setenv("XDG_CONFIG_HOME", t.TempDir())
+	var output bytes.Buffer
+	if err := runWithSystemTargets(nil, strings.NewReader("q"), &output, []target.Target{}); err != nil {
+		t.Fatalf("run proxyctl: %v", err)
+	}
+	frame := output.String()
+	if !strings.Contains(frame, "\x1b[?1049h") {
+		t.Fatalf("default TUI did not enter the alternate screen: %q", frame)
+	}
+	if !strings.Contains(frame, "\x1b[?1049l") {
+		t.Fatalf("default TUI did not restore the previous screen: %q", frame)
+	}
+}
+
 func TestDefaultInvocationLoadsPersistedActiveProfile(t *testing.T) {
 	xdg := t.TempDir()
 	t.Setenv("XDG_CONFIG_HOME", xdg)