refactor: migrate to VS Code titlebar drag region pattern

packages/app/src/desktop/electron/window.ts

@@ -1,4 +1,8 @@
-import { getDesktopHost, type DesktopWindowBridge } from "@/desktop/host";
+import {
+  getDesktopHost,
+  type DesktopWindowBridge,
+  type DesktopWindowControlsOverlayUpdate,
+} from "@/desktop/host";
 
 export function getDesktopWindow(): DesktopWindowBridge | null {
   const getter = getDesktopHost()?.window?.getCurrentWindow;
@@ -28,11 +32,13 @@ export async function isDesktopFullscreen(): Promise<boolean> {
   return await win.isFullscreen();
 }
 
-export async function setDesktopTitleBarTheme(theme: "light" | "dark"): Promise<void> {
+export async function updateDesktopWindowControls(
+  update: DesktopWindowControlsOverlayUpdate,
+): Promise<void> {
   const win = getDesktopWindow();
-  if (!win || typeof win.setTitleBarTheme !== "function") {
+  if (!win || typeof win.updateWindowControls !== "function") {
     return;
   }
 
-  await win.setTitleBarTheme(theme);
+  await win.updateWindowControls(update);
 }