feat(Header): ✨ Add drag and no-drag regions for desktop app

* Implemented `.hd-drag` and `.hd-btns` classes for better window management in the Electron app.
* Updated `Header.tsx` to utilize these new classes for improved user experience.

.github/workflows/build-desktop.yml

@@ -25,7 +25,7 @@ jobs:
     - name: Setup Node.js
       uses: actions/setup-node@v4
       with:
-        node-version: '18'
+        node-version: '20'
         cache: 'npm'
         
     - name: Install dependencies