chore: add preferredDarkColorTheme Nord to VSCode settings

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.config/Code/User/settings.json

@@ -1,5 +1,6 @@
 {
     "workbench.colorTheme": "Nord",
+    "workbench.preferredDarkColorTheme": "Nord",
     "workbench.externalBrowser": "chrome",
     "explorer.confirmDragAndDrop": false,
     "explorer.confirmPasteNative": false,