refactor: replace broken enum ClientAreaOption enum with a number

src/kwinscript/driver/surface.ts

@@ -56,9 +56,11 @@ export class DriverSurfaceImpl implements DriverSurface {
       this.config.ignoreScreen.indexOf(screen) >= 0;
 
     this.workingArea = Rect.fromQRect(
-      this.proxy
-        .workspace()
-        .clientArea(this.kwinApi.KWin.PlacementArea, screen, desktop)
+      this.proxy.workspace().clientArea(
+        0, // This is PlacementArea
+        screen,
+        desktop
+      )
     );
   }
 

src/kwinscript/driver/window.ts

@@ -276,10 +276,8 @@ export class DriverWindowImpl implements DriverWindow {
       geometry = this.adjustGeometry(geometry);
       if (this.config.preventProtrusion) {
         const area = Rect.fromQRect(
-          this.proxy
-            .workspace()
-            .clientArea(
-              this.kwinApi.KWin.PlacementArea,
+          this.proxy.workspace().clientArea(
+            0, // This is placement area
             this.client.screen,
             this.proxy.workspace().currentDesktop
           )