fix(wcc-dashboard): Improve scroll listener management and add new test pages

ts_web/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@design.estate/dees-wcctools',
-  version: '1.0.100',
+  version: '1.0.101',
   description: 'A set of web component tools for creating element catalogues, enabling the structured development and documentation of custom elements and pages.'
 }

ts_web/elements/wcc-dashboard.ts

@@ -38,12 +38,8 @@ export class WccDashboard extends DeesElement {
   @property()
   public warning: string = null;
   
-  @property()
-  public frameScrollY: number = 0;
-  
-  @property()
-  public sidebarScrollY: number = 0;
-  
+  private frameScrollY: number = 0;
+  private sidebarScrollY: number = 0;
   private scrollPositionsApplied: boolean = false;
   
   @queryAsync('wcc-frame')
@@ -222,8 +218,14 @@ export class WccDashboard extends DeesElement {
   }
   
   private scrollUpdateTimeout: NodeJS.Timeout;
+  private scrollListenersAttached: boolean = false;
   
   public async setupScrollListeners() {
+    // Prevent duplicate listeners
+    if (this.scrollListenersAttached) {
+      return;
+    }
+    
     const wccFrame = await this.wccFrame;
     const wccSidebar = this.shadowRoot.querySelector('wcc-sidebar');
     
@@ -233,6 +235,7 @@ export class WccDashboard extends DeesElement {
         this.frameScrollY = wccFrame.scrollTop;
         this.debouncedScrollUpdate();
       });
+      this.scrollListenersAttached = true;
     }
     
     if (wccSidebar) {

ts_web/pages/index.ts

@@ -0,0 +1 @@
+export const page1 = null;