feat: add URL state synchronization for navigation

- Added UrlStateService to sync app state with URL parameters for note selection, tags, folders, and search
- Implemented URL state effects in AppComponent to handle navigation from URL parameters
- Updated sidebar and layout components to reflect URL state changes in UI
- Added URL state updates when navigating via note selection, tag clicks, and search
- Modified note sharing to use URL parameters instead of route paths
- Added auto-opening of relevant

src/components/note-context-menu/note-context-menu.component.ts

@@ -117,7 +117,7 @@ type NoteAction =
   template: `
     <ng-container *ngIf="visible">
       <!-- Backdrop pour capter les clics extérieurs -->
-      <div class="fixed inset-0" (click)="close()" aria-hidden="true" style="z-index: 9998;"></div>
+      <div class="fixed inset-0" (click)="close()" aria-hidden="true" style="z-index: 9998; pointer-events: auto;"></div>
 
       <!-- Menu -->
       <div