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/app/features/sidebar/nimbus-sidebar.component.ts

@@ -1,4 +1,4 @@
-import { Component, EventEmitter, Input, Output, ViewChild, inject } from '@angular/core';
+import { Component, EventEmitter, Input, Output, ViewChild, inject, OnChanges, SimpleChanges } from '@angular/core';
 import { CommonModule } from '@angular/common';
 import { RouterModule } from '@angular/router';
 import { FileExplorerComponent } from '../../../components/file-explorer/file-explorer.component';
@@ -163,12 +163,13 @@ import { VaultService } from '../../../services/vault.service';
     </div>
   `
 })
-export class NimbusSidebarComponent {
+export class NimbusSidebarComponent implements OnChanges {
   @Input() vaultName = '';
   @Input() effectiveFileTree: VaultNode[] = [];
   @Input() selectedNoteId: string | null = null;
   @Input() tags: TagInfo[] = [];
   @Input() quickLinkFilter: 'favoris' | 'publish' | 'draft' | 'template' | 'task' | 'private' | 'archive' | null = null;
+  @Input() forceOpenSection: 'folders' | 'tags' | 'quick' | null = null;
 
   @Output() toggleSidebarRequest = new EventEmitter<void>();
   @Output() folderSelected = new EventEmitter<string>();
@@ -185,6 +186,19 @@ export class NimbusSidebarComponent {
   private vault = inject(VaultService);
   @ViewChild('foldersExplorer') private foldersExplorer?: FileExplorerComponent;
 
+  ngOnChanges(changes: SimpleChanges): void {
+    if (changes['forceOpenSection']) {
+      const which = this.forceOpenSection;
+      if (which === 'folders') {
+        this.open = { quick: false, folders: true, tags: false, trash: false, tests: false };
+      } else if (which === 'tags') {
+        this.open = { quick: false, folders: false, tags: true, trash: false, tests: false };
+      } else if (which === 'quick') {
+        this.open = { quick: true, folders: false, tags: false, trash: false, tests: false };
+      }
+    }
+  }
+
   onQuickLink(id: string) { this.quickLinkSelected.emit(id); }
   
   onMarkdownPlaygroundClick(): void {