dashboard tiles added

lib/presentation/claims_overview/claims_collection_kpi.dart

@@ -432,6 +432,10 @@ class ClaimsOverviewViewData {
         ),
       );
 
+  /// `claims_experience_summary` — rejection rate.
+  String get sidebarRejectionRate =>
+      ClaimsKpiParser.formatPercent(_expField('rejection_rate'));
+
   List<ClaimsRelationshipItem> get relationshipClaims {
     const knownSlugs = [
       'claim_amount_by_relationship',

lib/presentation/claims_overview/claims_overview_tabs.dart

@@ -291,6 +291,13 @@ class _PolicyExperienceTabState extends State<_PolicyExperienceTab>
         Icons.shopping_bag_outlined,
         ClaimsOverviewTheme.purple,
       ),
+      (
+        'Rejection Rate',
+        d.sidebarRejectionRate,
+        null,
+        Icons.cancel_outlined,
+        ClaimsOverviewTheme.red,
+      ),
     ];
 
     return _tabBodyWrapper(