logic improvements

apps/weblibre/lib/features/geckoview/domain/repositories/tab.dart

@@ -984,21 +984,12 @@ class TabRepository extends _$TabRepository {
                   await selectTab(newTabId);
                 }
               } else {
-                final tabContainerId = await ref
-                    .read(tabDataRepositoryProvider.notifier)
-                    .getTabContainerId(currentTabState.id);
-
-                if (!ref.mounted) {
-                  return;
-                }
-
                 final latestTabState = ref.read(tabStatesProvider)[tabId];
                 if (latestTabState == null) {
                   logger.w('Could not get tab for assignement ${event.url}');
                   return;
                 }
 
-                if (targetContainerId != tabContainerId) {
                 if (originUri == null) {
                   await ref
                       .read(tabDataRepositoryProvider.notifier)
@@ -1023,7 +1014,6 @@ class TabRepository extends _$TabRepository {
                 }
               }
             }
-            }
           } else {
             logger.w('Could not get tab for assignement ${tabState?.url}');
           }

apps/weblibre/lib/features/geckoview/features/tabs/domain/repositories/tab.dart

@@ -61,6 +61,14 @@ class TabDataRepository extends _$TabDataRepository {
 
     final currentContainerData = await getTabContainerData(tabId);
 
+    // The tab is already in the target container, so there is nothing to
+    // reconcile. This guards against churn when an async assignment races a
+    // move that already landed the tab in [targetContainer] (recreating it
+    // here would spawn a redundant tab and re-trigger its load).
+    if (currentContainerData?.id == targetContainer.id) {
+      return;
+    }
+
     final sameContext =
         targetContainer.metadata.contextualIdentity ==
         currentContainerData?.metadata.contextualIdentity;