simplified loadable state logic by removing connectivity debouncing and inlining indicator helpers; updated error bar visibility and chat list polling behavior

lib/state/app/infrastructure/loadable_state/view/loadable_state_consumer.dart

@@ -62,8 +62,8 @@ class LoadableStateConsumer<
 
     final showPrimaryLoading = isLoading && !hasContent;
     final showBackgroundLoading = isLoading && hasContent;
-    final showError = hasError && !hasContent && !isLoading;
-    final showErrorBar = hasError && hasContent && !isLoading;
+    final showError = hasError && !hasContent;
+    final showErrorBar = hasError && hasContent;
 
     // Keep the wrapper hierarchy stable across refresh cycles: reFetch flips to
     // null mid-refetch, and toggling the RefreshIndicator on that signal would
@@ -102,7 +102,6 @@ class LoadableStateConsumer<
             LoadableStateErrorBar(
               visible: showErrorBar,
               hasContent: hasContent,
-              loading: isLoading,
               message: loadableState.error?.message,
               technicalDetails: loadableState.error?.technicalDetails,
               lastUpdated: loadableState.lastFetch,

lib/state/app/infrastructure/loadable_state/view/loadable_state_error_bar.dart

@@ -5,19 +5,16 @@ import 'package:flutter_bloc/flutter_bloc.dart';
 
 import '../../../../../widget/info_dialog.dart';
 import '../bloc/loadable_state_bloc.dart';
-import '../loadable_state_indicators.dart';
 
 class LoadableStateErrorBar extends StatelessWidget {
   final bool visible;
   final bool hasContent;
-  final bool loading;
   final String? message;
   final String? technicalDetails;
   final int? lastUpdated;
   const LoadableStateErrorBar({
     required this.visible,
     this.hasContent = false,
-    this.loading = false,
     this.message,
     this.technicalDetails,
     this.lastUpdated,
@@ -29,12 +26,8 @@ class LoadableStateErrorBar extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     final bloc = context.watch<LoadableStateBloc>();
-    final isOfflineWithCache = shouldShowOfflineBar(
-      hasContent: hasContent,
-      loading: loading,
-      connectivityKnown: bloc.connectivityStatusKnown(),
-      connected: bloc.isConnected(),
-    );
+    final isOfflineWithCache =
+        hasContent && bloc.connectivityStatusKnown() && !bloc.isConnected();
     final shouldShow = visible || isOfflineWithCache;
 
     return AnimatedSize(