stabilized LoadableStateConsumer widget hierarchy to prevent scroll resets, added pull-to-refresh configuration, and disabled it in chat view

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

@@ -21,6 +21,7 @@ class LoadableStateConsumer<
   final Widget Function(TState state, bool loading) child;
   final void Function(TState state)? onLoad;
   final bool wrapWithScrollView;
+  final bool enablePullToRefresh;
 
   /// Optional predicate for callers whose [TState] always contains a non-null
   /// envelope but where actual content (e.g. a nested response) is loaded
@@ -33,6 +34,7 @@ class LoadableStateConsumer<
     required this.child,
     this.onLoad,
     this.wrapWithScrollView = false,
+    this.enablePullToRefresh = true,
     this.isReady,
     super.key,
   });
@@ -62,29 +64,34 @@ class LoadableStateConsumer<
     final showError = hasError && !hasContent;
     final showErrorBar = hasError && hasContent;
 
-    var childWidget = ConditionalWrapper(
+    // Keep the wrapper hierarchy stable across refresh cycles. The bloc clears
-      condition: loadableState.reFetch != null,
+    // reFetch to null while a refetch is in flight and restores it on
-      wrapper: (child) => RefreshIndicator(
+    // completion; flipping the RefreshIndicator in and out on that signal
-        onRefresh: () {
+    // would change the widget tree under the ListView and reset its scroll
-          if (loadableState.reFetch != null) loadableState.reFetch!();
+    // position every refresh.
-          return Future.value();
+    final content = SizedBox(
-        },
+      height: MediaQuery.of(context).size.height,
-        child: ConditionalWrapper(
+      child: hasContent
-          condition: wrapWithScrollView,
+          ? child(typedData as TState, isLoading)
-          wrapper: (child) => SingleChildScrollView(
+          : const SizedBox.shrink(),
-            physics: const AlwaysScrollableScrollPhysics(),
-            child: child,
-          ),
-          child: child,
-        ),
-      ),
-      child: SizedBox(
-        height: MediaQuery.of(context).size.height,
-        child: hasContent
-            ? child(typedData as TState, isLoading)
-            : const SizedBox.shrink(),
-      ),
     );
+    final scrollable = ConditionalWrapper(
+      condition: wrapWithScrollView,
+      wrapper: (child) => SingleChildScrollView(
+        physics: const AlwaysScrollableScrollPhysics(),
+        child: child,
+      ),
+      child: content,
+    );
+    final childWidget = enablePullToRefresh
+        ? RefreshIndicator(
+            onRefresh: () {
+              loadableState.reFetch?.call();
+              return Future.value();
+            },
+            child: scrollable,
+          )
+        : scrollable;
 
     return BlocModule<LoadableStateBloc, LoadableStateState>(
       create: (context) => LoadableStateBloc(),

lib/view/pages/talk/chat_view.dart

@@ -375,6 +375,7 @@ class _ChatViewState extends State<ChatView> with RouteAware {
               isReady: (state) =>
                   state.chatResponse != null &&
                   state.currentToken == widget.room.token,
+              enablePullToRefresh: false,
               child: (state, _) {
                 final items =
                     _buildMessages(state.chatResponse!).reversed.toList();