refactored data providers with centralized cache resolution, unified UI using custom dialogs and bottom sheets, and enhanced network error handling for Dio and TLS errors

lib/view/pages/talk/widgets/chat_tile.dart

@@ -15,6 +15,7 @@ import '../../../../state/app/modules/chat_list/bloc/chat_list_bloc.dart';
 import '../../../../widget/async_action_button.dart';
 import '../../../../widget/confirm_dialog.dart';
 import '../../../../widget/debug/debug_tile.dart';
+import '../../../../widget/details_bottom_sheet.dart';
 import '../../../../widget/user_avatar.dart';
 import '../chat_view.dart';
 import '../talk_navigator.dart';
@@ -124,8 +125,9 @@ class _ChatTileState extends State<ChatTile> {
       },
       onLongPress: () {
         if (widget.disableContextActions) return;
-        showDialog(context: context, builder: (dialogCtx) => SimpleDialog(
-          children: [
+        showDetailsBottomSheet(
+          context,
+          children: (sheetCtx) => [
             if (widget.data.unreadMessages > 0)
               AsyncListTile(
                 leading: const Icon(Icons.mark_chat_read_outlined),
@@ -163,7 +165,7 @@ class _ChatTileState extends State<ChatTile> {
               leading: const Icon(Icons.delete_outline),
               title: const Text('Konversation verlassen'),
               onTap: () {
-                Navigator.of(dialogCtx).pop();
+                Navigator.of(sheetCtx).pop();
                 ConfirmDialog(
                   title: 'Chat verlassen',
                   content: 'Du benötigst ggf. eine Einladung um erneut beizutreten.',
@@ -175,9 +177,9 @@ class _ChatTileState extends State<ChatTile> {
                 ).asDialog(context);
               },
             ),
-            DebugTile(dialogCtx).jsonData(widget.data.toJson()),
+            DebugTile(sheetCtx).jsonData(widget.data.toJson()),
           ],
-        ));
+        );
       },
     );
   }