feat: tela de apps com logos/menu de exclusao, correcao de tema nas mini apps e sidebar de navegacao

lib/pages/apps/miniapp_shell_native.dart

@@ -2,8 +2,8 @@
 //
 // SPDX-License-Identifier: AGPL-3.0-or-later
 
-import 'package:flutter/material.dart';
 import 'package:flutter_inappwebview/flutter_inappwebview.dart';
+import 'package:material_ui/material_ui.dart';
 import 'package:tatchat/l10n/l10n.dart';
 
 /// Native implementation of [MiniAppShell] using an isolated [InAppWebView].
@@ -42,7 +42,7 @@ class _MiniAppShellState extends State<MiniAppShell> {
 <script>
 window.addEventListener('message', function (event) {
   var msg = event.data;
-  if (!msg || msg.api !== 'fromMiniApp') return;
+  if (!msg || msg.api !== 'fromMiniApp' || msg.response !== undefined) return;
   window.flutter_inappwebview.callHandler('$_handlerName', msg).then(function (response) {
     var reply = Object.assign({}, msg, { response: response });
     window.postMessage(reply, '*');
@@ -63,8 +63,9 @@ window.addEventListener('message', function (event) {
     return Scaffold(
       appBar: AppBar(
         title: Text(widget.title),
-        backgroundColor: theme.colorScheme.primary,
-        foregroundColor: theme.colorScheme.onPrimary,
+        backgroundColor: theme.colorScheme.surface,
+        surfaceTintColor: Colors.transparent,
+        foregroundColor: theme.colorScheme.onSurface,
         actions: [
           IconButton(
             tooltip: L10n.of(context).refresh,