feat: marcar legenda com markdown, barra de ações nos posts do canal e limites de mensagem na modal

lib/pages/mural/mural_chat_page.dart

@@ -10,6 +10,7 @@ import 'package:image_picker/image_picker.dart';
 import 'package:linkify/linkify.dart';
 import 'package:material_ui/material_ui.dart';
 import 'package:matrix/matrix.dart';
+import 'package:tatchat/config/themes.dart';
 import 'package:tatchat/l10n/l10n.dart';
 import 'package:tatchat/pages/chat/send_file_dialog.dart';
 import 'package:tatchat/pages/chat/sticker_picker_dialog.dart';
@@ -259,17 +260,22 @@ class _MuralChatViewState extends State<MuralChatView> {
       useSafeArea: true,
       isScrollControlled: true,
       backgroundColor: theme.colorScheme.surface,
-      builder: (context) => ConstrainedBox(
-        constraints: BoxConstraints(
-          maxHeight:
-              MediaQuery.viewInsetsOf(context).bottom +
-              (MediaQuery.sizeOf(context).height * 0.92),
+      builder: (context) => AnimatedPadding(
+        duration: FluffyThemes.animationDuration,
+        curve: FluffyThemes.animationCurve,
+        padding: EdgeInsets.only(
+          bottom: MediaQuery.viewInsetsOf(context).bottom,
         ),
-        child: _PostViewer(
-          key: Key('post_viewer_${event.eventId}'),
-          event: event,
-          room: room,
-          timeline: timeline,
+        child: ConstrainedBox(
+          constraints: BoxConstraints(
+            maxHeight: MediaQuery.sizeOf(context).height * 0.92,
+          ),
+          child: _PostViewer(
+            key: Key('post_viewer_${event.eventId}'),
+            event: event,
+            room: room,
+            timeline: timeline,
+          ),
         ),
       ),
     );