respect smaz encoding in message byte length calculation.

lib/screens/channel_chat_screen.dart

@@ -10,6 +10,7 @@ import 'package:provider/provider.dart';
 import '../connector/meshcore_connector.dart';
 import '../utils/platform_info.dart';
 import '../helpers/chat_scroll_controller.dart';
+import '../helpers/smaz.dart';
 import '../connector/meshcore_protocol.dart';
 import '../helpers/gif_helper.dart';
 import '../helpers/reaction_helper.dart';
@@ -1099,6 +1100,10 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
                       focusNode: _textFieldFocusNode,
                       hintText: context.l10n.chat_typeMessage,
                       onSubmitted: (_) => _sendMessage(),
+                      encoder:
+                          connector.isChannelSmazEnabled(widget.channel.index)
+                          ? Smaz.encodeIfSmaller
+                          : null,
                       decoration: InputDecoration(
                         hintText: context.l10n.chat_typeMessage,
                         border: OutlineInputBorder(
@@ -1194,7 +1199,11 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
     }
 
     final maxBytes = maxChannelMessageBytes(connector.selfName);
-    if (utf8.encode(messageText).length > maxBytes) {
+    final outboundText = connector.prepareChannelOutboundText(
+      widget.channel.index,
+      messageText,
+    );
+    if (utf8.encode(outboundText).length > maxBytes) {
       showDismissibleSnackBar(
         context,
         content: Text(context.l10n.chat_messageTooLong(maxBytes)),

lib/screens/chat_screen.dart

@@ -14,6 +14,7 @@ import 'package:latlong2/latlong.dart';
 import '../connector/meshcore_connector.dart';
 import '../connector/meshcore_protocol.dart';
 import '../helpers/reaction_helper.dart';
+import '../helpers/smaz.dart';
 import '../widgets/message_status_icon.dart';
 import '../helpers/chat_scroll_controller.dart';
 import '../helpers/gif_helper.dart';
@@ -573,6 +574,12 @@ class _ChatScreenState extends State<ChatScreen> {
                     focusNode: _textFieldFocusNode,
                     hintText: context.l10n.chat_typeMessage,
                     onSubmitted: (_) => _sendMessage(connector),
+                    encoder:
+                        connector.isContactSmazEnabled(
+                          widget.contact.publicKeyHex,
+                        )
+                        ? Smaz.encodeIfSmaller
+                        : null,
                     decoration: InputDecoration(
                       hintText: context.l10n.chat_typeMessage,
                       border: OutlineInputBorder(
@@ -674,7 +681,11 @@ class _ChatScreenState extends State<ChatScreen> {
       }
     }
     final maxBytes = maxContactMessageBytes();
-    if (utf8.encode(outgoingText).length > maxBytes) {
+    final outboundText = connector.prepareContactOutboundText(
+      _resolveContact(connector),
+      outgoingText,
+    );
+    if (utf8.encode(outboundText).length > maxBytes) {
       showDismissibleSnackBar(
         context,
         content: Text(context.l10n.chat_messageTooLong(maxBytes)),