Add reply shortcut for messages

lib/screens/messages_tab.dart

@@ -304,6 +304,51 @@ class _MessagesTabState extends State<MessagesTab> {
     if (!mounted) return;
   }
 
+  Future<void> _replyToMessage(Message message) async {
+    final l10n = AppLocalizations.of(context)!;
+    final contactsProvider = context.read<ContactsProvider>();
+
+    String destinationType;
+    Contact? recipient;
+
+    if (message.isChannelMessage) {
+      final channelIdx = message.channelIdx ?? 0;
+      destinationType = MessageDestinationPreferences.destinationTypeChannel;
+
+      if (channelIdx != 0) {
+        recipient = contactsProvider.channels.where((contact) {
+          return contact.publicKey.length > 1 &&
+              contact.publicKey[1] == channelIdx;
+        }).firstOrNull;
+
+        if (recipient == null) {
+          ToastLogger.error(context, l10n.cannotReplyContactNotFound);
+          return;
+        }
+      }
+    } else {
+      final senderPrefix = message.senderPublicKeyPrefix;
+      if (senderPrefix == null || senderPrefix.length < 6) {
+        ToastLogger.error(context, l10n.cannotReplySenderMissing);
+        return;
+      }
+
+      recipient = contactsProvider.findContactByPrefix(senderPrefix);
+      if (recipient == null) {
+        ToastLogger.error(context, l10n.cannotReplyContactNotFound);
+        return;
+      }
+
+      destinationType = recipient.isRoom
+          ? MessageDestinationPreferences.destinationTypeRoom
+          : MessageDestinationPreferences.destinationTypeContact;
+    }
+
+    await _onRecipientSelected(destinationType, recipient);
+    if (!mounted) return;
+    _focusNode.requestFocus();
+  }
+
   /// Get icon for current destination type
   IconData _getDestinationIcon() {
     if (_destinationType ==
@@ -1538,6 +1583,7 @@ class _MessagesTabState extends State<MessagesTab> {
                   onRefresh: _handleRefresh,
                   onNavigateToMap: widget.onNavigateToMap,
                   onMessageTap: _handleMessageTap,
+                  onReplyToMessage: _replyToMessage,
                 ),
               ),
               Positioned(

lib/widgets/messages/message_bubble.dart

@@ -44,6 +44,7 @@ import 'system_message_bubble.dart';
 class MessageBubble extends StatefulWidget {
   final Message message;
   final VoidCallback? onTap;
+  final VoidCallback? onReply;
   final bool isHighlighted;
   final VoidCallback? onNavigateToMap;
 
@@ -54,6 +55,7 @@ class MessageBubble extends StatefulWidget {
     super.key,
     required this.message,
     this.onTap,
+    this.onReply,
     this.isHighlighted = false,
     this.onNavigateToMap,
     this.isCompact = false,
@@ -209,6 +211,15 @@ class _MessageBubbleState extends State<MessageBubble> {
         child: Column(
           mainAxisSize: MainAxisSize.min,
           children: [
+            if (!isOwnMessage && widget.onReply != null)
+              ListTile(
+                leading: const Icon(Icons.reply),
+                title: Text(AppLocalizations.of(context)!.reply),
+                onTap: () {
+                  Navigator.pop(context);
+                  widget.onReply?.call();
+                },
+              ),
             // Copy text option
             ListTile(
               leading: const Icon(Icons.copy),

lib/widgets/messages/messages_content.dart

@@ -14,6 +14,7 @@ class MessagesContent extends StatelessWidget {
   final Future<void> Function() onRefresh;
   final VoidCallback? onNavigateToMap;
   final ValueChanged<Message>? onMessageTap;
+  final ValueChanged<Message>? onReplyToMessage;
 
   const MessagesContent({
     super.key,
@@ -24,6 +25,7 @@ class MessagesContent extends StatelessWidget {
     required this.onRefresh,
     this.onNavigateToMap,
     this.onMessageTap,
+    this.onReplyToMessage,
   });
 
   @override
@@ -86,6 +88,9 @@ class MessagesContent extends StatelessWidget {
                   onTap: onMessageTap == null
                       ? null
                       : () => onMessageTap!(message),
+                  onReply: onReplyToMessage == null
+                      ? null
+                      : () => onReplyToMessage!(message),
                 );
               },
             ),