feat(#131): channel reply-UX — composer focus + route reply (#106)

- Reply long-press drops the cursor into the composer (post-frame focus). (#131)
- "Reply with route" sends `@[sender] ↩ N hops · via <path>`, byte-truncated with `…`, Cyr2Lat-aware. (#106)

Gemini (fix-then-ship): the unawaited `sendChannelMessage` in `_sendRouteReply` mirrors the established `_sendMessage` convention — failure surfaces via the visible message's delivery status, not the returned Future; holistic channel-send error handling is tracked in #133 per maintainer decision. O(n^2) path truncation is negligible on the <=160-byte payload; the `w<1` guard is a defensive div-by-zero (pathHashByteWidth is 1-3).

Closes #131
Closes #106
Part of #132

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

lib/l10n/app_en.arb

@@ -702,6 +702,7 @@
   },
   "chat_sendGif": "Send GIF",
   "chat_reply": "Reply",
+  "chat_replyWithRoute": "Reply with route",
   "chat_addReaction": "Add Reaction",
   "chat_me": "Me",
   "emojiCategorySmileys": "Smileys",

lib/l10n/app_localizations.dart

@@ -2536,6 +2536,12 @@ abstract class AppLocalizations {
   /// **'Reply'**
   String get chat_reply;
 
+  /// No description provided for @chat_replyWithRoute.
+  ///
+  /// In en, this message translates to:
+  /// **'Reply with route'**
+  String get chat_replyWithRoute;
+
   /// No description provided for @chat_addReaction.
   ///
   /// In en, this message translates to:

lib/l10n/app_localizations_bg.dart

@@ -1380,6 +1380,9 @@ class AppLocalizationsBg extends AppLocalizations {
   @override
   String get chat_reply => 'Отговори';
 
+  @override
+  String get chat_replyWithRoute => 'Reply with route';
+
   @override
   String get chat_addReaction => 'Добави Реакция';
 

lib/l10n/app_localizations_de.dart

@@ -1379,6 +1379,9 @@ class AppLocalizationsDe extends AppLocalizations {
   @override
   String get chat_reply => 'Beantworten';
 
+  @override
+  String get chat_replyWithRoute => 'Reply with route';
+
   @override
   String get chat_addReaction => 'Reaktion hinzufügen';
 

lib/l10n/app_localizations_en.dart

@@ -1351,6 +1351,9 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get chat_reply => 'Reply';
 
+  @override
+  String get chat_replyWithRoute => 'Reply with route';
+
   @override
   String get chat_addReaction => 'Add Reaction';
 

lib/l10n/app_localizations_es.dart

@@ -1378,6 +1378,9 @@ class AppLocalizationsEs extends AppLocalizations {
   @override
   String get chat_reply => 'Responder';
 
+  @override
+  String get chat_replyWithRoute => 'Reply with route';
+
   @override
   String get chat_addReaction => 'Añadir Reacción';
 

lib/l10n/app_localizations_fr.dart

@@ -1383,6 +1383,9 @@ class AppLocalizationsFr extends AppLocalizations {
   @override
   String get chat_reply => 'Répondre';
 
+  @override
+  String get chat_replyWithRoute => 'Reply with route';
+
   @override
   String get chat_addReaction => 'Ajouter une Réaction';
 

lib/l10n/app_localizations_hu.dart

@@ -1385,6 +1385,9 @@ class AppLocalizationsHu extends AppLocalizations {
   @override
   String get chat_reply => 'Válasz';
 
+  @override
+  String get chat_replyWithRoute => 'Reply with route';
+
   @override
   String get chat_addReaction => 'Hozzon létre reakciót';
 

lib/l10n/app_localizations_it.dart

@@ -1380,6 +1380,9 @@ class AppLocalizationsIt extends AppLocalizations {
   @override
   String get chat_reply => 'Rispondi';
 
+  @override
+  String get chat_replyWithRoute => 'Reply with route';
+
   @override
   String get chat_addReaction => 'Aggiungi Reazione';
 

lib/l10n/app_localizations_ja.dart

@@ -1316,6 +1316,9 @@ class AppLocalizationsJa extends AppLocalizations {
   @override
   String get chat_reply => '返信';
 
+  @override
+  String get chat_replyWithRoute => 'Reply with route';
+
   @override
   String get chat_addReaction => '反応を追加';
 

lib/l10n/app_localizations_ko.dart

@@ -1311,6 +1311,9 @@ class AppLocalizationsKo extends AppLocalizations {
   @override
   String get chat_reply => '답변';
 
+  @override
+  String get chat_replyWithRoute => 'Reply with route';
+
   @override
   String get chat_addReaction => '댓글 추가';
 

lib/l10n/app_localizations_nl.dart

@@ -1367,6 +1367,9 @@ class AppLocalizationsNl extends AppLocalizations {
   @override
   String get chat_reply => 'Reageren';
 
+  @override
+  String get chat_replyWithRoute => 'Reply with route';
+
   @override
   String get chat_addReaction => 'Reactie toevoegen';
 

lib/l10n/app_localizations_pl.dart

@@ -1390,6 +1390,9 @@ class AppLocalizationsPl extends AppLocalizations {
   @override
   String get chat_reply => 'Odpowiedz';
 
+  @override
+  String get chat_replyWithRoute => 'Reply with route';
+
   @override
   String get chat_addReaction => 'Dodaj Reakcję';
 

lib/l10n/app_localizations_pt.dart

@@ -1377,6 +1377,9 @@ class AppLocalizationsPt extends AppLocalizations {
   @override
   String get chat_reply => 'Responder';
 
+  @override
+  String get chat_replyWithRoute => 'Reply with route';
+
   @override
   String get chat_addReaction => 'Adicionar Reação';
 

lib/l10n/app_localizations_ru.dart

@@ -1378,6 +1378,9 @@ class AppLocalizationsRu extends AppLocalizations {
   @override
   String get chat_reply => 'Ответить';
 
+  @override
+  String get chat_replyWithRoute => 'Reply with route';
+
   @override
   String get chat_addReaction => 'Добавить реакцию';
 

lib/l10n/app_localizations_sk.dart

@@ -1367,6 +1367,9 @@ class AppLocalizationsSk extends AppLocalizations {
   @override
   String get chat_reply => 'Odpovedať';
 
+  @override
+  String get chat_replyWithRoute => 'Reply with route';
+
   @override
   String get chat_addReaction => 'Pridať Reakciu';
 

lib/l10n/app_localizations_sl.dart

@@ -1365,6 +1365,9 @@ class AppLocalizationsSl extends AppLocalizations {
   @override
   String get chat_reply => 'Odgovori';
 
+  @override
+  String get chat_replyWithRoute => 'Reply with route';
+
   @override
   String get chat_addReaction => 'Dodaj reakcijo';
 

lib/l10n/app_localizations_sv.dart

@@ -1359,6 +1359,9 @@ class AppLocalizationsSv extends AppLocalizations {
   @override
   String get chat_reply => 'Svara';
 
+  @override
+  String get chat_replyWithRoute => 'Reply with route';
+
   @override
   String get chat_addReaction => 'Lägg till reaktion';
 

lib/l10n/app_localizations_uk.dart

@@ -1372,6 +1372,9 @@ class AppLocalizationsUk extends AppLocalizations {
   @override
   String get chat_reply => 'Відповісти';
 
+  @override
+  String get chat_replyWithRoute => 'Reply with route';
+
   @override
   String get chat_addReaction => 'Додати реакцію';
 

lib/l10n/app_localizations_zh.dart

@@ -1297,6 +1297,9 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get chat_reply => '回复';
 
+  @override
+  String get chat_replyWithRoute => 'Reply with route';
+
   @override
   String get chat_addReaction => '添加表情';
 

lib/screens/channel_chat_screen.dart

@@ -185,6 +185,11 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
     setState(() {
       _replyingToMessage = message;
     });
+    // Drop the cursor straight into the composer (the reply banner has just
+    // laid out, so focus after the frame). Saves a click/tab on reply. (#131)
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      if (mounted) _textFieldFocusNode.requestFocus();
+    });
   }
 
   void _cancelReply() {
@@ -1219,6 +1224,34 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
     );
   }
 
+  /// One-click reply quoting the route a message took — hop count + path,
+  /// truncated with … to fit the channel byte budget, fired directly. (#106)
+  void _sendRouteReply(ChannelMessage message) {
+    final connector = context.read<MeshCoreConnector>();
+    final w = connector.pathHashByteWidth;
+    final hops = message.pathBytes.length ~/ (w < 1 ? 1 : w);
+    final prefix =
+        '@[${message.senderName}] ↩ ${context.l10n.chat_hopsCount(hops)} · via ';
+    final maxBytes = maxChannelMessageBytes(connector.selfName);
+
+    var path = _formatPathPrefixes(message.pathBytes, w);
+    var truncated = false;
+    String outbound() => connector.prepareChannelOutboundText(
+      widget.channel.index,
+      '$prefix$path${truncated ? '…' : ''}',
+    );
+    while (path.isNotEmpty && utf8.encode(outbound()).length > maxBytes) {
+      path = path.substring(0, path.length - 1);
+      truncated = true;
+    }
+
+    var text = '$prefix$path${truncated ? '…' : ''}';
+    if (connector.isChannelCyr2LatEnabled(widget.channel.index)) {
+      text = Cyr2Lat.encode(text);
+    }
+    connector.sendChannelMessage(widget.channel, text);
+  }
+
   void _ensureDateFormats(BuildContext context) {
     final locale = Localizations.localeOf(context).toString();
     final clock = context.read<AppSettingsService>().settings.clockFormat;
@@ -1394,6 +1427,15 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
                 _setReplyingTo(message);
               },
             ),
+            if (message.pathBytes.isNotEmpty)
+              ListTile(
+                leading: const Icon(Icons.alt_route),
+                title: Text(context.l10n.chat_replyWithRoute),
+                onTap: () {
+                  Navigator.pop(sheetContext);
+                  _sendRouteReply(message);
+                },
+              ),
             if (PlatformInfo.isDesktop)
               ListTile(
                 leading: const Icon(Icons.route),

untranslated.json

@@ -6,6 +6,7 @@
     "appSettings_clockSystem",
     "appSettings_clock12h",
     "appSettings_clock24h",
+    "chat_replyWithRoute",
     "channel_heardTooltip",
     "snrIndicator_noNeighbors"
   ],
@@ -17,6 +18,7 @@
     "appSettings_clockSystem",
     "appSettings_clock12h",
     "appSettings_clock24h",
+    "chat_replyWithRoute",
     "channel_heardTooltip",
     "snrIndicator_noNeighbors"
   ],
@@ -28,6 +30,7 @@
     "appSettings_clockSystem",
     "appSettings_clock12h",
     "appSettings_clock24h",
+    "chat_replyWithRoute",
     "channel_heardTooltip",
     "snrIndicator_noNeighbors"
   ],
@@ -39,6 +42,7 @@
     "appSettings_clockSystem",
     "appSettings_clock12h",
     "appSettings_clock24h",
+    "chat_replyWithRoute",
     "channel_heardTooltip",
     "snrIndicator_noNeighbors"
   ],
@@ -50,6 +54,7 @@
     "appSettings_clockSystem",
     "appSettings_clock12h",
     "appSettings_clock24h",
+    "chat_replyWithRoute",
     "channel_heardTooltip",
     "snrIndicator_noNeighbors"
   ],
@@ -61,6 +66,7 @@
     "appSettings_clockSystem",
     "appSettings_clock12h",
     "appSettings_clock24h",
+    "chat_replyWithRoute",
     "channel_heardTooltip",
     "snrIndicator_noNeighbors"
   ],
@@ -72,6 +78,7 @@
     "appSettings_clockSystem",
     "appSettings_clock12h",
     "appSettings_clock24h",
+    "chat_replyWithRoute",
     "channel_heardTooltip",
     "snrIndicator_noNeighbors"
   ],
@@ -83,6 +90,7 @@
     "appSettings_clockSystem",
     "appSettings_clock12h",
     "appSettings_clock24h",
+    "chat_replyWithRoute",
     "channel_heardTooltip",
     "snrIndicator_noNeighbors"
   ],
@@ -94,6 +102,7 @@
     "appSettings_clockSystem",
     "appSettings_clock12h",
     "appSettings_clock24h",
+    "chat_replyWithRoute",
     "channel_heardTooltip",
     "snrIndicator_noNeighbors"
   ],
@@ -105,6 +114,7 @@
     "appSettings_clockSystem",
     "appSettings_clock12h",
     "appSettings_clock24h",
+    "chat_replyWithRoute",
     "channel_heardTooltip",
     "snrIndicator_noNeighbors"
   ],
@@ -116,6 +126,7 @@
     "appSettings_clockSystem",
     "appSettings_clock12h",
     "appSettings_clock24h",
+    "chat_replyWithRoute",
     "channel_heardTooltip",
     "snrIndicator_noNeighbors"
   ],
@@ -127,6 +138,7 @@
     "appSettings_clockSystem",
     "appSettings_clock12h",
     "appSettings_clock24h",
+    "chat_replyWithRoute",
     "channel_heardTooltip",
     "snrIndicator_noNeighbors"
   ],
@@ -138,6 +150,7 @@
     "appSettings_clockSystem",
     "appSettings_clock12h",
     "appSettings_clock24h",
+    "chat_replyWithRoute",
     "channel_heardTooltip",
     "snrIndicator_noNeighbors"
   ],
@@ -149,6 +162,7 @@
     "appSettings_clockSystem",
     "appSettings_clock12h",
     "appSettings_clock24h",
+    "chat_replyWithRoute",
     "channel_heardTooltip",
     "snrIndicator_noNeighbors"
   ],
@@ -160,6 +174,7 @@
     "appSettings_clockSystem",
     "appSettings_clock12h",
     "appSettings_clock24h",
+    "chat_replyWithRoute",
     "channel_heardTooltip",
     "snrIndicator_noNeighbors"
   ],
@@ -171,6 +186,7 @@
     "appSettings_clockSystem",
     "appSettings_clock12h",
     "appSettings_clock24h",
+    "chat_replyWithRoute",
     "channel_heardTooltip",
     "snrIndicator_noNeighbors"
   ],
@@ -182,6 +198,7 @@
     "appSettings_clockSystem",
     "appSettings_clock12h",
     "appSettings_clock24h",
+    "chat_replyWithRoute",
     "channel_heardTooltip",
     "snrIndicator_noNeighbors"
   ]