feat: payload для /start в ботах.

lib/frontend/widgets/formatted_message_text.dart

@@ -92,7 +92,7 @@ class _FormattedMessageTextState extends State<FormattedMessageText> {
     if (hasExplicitLink) return ranges;
     for (final match in linkPattern.allMatches(widget.text)) {
       final raw = match.group(0)!;
-      final target = raw.startsWith('www.') ? 'https://$raw' : raw;
+      final target = linkTarget(raw);
       ranges.add(
         FormatRange(
           format: TextFormat.link,

lib/frontend/widgets/link_text.dart

@@ -4,10 +4,14 @@ import 'package:flutter/material.dart';
 import '../../core/utils/link_opener.dart';
 
 final RegExp linkPattern = RegExp(
-  r'(https?://[^\s<>]+|www\.[^\s<>]+)',
+  r'(https?://[^\s<>]+'
+  r'|www\.[^\s<>]+'
+  r'|(?<![\w.@/-])max\.ru(?![\w.-])(?:/[^\s<>]*)?)',
   caseSensitive: false,
 );
 
+String linkTarget(String raw) => raw.contains('://') ? raw : 'https://$raw';
+
 class LinkText extends StatefulWidget {
   final String text;
   final TextStyle style;
@@ -46,7 +50,7 @@ class _LinkTextState extends State<LinkText> {
         spans.add(TextSpan(text: widget.text.substring(cursor, match.start)));
       }
       final url = match.group(0)!;
-      final target = url.startsWith('www.') ? 'https://$url' : url;
+      final target = linkTarget(url);
       final recognizer = TapGestureRecognizer()
         ..onTap = () => openExternalUrl(context, target);
       _recognizers.add(recognizer);

lib/frontend/widgets/max_link_handler.dart

@@ -33,7 +33,7 @@ Future<bool> tryHandleMaxLink(BuildContext context, String url) async {
     return _openStickerSet(context, link.url);
   }
 
-  final resolved = await LinkModule.resolve(api, link.url);
+  final resolved = await _resolve(link);
   if (!context.mounted) return true;
 
   switch (resolved) {
@@ -43,7 +43,7 @@ Future<bool> tryHandleMaxLink(BuildContext context, String url) async {
       showCustomNotification(context, message);
       return true;
     case ResolvedUser(:final contact):
-      _openContact(context, contact);
+      await _openContact(context, link, contact);
       return true;
     case ResolvedChat():
       await _openResolvedChat(context, link, resolved);
@@ -51,6 +51,13 @@ Future<bool> tryHandleMaxLink(BuildContext context, String url) async {
   }
 }
 
+Future<ResolvedLink?> _resolve(MaxLink link) async {
+  final resolved = await LinkModule.resolve(api, link.url);
+  if (link.startPayload == null || link.baseUrl == link.url) return resolved;
+  if (resolved is ResolvedChat || resolved is ResolvedUser) return resolved;
+  return LinkModule.resolve(api, link.baseUrl);
+}
+
 Future<bool> _openStickerSet(BuildContext context, String url) async {
   final path = url
       .replaceFirst(
@@ -71,12 +78,24 @@ Future<bool> _openStickerSet(BuildContext context, String url) async {
   return true;
 }
 
-void _openContact(BuildContext context, Map<dynamic, dynamic> contact) {
+Future<void> _openContact(
+  BuildContext context,
+  MaxLink link,
+  Map<dynamic, dynamic> contact,
+) async {
   final id = contact['id'];
   if (id is! int) {
     showCustomNotification(context, 'Не удалось открыть профиль');
     return;
   }
+
+  final startPayload = link.startPayload;
+  if (startPayload != null &&
+      await _startBotDialog(context, id, contact, startPayload)) {
+    return;
+  }
+  if (!context.mounted) return;
+
   unawaited(
     openContactDialogProfile(
       context,
@@ -87,6 +106,53 @@ void _openContact(BuildContext context, Map<dynamic, dynamic> contact) {
   );
 }
 
+Future<bool> _startBotDialog(
+  BuildContext context,
+  int botId,
+  Map<dynamic, dynamic> contact,
+  String startPayload,
+) async {
+  final profile = await AppDatabase.loadActiveProfile();
+  final myId = profile?.id ?? 0;
+  if (myId == 0) return false;
+
+  final chatId =
+      await AppDatabase.findDialogChatByParticipant(myId, botId) ??
+      (myId ^ botId);
+  if (chatId <= 0 || !context.mounted) return false;
+
+  _openChatAndStartBot(
+    context,
+    chatId: chatId,
+    name: _contactName(contact),
+    imageUrl: (contact['baseUrl'] as String?) ?? '',
+    chatType: 'DIALOG',
+    startPayload: startPayload,
+  );
+  return true;
+}
+
+void _openChatAndStartBot(
+  BuildContext context, {
+  required int chatId,
+  required String name,
+  required String imageUrl,
+  required String chatType,
+  required String startPayload,
+}) {
+  if (ChatScreen.startBotInVisibleChat(chatId, startPayload)) return;
+  pushSwipeable(
+    context,
+    (_) => ChatScreen(
+      chatId: chatId,
+      name: name,
+      imageUrl: imageUrl,
+      chatType: chatType,
+      botStartPayload: startPayload,
+    ),
+  );
+}
+
 Future<void> _openResolvedChat(
   BuildContext context,
   MaxLink link,
@@ -131,6 +197,19 @@ Future<void> _openResolvedChat(
     if (!context.mounted) return;
   }
 
+  final startPayload = link.startPayload;
+  if (startPayload != null && type == 'DIALOG') {
+    _openChatAndStartBot(
+      context,
+      chatId: id,
+      name: title,
+      imageUrl: icon,
+      chatType: type,
+      startPayload: startPayload,
+    );
+    return;
+  }
+
   pushSwipeable(
     context,
     (_) => ChatScreen(

lib/frontend/widgets/message_bubble.dart

@@ -752,6 +752,7 @@ class MessageBubble extends StatelessWidget {
     final contentType = _contentType;
 
     if (message.isControl) {
+      if (message.isBotStartMarker) return const SizedBox.shrink();
       const controlShape = BubbleShape.singleMiddle;
       return Padding(
         padding: EdgeInsets.only(