feat(bot): add cancel command to conversation middleware

- Implemented a '/cancel' command in the bot's conversation middleware to allow users to exit all conversations gracefully.
- Removed the manual cancellation check from the addContact conversation, streamlining the code and improving user experience.

apps/bot/src/bot/conversations/add-contact.ts

@@ -34,11 +34,6 @@ export async function addContact(conversation: Conversation<Context, Context>, c
   // Ждем любое сообщение от пользователя
   const waitCtx = await conversation.wait();
 
-  // Проверяем команду отмены
-  if (waitCtx.message?.text === '/cancel') {
-    return ctx.reply(await conversation.external(({ t }) => t('msg-cancel')));
-  }
-
   // Проверяем, что отправлен контакт
   if (!waitCtx.message?.contact) {
     return ctx.reply(await conversation.external(({ t }) => t('msg-send-contact')));

apps/bot/src/bot/index.ts

@@ -38,7 +38,10 @@ export function createBot({ token }: Parameters_) {
     }),
   );
 
-  bot.use(grammyConversations());
+  bot.use(grammyConversations()).command('cancel', async (ctx) => {
+    await ctx.conversation.exitAll();
+    await ctx.reply(ctx.t('msg-cancel'));
+  });
 
   for (const conversation of Object.values(conversations)) {
     bot.use(createConversation(conversation));