fix silent onboarding drop-off in /addgamer flow

Set awaiting_addgamer_username as soon as the menu is shown so typing a
username directly (without tapping the button) is handled instead of
being silently ignored. Also stop reporting a valid username as "not
found" when Lichess returns a non-404 error (rate limit/timeout), and
surface an error message if the addgamer menu itself fails to send.

LichessClientTG_bot/bot.py

@@ -340,6 +340,11 @@ class LichessBot:
         logger.info(f"addgamer_start called for user {user_id}")
         
         lang = self.get_user_language_from_update(update)
+        # Mark that we're awaiting a username right away: the menu below is shown
+        # so a user typing the name directly (without tapping a button) is handled
+        # too, instead of being silently ignored by handle_username.
+        if context and hasattr(context, "user_data"):
+            context.user_data['awaiting_addgamer_username'] = True
         try:
             keyboard = [
                 [
@@ -365,6 +370,10 @@ class LichessBot:
             logger.error(f"Error sending addgamer menu: {e}")
             import traceback
             logger.error(traceback.format_exc())
+            try:
+                await update.message.reply_text(t('addgamer_menu_error', lang))
+            except Exception as e2:
+                logger.error(f"Failed to send addgamer menu error message: {e2}")
         # No conversation state returned; handler-based flow
         return
 
@@ -603,6 +612,14 @@ class LichessBot:
         
         # Check if user exists on Lichess
         user_exists = await self.lichess_api.check_user_exists(username)
+        if user_exists is None:
+            # Transient API failure (rate limit, network error, unexpected status) —
+            # don't tell the user the name is wrong, it may well be valid.
+            await update.message.reply_text(
+                t('lichess_temporarily_unavailable', lang) + '\n\n' + t('addgamer_prompt', lang),
+                parse_mode='HTML'
+            )
+            return
         if not user_exists:
             await update.message.reply_text(
                 t('user_not_found', lang, username=username) + '\n\n' + t('addgamer_prompt', lang),

LichessClientTG_bot/i18n.py

@@ -52,6 +52,7 @@ TRANSLATIONS = {
         'addgamer_btn_add': "➕ Add player",
         'addgamer_btn_how': "❓ How to add a player?",
         'addgamer_prompt': "👤 <b>Enter the Lichess username of the player to track:</b>",
+        'addgamer_menu_error': "❌ Something went wrong showing the menu. Please try /addgamer again, or just send the Lichess username directly.",
         'addgamer_after_help': (
             "Now send the Lichess username of the player you want to track.\n\n"
             "Example: <b>MagnusCarlsen</b>\n\n"
@@ -69,6 +70,7 @@ TRANSLATIONS = {
         'token_username_error': "❌ Failed to get username from token. Please try again.",
         'empty_username': "❌ Username cannot be empty. Please try again.",
         'user_not_found': "❌ Player {username} not found on Lichess. Check the spelling of the name.",
+        'lichess_temporarily_unavailable': "⚠️ Lichess is temporarily unavailable. Please try again in a minute.",
         'gamer_already_added': "ℹ️ Player {username} is already being tracked.\n\nTo add another player, use /addgamer",
         
         # Get gamers
@@ -189,6 +191,7 @@ TRANSLATIONS = {
         'addgamer_btn_add': "➕ Добавить игрока",
         'addgamer_btn_how': "❓ Как добавить игрока?",
         'addgamer_prompt': "👤 <b>Введите username игрока Lichess для отслеживания:</b>",
+        'addgamer_menu_error': "❌ Не удалось показать меню. Попробуйте /addgamer ещё раз, либо просто отправьте username игрока Lichess напрямую.",
         'addgamer_after_help': (
             "Теперь отправьте username игрока Lichess, которого хотите отслеживать.\n\n"
             "Пример: <b>MagnusCarlsen</b>\n\n"
@@ -206,6 +209,7 @@ TRANSLATIONS = {
         'token_username_error': "❌ Не удалось получить username из токена. Попробуйте еще раз.",
         'empty_username': "❌ Username не может быть пустым. Попробуйте еще раз.",
         'user_not_found': "❌ Игрок {username} не найден на Lichess. Проверьте правильность написания имени.",
+        'lichess_temporarily_unavailable': "⚠️ Lichess временно недоступен. Попробуйте, пожалуйста, через минуту.",
         'gamer_already_added': "ℹ️ Игрок {username} уже отслеживается.\n\nДля добавления следующего игрока воспользуйтесь /addgamer",
         
         # Get gamers

LichessClientTG_bot/lichess_api.py

@@ -145,8 +145,15 @@ class LichessAPI:
             logger.error(f"Error getting puzzles period: {e}")
             return None
     
-    async def check_user_exists(self, username: str) -> bool:
-        """Check if user exists on Lichess"""
+    async def check_user_exists(self, username: str) -> Optional[bool]:
+        """
+        Check if user exists on Lichess.
+
+        Returns True/False for a definitive answer (200/404), or None if the
+        check itself failed (rate limit, network error, unexpected status) —
+        callers must not treat None as "not found", since the username may
+        well be valid.
+        """
         await self.rate_limiter.wait_if_needed()
         try:
             async with aiohttp.ClientSession() as session:
@@ -160,10 +167,10 @@ class LichessAPI:
                         return False
                     else:
                         logger.error(f"Failed to check user existence: {response.status}")
-                        return False
+                        return None
         except Exception as e:
             logger.error(f"Error checking user existence: {e}")
-            return False
+            return None
     
     async def get_user_ratings(self, username: str) -> Optional[Dict[str, Any]]:
         """Get user ratings from Lichess API"""