chore(telegram): remove unused imports, fix exception masking, and add explicit boundary checks

plugins/_telegram_integration/api/webhook.py

@@ -20,7 +20,7 @@ class TelegramWebhook(ApiHandler):
     async def process(self, input: dict, request: Request) -> dict | Response:
         from aiogram.types import Update
 
-        from plugins._telegram_integration.helpers.bot_manager import get_bot, get_all_bots
+        from plugins._telegram_integration.helpers.bot_manager import get_bot
 
         # Identify which bot this update is for
         bot_name = request.args.get("bot", "")

plugins/_telegram_integration/helpers/handler.py

@@ -492,7 +492,10 @@ async def send_telegram_reply(
         PrintStyle.error(f"Telegram reply failed: {error}")
         return error
     finally:
-        await reply_bot.session.close()
+        try:
+            await reply_bot.session.close()
+        except Exception:
+            pass
 
 # Helpers
 

plugins/_telegram_integration/helpers/telegram_client.py

@@ -188,7 +188,7 @@ def _split_text(text: str, max_len: int) -> list[str]:
             break
         # Try to split at newline
         split_at = text.rfind("\n", 0, max_len)
-        if split_at < max_len // 2:
+        if split_at == -1 or split_at < max_len // 2:
             split_at = max_len
         chunks.append(text[:split_at])
         text = text[split_at:].lstrip("\n")