style: apply black formatting

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: nikit34

telegram_mcp/runner.py

@@ -28,7 +28,7 @@ async def _connect_authorized_client(label, client) -> None:
         except AuthKeyDuplicatedError:
             if attempt >= max_attempts:
                 raise
-            delay = min(2 ** attempt, 15)
+            delay = min(2**attempt, 15)
             print(
                 f"AuthKeyDuplicatedError connecting '{label}' (attempt "
                 f"{attempt}/{max_attempts}): session in use from another IP. "

tests/test_session_pool.py

@@ -5,7 +5,6 @@
 
 from telegram_mcp import runner, runtime
 
-
 # --- _parse_session_pool -----------------------------------------------------