Merge pull request 'fix: properly close telegram client session to prevent resource leak (issue #52)' (#56) from feature/issue-52-aiohttp-cleanup into main

Reviewed-on: #56

src/main.py

@@ -549,7 +549,9 @@ async def run(settings: Settings) -> None:
             except TimeoutError:
                 pass  # Normal — timeout means it's time for next cycle
     finally:
+        # Clean up resources
         await broker.close()
+        await telegram.close()
         db_conn.close()
         logger.info("The Ouroboros rests.")