fixed bot and server connectivity issues

backend/src/presentation/main.py

@@ -29,7 +29,6 @@ async def lifespan(app: FastAPI):
     except Exception as e:
         print(f"Примечание при создании таблиц: {e}")
     yield
-    # Cleanup container if needed
     if hasattr(app.state, 'container') and hasattr(app.state.container, 'close'):
         if asyncio.iscoroutinefunction(app.state.container.close):
             await app.state.container.close()
@@ -45,7 +44,6 @@ app = FastAPI(
     lifespan=lifespan
 )
 
-# Настройка Dishka ДО добавления middleware
 container = create_container()
 setup_dishka(container, app)
 app.state.container = container

backend/src/shared/di_container.py

@@ -39,13 +39,9 @@ from src.application.use_cases.rag_use_cases import RAGUseCases
 
 class DatabaseProvider(Provider):
     @provide(scope=Scope.REQUEST)
-    @asynccontextmanager
     async def get_db(self) -> AsyncSession:
-        async with AsyncSessionLocal() as session:
-            try:
-                yield session
-            finally:
-                await session.close()
+        session = AsyncSessionLocal()
+        return session
 
 
 class RepositoryProvider(Provider):