refactor: code cleanup

providers/__init__.py

@@ -1,11 +1,12 @@
 """Model provider abstractions for supporting multiple AI providers."""
 
-from .base import ModelCapabilities, ModelProvider, ModelResponse
+from .base import ModelProvider
 from .gemini import GeminiModelProvider
 from .openai_compatible import OpenAICompatibleProvider
 from .openai_provider import OpenAIModelProvider
 from .openrouter import OpenRouterProvider
 from .registry import ModelProviderRegistry
+from .shared import ModelCapabilities, ModelResponse
 
 __all__ = [
     "ModelProvider",