Fix opik import issues and pin version

src/second_brain_online/application/__init__.py

@@ -1,4 +1,15 @@
-from . import agents, rag
-from .evaluation import evaluate
-
-__all__ = ["rag", "agents", "evaluate"]
+loguru>=0.7.3
+pydantic>=2.8.2
+pydantic-settings>=2.7.0
+pymongo>=4.10.1
+boto3>=1.36.0
+langchain>=0.3.14
+langchain-mongodb>=0.4.0
+langchain-openai>=0.3.1
+langchain-core>=0.3.30
+gradio>=5.12.0
+smolagents>=1.4.1
+opik>=1.4.2
+comet_ml>=3.47.6
+langchain-huggingface>=0.1.2
+huggingface-hub>=0.27.1