Api podcast migration (#93)

Creates the API layer for Open Notebook
Creates a services API gateway for the Streamlit front-end
Migrates the SurrealDB SDK to the official one
Change all database calls to async
New podcast framework supporting multiple speaker configurations
Implement the surreal-commands library for async processing
Improve docker image and docker-compose configurations

api/context_service.py

@@ -0,0 +1,32 @@
+"""
+Context service layer using API.
+"""
+
+from typing import Dict, Optional
+
+from loguru import logger
+
+from api.client import api_client
+
+
+class ContextService:
+    """Service layer for context operations using API."""
+    
+    def __init__(self):
+        logger.info("Using API for context operations")
+    
+    def get_notebook_context(
+        self,
+        notebook_id: str,
+        context_config: Optional[Dict] = None
+    ) -> Dict:
+        """Get context for a notebook."""
+        result = api_client.get_notebook_context(
+            notebook_id=notebook_id,
+            context_config=context_config
+        )
+        return result
+
+
+# Global service instance
+context_service = ContextService()