fix: invalidate cache when creating summaries

src/utils/summarizer.py

@@ -10,7 +10,9 @@ from sqlalchemy import update
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from src import prometheus, schemas
+from src.cache.client import cache as cache_client
 from src.config import settings
+from src.crud.session import session_cache_key
 from src.dependencies import tracked_db
 from src.exceptions import ResourceNotFoundException
 from src.utils.clients import HonchoLLMCallResponse, honcho_llm_call
@@ -534,6 +536,9 @@ async def _save_summary(
     await db.execute(stmt)
     await db.commit()
 
+    cache_key = session_cache_key(workspace_name, session_name)
+    await cache_client.delete(cache_key)
+
 
 async def get_summarized_history(
     db: AsyncSession,