diff --git a/haiku_rag_slim/haiku/rag/agents/chat/agent.py b/haiku_rag_slim/haiku/rag/agents/chat/agent.py
index 852afd11..af67a6d7 100644
--- a/haiku_rag_slim/haiku/rag/agents/chat/agent.py
+++ b/haiku_rag_slim/haiku/rag/agents/chat/agent.py
@@ -12,11 +12,7 @@ from haiku.rag.config.models import AppConfig
 from haiku.rag.tools.context import ToolContext, prepare_context
 from haiku.rag.tools.deps import AgentDeps
 from haiku.rag.tools.document import create_document_toolset
-from haiku.rag.tools.qa import (
-    QA_SESSION_NAMESPACE,
-    QASessionState,
-    create_qa_toolset,
-)
+from haiku.rag.tools.qa import QA_SESSION_NAMESPACE, QASessionState, create_qa_toolset
 from haiku.rag.tools.search import create_search_toolset
 from haiku.rag.tools.session import SessionContext
 from haiku.rag.utils import get_model
@@ -167,9 +163,7 @@ async def run_chat_agent(
     deps: ChatDeps,
     message: str,
 ) -> str:
-    """Run the chat agent and trigger background summarization.
-
-    This wrapper handles post-processing like background summarization.
+    """Run the chat agent.
 
     Args:
         agent: The chat agent.
@@ -180,7 +174,6 @@ async def run_chat_agent(
         Agent response.
     """
     result = await agent.run(message, deps=deps)
-    trigger_background_summarization(deps)
     return result.output
 
 
diff --git a/haiku_rag_slim/haiku/rag/tools/__init__.py b/haiku_rag_slim/haiku/rag/tools/__init__.py
index 0964ece3..d81ef78a 100644
--- a/haiku_rag_slim/haiku/rag/tools/__init__.py
+++ b/haiku_rag_slim/haiku/rag/tools/__init__.py
@@ -6,12 +6,7 @@ from haiku.rag.tools.context import (
     prepare_context,
 )
 from haiku.rag.tools.deps import AgentDeps
-from haiku.rag.tools.document import (
-    DocumentInfo,
-    DocumentListResponse,
-    create_document_toolset,
-    find_document,
-)
+from haiku.rag.tools.document import create_document_toolset
 from haiku.rag.tools.filters import (
     build_document_filter,
     build_multi_document_filter,
@@ -20,51 +15,24 @@ from haiku.rag.tools.filters import (
 )
 from haiku.rag.tools.models import AnalysisResult, QAResult
 from haiku.rag.tools.prompts import build_tools_prompt
-from haiku.rag.tools.qa import (
-    QA_SESSION_NAMESPACE,
-    QAHistoryEntry,
-    QASessionState,
-    create_qa_toolset,
-    run_qa_core,
-)
-from haiku.rag.tools.search import SEARCH_NAMESPACE, SearchState, create_search_toolset
-from haiku.rag.tools.session import (
-    SESSION_NAMESPACE,
-    SessionContext,
-    SessionState,
-    compute_combined_state_delta,
-    compute_state_delta,
-)
+from haiku.rag.tools.qa import create_qa_toolset
+from haiku.rag.tools.search import create_search_toolset
 
 __all__ = [
     "AgentDeps",
-    "build_tools_prompt",
+    "AnalysisResult",
+    "QAResult",
     "RAGDeps",
     "ToolContext",
     "ToolContextCache",
-    "prepare_context",
-    "QAResult",
-    "AnalysisResult",
     "build_document_filter",
     "build_multi_document_filter",
+    "build_tools_prompt",
     "combine_filters",
-    "get_session_filter",
-    "SEARCH_NAMESPACE",
-    "SearchState",
-    "create_search_toolset",
-    "DocumentInfo",
-    "DocumentListResponse",
-    "create_document_toolset",
-    "find_document",
-    "QA_SESSION_NAMESPACE",
-    "QASessionState",
-    "QAHistoryEntry",
-    "create_qa_toolset",
-    "run_qa_core",
     "create_analysis_toolset",
-    "SESSION_NAMESPACE",
-    "SessionContext",
-    "SessionState",
-    "compute_state_delta",
-    "compute_combined_state_delta",
+    "create_document_toolset",
+    "create_qa_toolset",
+    "create_search_toolset",
+    "get_session_filter",
+    "prepare_context",
 ]