Fix typos

docs/a2a.md

@@ -124,7 +124,7 @@ export A2A_MAX_CONTEXTS=1000
 
 ## Security
 
-By default, the A2A agent runs without authenticationto. For production deployments, you should add authentication.
+By default, the A2A agent runs without authentication. For production deployments, you should add authentication.
 
 ### Adding Authentication
 

src/haiku/rag/a2a/worker.py

@@ -1,3 +1,4 @@
+import json
 import logging
 import uuid
 from pathlib import Path
@@ -65,8 +66,6 @@ class ConversationalWorker(Worker[list[Message]]):
                 context = await self.storage.load_context(task["context_id"]) or []
                 message_history = load_message_history(context)
 
-                from haiku.rag.a2a.models import AgentDependencies
-
                 deps = AgentDependencies(client=client)
 
                 result = await self.agent.run(
@@ -274,8 +273,6 @@ class ConversationalWorker(Worker[list[Message]]):
                         )
 
                         if tool_name == "search_documents" and content:
-                            import json
-
                             from fasta2a.schema import DataPart
 
                             # Extract query from tool call arguments