Fix worker runtime retention compatibility

Author: aosingh

src/select_ai/agent/a2a/session_process.py

@@ -349,7 +349,7 @@ async def _run_session_process(
     session_id: str,
     owner: str,
     team_name: str,
-    conversation_retention_days: int,
+    conversation_retention_days: int = 7,
 ) -> None:
     """Open one async connection and execute A2A operations."""
     import select_ai

tests/a2a/test_worker_runtime.py

@@ -347,6 +347,9 @@ async def fetch(team_name):
             initialized.append("team")
 
     class Store:
+        def __init__(self, retention_days=7):
+            self.retention_days = retention_days
+
         async def initialize(self):
             initialized.append(self)
 
@@ -393,6 +396,9 @@ async def fetch(team_name):
             raise RuntimeError("team does not exist")
 
     class Store:
+        def __init__(self, retention_days=7):
+            self.retention_days = retention_days
+
         async def initialize(self):
             initialized.append(self)