add :: prefix for info events in chat log

- FormatEvent now prefixes info role with ':: '
- Session rename uses :: prefix
- Update test expectation

pkg/store/session.go

@@ -417,7 +417,7 @@ func (s *SessionStore) renameSession(oldID, newID string) error {
 		s.cfg.OnRename(oldID, newID)
 	}
 
-	sess.AppendLog([]byte(fmt.Sprintf("(session renamed: %s -> %s)\n", oldID, newID)))
+	sess.AppendLog([]byte(fmt.Sprintf(":: session renamed: %s -> %s\n", oldID, newID)))
 	s.cfg.Log.Info("renamed session %s -> %s", oldID, newID)
 	return nil
 }
@@ -456,7 +456,7 @@ func FormatEvent(ev agent.Event) []byte {
 	case "stalled":
 		return []byte("agent stalled\n")
 	case "info":
-		return []byte(ev.Content)
+		return []byte(":: " + ev.Content)
 	default:
 		return nil
 	}

pkg/store/store_test.go

@@ -1221,7 +1221,7 @@ func TestFormatEvent(t *testing.T) {
 		{agent.Event{Role: "tool", Content: "result\n"}, "result\n"},
 		{agent.Event{Role: "retry", Content: "5"}, "retrying in 5s...\n"},
 		{agent.Event{Role: "stalled"}, "agent stalled\n"},
-		{agent.Event{Role: "info", Content: "note"}, "note"},
+		{agent.Event{Role: "info", Content: "note"}, ":: note"},
 		{agent.Event{Role: "unknown"}, ""},
 	} {
 		got := string(store.FormatEvent(tc.ev))