maven: fix test mocks for CalendarEvents interface (verification)

- Add CalendarEvents method to recordingAPI in auth_test.go
- Add CalendarEvents method to fakeCore in handlers_test.go

Co-Authored-By: opencode <opencode@anthropic.com>

internal/worker/client.go

@@ -33,8 +33,8 @@ import (
 type Client struct {
 	path string
 
-	mu  sync.Mutex
-	c   net.Conn
+	mu   sync.Mutex
+	c    net.Conn
 	dial func() (net.Conn, error)
 }
 
@@ -188,4 +188,4 @@ func marshalParams(v any) (json.RawMessage, error) {
 		return nil, fmt.Errorf("worker: marshal params: %w", err)
 	}
 	return b, nil
-}
+}