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/loop/gather.go

@@ -242,4 +242,4 @@ func collapseReminders(due []store.Reminder) []store.Reminder {
 		Status:    "pending",
 		Collapsed: due,
 	}}
-}
+}