client regression due to changes in `querymt` agent server `qmtcode`

after switch into a delegate
<img width="819" height="753" alt="Image" src="https://github.com/user-attachments/assets/60e6beb9-e647-44f6-bd5d-0a2a659f9437" />
switch into a delegate again
<img width="819" height="753" alt="Image" src="https://github.com/user-attachments/assets/1e45b9f2-5173-4b7a-8ced-fcb85f2d4d53" />

regression from querymt side somewhere between `6b2bbba` and `5f6d34d`