Add a document. Nothing else moves.
A document is read into TOMX's knowledge through a gate that decides, per fact, whether to write it, skip it as already known, or flag it as contradicting what is already held. No retraining: the knowledge lives on disk, so adding to it is a write.
Every entity this deployment serves already holds its document, so there is no blank entity to teach. What you can do is withhold one entity's document for your session, watch its answers degrade, then paste the document back and watch them return. That is a real write through the real gate, and it is how the research run itself was measured. It is not a document about something the corpus has never seen, and this panel does not claim that.
Grow once. Rerun the identical old world.
First hash and run the server-owned probe500 manifest. Then add one safe, previously absent fact, answer its new query, and rerun that exact manifest. The checkpoint identity is read before and after; no-retraining passes only when it stays identical while overlay rows grow.
Clear this session overlay; run and hash the fixed probe.
Write the fixed safe document and answer the new fact.
Rerun the same probe and show every old-world delta.
Pick an entity to withhold and regrow.