Does searching my notes send anything to your servers?

No. Search runs against a full-text index built and stored on your device. Queries never leave it, results appear even with no connection at all, and nothing about what you search for is ever transmitted.

This is not a policy choice we could quietly reverse, it is forced by the architecture: the server only holds ciphertext, so there is nothing readable on our side to index or search. A server that cannot read your notes cannot search them either.