if you mean why I didn't choose a lib like automerge, yjs and instead handrolled it - that's because these libs are geared towards plaintext.

Bramble's sync is built around its own encrypted vault instead. When two devices conflict it just compares timestamps on the encrypted entries and keeps the newer one as-is, without ever unwrapping your per-entry keys to merge. Nothing off the shelf did that against my vault format, so the core is custom. It's a pretty simple implementation tbh