Interface UseUserFilesBroadcastOptions

Local user's id. Used by the relay subprotocol to filter out the caller's own publishes (the relay echoes by default).

Called when a remote participant publishes a change. The payload tells you which kind of change occurred so you can optimize the response (e.g., for removed, drop the file from local state without a server fetch). meta.senderId is the relay-authenticated publisher — use it to gate trust when the payload claims to modify a file (the canonical check is "sender must own the file").