Fine grained permissions for webRTC handshake

Hi, I am building a WebRTC P2P app for a university project and have hit a security limitation regarding permissions for anonymous users.

The Architecture: We use Appwrite Realtime for signaling. Both the host and joining clients subscribe to a Room row and its related Connection rows (one-to-many relationship). They update these rows with ICE candidates and SDP offers/answers to establish the connection.

The Problem: Since we support unregistered (anonymous) users, we currently have to enable Connection table-level permissions (create, read, update) for role:all or role:guests.

This creates a security vulnerability: any malicious user can read all connection rows in the table, potentially harvesting ICE credentials or sabotaging other sessions.

The Limitation: We attempted to restrict table-level permissions and rely on Row Security, but we hit a roadblock: Appwrite relationships seem to act only as data links, not as permission inheritance structures. We cannot say "If a user has write access to this Room row, they automatically get write access to its child Connection rows."

My Question: Is there a native way to cascade permissions from a parent Table (Room) to child Tables (Connections) without using a server-side Appwrite Function to manually manage ACLs for every insert? If not, is this feature on the roadmap for the TablesDB API?