Implements permission intersection (AND logic) to prevent permission escalation when agents act on behalf of users. ### Changes: - **Permission Intersection**: Operations requiring both user AND agent permissions - **RoleContext Type**: Unified type supporting single `roleId` or multiple `roleIds` for intersection - **CRUD Services**: Updated to accept `roleContext` for granular permission control - **Agent Integration**: Chat agents now use user + agent role intersection for all operations - **ORM Layer**: Enhanced `getRepository` to support multi-role permission checks ### Related: - Part 2 of ["Acting on behalf of user" concept PR](https://github.com/twentyhq/twenty/pull/15103) [Closes #1661](https://github.com/twentyhq/core-team-issues/issues/1661) --------- Co-authored-by: Félix Malfait <felix.malfait@gmail.com>