-Introduce granular permissions for documents, chats, podcasts, and logs.
- Update routes to enforce permission checks for creating, reading, updating, and deleting resources. - Refactor user and search space interactions to align with RBAC model, removing ownership checks in favor of permission validation.
- Modified various FastAPI route definitions to remove trailing slashes for consistency across the application.
- Updated corresponding fetch calls in the frontend to align with the new endpoint structure.
- Ensured that all affected routes maintain their functionality without trailing slashes.
