# Fix Compilation Error: Unused Import

The error `handlers_rbac.go:8:2: "github.com/niangaodev/art-code/models" imported and not used` indicates that the `models` package is imported in `handlers_rbac.go` but no functions or types from it are directly used in that file.

## Analysis
- In `handlers_rbac.go`, I defined a local struct `UpdateRolePermissionsRequest` instead of using a model from the `models` package.
- The functions call `repositories.GetPermissions` and `repositories.GetRoleByID`, which return model types, but these are handled via the `repositories` package or local variables, so the `models` package qualifier itself isn't explicitly used in the code logic.

## Solution Plan
1.  **Modify `server/handlers_rbac.go`**:
    - Remove the unused import `"github.com/niangaodev/art-code/models"`.

This will resolve the compilation error.