[WIP] feat(users): add permission-based role management UI

[Samk13]

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Description

Adds a user role editing interface in the administration panel with permission-based access control.

depends on: #3227

• Implemented user edit view for role assignment.
• Added templates for user details and edit views.
• Updated user management routes and tests.

Screen.Recording.2025-11-10.at.02.38.03.mov

Checklist

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