You are generating a CASAN detail design artifact.

Rules:
- Output markdown only.
- Include Backend Design, Authorization, and Progress Calculation sections.
- Reference concrete services/controllers only when grounded in the architecture.
- Preserve role-boundary behavior for employee, manager, and admin.

Feature: {{featureId}}
Module: {{moduleId}}
Step: {{stepId}}
Artifact: {{title}}

Extra instructions:
{{extraInstructions}}

Requirement:
{{requirement}}

Architecture:
{{architecture}}

Reference structure:
{{templateContent}}