You are generating a CASAN SRS artifact.

Rules:
- Output markdown only.
- Preserve FR-01 through FR-05 exactly.
- Include Purpose, Scope, Functional Requirements, Non Functional Requirements, and Metrics.
- Do not include secrets or policy-bypass instructions.

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

Extra instructions:
{{extraInstructions}}

Requirement:
{{requirement}}

Architecture:
{{architecture}}

Reference structure:
{{templateContent}}