PR Template - Sprint 18 Task 07

Task

Map threats to existing mitigations.

Summary

• Added threat-to-mitigation mapping table with direct code and policy references.

Scope

• docs/THREAT_MODEL.md

Validation

• PYTHONPATH=src .venv/bin/pytest -q tests/qa/test_sprint18_threat_model_qa.py

Checklist

• Mapping table added
• References validated
• Merged into dev