PR Template - Sprint 20 Task 05

Task

Implement time-bound privilege elevation tokens.

Summary

• Added one-time token issuance/consumption with strict TTL enforcement.

Scope

• src/pkg/security/high_assurance.py
• src/pkg/security/aaa_framework.py
• tests/unit/test_high_assurance_security.py
• tests/unit/test_aaa_framework.py

Validation

• PYTHONPATH=src .venv/bin/pytest -q tests/unit/test_high_assurance_security.py tests/unit/test_aaa_framework.py