PR Template - Sprint 19 Task 08

Task

Add tamper-evident audit log channel.

Summary

• Added hash-chained integrity event channel under spectrastrike.audit.integrity.

Scope

• src/pkg/logging/framework.py
• tests/unit/test_logging_framework.py

Validation

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