v1.0.9 Compliance evidence package

[sudoshi]

Roadmap execution issue derived from ROADMAP.md.

Release: v1.0.9
Category: Compliance
Area: Compliance
Priority: P1
Risk: High
Work Type: Audit
Target Date: 2026-05-04

Turn security hardening work into reviewable evidence.

Scope:

• Document HIPAA technical safeguards implemented in Parthenon.
• Generate a security controls matrix mapping HIGHSEC rules to implementation evidence.
• Prepare artifacts for third-party security review.

Done Criteria

• Implementation, audit, or validation work is completed for this scope.
• Evidence is captured with code, tests, or review notes as appropriate.
• Documentation is updated when the work changes user or developer behavior.