docs(security): comprehensive security audit and remediation documentation
- Add SECURITY.md policy with credential management, Docker security, SSL/TLS guidance
- Add security audit report (2025-12-20) with 31 findings across 4 severity levels
- Add pre-deployment security checklist template
- Update CLAUDE_STATUS.md with security audit initiative
- Expand services/README.md with comprehensive security sections
- Add script validation report and container name fix guide
Audit identified 6 CRITICAL, 3 HIGH, 2 MEDIUM findings
4-phase remediation roadmap created (estimated 6-13 min downtime)
All security scripts validated and ready for execution
Related: Security Audit Q4 2025, CRITICAL-001 through CRITICAL-006
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>