This commit adds a comprehensive summary of the project’s recent security hardening work, including the headers, SRI, cookie, and cache-control changes made to address OWASP ZAP findings. The document also records testing results, expected alert reduction, known acceptable risks, and concrete post-deployment verification steps so the team can validate that fixes actually reached production. It’s documentation-only, but it usefully centralizes the security context and operational checklist for future audits and follow-up work.