Security & Loose Ends Audit

Summary

Prompt for auditing recent code changes for security vulnerabilities and loose ends. Covers 8 security dimensions (input validation, authN/authZ, injection, secrets, data exposure, crypto, sessions/CSRF, dependencies) and 6 loose-ends dimensions (dead code, TODOs, error handling, consistency, tests, docs/config drift). Instructs in-place fixes with severity ratings, and keeps pre-existing issues in a separate list to prevent scope creep.