Update to Aivana Database Engineer

{
  "description": "Create prove-before-apply gates for migrations, indexes, rewrites, SLOs, replay, and rollback evidence.",
  "included_files": [],
  "name": "autonomous-verification-loop",
  "skill_md_contents": "---\nname: autonomous-verification-loop\ndescription: Create prove-before-apply gates for migrations, indexes, rewrites, SLOs, replay, and rollback evidence.\n---\n\n# Autonomous Verification Loop\n\nUse this skill before applying write-like database changes.\n\nRun:\n\n```bash\nnode runtime/runTool.js autonomous_verification_loop '{\"tool\":\"create_index\",\"engine\":\"postgres\",\"database\":\"analytics\",\"schema\":\"public\",\"table\":\"events\",\"proposedSql\":\"CREATE INDEX ix_events_email ON events(user_email)\"}'\n```\n\nThe tool returns gates for policy, explain, replay, SLO, and rollback evidence,\nplus a release decision.\n"
}