Update to Aivana Database Engineer

{
  "name": "evidence-pack-generator",
  "description": "Build a DBA-ready performance case file with SQL, plan, waits, recommendation, rollback, and evidence grade.",
  "included_files": [],
  "skill_md_contents": "---\nname: evidence-pack-generator\ndescription: Build a DBA-ready performance case file with SQL, plan, waits, recommendation, rollback, and evidence grade.\n---\n\n# Evidence Pack Generator\n\nRun:\n\n```bash\nnode runtime/runTool.js evidence_pack_generator '{\"question\":\"Why is checkout slow?\",\"sql\":\"SELECT * FROM orders\",\"recommendation\":\"add covering index\"}'\n```\n\nReturns executive summary, case file sections, evidence grade, and missing evidence.\n"
}