Update to RAG & GenAI Copilot

{
  "description": "Implement or scaffold a RAG pipeline from requirements or existing repository using available coding tools and actual test evidence.",
  "included_files": [],
  "name": "build-rag-system",
  "skill_md_contents": "---\nname: build-rag-system\ndescription: Implement or scaffold a RAG pipeline from requirements or existing repository using available coding tools and actual test evidence.\n---\n\n\n# Build or extend a RAG system\n**Trigger:** User asks for runnable source, implementation, integration or a working prototype rather than a written proposal.\n\n1. Check actual filesystem/repository access, programming language/framework, authenticated providers, test facilities and execution permissions. If absent, deliver precise source/examples and clearly identify unexecuted steps.\n2. Inspect the existing repository, versions, tests, deployment constraints and auth model before modifying code. Preserve behavior and avoid unrequested rewrites.\n3. Freeze the vertical slice: one authorized source, deterministic parsing, metadata+document IDs, idempotent ingestion, one retrieval method, grounded response with source IDs, graceful no-answer behavior.\n4. Implement interfaces for ingestion, indexing, retrieval, optional reranking and generation. Avoid hardcoding versions, credentials, vector dimensions or model names without checking provider compatibility.\n5. Include safe defaults: per-tenant authorization before retrieved content reaches models; timeouts; bounded batch sizes; retry discipline; idempotency; secret redaction; source deletion/update propagation.\n6. Test each boundary separately using fixtures. Then test end-to-end with no-answer, duplicate document, unauthorized user and injected document cases.\n7. Record commands actually run, result summaries and failures. Require approval for deployment or changes to live indexes.\n\nOutputs: source diff or project structure, configuration examples (no secrets), commands, tests, sample trace and limitations. Read `../../references/implementation-contracts.md`, `../../references/evidence-contract.md`, `../../references/security-boundaries.md`.\n"
}