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agentsop-idempotent-ingestion

Re-ingest-correctness SOP for production RAG. Activate when a calling agent builds, reviews, or debugs an ingestion pipeline that runs more than once over a changing corpus — scheduled re-index, incremental updates, CI re-ingest, or a "retrieval has duplicates / shows deleted docs" bug. Encodes the rule — **ingestion must be idempotent: a document's content hash decides insert/update/skip, so re-running over unchanged docs is a no-op** — plus the docstore + doc-hash upsert machinery (LlamaIndex `IngestionPipeline` + `DocstoreStrategy`), the delete-propagation problem, and cross-framework equivalents (LangChain `index()` + `RecordManager`, manual hash table). ENHANCE overlay over [[llamaindex]]: the IngestionPipeline exists in the base skill but the re-ingest-correctness contract is not surfaced.

skills/agentsop-idempotent-ingestion/SKILL.md

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# Idempotent Ingestion · Re-Ingest-Correctness SOP

> Third-person operating model for a coder agent that owns ingestion
> correctness across repeated runs. The audience is the LLM agent writing or
> reviewing the pipeline code — not the end user.

> **One sentence**: *The interesting run is the second one. A correct pipeline
> hashes each document, looks the hash up in a docstore, and inserts / updates
> / skips accordingly — so re-running over unchanged docs changes nothing.*

This skill is an **ENHANCE overlay** over [[llamaindex]]. The base skill names
`IngestionPipeline` with `docstore` + `UPSERTS_AND_DELETE` as a hardening
must-have (OP-08, anti-pattern A10) but stops at "use it". This overlay
surfaces the *correctness contract* — what idempotency actually means, how the