mcp 2.x is already on origin/main. This ports the rest of
docs-mcp-template #12–#16 without replacing HVM's BM25-first
search_docs path.
- Numbered [1] citations via docs_mcp/format.py
- Eval P@1 + JSONL sidecar + eval.pvalue
- Heading-recursive chunker, keep chunk-0 and MAX_CHARS=4000
- Nomic prefixes at embed time only; stored text unprefixed
Closes#15
