Rolls up pfs.anchors.anchor_metadata (already stamped on pgvector
chunks by stack llm index/restamp, plus FR paragraph anchors for
rules) to the bib item level: code:<HCPCS> and family:<KEY> tags,
additive and idempotent via Store.add_tag. Items with more than
--max-codes-per-item (200) distinct codes get family: tags only,
plus code: for hand-family codes (ACP/CCM/PCM/TCM/APCM) — an RVU
file or CPT edition naming thousands of codes doesn't need a tag
cloud that size.
Live run over the whole store: 67,198 items tagged, 486,519 tags
added (22,111 code: tags, 786 family: tags), 141 wide items capped.
The nightly zotero-sync.yml needs no change — tags ride along on
items already in its --tag scopes.
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