PN placement: 1 row, ER. ER proteostasis|Protein transport|ER-Golgi trafficking|Retrograde transport|COPI coating and uncoating. PN-node mapping: subtype=mapped→GO:0030126 COPI vesicle coat (more_specific); type (Retrograde transport)=mapped→GO:0006890 retrograde Golgi-to-ER transport (more_specific); group (ER-Golgi trafficking)=no_mapping; class (Protein transport)=mapped→GO:0015031 (entailed_by_goa_closure); branch=no_mapping.
Consistency: Fully consistent across DR, notes, review YAML, and PN. The notes explicitly walk all three projected terms. No contradiction.
PN story / NEW pressure: PN asserts retrograde Golgi-to-ER transport + COPI coat handling. Review ADDS GO:0006890 (verified real; action: NEW, TAS, Reactome:R-HSA-6811434) — defensible, matches PN type-node projection. GO:0015031 already captured (entailed via GO:0006886 IBA). GO:0030126 COPI vesicle coat: PN subtype over-reaches — ARF1 is a regulatory GTPase that recruits/releases coat, not a coatomer subunit; review correctly REJECTS adding it (mirrors the TOMM20/RAB7A "wrong-bucket" precedent — a CC membership term projected onto a regulator).
Mapping strategy:ARF1 does not change the node mapping. The retrograde-transport (GO:0006890) and protein-transport (GO:0015031) projections are right. The COPI-coat subtype (GO:0030126) is sound for coatomer members but should not project to ARF1; review files this as a suggested question (distinguish structural coatomer from regulatory GTPases).
Evidence alignment: PN row carried no PMIDs; review/notes anchor on PMID:8253837 (ARF GTP cycle), PMID:10102276 (ARF1-ARFGAP-coatomer), Reactome:R-HSA-6811434. Falcon DR added PMID:37914730 (cGAS-STING), 37400497 (FA/mito), 36269825 (AP-1:Arf1 coat) as statement-only, non-core. No divergence.
Verdict: Consistent; GO:0006890 NEW is warranted and matches PN. PN GO:0030126 over-reaches for ARF1 (regulator vs coat subunit) and review correctly declines.
Recommended edits: none to ARF1-ai-review.yaml. [MAP] flag PN "COPI coating and uncoating" subtype to not project GO:0030126 (CC membership) to regulatory GTPases such as ARF1; restrict to coatomer subunits.