2026-07-14 (review): REJECTED per-commit review as the unit. No serious tool does it

2026-07-14 (review): REJECTED per-commit review as the unit. No serious tool does it (all per-PR); findings on WIP commits are false positives by construction; cost is $75-500 per PR-equivalent at published frontier rates. Unit of review is the BRANCH DIFF. Also rejected: spec-conformance as a BLOCKING gate — best agent scores 44.4% on the easier adjacent task (SpecBench) and no precision/recall for implementation-vs-spec is published anywhere. It ships advisory only, per verifier-selects-gates-decide. Full evidence: .abcd/development/research/notes/2026-07-14-cross-model-review.md