The pending_changes.action CHECK only permitted create/update/delete, so a
suggest-tier agent hitting POST /api/refs/upsert (or the resource dependency
routes) 500'd on the INSERT (docs/security-followups.md HIGH finding).
- migration 009: widen CHECK to include 'upsert'
- applyPendingChange: dispatch 'upsert' -> refsRepo.upsertByExternal on approve
- resources.js: add_dependency/remove_dependency are now owner-only (requireOwner),
infra wiring is never diverted to pending_changes
- tests/api/pending_extended_actions.test.js: regression coverage
Full suite green (278 pass / 1 skip).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
c591b2aed1