Root causes of the remaining 5 CI PG failures (and the hidden flaky set):
1. All PG-integration packages shared ONE database under parallel package
execution - migrations/seeds/truncates raced (nondeterministic failure
sets, locally and in CI).
Fix: RequireTestDatabaseURL/SkipIfNoTestDatabaseURL now derive a
per-package database (<base>_<pkgHash>, advisory-lock-guarded
CREATE); 9 raw-env straggler tests funnelled through the helpers;
db-package tests call it unqualified (no import cycle).
2. Approval-chain fixtures were not production-shaped: freezeReviewSnapshot
only honors head_snapshot_id, fake content hashes never froze a
snapshot, so ApproverApprove rejected with 'approved requires frozen
review_snapshot_id'. Errors were swallowed (_, _ =) hiding this.
Fix (ownership-respecting, arch-enforced):
- docrevision.SeedContentSnapshotForTest seeds the ledger tables it owns
- docgov GovernanceEngine.FreezeHeadSnapshotForTest freezes head/review
pointers on document_records (docgov-owned) and clears engine cache
- all four integration fixtures use the pair; swallowed errors checked
3. Fixed-name fixtures collide once a package shares one DB (projects
uq_projects_name_global): uniquified in projectinstance + server tests.
4. CAS/ctxmgr tests never bootstrapped migrations (relied on other packages
having migrated the shared DB): explicit RunMigrationsOnceForTest.
Verified: full parallel short suite = 75 packages, 0 failures against an
isolated throwaway PG. CI skip list removed - short tests fully required.
Wire intent→coordinator DocResolver confirm cards→action_executor kinds for comment, reopen, pending-supplements query, and real submit-review execution.
Add notification digests with ON CONFLICT DO UPDATE, migrations 00068-00070,
supplementimpact module (analyze → confirm → claim-aware split), and wire
coordinator/mutate hooks plus proposal_required digests.