Phase 6 — bounds three remaining unbounded Promise.all fan-outs that the
audit flagged as potential prod-incident vectors. Same pattern proven by
email-compose (4 concurrent S3 reads) and document-signing-emails (3
concurrent SMTP sends) in earlier commits.
berth-pdf.service.ts:574 — presignDownload S3 round-trips
bound: pLimit(8). A 20-version berth used to issue 20 simultaneous
presigns. ~1× round-trip latency preserved on typical 5-15-version
berths; pathological 100-version case no longer saturates the keep-alive
pool.
custom-fields.service.ts:327 — pg upserts on bulk field-value writes
bound: pLimit(8). Port admin stacking 50+ field definitions on one
client would have burst 50 concurrent upserts at the pg pool.
notifications.service.ts:344 — createNotification fan-out across watchers
bound: pLimit(8). Hot pipeline items can accumulate many watchers; a
document event used to fan out N notification inserts + N socket emits
in one burst.
Audit also flagged brochures.service.ts and backup.service.ts as
candidates — verified neither actually has an unbounded fan-out, just
sequential queries. No change needed; speculative entries removed from
BACKLOG implicitly.
1298/1298 vitest green.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Matt
9fac84658a