A single platform-wide @nestjs/schedule cron (daily 07:00), registered
via SchedulerRegistry exactly like TenderSchedulerService — NOT the
DkvSchedulerService single-tenant pattern (Pitfall 1). Selects
candidate users as distinct userId with an open TenderMatch
(notifiedAt IS NULL) via findMany across all tenants, resolves each
user's TenderNotificationPref.digestInterval (missing row -> daily
default, D-01: daily always due, weekly only on Monday Europe/Berlin,
off never), groups their un-notified matches by saved-search profile
name into one TenderMailService.sendDigest call per user (D-02), and
stamps notifiedAt+channel='digest' ONLY after a successful send — the
shared notifiedAt-IS-NULL eligibility gate that guarantees no
double-send with instant alerts (D-06).
Each candidate user is processed in its own try/catch: a missing SMTP
config, a send failure, or an unexpected thrown error for one
user/tenant leaves that user's matches notifiedAt=NULL (retried next
run) and never aborts the run for the rest (Pitfall 6).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
schalli
c0a8906d6a