Variable: dayOfMonthSchema

const dayOfMonthSchema: ZodUnion<readonly [ZodNumber, ZodLiteral<"last">]>;

Defined in: shared/insights/schedule.ts:134

Day of the month a monthly schedule fires. A NUMBER is capped at 28 — not 31 — on purpose: a cron 0 9 31 * * silently never fires in February (and skips the 30-day months), so allowing 29–31 would let the dialog build a schedule that looks monthly but drops deliveries. Callers wanting the month's end pass the literal "last", which the cron translation renders as the L token (understood by BullMQ's cron-parser) so it fires on the true last day every month.