plan-features.customDomains is now { web, mail } per plan instead of a
single number. Free 5+5, Pro 5+5, Legend 10+10 — the user explicitly
chose separate pools so users don't have to trade a website slot for a
mail-pattern slot or vice versa.
- countActiveCustomDomainsSplit(userId) groupBy type → { web, mail }
(mail aggregates mail_domain + mail_display_name). Old single-count
function stays as a deprecated alias for any caller still on it.
- POST /api/custom-domains: body-compat accepts both { pattern, kind }
(current frontend) and { domain, type } (legacy / direct). kind='mail'
is split into mail_domain vs mail_display_name server-side based on
whether the pattern looks like a domain. Slot check is per-bucket;
errors are WEB_LIMIT_REACHED / MAIL_LIMIT_REACHED so the UI can show
the right limit-reached message per tab.
- GET /api/custom-domains: response shape extended to
{ items, counts: { web, mail }, limits: { web, mail } } so the
frontend can drive the per-tab counter without client-side estimation.
- POST /api/custom-domains/:id/submit: hard-blocks mail_display_name
with 400 DISPLAY_NAME_NOT_SUBMITTABLE. Display-name submission to the
global blocklist is deferred to v1.1 — would require a schema split
on BlocklistDomain that's risky pre-TestFlight. mail_domain still
flows through the community-vote pipeline like web entries.
- auth/me.get.ts, plan/change-preview.get.ts, coach/message.post.ts
updated for the new shape (Lyra prompts untouched, only template
variables split web vs mail counts).
24 vitest cases in backend/tests/custom-domains/plan-limits.test.ts
cover the new shape, body compat, bucket logic, and the submit guard;
216/216 total backend tests pass.
