Top-tabs above the custom-domains grid: Seiten (web) and Mails (mail_*).
2px underline highlight in colors.brandOrange for the active tab, the
muted label otherwise — matches the community/feed tab style we already
use. Pill segmented control would have needed extra inset math for two
tabs without adding clarity.
- DomainGrid filters items by the active tab. Tab-specific empty-state
copy and icon (mail-outline for the Mails tab) so the empty Mails tab
doesn't read like a broken Web view.
- mail_display_name tiles hide the submit-to-global button entirely —
matches the v1.0 backend lock; the user can't accidentally tap into a
400 from the API.
- useCustomDomains exposes countsByType + limits. Provisional client-
side estimation until the new API response shape (extended in the
parallel backend commit f2b81ee) is wired through — same TS shape,
so dropping the estimation is a one-line swap when ready.
- AddDomainSheet picks up initialType so tapping "+" while the Mails tab
is active opens the sheet pre-selected to E-Mail. Plan-limit error
handling maps WEB_LIMIT_REACHED / MAIL_LIMIT_REACHED to the right
per-bucket message.
i18n: tabs_web / tabs_mail / count_label / error_web_limit_reached /
error_mail_limit_reached / empty_web / empty_mail across DE/EN/FR with
%{var} placeholders.
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