MobileInstancePanel gains Registration and Federation entries (parity with
desktop's six sub-tabs). MobileShell registers the matching screenMap
wrappers; the Federation entry surfaces the live approval-count badge via
a new uiStore slot and a wrapper that forwards FederationPanel's
onApprovalCountChange.
MobileShell's deep-link reconstruction now reacts to post-mount pathname
changes (was [] / mount-only) with an idempotency guard that skips the
push when the topmost stack entry already represents the new URL —
prevents the pushMobileScreen → history.pushState → location-effect
double-push.
RegistrationPanel's four portaled modals (CreateInvite, EditInvite,
ReinstateInvite, Redemptions) now render through the shared <Modal>
with mobileStyle="fullscreen", portaled to document.body to escape the
parent settings dialog's backdrop-filter containing block. Desktop
appearance preserved (same maxWidth, same sticky action bar).
Jannis Braun