Fix missing query invalidations across member management

Add utils.user.list.invalidate() after mutations that change user
status to ensure member lists refresh without manual page reload:
- Member detail page: after update and send invitation
- User mobile actions: after send invitation
- Add member dialog: after send invitation in jury group flow

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/components/admin/jury/add-member-dialog.tsx

@@ -88,6 +88,7 @@ export function AddMemberDialog({ juryGroupId, open, onOpenChange }: AddMemberDi
   const { mutate: sendInvitation } = trpc.user.sendInvitation.useMutation({
     onSuccess: (result) => {
       toast.success(`Invitation sent to ${result.email}`)
+      utils.user.list.invalidate()
     },
     onError: (err) => {
       // Don't block — user was created and added, just invitation failed

src/components/admin/user-actions.tsx

@@ -250,6 +250,7 @@ export function UserMobileActions({
     try {
       await sendInvitation.mutateAsync({ userId })
       toast.success(`Invitation sent to ${userEmail}`)
+      utils.user.list.invalidate()
     } catch (error) {
       toast.error(error instanceof Error ? error.message : 'Failed to send invitation')
     } finally {