feat(mobile): mobile cards for reminders, audit log, users

Three new <EntityCard> files using the shared <ListCard> shell, wired
into each list page's <DataTable> via cardRender.

  - ReminderCard:   Bell icon, related-entity subtitle (User/Anchor/
                    FileText icon by entity type), due-date meta with
                    past-due flag, accent bar (rose=past-due,
                    amber=pending, slate=snoozed, emerald=done).
                    Snooze/Complete/Edit/Delete in actions menu.
  - AuditLogCard:   Action icon (Plus/Pencil/Trash2/Eye), entity
                    title, "{verb} by {actor}" subtitle, timestamp
                    meta, optional changed-field chip line. Accent
                    bar by action (created=emerald, updated=blue,
                    deleted=rose). Immutable, no actions menu.
  - UserCard:       Initials avatar, displayName/email, role meta
                    (Shield icon), last-login distance, "Inactive"
                    pill when deactivated. Accent bar (violet=
                    super_admin, slate=inactive, none=active).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/components/admin/users/user-list.tsx

@@ -10,6 +10,7 @@ import { ConfirmationDialog } from '@/components/shared/confirmation-dialog';
 import { Button } from '@/components/ui/button';
 import { Badge } from '@/components/ui/badge';
 import { apiFetch } from '@/lib/api/client';
+import { UserCard } from './user-card';
 import { UserForm } from './user-form';
 
 interface UserRow {
@@ -152,6 +153,14 @@ export function UserList() {
         data={users}
         isLoading={loading}
         getRowId={(row) => row.userId}
+        cardRender={(row) => (
+          <UserCard
+            user={row.original}
+            onEdit={handleEditUser}
+            onRemove={handleRemoveUser}
+            isRemoving={deletingId === row.original.userId}
+          />
+        )}
         emptyState={
           <div className="text-center py-8">
             <p className="text-muted-foreground">No users assigned to this port.</p>