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/audit/audit-log-list.tsx

@@ -19,6 +19,7 @@ import {
   SelectValue,
 } from '@/components/ui/select';
 import { apiFetch } from '@/lib/api/client';
+import { AuditLogCard } from './audit-log-card';
 
 interface AuditEntry {
   id: string;
@@ -357,6 +358,7 @@ export function AuditLogList() {
           data={entries}
           isLoading={loading}
           getRowId={(row) => row.id}
+          cardRender={(row) => <AuditLogCard entry={row.original} />}
           emptyState={
             <div className="text-center py-8">
               <p className="text-muted-foreground">No audit log entries found.</p>