Reapply "Add missing admin action files and navigation links"

This reverts commit 4d515bc400.

src/app/admin/tickets/templates/page.tsx

@@ -0,0 +1,25 @@
+import { redirect } from 'next/navigation'
+import { canAccess, getAdminContext, PERMS } from '@/lib/permissions'
+import { prisma } from '@/lib/prisma'
+import { TicketTemplatesManager } from './templates-manager'
+
+export default async function TicketTemplatesPage() {
+  const { session, permissions } = await getAdminContext()
+  if (!canAccess(permissions, PERMS.TICKETS_EDIT, session.user.rank)) {
+    redirect('/admin/tickets')
+  }
+
+  const templates = await prisma.websiteTicketTemplate.findMany({
+    orderBy: { sortOrder: 'asc' },
+  })
+
+  return (
+    <div className="space-y-6">
+      <div>
+        <h1 className="text-3xl font-bold tracking-tight">Reply Templates</h1>
+        <p className="text-muted-foreground">Pre-defined responses for common ticket situations</p>
+      </div>
+      <TicketTemplatesManager templates={templates} />
+    </div>
+  )
+}