refactor(admin): split workshop, vendor-compliance, advisory-board/documentation pages

Each page.tsx was >500 LOC (610/602/596). Extracted React components to
_components/ and custom hook to _hooks/ per-route, reducing all three
page.tsx orchestrators to 107/229/120 LOC respectively. Zero behavior changes.

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

admin-compliance/app/sdk/vendor-compliance/_components/QuickActionCard.tsx

@@ -0,0 +1,48 @@
+import React from 'react'
+import Link from 'next/link'
+
+export function QuickActionCard({
+  title,
+  description,
+  href,
+  onClick,
+  icon,
+}: {
+  title: string
+  description: string
+  href?: string
+  onClick?: () => void
+  icon: React.ReactNode
+}) {
+  const inner = (
+    <>
+      <div className="flex-shrink-0 p-3 bg-blue-50 dark:bg-blue-900/20 rounded-lg text-blue-600 dark:text-blue-400">
+        {icon}
+      </div>
+      <div>
+        <h3 className="font-medium text-gray-900 dark:text-white">{title}</h3>
+        <p className="text-sm text-gray-500 dark:text-gray-400">{description}</p>
+      </div>
+    </>
+  )
+
+  if (onClick) {
+    return (
+      <button
+        onClick={onClick}
+        className="bg-white dark:bg-gray-800 rounded-lg shadow p-6 hover:shadow-md transition-shadow flex items-start gap-4 w-full text-left"
+      >
+        {inner}
+      </button>
+    )
+  }
+
+  return (
+    <Link
+      href={href!}
+      className="bg-white dark:bg-gray-800 rounded-lg shadow p-6 hover:shadow-md transition-shadow flex items-start gap-4"
+    >
+      {inner}
+    </Link>
+  )
+}