refactor(admin): split controls + dsr/[requestId] pages

controls/page.tsx 840→211 LOC — extracted StatsCards, FilterBar,
ControlCard, AddControlForm, RAGPanel, LoadingSkeleton to _components/;
useControlsData, useRAGSuggestions to _hooks/; shared types to _types.ts.

dsr/[requestId]/page.tsx 854→172 LOC — extracted detail panels and
timeline components to _components/.

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

admin-compliance/app/sdk/controls/_components/LoadingSkeleton.tsx

@@ -0,0 +1,22 @@
+'use client'
+
+import React from 'react'
+
+export function LoadingSkeleton() {
+  return (
+    <div className="space-y-4">
+      {[1, 2, 3].map(i => (
+        <div key={i} className="bg-white rounded-xl border border-gray-200 p-6 animate-pulse">
+          <div className="flex items-center gap-2 mb-3">
+            <div className="h-5 w-20 bg-gray-200 rounded" />
+            <div className="h-5 w-16 bg-gray-200 rounded-full" />
+            <div className="h-5 w-16 bg-gray-200 rounded-full" />
+          </div>
+          <div className="h-6 w-3/4 bg-gray-200 rounded mb-2" />
+          <div className="h-4 w-full bg-gray-100 rounded" />
+          <div className="mt-4 h-2 bg-gray-200 rounded-full" />
+        </div>
+      ))}
+    </div>
+  )
+}