refactor(admin): split industry-templates page.tsx into colocated components

Split 879-LOC page.tsx into 187 LOC with 11 colocated components,
_types.ts and _constants.ts for the industry templates module.
Behavior preserved.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

admin-compliance/app/sdk/industry-templates/_components/EmptyState.tsx

@@ -0,0 +1,20 @@
+export function EmptyState({ onReload }: { onReload: () => void }) {
+  return (
+    <div className="bg-white rounded-xl border border-slate-200 p-12 text-center">
+      <div className="w-16 h-16 rounded-2xl bg-emerald-50 flex items-center justify-center text-3xl mx-auto mb-4">
+        {'\uD83C\uDFED'}
+      </div>
+      <h3 className="text-lg font-semibold text-slate-900">Keine Branchenvorlagen verfuegbar</h3>
+      <p className="text-slate-500 mt-2 max-w-md mx-auto">
+        Es sind derzeit keine branchenspezifischen Compliance-Pakete im System hinterlegt.
+        Bitte kontaktieren Sie den Administrator oder versuchen Sie es spaeter erneut.
+      </p>
+      <button
+        onClick={onReload}
+        className="mt-4 px-4 py-2 text-sm font-medium text-emerald-700 bg-emerald-50 hover:bg-emerald-100 rounded-lg transition-colors"
+      >
+        Erneut laden
+      </button>
+    </div>
+  )
+}