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/PageHeader.tsx

@@ -0,0 +1,17 @@
+export function PageHeader() {
+  return (
+    <div className="bg-white rounded-xl shadow-sm border border-slate-200 p-6">
+      <div className="flex items-center gap-3">
+        <div className="w-10 h-10 rounded-lg bg-gradient-to-br from-emerald-500 to-teal-600 flex items-center justify-center text-white text-lg">
+          {'\uD83C\uDFED'}
+        </div>
+        <div>
+          <h1 className="text-2xl font-bold text-slate-900">Branchenspezifische Module</h1>
+          <p className="text-slate-500 mt-0.5">
+            Vorkonfigurierte Compliance-Pakete nach Branche
+          </p>
+        </div>
+      </div>
+    </div>
+  )
+}