refactor(admin): split controls, training, control-provenance, iace/verification pages

Each page.tsx exceeded the 500-LOC hard cap. Extracted components and hooks into
colocated _components/ and _hooks/ directories; page.tsx is now a thin orchestrator.

- controls/page.tsx: 944 → 180 LOC; extracted ControlCard, AddControlForm,
  LoadingSkeleton, TransitionErrorBanner, StatsCards, FilterBar, RAGPanel into
  _components/ and useControlsData, useRAGSuggestions into _hooks/; types into _types.ts
- training/page.tsx: 780 → 288 LOC; extracted ContentTab (inline content generator tab)
  into _components/ContentTab.tsx
- control-provenance/page.tsx: 739 → 122 LOC; extracted MarkdownRenderer, UsageBadge,
  PermBadge, LicenseMatrix, SourceRegistry into _components/; PROVENANCE_SECTIONS
  static data into _data/provenance-sections.ts
- iace/[projectId]/verification/page.tsx: 673 → 196 LOC; extracted StatusBadge,
  VerificationForm, CompleteModal, SuggestEvidenceModal, VerificationTable into _components/

Zero behavior changes; logic relocated verbatim.

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

admin-compliance/app/sdk/control-provenance/_components/SourceRegistry.tsx

@@ -0,0 +1,57 @@
+import { ExternalLink } from 'lucide-react'
+import { PermBadge } from './UsageBadge'
+
+interface SourceInfo {
+  source_id: string
+  title: string
+  publisher: string
+  url: string | null
+  version_label: string | null
+  language: string
+  license_id: string
+  license_name: string
+  commercial_use: string
+  allowed_analysis: boolean
+  allowed_store_excerpt: boolean
+  allowed_ship_embeddings: boolean
+  allowed_ship_in_product: boolean
+  vault_retention_days: number
+  vault_access_tier: string
+}
+
+export function SourceRegistry({ sources, loading }: { sources: SourceInfo[]; loading: boolean }) {
+  return (
+    <div>
+      <h2 className="text-xl font-bold text-gray-900 mb-4">Quellenregister</h2>
+      <p className="text-sm text-gray-600 mb-4">Alle registrierten Quellen mit ihren Berechtigungen.</p>
+      {loading ? (
+        <div className="animate-pulse h-32 bg-gray-100 rounded" />
+      ) : (
+        <div className="space-y-3">
+          {sources.map(src => (
+            <div key={src.source_id} className="bg-white border border-gray-200 rounded-lg p-4">
+              <div className="flex items-start justify-between mb-2">
+                <div>
+                  <h3 className="text-sm font-medium text-gray-900">{src.title}</h3>
+                  <p className="text-xs text-gray-500">{src.publisher} — {src.license_name}</p>
+                </div>
+                {src.url && (
+                  <a href={src.url} target="_blank" rel="noopener noreferrer" className="flex items-center gap-1 text-xs text-blue-600 hover:text-blue-800">
+                    <ExternalLink className="w-3 h-3" />
+                    Quelle
+                  </a>
+                )}
+              </div>
+              <div className="flex items-center gap-3 mt-2">
+                <PermBadge label="Analyse" allowed={src.allowed_analysis} />
+                <PermBadge label="Excerpt" allowed={src.allowed_store_excerpt} />
+                <PermBadge label="Embeddings" allowed={src.allowed_ship_embeddings} />
+                <PermBadge label="Produkt" allowed={src.allowed_ship_in_product} />
+              </div>
+            </div>
+          ))}
+        </div>
+      )}
+    </div>
+  )
+}