feat: Control-Detail Provenance + Atomare Controls Seite

Backend: provenance endpoint (obligations, doc refs, merged duplicates,
regulations summary) + atomic-stats aggregation endpoint.
Frontend: ControlDetail mit Provenance-Sektionen, klickbare Navigation,
neue /sdk/atomic-controls Seite mit Stats-Bar und gefilterer Liste.

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

admin-compliance/app/sdk/control-library/components/helpers.tsx

@@ -304,3 +304,61 @@ export function ObligationTypeBadge({ type }: { type: string | null | undefined
 export function getDomain(controlId: string): string {
   return controlId.split('-')[0] || ''
 }
+
+// =============================================================================
+// PROVENANCE TYPES
+// =============================================================================
+
+export interface ObligationInfo {
+  candidate_id: string
+  obligation_text: string
+  action: string | null
+  object: string | null
+  normative_strength: string
+  release_state: string
+}
+
+export interface DocumentReference {
+  regulation_code: string
+  article: string | null
+  paragraph: string | null
+  extraction_method: string
+  confidence: number | null
+}
+
+export interface MergedDuplicate {
+  control_id: string
+  title: string
+  source_regulation: string | null
+}
+
+export interface RegulationSummary {
+  regulation_code: string
+  articles: string[]
+  link_types: string[]
+}
+
+// =============================================================================
+// PROVENANCE BADGES
+// =============================================================================
+
+const EXTRACTION_METHOD_CONFIG: Record<string, { bg: string; label: string }> = {
+  exact_match: { bg: 'bg-green-100 text-green-700', label: 'Exakt' },
+  embedding_match: { bg: 'bg-blue-100 text-blue-700', label: 'Embedding' },
+  llm_extracted: { bg: 'bg-violet-100 text-violet-700', label: 'LLM' },
+  inferred: { bg: 'bg-gray-100 text-gray-600', label: 'Abgeleitet' },
+}
+
+export function ExtractionMethodBadge({ method }: { method: string }) {
+  const config = EXTRACTION_METHOD_CONFIG[method] || EXTRACTION_METHOD_CONFIG.inferred
+  return <span className={`inline-flex items-center px-1.5 py-0.5 rounded text-xs font-medium ${config.bg}`}>{config.label}</span>
+}
+
+export function RegulationCountBadge({ count }: { count: number }) {
+  if (count <= 0) return null
+  return (
+    <span className="inline-flex items-center px-1.5 py-0.5 rounded text-xs font-medium bg-violet-100 text-violet-700">
+      {count} {count === 1 ? 'Regulierung' : 'Regulierungen'}
+    </span>
+  )
+}