feat: Anti-Fake-Evidence System (Phase 1-4b)

Implement full evidence integrity pipeline to prevent compliance theater:
- Confidence levels (E0-E4), truth status tracking, assertion engine
- Four-Eyes approval workflow, audit trail, reject endpoint
- Evidence distribution dashboard, LLM audit routes
- Traceability matrix (backend endpoint + Compliance Hub UI tab)
- Anti-fake badges, control status machine, normative patterns
- 2 migrations, 4 test suites, MkDocs documentation

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

admin-compliance/app/api/sdk/drafting-engine/draft/route.ts

@@ -591,12 +591,43 @@ async function handleV2Draft(body: Record<string, unknown>): Promise<NextRespons
     cacheStats: proseCache.getStats(),
   }
 
+  // Anti-Fake-Evidence: Truth label for all LLM-generated content
+  const truthLabel = {
+    generation_mode: 'draft_assistance',
+    truth_status: 'generated',
+    may_be_used_as_evidence: false,
+    generated_by: 'system',
+  }
+
+  // Fire-and-forget: persist LLM audit trail to backend
+  try {
+    const BACKEND_URL = process.env.BACKEND_COMPLIANCE_URL || 'http://backend-compliance:8002'
+    fetch(`${BACKEND_URL}/api/compliance/llm-audit`, {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({
+        entity_type: 'document',
+        entity_id: null,
+        generation_mode: 'draft_assistance',
+        truth_status: 'generated',
+        may_be_used_as_evidence: false,
+        llm_model: LLM_MODEL,
+        llm_provider: 'ollama',
+        input_summary: `${documentType} draft generation`,
+        output_summary: draft?.sections?.length ? `${draft.sections.length} sections generated` : 'draft generated',
+      }),
+    }).catch(() => {/* fire-and-forget */})
+  } catch {
+    // LLM audit persistence failure should not block the response
+  }
+
   return NextResponse.json({
     draft,
     constraintCheck,
     tokensUsed: Math.round(totalTokens),
     pipelineVersion: 'v2',
     auditTrail,
+    truthLabel,
   })
 }