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/validate/route.ts

@@ -14,6 +14,76 @@ import { buildCrossCheckPrompt } from '@/lib/sdk/drafting-engine/prompts/validat
 const OLLAMA_URL = process.env.OLLAMA_URL || 'http://host.docker.internal:11434'
 const LLM_MODEL = process.env.COMPLIANCE_LLM_MODEL || 'qwen2.5vl:32b'
 
+/**
+ * Anti-Fake-Evidence: Verbotene Formulierungen
+ *
+ * Flags formulations that falsely claim compliance without evidence.
+ * Only allowed when: control_status=pass AND confidence >= E2 AND
+ * truth_status in (validated_internal, accepted_by_auditor).
+ */
+interface EvidenceContext {
+  controlStatus?: string
+  confidenceLevel?: string
+  truthStatus?: string
+}
+
+const FORBIDDEN_PATTERNS: Array<{
+  pattern: RegExp
+  label: string
+  safeAlternative: string
+}> = [
+  { pattern: /ist\s+compliant/gi, label: 'ist compliant', safeAlternative: 'soll compliant sein' },
+  { pattern: /erfüllt\s+vollständig/gi, label: 'erfüllt vollständig', safeAlternative: 'soll vollständig erfüllt werden' },
+  { pattern: /wurde\s+geprüft/gi, label: 'wurde geprüft', safeAlternative: 'soll geprüft werden' },
+  { pattern: /wurde\s+umgesetzt/gi, label: 'wurde umgesetzt', safeAlternative: 'ist zur Umsetzung vorgesehen' },
+  { pattern: /ist\s+auditiert/gi, label: 'ist auditiert', safeAlternative: 'soll auditiert werden' },
+  { pattern: /vollständig\s+implementiert/gi, label: 'vollständig implementiert', safeAlternative: 'Implementierung ist vorgesehen' },
+  { pattern: /nachweislich\s+konform/gi, label: 'nachweislich konform', safeAlternative: 'Konformität ist nachzuweisen' },
+]
+
+const CONFIDENCE_ORDER: Record<string, number> = { E0: 0, E1: 1, E2: 2, E3: 3, E4: 4 }
+const VALID_TRUTH_STATUSES = new Set(['validated_internal', 'accepted_by_auditor'])
+
+function checkForbiddenFormulations(
+  content: string,
+  evidenceContext?: EvidenceContext,
+): ValidationFinding[] {
+  const findings: ValidationFinding[] = []
+
+  if (!content) return findings
+
+  // If evidence context shows sufficient proof, allow the formulations
+  if (evidenceContext) {
+    const { controlStatus, confidenceLevel, truthStatus } = evidenceContext
+    const confLevel = CONFIDENCE_ORDER[confidenceLevel ?? 'E0'] ?? 0
+    if (
+      controlStatus === 'pass' &&
+      confLevel >= CONFIDENCE_ORDER.E2 &&
+      VALID_TRUTH_STATUSES.has(truthStatus ?? '')
+    ) {
+      return findings // Formulations are backed by real evidence
+    }
+  }
+
+  for (const { pattern, label, safeAlternative } of FORBIDDEN_PATTERNS) {
+    // Reset regex state for global patterns
+    pattern.lastIndex = 0
+    if (pattern.test(content)) {
+      findings.push({
+        id: `AFE-FORBIDDEN-${label.replace(/\s+/g, '_').toUpperCase()}`,
+        severity: 'error',
+        category: 'forbidden_formulation' as ValidationFinding['category'],
+        title: `Verbotene Formulierung: "${label}"`,
+        description: `Die Formulierung "${label}" impliziert eine nachgewiesene Compliance, die ohne ausreichenden Nachweis (Evidence >= E2, validiert) nicht verwendet werden darf.`,
+        documentType: 'vvt' as ScopeDocumentType,
+        suggestion: `Verwende stattdessen: "${safeAlternative}"`,
+      })
+    }
+  }
+
+  return findings
+}
+
 /**
  * Stufe 1: Deterministische Pruefung
  */
@@ -221,10 +291,18 @@ export async function POST(request: NextRequest) {
       // LLM unavailable, continue with deterministic results only
     }
 
+    // ---------------------------------------------------------------
+    // Stufe 1b: Verbotene Formulierungen (Anti-Fake-Evidence)
+    // ---------------------------------------------------------------
+    const forbiddenFindings = checkForbiddenFormulations(
+      draftContent || '',
+      validationContext.evidenceContext,
+    )
+
     // ---------------------------------------------------------------
     // Combine results
     // ---------------------------------------------------------------
-    const allFindings = [...deterministicFindings, ...llmFindings]
+    const allFindings = [...deterministicFindings, ...forbiddenFindings, ...llmFindings]
     const errors = allFindings.filter(f => f.severity === 'error')
     const warnings = allFindings.filter(f => f.severity === 'warning')
     const suggestions = allFindings.filter(f => f.severity === 'suggestion')