fix(quality): Ruff/CVE/TS-Fixes, 104 neue Tests, Complexity-Refactoring

- Ruff: 144 auto-fixes (unused imports, == None → is None), F821/F811/F841 manuell
- CVEs: python-multipart>=0.0.22, weasyprint>=68.0, pillow>=12.1.1, npm audit fix (0 vulns)
- TS: 5 tote Drafting-Engine-Dateien entfernt, allowed-facts/sanitizer/StepHeader/context fixes
- Tests: +104 (ISMS 58, Evidence 18, VVT 14, Generation 14) → 1449 passed
- Refactoring: collect_ci_evidence (F→A), row_to_response (E→A), extract_requirements (E→A)
- Dead Code: pca-platform, 7 Go-Handler, dsr_api.py, duplicate Schemas entfernt

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

admin-compliance/app/sdk/email-templates/page.tsx

@@ -2,7 +2,7 @@
 
 import React, { useState, useEffect, useCallback } from 'react'
 import { useSDK } from '@/lib/sdk'
-import { StepHeader, STEP_EXPLANATIONS } from '@/components/sdk/StepHeader'
+import { StepHeader } from '@/components/sdk/StepHeader'
 
 // =============================================================================
 // TYPES
@@ -321,16 +321,7 @@ export default function EmailTemplatesPage() {
 
   return (
     <div className="space-y-6">
-      <StepHeader stepId="email-templates" explanation={STEP_EXPLANATIONS['email-templates'] || {
-        title: 'E-Mail-Templates',
-        description: 'Verwalten Sie Vorlagen fuer alle DSGVO-relevanten Benachrichtigungen.',
-        steps: [
-          'Template-Typen und Variablen pruefen',
-          'Inhalte im Editor anpassen',
-          'Vorschau pruefen und publizieren',
-          'Branding-Einstellungen konfigurieren',
-        ],
-      }} />
+      <StepHeader stepId="email-templates" />
 
       {error && (
         <div className="bg-red-50 border border-red-200 rounded-lg p-3 text-sm text-red-700">