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>

backend-compliance/compliance/tests/test_isms_routes.py

@@ -16,7 +16,7 @@ Run with: pytest backend/compliance/tests/test_isms_routes.py -v
 
 import pytest
 from datetime import datetime, date
-from unittest.mock import MagicMock, patch
+from unittest.mock import MagicMock
 from uuid import uuid4
 
 from sqlalchemy.orm import Session
@@ -25,7 +25,7 @@ import sys
 sys.path.insert(0, '/Users/benjaminadmin/Projekte/breakpilot-pwa/backend')
 
 from compliance.db.models import (
-    ISMSScopeDB, ISMSContextDB, ISMSPolicyDB, SecurityObjectiveDB,
+    ISMSScopeDB, ISMSPolicyDB, SecurityObjectiveDB,
     StatementOfApplicabilityDB, AuditFindingDB, CorrectiveActionDB,
     ManagementReviewDB, InternalAuditDB, AuditTrailDB, ISMSReadinessCheckDB,
     ApprovalStatusEnum, FindingTypeEnum, FindingStatusEnum, CAPATypeEnum
@@ -393,7 +393,7 @@ class TestAuditFinding:
         # is_blocking is a property, so we check the type
         is_blocking = (sample_major_finding.finding_type == FindingTypeEnum.MAJOR and
                        sample_major_finding.status != FindingStatusEnum.CLOSED)
-        assert is_blocking == True
+        assert is_blocking
 
     def test_finding_has_objective_evidence(self, sample_finding):
         """Findings should have objective evidence."""
@@ -524,7 +524,7 @@ class TestISMSReadinessCheck:
             readiness_score=30.0,
         )
 
-        assert check.certification_possible == False
+        assert not check.certification_possible
         assert len(check.potential_majors) >= 1
         assert check.readiness_score < 100
 
@@ -551,7 +551,7 @@ class TestISMSReadinessCheck:
         assert check.chapter_4_status == "pass"
         assert check.chapter_5_status == "pass"
         assert check.chapter_9_status == "pass"
-        assert check.certification_possible == True
+        assert check.certification_possible
 
 
 # ============================================================================
@@ -660,7 +660,7 @@ class TestCertificationBlockers:
 
         is_blocking = (finding.finding_type == FindingTypeEnum.MAJOR and
                        finding.status != FindingStatusEnum.CLOSED)
-        assert is_blocking == True
+        assert is_blocking
 
     def test_closed_major_allows_certification(self):
         """Closed major findings should not block certification."""
@@ -677,7 +677,7 @@ class TestCertificationBlockers:
 
         is_blocking = (finding.finding_type == FindingTypeEnum.MAJOR and
                        finding.status != FindingStatusEnum.CLOSED)
-        assert is_blocking == False
+        assert not is_blocking
 
     def test_minor_findings_dont_block_certification(self):
         """Minor findings should not block certification."""
@@ -693,4 +693,4 @@ class TestCertificationBlockers:
 
         is_blocking = (finding.finding_type == FindingTypeEnum.MAJOR and
                        finding.status != FindingStatusEnum.CLOSED)
-        assert is_blocking == False
+        assert not is_blocking