feat(sdk): Multi-Tenancy, Versionierung, Change-Requests, Dokumentengenerierung (Phase 1-6)

6-Phasen-Implementation fuer cloud-faehiges, mandantenfaehiges Compliance SDK:

Phase 1: Multi-Tenancy Fix
- Shared tenant_utils.py Dependency (UUID-Validierung, kein "default" mehr)
- VVT tenant_id Column + tenant-scoped Queries
- DSFA/Vendor DEFAULT_TENANT_ID von "default" auf UUID migriert
- Migration 035

Phase 2: Stammdaten-Erweiterung
- Company Profile um JSONB-Felder erweitert (processing_systems, ai_systems, technical_contacts)
- Regulierungs-Flags (NIS2, AI Act, ISO 27001)
- GET /template-context Endpoint
- Migration 036

Phase 3: Dokument-Versionierung
- 5 Versions-Tabellen (DSFA, VVT, TOM, Loeschfristen, Obligations)
- Shared versioning_utils.py Helper
- /{id}/versions Endpoints auf allen 5 Dokumenttypen
- Migration 037

Phase 4: Change-Request System
- Zentrale CR-Inbox mit CRUD + Accept/Reject/Edit Workflow
- Regelbasierte CR-Engine (VVT DPIA → DSFA CR, Datenkategorien → Loeschfristen CR)
- Audit-Trail
- Migration 038

Phase 5: Dokumentengenerierung
- 5 Template-Generatoren (DSFA, VVT, TOM, Loeschfristen, Obligations)
- Preview + Apply Endpoints (erzeugt CRs, keine direkten Dokumente)

Phase 6: Frontend-Integration
- Change-Request Inbox Page mit Stats, Filtern, Modals
- VersionHistory Timeline-Komponente
- SDKSidebar CR-Badge (60s Polling)
- Company Profile: 2 neue Wizard-Steps + "Dokumente generieren" CTA

Docs: 5 neue MkDocs-Seiten, CLAUDE.md aktualisiert
Tests: 97 neue Tests (alle bestanden)

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

.claude/CLAUDE.md

@@ -269,18 +269,55 @@ POST/GET /api/v1/compliance/evidence
 POST/GET /api/v1/dsr/requests
 POST/GET /api/v1/gdpr/exports
 POST/GET /api/v1/consent/admin
+
+# Stammdaten, Versionierung & Change-Requests (Phase 1-6, 2026-03-07)
+GET/POST/DELETE /api/compliance/company-profile
+GET /api/compliance/company-profile/template-context
+GET /api/compliance/change-requests
+GET /api/compliance/change-requests/stats
+POST /api/compliance/change-requests/{id}/accept
+POST /api/compliance/change-requests/{id}/reject
+POST /api/compliance/change-requests/{id}/edit
+GET /api/compliance/generation/preview/{doc_type}
+POST /api/compliance/generation/apply/{doc_type}
+GET /api/compliance/{doc}/{id}/versions
 ```
 
+### Multi-Tenancy
+- Shared Dependency: `compliance/api/tenant_utils.py` (`get_tenant_id()`)
+- UUID-Format, kein `"default"` mehr
+- Header `X-Tenant-ID` > Query `tenant_id` > ENV-Fallback
+
+### Migrations (035-038)
+| Nr | Datei | Beschreibung |
+|----|-------|--------------|
+| 035 | `migrations/035_vvt_tenant_isolation.sql` | VVT tenant_id + DSFA/Vendor default→UUID |
+| 036 | `migrations/036_company_profile_extend.sql` | Stammdaten JSONB + Regulierungs-Flags |
+| 037 | `migrations/037_document_versions.sql` | 5 Versions-Tabellen + current_version |
+| 038 | `migrations/038_change_requests.sql` | Change-Requests + Audit-Log |
+
+### Neue Backend-Module
+| Datei | Beschreibung |
+|-------|--------------|
+| `compliance/api/tenant_utils.py` | Shared Tenant-ID Dependency |
+| `compliance/api/versioning_utils.py` | Shared Versioning Helper |
+| `compliance/api/change_request_routes.py` | CR CRUD + Accept/Reject/Edit |
+| `compliance/api/change_request_engine.py` | Regelbasierte CR-Generierung |
+| `compliance/api/generation_routes.py` | Dokumentengenerierung aus Stammdaten |
+| `compliance/api/document_templates/` | 5 Template-Generatoren (DSFA, VVT, TOM, etc.) |
+
 ---
 
 ## Wichtige Dateien (Referenz)
 
 | Datei | Beschreibung |
 |-------|--------------|
-| `admin-compliance/app/(sdk)/` | Alle 37 SDK-Routes |
-| `admin-compliance/components/sdk/SDKSidebar.tsx` | SDK Navigation |
+| `admin-compliance/app/(sdk)/` | Alle 37+ SDK-Routes |
+| `admin-compliance/app/(sdk)/sdk/change-requests/page.tsx` | Change-Request Inbox |
+| `admin-compliance/components/sdk/Sidebar/SDKSidebar.tsx` | SDK Navigation (mit CR-Badge) |
+| `admin-compliance/components/sdk/VersionHistory.tsx` | Versions-Timeline-Komponente |
 | `admin-compliance/components/sdk/CommandBar.tsx` | Command Palette |
 | `admin-compliance/lib/sdk/context.tsx` | SDK State (Provider) |
-| `backend-compliance/compliance/` | Haupt-Package (40 Dateien) |
+| `backend-compliance/compliance/` | Haupt-Package (50+ Dateien) |
 | `ai-compliance-sdk/` | KI-Compliance Analyse |
 | `developer-portal/` | API-Dokumentation |