feat(sdk): Add DSFA (Art. 35 DSGVO) Editor and API Client

Implements comprehensive Data Protection Impact Assessment tooling:
- 5-section wizard following Art. 35 DSGVO structure
- Interactive risk matrix with likelihood/impact scoring
- Mitigation management linked to risks
- DPO approval workflow (draft → in_review → approved/rejected)
- UCCA integration for auto-triggering DSFA from assessments
- Full TypeScript types and API client with 42 test cases

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

admin-v2/lib/sdk/dsfa/index.ts

@@ -0,0 +1,8 @@
+/**
+ * DSFA Module
+ *
+ * Exports for DSFA (Data Protection Impact Assessment) functionality.
+ */
+
+export * from './types'
+export * from './api'