feat: DSFA Section 8 KI-Anwendungsfälle + Bundesland RAG-Ingest

- Migration 028: ai_use_case_modules JSONB + section_8_complete auf compliance_dsfas
- Neues ai-use-case-types.ts: AIUseCaseModule Interface, 8 Typen, Art22Assessment,
  AI Act Risikoklassen, WP248-Kriterien, Privacy by Design, createEmptyModule() Helper
- types.ts: Section 8 in DSFA_SECTIONS, ai_use_case_modules im DSFA Interface,
  section_8_complete in DSFASectionProgress
- api.ts: addAIUseCaseModule, updateAIUseCaseModule, removeAIUseCaseModule
- 5 neue UI-Komponenten: AIUseCaseTypeSelector, Art22AssessmentPanel,
  AIRiskCriteriaChecklist, AIUseCaseModuleEditor (7 Tabs), AIUseCaseSection
- DSFASidebar: Section 8 Eintrag + calculateSectionProgress case 8
- ReviewScheduleSection: ai_use_case_module Trigger-Typ ergänzt
- page.tsx: Section 8 Rendering + Weiter-Button auf activeSection < 8 + KI-Module Counter
- scripts/ingest-dsfa-bundesland.sh: WP248 + alle 17 Behörden → bp_dsfa_corpus
- Docs: dsfa.md Section 8 + RAG-Corpus, Developer Portal DSFA mit AI-Modul-Code-Beispielen

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

admin-compliance/lib/sdk/dsfa/api.ts

@@ -16,6 +16,7 @@ import type {
   ApproveDSFARequest,
   DSFATriggerInfo,
 } from './types'
+import type { AIUseCaseModule } from './ai-use-case-types'
 
 // =============================================================================
 // CONFIGURATION
@@ -386,6 +387,44 @@ export async function updateDSFAMitigationStatus(
 // HELPER FUNCTIONS
 // =============================================================================
 
+// =============================================================================
+// AI USE CASE MODULE OPERATIONS
+// =============================================================================
+
+/**
+ * Add a new AI use case module to a DSFA (Section 8)
+ */
+export async function addAIUseCaseModule(dsfaId: string, module: AIUseCaseModule): Promise<DSFA> {
+  const dsfa = await getDSFA(dsfaId)
+  const existing = dsfa.ai_use_case_modules || []
+  return updateDSFA(dsfaId, { ai_use_case_modules: [...existing, module] } as Partial<DSFA>)
+}
+
+/**
+ * Update an existing AI use case module in a DSFA
+ */
+export async function updateAIUseCaseModule(
+  dsfaId: string,
+  moduleId: string,
+  updates: Partial<AIUseCaseModule>
+): Promise<DSFA> {
+  const dsfa = await getDSFA(dsfaId)
+  const existing = dsfa.ai_use_case_modules || []
+  const updated = existing.map(m =>
+    m.id === moduleId ? { ...m, ...updates, updated_at: new Date().toISOString() } : m
+  )
+  return updateDSFA(dsfaId, { ai_use_case_modules: updated } as Partial<DSFA>)
+}
+
+/**
+ * Remove an AI use case module from a DSFA
+ */
+export async function removeAIUseCaseModule(dsfaId: string, moduleId: string): Promise<DSFA> {
+  const dsfa = await getDSFA(dsfaId)
+  const updated = (dsfa.ai_use_case_modules || []).filter(m => m.id !== moduleId)
+  return updateDSFA(dsfaId, { ai_use_case_modules: updated } as Partial<DSFA>)
+}
+
 function calculateRiskLevelString(
   likelihood: 'low' | 'medium' | 'high',
   impact: 'low' | 'medium' | 'high'