refactor: Integrate Modules into Scope-Decision (Option C)

- RegulationsPanel: added enable/disable toggles per regulation
- ScopeDecisionTab: passes enabledModules + onToggleModule
- Scope page: auto-enables all applicable regulations when loaded
- Modules step: isOptional=true, moved to Zusatzmodule
- Requirements: now depends on compliance-scope, not modules
- Source-policy: now depends on use-case-assessment, not modules

Flow: Profile → Scope → Scope-Decision shows applicable regulations
with toggles → Requirements derived from enabled regulations

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

admin-compliance/app/sdk/compliance-scope/page.tsx

@@ -78,6 +78,14 @@ export default function ComplianceScopePage() {
   const [supervisoryAuthorities, setSupervisoryAuthorities] = useState<SupervisoryAuthorityInfo[]>([])
   const [regulationAssessmentLoading, setRegulationAssessmentLoading] = useState(false)
 
+  // Enabled compliance modules (derived from applicable regulations)
+  const [enabledModules, setEnabledModules] = useState<string[]>([])
+
+  // Auto-enable all applicable regulations when they load
+  const handleToggleModule = (moduleId: string, enabled: boolean) => {
+    setEnabledModules(prev => enabled ? [...prev, moduleId] : prev.filter(id => id !== moduleId))
+  }
+
   // Sync from SDK context when it becomes available (handles async loading).
   // The SDK context loads state from server/localStorage asynchronously, so
   // sdkState.complianceScope may arrive AFTER this page has already mounted.
@@ -159,6 +167,10 @@ export default function ComplianceScopePage() {
       // Set applicable regulations from response
       const regs: ApplicableRegulation[] = data.overview?.applicable_regulations || data.applicable_regulations || []
       setApplicableRegulations(regs)
+      // Auto-enable all applicable regulations as modules
+      if (enabledModules.length === 0) {
+        setEnabledModules(regs.map(r => r.id))
+      }
 
       // Derive supervisory authorities
       const regIds = regs.map(r => r.id)
@@ -375,6 +387,8 @@ export default function ComplianceScopePage() {
               supervisoryAuthorities={supervisoryAuthorities}
               regulationAssessmentLoading={regulationAssessmentLoading}
               onGoToObligations={() => { window.location.href = '/sdk/obligations' }}
+              enabledModules={enabledModules}
+              onToggleModule={handleToggleModule}
             />
           )}