Use-Case-Mapping-Filter für Master Controls + Mapper-Präzisionsfix

Phase 2: Live-Filter an /sdk/master-controls (Use Case, Quell-Regulierung,
Verifikations-Methode, Coverage, Primärzweck-Toggle, category via Member-EXISTS).
API mit EXISTS-Filtern + gecachten Meta-Counts in master-controls/route.ts.

Phase A: neue UseCase telekommunikation + Fix der Impressum-Fehlrouten im
Register (TKG/AT-TKG->telekommunikation, telemedien->dse, GewO->handelsrecht);
echte Impressum-Quellen (TMG/Mediengesetz) bleiben impressum. Deterministischer
Seed aus source_regulation; Tests grün.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

admin-compliance/app/sdk/control-library/components/useControlLibraryState.ts

@@ -14,6 +14,11 @@ export interface ControlsMeta {
   category_counts?: Record<string, number>
   evidence_type_counts?: Record<string, number>
   release_state_counts?: Record<string, number>
+  // Master-control mapping dimensions (only returned by the MC endpoint)
+  use_case_counts?: Record<string, number>
+  regulations?: Array<{ source_regulation: string; count: number }>
+  mapped_total?: number
+  unmapped_count?: number
 }
 
 const PAGE_SIZE = 50
@@ -35,6 +40,10 @@ export function useControlLibraryState(backendUrlOverride?: string) {
   const [domainFilter, setDomainFilter] = useState<string>('')
   const [stateFilter, setStateFilter] = useState<string>('')
   const [verificationFilter, setVerificationFilter] = useState<string>('')
+  const [useCaseFilter, setUseCaseFilter] = useState<string>('')
+  const [primaryOnly, setPrimaryOnly] = useState<boolean>(false)
+  const [regulationFilter, setRegulationFilter] = useState<string>('')
+  const [mappedFilter, setMappedFilter] = useState<string>('')
   const [categoryFilter, setCategoryFilter] = useState<string>('')
   const [evidenceTypeFilter, setEvidenceTypeFilter] = useState<string>('')
   const [audienceFilter, setAudienceFilter] = useState<string>('')
@@ -88,6 +97,10 @@ export function useControlLibraryState(backendUrlOverride?: string) {
     if (domainFilter) p.set('domain', domainFilter)
     if (stateFilter) p.set('release_state', stateFilter)
     if (verificationFilter) p.set('verification_method', verificationFilter)
+    if (useCaseFilter) p.set('use_case', useCaseFilter)
+    if (primaryOnly) p.set('primary', '1')
+    if (regulationFilter) p.set('source_regulation', regulationFilter)
+    if (mappedFilter) p.set('mapped', mappedFilter)
     if (categoryFilter) p.set('category', categoryFilter)
     if (evidenceTypeFilter) p.set('evidence_type', evidenceTypeFilter)
     if (audienceFilter) p.set('target_audience', audienceFilter)
@@ -97,7 +110,7 @@ export function useControlLibraryState(backendUrlOverride?: string) {
     if (debouncedSearch) p.set('search', debouncedSearch)
     if (extra) for (const [k, v] of Object.entries(extra)) p.set(k, v)
     return p.toString()
-  }, [severityFilter, domainFilter, stateFilter, verificationFilter, categoryFilter, evidenceTypeFilter, audienceFilter, sourceFilter, typeFilter, hideDuplicates, debouncedSearch])
+  }, [severityFilter, domainFilter, stateFilter, verificationFilter, useCaseFilter, primaryOnly, regulationFilter, mappedFilter, categoryFilter, evidenceTypeFilter, audienceFilter, sourceFilter, typeFilter, hideDuplicates, debouncedSearch])
 
   const loadFrameworks = useCallback(async () => {
     try {
@@ -156,7 +169,7 @@ export function useControlLibraryState(backendUrlOverride?: string) {
   useEffect(() => { loadFrameworks(); loadReviewCount() }, [loadFrameworks, loadReviewCount])
   useEffect(() => { loadMeta() }, [loadMeta])
   useEffect(() => { loadControls() }, [loadControls])
-  useEffect(() => { setCurrentPage(1) }, [severityFilter, domainFilter, stateFilter, verificationFilter, categoryFilter, evidenceTypeFilter, audienceFilter, sourceFilter, typeFilter, hideDuplicates, debouncedSearch, sortBy])
+  useEffect(() => { setCurrentPage(1) }, [severityFilter, domainFilter, stateFilter, verificationFilter, useCaseFilter, primaryOnly, regulationFilter, mappedFilter, categoryFilter, evidenceTypeFilter, audienceFilter, sourceFilter, typeFilter, hideDuplicates, debouncedSearch, sortBy])
 
   const totalPages = Math.max(1, Math.ceil(totalCount / PAGE_SIZE))
 
@@ -212,6 +225,10 @@ export function useControlLibraryState(backendUrlOverride?: string) {
     domainFilter, setDomainFilter,
     stateFilter, setStateFilter,
     verificationFilter, setVerificationFilter,
+    useCaseFilter, setUseCaseFilter,
+    primaryOnly, setPrimaryOnly,
+    regulationFilter, setRegulationFilter,
+    mappedFilter, setMappedFilter,
     categoryFilter, setCategoryFilter,
     evidenceTypeFilter, setEvidenceTypeFilter,
     audienceFilter, setAudienceFilter,