diff --git a/admin-v2/app/(admin)/dashboard/catalog-manager/page.tsx b/admin-v2/app/(admin)/dashboard/catalog-manager/page.tsx
new file mode 100644
index 0000000..9948c94
--- /dev/null
+++ b/admin-v2/app/(admin)/dashboard/catalog-manager/page.tsx
@@ -0,0 +1,12 @@
+'use client'
+
+import { SDKProvider } from '@/lib/sdk/context'
+import { CatalogManagerContent } from '@/components/catalog-manager/CatalogManagerContent'
+
+export default function AdminCatalogManagerPage() {
+  return (
+    <SDKProvider>
+      <CatalogManagerContent />
+    </SDKProvider>
+  )
+}
diff --git a/admin-v2/app/(sdk)/sdk/catalog-manager/page.tsx b/admin-v2/app/(sdk)/sdk/catalog-manager/page.tsx
new file mode 100644
index 0000000..ee9d5be
--- /dev/null
+++ b/admin-v2/app/(sdk)/sdk/catalog-manager/page.tsx
@@ -0,0 +1,7 @@
+'use client'
+
+import { CatalogManagerContent } from '@/components/catalog-manager/CatalogManagerContent'
+
+export default function CatalogManagerPage() {
+  return <CatalogManagerContent />
+}
diff --git a/admin-v2/components/catalog-manager/CatalogEntryForm.tsx b/admin-v2/components/catalog-manager/CatalogEntryForm.tsx
new file mode 100644
index 0000000..ab06c00
--- /dev/null
+++ b/admin-v2/components/catalog-manager/CatalogEntryForm.tsx
@@ -0,0 +1,392 @@
+'use client'
+
+import { useState, useEffect, useCallback } from 'react'
+import { X } from 'lucide-react'
+import type {
+  CatalogMeta,
+  CatalogEntry,
+  CatalogFieldSchema,
+} from '@/lib/sdk/catalog-manager/types'
+
+interface CatalogEntryFormProps {
+  catalog: CatalogMeta
+  entry?: CatalogEntry | null
+  onSave: (data: Record<string, unknown>) => void
+  onCancel: () => void
+}
+
+export default function CatalogEntryForm({
+  catalog,
+  entry,
+  onSave,
+  onCancel,
+}: CatalogEntryFormProps) {
+  const isEditMode = entry !== null && entry !== undefined
+  const isSystemEntry = isEditMode && entry?.source === 'system'
+  const isCreateMode = !isEditMode
+
+  const title = isSystemEntry
+    ? 'Details'
+    : isEditMode
+      ? 'Eintrag bearbeiten'
+      : 'Neuer Eintrag'
+
+  const [formData, setFormData] = useState<Record<string, unknown>>({})
+  const [errors, setErrors] = useState<Record<string, string>>({})
+
+  // Initialize form data
+  useEffect(() => {
+    if (isEditMode && entry) {
+      const initialData: Record<string, unknown> = {}
+      for (const field of catalog.fields) {
+        initialData[field.key] = entry.data?.[field.key] ?? getDefaultValue(field)
+      }
+      setFormData(initialData)
+    } else {
+      const initialData: Record<string, unknown> = {}
+      for (const field of catalog.fields) {
+        initialData[field.key] = getDefaultValue(field)
+      }
+      setFormData(initialData)
+    }
+  }, [entry, catalog.fields, isEditMode])
+
+  function getDefaultValue(field: CatalogFieldSchema): unknown {
+    switch (field.type) {
+      case 'text':
+      case 'textarea':
+        return ''
+      case 'number':
+        return field.min ?? 0
+      case 'select':
+        return ''
+      case 'multiselect':
+        return []
+      case 'boolean':
+        return false
+      case 'tags':
+        return ''
+      default:
+        return ''
+    }
+  }
+
+  const handleFieldChange = useCallback(
+    (key: string, value: unknown) => {
+      setFormData(prev => ({ ...prev, [key]: value }))
+      // Clear error on change
+      if (errors[key]) {
+        setErrors(prev => {
+          const next = { ...prev }
+          delete next[key]
+          return next
+        })
+      }
+    },
+    [errors]
+  )
+
+  const handleMultiselectToggle = useCallback(
+    (key: string, option: string) => {
+      setFormData(prev => {
+        const current = (prev[key] as string[]) || []
+        const updated = current.includes(option)
+          ? current.filter(v => v !== option)
+          : [...current, option]
+        return { ...prev, [key]: updated }
+      })
+    },
+    []
+  )
+
+  const validate = (): boolean => {
+    const newErrors: Record<string, string> = {}
+
+    for (const field of catalog.fields) {
+      if (field.required) {
+        const value = formData[field.key]
+        if (value === undefined || value === null || value === '') {
+          newErrors[field.key] = `${field.label} ist ein Pflichtfeld`
+        } else if (Array.isArray(value) && value.length === 0) {
+          newErrors[field.key] = `Mindestens ein Wert erforderlich`
+        }
+      }
+    }
+
+    setErrors(newErrors)
+    return Object.keys(newErrors).length === 0
+  }
+
+  const handleSubmit = (e: React.FormEvent) => {
+    e.preventDefault()
+    if (isSystemEntry) return
+
+    if (validate()) {
+      // Convert tags string to array before saving
+      const processedData = { ...formData }
+      for (const field of catalog.fields) {
+        if (field.type === 'tags' && typeof processedData[field.key] === 'string') {
+          processedData[field.key] = (processedData[field.key] as string)
+            .split(',')
+            .map(t => t.trim())
+            .filter(Boolean)
+        }
+      }
+      onSave(processedData)
+    }
+  }
+
+  // Close on Escape key
+  useEffect(() => {
+    const handleKeyDown = (e: KeyboardEvent) => {
+      if (e.key === 'Escape') onCancel()
+    }
+    window.addEventListener('keydown', handleKeyDown)
+    return () => window.removeEventListener('keydown', handleKeyDown)
+  }, [onCancel])
+
+  const renderField = (field: CatalogFieldSchema) => {
+    const value = formData[field.key]
+    const hasError = !!errors[field.key]
+    const isDisabled = isSystemEntry
+
+    const baseInputClasses = `w-full px-3 py-2 text-sm border rounded-lg bg-white dark:bg-gray-700 text-gray-900 dark:text-gray-100 placeholder-gray-400 dark:placeholder-gray-500 focus:outline-none focus:ring-2 focus:ring-violet-500 focus:border-transparent transition-colors ${
+      hasError
+        ? 'border-red-400 dark:border-red-500'
+        : 'border-gray-300 dark:border-gray-600'
+    } ${isDisabled ? 'opacity-60 cursor-not-allowed bg-gray-50 dark:bg-gray-800' : ''}`
+
+    switch (field.type) {
+      case 'text':
+        return (
+          <input
+            type="text"
+            value={(value as string) || ''}
+            onChange={e => handleFieldChange(field.key, e.target.value)}
+            placeholder={field.placeholder || ''}
+            disabled={isDisabled}
+            className={baseInputClasses}
+          />
+        )
+
+      case 'textarea':
+        return (
+          <textarea
+            value={(value as string) || ''}
+            onChange={e => handleFieldChange(field.key, e.target.value)}
+            placeholder={field.placeholder || ''}
+            disabled={isDisabled}
+            rows={3}
+            className={`${baseInputClasses} resize-y`}
+          />
+        )
+
+      case 'number':
+        return (
+          <input
+            type="number"
+            value={(value as number) ?? ''}
+            onChange={e =>
+              handleFieldChange(
+                field.key,
+                e.target.value === '' ? '' : Number(e.target.value)
+              )
+            }
+            min={field.min}
+            max={field.max}
+            step={field.step ?? 1}
+            disabled={isDisabled}
+            className={baseInputClasses}
+          />
+        )
+
+      case 'select':
+        return (
+          <select
+            value={(value as string) || ''}
+            onChange={e => handleFieldChange(field.key, e.target.value)}
+            disabled={isDisabled}
+            className={baseInputClasses}
+          >
+            <option value="">-- Auswaehlen --</option>
+            {(field.options || []).map(opt => (
+              <option key={opt.value} value={opt.value}>
+                {opt.label}
+              </option>
+            ))}
+          </select>
+        )
+
+      case 'multiselect':
+        return (
+          <div className="space-y-1.5">
+            {(field.options || []).map(opt => {
+              const checked = ((value as string[]) || []).includes(opt.value)
+              return (
+                <label
+                  key={opt.value}
+                  className={`flex items-center gap-2 text-sm cursor-pointer ${
+                    isDisabled ? 'opacity-60 cursor-not-allowed' : ''
+                  }`}
+                >
+                  <input
+                    type="checkbox"
+                    checked={checked}
+                    onChange={() => handleMultiselectToggle(field.key, opt.value)}
+                    disabled={isDisabled}
+                    className="h-4 w-4 rounded border-gray-300 dark:border-gray-600 text-violet-600 focus:ring-violet-500"
+                  />
+                  <span className="text-gray-700 dark:text-gray-300">
+                    {opt.label}
+                  </span>
+                </label>
+              )
+            })}
+          </div>
+        )
+
+      case 'boolean':
+        return (
+          <label
+            className={`flex items-center gap-3 cursor-pointer ${
+              isDisabled ? 'opacity-60 cursor-not-allowed' : ''
+            }`}
+          >
+            <button
+              type="button"
+              role="switch"
+              aria-checked={!!value}
+              disabled={isDisabled}
+              onClick={() => !isDisabled && handleFieldChange(field.key, !value)}
+              className={`relative inline-flex h-6 w-11 shrink-0 rounded-full border-2 border-transparent transition-colors focus:outline-none focus:ring-2 focus:ring-violet-500 focus:ring-offset-2 dark:focus:ring-offset-gray-800 ${
+                value
+                  ? 'bg-violet-600'
+                  : 'bg-gray-200 dark:bg-gray-600'
+              }`}
+            >
+              <span
+                className={`pointer-events-none inline-block h-5 w-5 transform rounded-full bg-white shadow ring-0 transition-transform ${
+                  value ? 'translate-x-5' : 'translate-x-0'
+                }`}
+              />
+            </button>
+            <span className="text-sm text-gray-700 dark:text-gray-300">
+              {value ? 'Ja' : 'Nein'}
+            </span>
+          </label>
+        )
+
+      case 'tags':
+        return (
+          <div>
+            <input
+              type="text"
+              value={
+                Array.isArray(value)
+                  ? (value as string[]).join(', ')
+                  : (value as string) || ''
+              }
+              onChange={e => handleFieldChange(field.key, e.target.value)}
+              placeholder={field.placeholder || 'Komma-getrennte Tags eingeben...'}
+              disabled={isDisabled}
+              className={baseInputClasses}
+            />
+            <p className="mt-1 text-xs text-gray-400 dark:text-gray-500">
+              Mehrere Tags durch Komma trennen
+            </p>
+          </div>
+        )
+
+      default:
+        return null
+    }
+  }
+
+  return (
+    // Backdrop
+    <div
+      className="fixed inset-0 z-50 flex items-center justify-center bg-black/50 backdrop-blur-sm p-4"
+      onClick={e => {
+        if (e.target === e.currentTarget) onCancel()
+      }}
+    >
+      {/* Modal */}
+      <div className="relative w-full max-w-lg max-h-[90vh] bg-white dark:bg-gray-800 rounded-xl shadow-2xl flex flex-col">
+        {/* Header */}
+        <div className="flex items-center justify-between px-6 py-4 border-b border-gray-200 dark:border-gray-700 shrink-0">
+          <div>
+            <h2 className="text-lg font-semibold text-gray-900 dark:text-white">
+              {title}
+            </h2>
+            <p className="text-sm text-gray-500 dark:text-gray-400">
+              {catalog.name}
+            </p>
+          </div>
+          <button
+            onClick={onCancel}
+            className="p-1.5 text-gray-400 hover:text-gray-600 dark:hover:text-gray-200 hover:bg-gray-100 dark:hover:bg-gray-700 rounded-lg transition-colors"
+            title="Schliessen"
+          >
+            <X className="h-5 w-5" />
+          </button>
+        </div>
+
+        {/* Body */}
+        <form onSubmit={handleSubmit} className="flex-1 overflow-y-auto">
+          <div className="px-6 py-4 space-y-5">
+            {catalog.fields.map(field => (
+              <div key={field.key}>
+                <label className="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-1.5">
+                  {field.label}
+                  {field.required && !isSystemEntry && (
+                    <span className="text-red-500 ml-0.5">*</span>
+                  )}
+                </label>
+                {field.description && (
+                  <p className="text-xs text-gray-400 dark:text-gray-500 mb-1.5">
+                    {field.description}
+                  </p>
+                )}
+                {renderField(field)}
+                {errors[field.key] && (
+                  <p className="mt-1 text-xs text-red-500 dark:text-red-400">
+                    {errors[field.key]}
+                  </p>
+                )}
+              </div>
+            ))}
+          </div>
+
+          {/* Footer */}
+          <div className="flex items-center justify-end gap-3 px-6 py-4 border-t border-gray-200 dark:border-gray-700 shrink-0">
+            {isSystemEntry ? (
+              <button
+                type="button"
+                onClick={onCancel}
+                className="px-4 py-2 text-sm font-medium text-gray-700 dark:text-gray-300 bg-gray-100 dark:bg-gray-700 hover:bg-gray-200 dark:hover:bg-gray-600 rounded-lg transition-colors"
+              >
+                Schliessen
+              </button>
+            ) : (
+              <>
+                <button
+                  type="button"
+                  onClick={onCancel}
+                  className="px-4 py-2 text-sm font-medium text-gray-700 dark:text-gray-300 bg-gray-100 dark:bg-gray-700 hover:bg-gray-200 dark:hover:bg-gray-600 rounded-lg transition-colors"
+                >
+                  Abbrechen
+                </button>
+                <button
+                  type="submit"
+                  className="px-4 py-2 text-sm font-medium text-white bg-violet-600 hover:bg-violet-700 rounded-lg transition-colors"
+                >
+                  {isCreateMode ? 'Erstellen' : 'Speichern'}
+                </button>
+              </>
+            )}
+          </div>
+        </form>
+      </div>
+    </div>
+  )
+}
diff --git a/admin-v2/components/catalog-manager/CatalogManagerContent.tsx b/admin-v2/components/catalog-manager/CatalogManagerContent.tsx
new file mode 100644
index 0000000..14a6c56
--- /dev/null
+++ b/admin-v2/components/catalog-manager/CatalogManagerContent.tsx
@@ -0,0 +1,381 @@
+'use client'
+
+import { useState, useMemo, useCallback } from 'react'
+import { useSDK } from '@/lib/sdk'
+import {
+  Database,
+  Search,
+  Plus,
+  ChevronDown,
+  ChevronRight,
+  BarChart3,
+  Layers,
+  Users,
+  Settings,
+} from 'lucide-react'
+import type {
+  CatalogId,
+  CatalogModule,
+  CatalogEntry,
+  CatalogMeta,
+  CustomCatalogEntry,
+} from '@/lib/sdk/catalog-manager/types'
+import { CATALOG_MODULE_LABELS } from '@/lib/sdk/catalog-manager/types'
+import {
+  CATALOG_REGISTRY,
+  getAllEntries,
+  getCatalogsByModule,
+  getOverviewStats,
+  searchCatalog,
+} from '@/lib/sdk/catalog-manager/catalog-registry'
+import CatalogModuleTabs from '@/components/catalog-manager/CatalogModuleTabs'
+import CatalogTable from '@/components/catalog-manager/CatalogTable'
+import CatalogEntryForm from '@/components/catalog-manager/CatalogEntryForm'
+
+// =============================================================================
+// STAT CARD COMPONENT
+// =============================================================================
+
+interface StatCardProps {
+  icon: React.ReactNode
+  label: string
+  value: number
+  color: 'violet' | 'blue' | 'emerald' | 'amber'
+}
+
+const colorMap = {
+  violet: {
+    bg: 'bg-violet-50 dark:bg-violet-900/20',
+    text: 'text-violet-600 dark:text-violet-400',
+  },
+  blue: {
+    bg: 'bg-blue-50 dark:bg-blue-900/20',
+    text: 'text-blue-600 dark:text-blue-400',
+  },
+  emerald: {
+    bg: 'bg-emerald-50 dark:bg-emerald-900/20',
+    text: 'text-emerald-600 dark:text-emerald-400',
+  },
+  amber: {
+    bg: 'bg-amber-50 dark:bg-amber-900/20',
+    text: 'text-amber-600 dark:text-amber-400',
+  },
+}
+
+function StatCard({ icon, label, value, color }: StatCardProps) {
+  const colors = colorMap[color]
+  return (
+    <div className={`flex items-center gap-3 px-4 py-3 rounded-xl ${colors.bg}`}>
+      <div className={colors.text}>{icon}</div>
+      <div>
+        <p className="text-xs text-gray-500 dark:text-gray-400">{label}</p>
+        <p className={`text-lg font-bold ${colors.text}`}>{value.toLocaleString('de-DE')}</p>
+      </div>
+    </div>
+  )
+}
+
+// =============================================================================
+// MAIN CONTENT COMPONENT
+// =============================================================================
+
+export function CatalogManagerContent() {
+  const { state, dispatch } = useSDK()
+  const customCatalogs = state.customCatalogs ?? {}
+
+  // UI State
+  const [activeModule, setActiveModule] = useState<CatalogModule | 'all'>('all')
+  const [selectedCatalogId, setSelectedCatalogId] = useState<CatalogId | null>(null)
+  const [searchQuery, setSearchQuery] = useState('')
+  const [expandedCatalogs, setExpandedCatalogs] = useState<Set<CatalogId>>(new Set())
+  const [formState, setFormState] = useState<{
+    open: boolean
+    catalog: CatalogMeta | null
+    entry: CatalogEntry | null
+  }>({ open: false, catalog: null, entry: null })
+
+  // Computed data
+  const overviewStats = useMemo(() => getOverviewStats(customCatalogs), [customCatalogs])
+
+  const visibleCatalogs = useMemo(() => {
+    if (activeModule === 'all') {
+      return Object.values(CATALOG_REGISTRY)
+    }
+    return getCatalogsByModule(activeModule)
+  }, [activeModule])
+
+  const selectedCatalog = selectedCatalogId ? CATALOG_REGISTRY[selectedCatalogId] : null
+
+  const catalogEntries = useMemo(() => {
+    if (!selectedCatalogId) return []
+    const custom = customCatalogs[selectedCatalogId] || []
+    if (searchQuery.trim()) {
+      return searchCatalog(selectedCatalogId, searchQuery, custom)
+    }
+    return getAllEntries(selectedCatalogId, custom)
+  }, [selectedCatalogId, customCatalogs, searchQuery])
+
+  // Handlers
+  const toggleCatalogExpand = useCallback((id: CatalogId) => {
+    setExpandedCatalogs(prev => {
+      const next = new Set(prev)
+      if (next.has(id)) {
+        next.delete(id)
+      } else {
+        next.add(id)
+      }
+      return next
+    })
+  }, [])
+
+  const handleSelectCatalog = useCallback((id: CatalogId) => {
+    setSelectedCatalogId(id)
+    setSearchQuery('')
+  }, [])
+
+  const handleAddEntry = useCallback((catalog: CatalogMeta) => {
+    setFormState({ open: true, catalog, entry: null })
+  }, [])
+
+  const handleEditEntry = useCallback((catalog: CatalogMeta, entry: CatalogEntry) => {
+    setFormState({ open: true, catalog, entry })
+  }, [])
+
+  const handleCloseForm = useCallback(() => {
+    setFormState({ open: false, catalog: null, entry: null })
+  }, [])
+
+  const handleSaveEntry = useCallback((data: Record<string, unknown>) => {
+    if (!formState.catalog) return
+
+    if (formState.entry && formState.entry.source === 'custom') {
+      // Update existing custom entry
+      dispatch({
+        type: 'UPDATE_CUSTOM_CATALOG_ENTRY',
+        payload: {
+          catalogId: formState.catalog.id,
+          entryId: formState.entry.id,
+          data,
+        },
+      })
+    } else {
+      // Create new custom entry
+      const newEntry: CustomCatalogEntry = {
+        id: crypto.randomUUID(),
+        catalogId: formState.catalog.id,
+        data,
+        createdAt: new Date().toISOString(),
+        updatedAt: new Date().toISOString(),
+      }
+      dispatch({
+        type: 'ADD_CUSTOM_CATALOG_ENTRY',
+        payload: newEntry,
+      })
+    }
+
+    handleCloseForm()
+  }, [formState, dispatch, handleCloseForm])
+
+  const handleDeleteEntry = useCallback((catalogId: CatalogId, entryId: string) => {
+    dispatch({
+      type: 'DELETE_CUSTOM_CATALOG_ENTRY',
+      payload: { catalogId, entryId },
+    })
+  }, [dispatch])
+
+  // =============================================================================
+  // RENDER
+  // =============================================================================
+
+  return (
+    <div className="min-h-screen bg-gray-50 dark:bg-gray-900">
+      {/* Header */}
+      <div className="bg-white dark:bg-gray-800 border-b border-gray-200 dark:border-gray-700">
+        <div className="max-w-7xl mx-auto px-6 py-6">
+          <div className="flex items-center justify-between">
+            <div className="flex items-center gap-4">
+              <div className="p-3 bg-violet-100 dark:bg-violet-900/30 rounded-xl">
+                <Database className="h-6 w-6 text-violet-600 dark:text-violet-400" />
+              </div>
+              <div>
+                <h1 className="text-2xl font-bold text-gray-900 dark:text-white">
+                  Katalogverwaltung
+                </h1>
+                <p className="text-sm text-gray-500 dark:text-gray-400 mt-0.5">
+                  Alle SDK-Kataloge und Auswahltabellen zentral verwalten
+                </p>
+              </div>
+            </div>
+          </div>
+
+          {/* Stats Bar */}
+          <div className="grid grid-cols-4 gap-4 mt-6">
+            <StatCard
+              icon={<Layers className="h-5 w-5" />}
+              label="Kataloge"
+              value={overviewStats.totalCatalogs}
+              color="violet"
+            />
+            <StatCard
+              icon={<Database className="h-5 w-5" />}
+              label="System-Eintraege"
+              value={overviewStats.totalSystemEntries}
+              color="blue"
+            />
+            <StatCard
+              icon={<Users className="h-5 w-5" />}
+              label="Eigene Eintraege"
+              value={overviewStats.totalCustomEntries}
+              color="emerald"
+            />
+            <StatCard
+              icon={<BarChart3 className="h-5 w-5" />}
+              label="Gesamt"
+              value={overviewStats.totalEntries}
+              color="amber"
+            />
+          </div>
+        </div>
+      </div>
+
+      {/* Module Tabs */}
+      <div className="max-w-7xl mx-auto px-6 mt-6">
+        <CatalogModuleTabs
+          activeModule={activeModule}
+          onModuleChange={setActiveModule}
+          stats={overviewStats}
+        />
+      </div>
+
+      {/* Content Area */}
+      <div className="max-w-7xl mx-auto px-6 py-6">
+        <div className="grid grid-cols-12 gap-6">
+          {/* Left: Catalog List */}
+          <div className="col-span-4">
+            <div className="bg-white dark:bg-gray-800 rounded-xl shadow border border-gray-200 dark:border-gray-700 overflow-hidden">
+              <div className="px-4 py-3 border-b border-gray-200 dark:border-gray-700">
+                <h2 className="text-sm font-semibold text-gray-700 dark:text-gray-300">
+                  {activeModule === 'all'
+                    ? 'Alle Kataloge'
+                    : CATALOG_MODULE_LABELS[activeModule]}
+                  <span className="ml-2 text-gray-400 font-normal">
+                    ({visibleCatalogs.length})
+                  </span>
+                </h2>
+              </div>
+
+              <div className="divide-y divide-gray-100 dark:divide-gray-700/50 max-h-[calc(100vh-400px)] overflow-y-auto">
+                {visibleCatalogs.map(catalog => {
+                  const customCount = customCatalogs[catalog.id]?.length ?? 0
+                  const isSelected = selectedCatalogId === catalog.id
+
+                  return (
+                    <button
+                      key={catalog.id}
+                      onClick={() => handleSelectCatalog(catalog.id)}
+                      className={`w-full text-left px-4 py-3 transition-colors ${
+                        isSelected
+                          ? 'bg-violet-50 dark:bg-violet-900/20 border-l-3 border-l-violet-600'
+                          : 'hover:bg-gray-50 dark:hover:bg-gray-700/50'
+                      }`}
+                    >
+                      <div className="flex items-center justify-between">
+                        <div className="min-w-0">
+                          <p className={`text-sm font-medium truncate ${
+                            isSelected
+                              ? 'text-violet-700 dark:text-violet-300'
+                              : 'text-gray-900 dark:text-white'
+                          }`}>
+                            {catalog.name}
+                          </p>
+                          <p className="text-xs text-gray-500 dark:text-gray-400 mt-0.5 truncate">
+                            {catalog.description}
+                          </p>
+                        </div>
+                        <div className="flex items-center gap-2 ml-2 shrink-0">
+                          <span className="inline-flex items-center px-2 py-0.5 text-xs font-medium rounded-full bg-gray-100 dark:bg-gray-700 text-gray-600 dark:text-gray-400">
+                            {catalog.systemCount}
+                          </span>
+                          {customCount > 0 && (
+                            <span className="inline-flex items-center px-2 py-0.5 text-xs font-medium rounded-full bg-blue-100 dark:bg-blue-900/30 text-blue-600 dark:text-blue-400">
+                              +{customCount}
+                            </span>
+                          )}
+                        </div>
+                      </div>
+                    </button>
+                  )
+                })}
+              </div>
+            </div>
+          </div>
+
+          {/* Right: Catalog Detail / Table */}
+          <div className="col-span-8">
+            {selectedCatalog ? (
+              <div className="bg-white dark:bg-gray-800 rounded-xl shadow border border-gray-200 dark:border-gray-700 overflow-hidden">
+                {/* Catalog Header */}
+                <div className="px-6 py-4 border-b border-gray-200 dark:border-gray-700">
+                  <div className="flex items-center justify-between">
+                    <div>
+                      <h2 className="text-lg font-semibold text-gray-900 dark:text-white">
+                        {selectedCatalog.name}
+                      </h2>
+                      <p className="text-sm text-gray-500 dark:text-gray-400 mt-0.5">
+                        {selectedCatalog.description}
+                      </p>
+                    </div>
+                    <div className="flex items-center gap-2">
+                      <span className="text-xs text-gray-500 dark:text-gray-400">
+                        {CATALOG_MODULE_LABELS[selectedCatalog.module]}
+                      </span>
+                      {selectedCatalog.allowCustom && (
+                        <span className="inline-flex items-center px-2 py-0.5 text-xs font-medium rounded-full bg-emerald-100 dark:bg-emerald-900/30 text-emerald-700 dark:text-emerald-400">
+                          Erweiterbar
+                        </span>
+                      )}
+                    </div>
+                  </div>
+                </div>
+
+                {/* Table */}
+                <CatalogTable
+                  catalog={selectedCatalog}
+                  entries={catalogEntries}
+                  searchQuery={searchQuery}
+                  onSearchChange={setSearchQuery}
+                  onEditCustomEntry={(entry) => handleEditEntry(selectedCatalog, entry)}
+                  onDeleteCustomEntry={(entryId) => handleDeleteEntry(selectedCatalog.id, entryId)}
+                  onAddEntry={() => handleAddEntry(selectedCatalog)}
+                />
+              </div>
+            ) : (
+              /* Empty State */
+              <div className="bg-white dark:bg-gray-800 rounded-xl shadow border border-gray-200 dark:border-gray-700 p-12">
+                <div className="text-center">
+                  <Settings className="h-12 w-12 text-gray-300 dark:text-gray-600 mx-auto mb-4" />
+                  <h3 className="text-lg font-medium text-gray-900 dark:text-white mb-2">
+                    Katalog auswaehlen
+                  </h3>
+                  <p className="text-sm text-gray-500 dark:text-gray-400 max-w-sm mx-auto">
+                    Waehlen Sie einen Katalog aus der Liste links, um dessen Eintraege anzuzeigen und zu verwalten.
+                  </p>
+                </div>
+              </div>
+            )}
+          </div>
+        </div>
+      </div>
+
+      {/* Form Modal */}
+      {formState.open && formState.catalog && (
+        <CatalogEntryForm
+          catalog={formState.catalog}
+          entry={formState.entry}
+          onSave={handleSaveEntry}
+          onCancel={handleCloseForm}
+        />
+      )}
+    </div>
+  )
+}
diff --git a/admin-v2/components/catalog-manager/CatalogModuleTabs.tsx b/admin-v2/components/catalog-manager/CatalogModuleTabs.tsx
new file mode 100644
index 0000000..9b3df1d
--- /dev/null
+++ b/admin-v2/components/catalog-manager/CatalogModuleTabs.tsx
@@ -0,0 +1,121 @@
+'use client'
+
+import { useRef, useEffect } from 'react'
+import {
+  ShieldAlert,
+  FileText,
+  Building2,
+  Bot,
+  BookOpen,
+  Database,
+} from 'lucide-react'
+import type {
+  CatalogModule,
+  CatalogOverviewStats,
+} from '@/lib/sdk/catalog-manager/types'
+import { CATALOG_MODULE_LABELS } from '@/lib/sdk/catalog-manager/types'
+
+interface CatalogModuleTabsProps {
+  activeModule: CatalogModule | 'all'
+  onModuleChange: (module: CatalogModule | 'all') => void
+  stats: CatalogOverviewStats
+}
+
+const MODULE_ICON_MAP: Record<CatalogModule, React.ComponentType<{ className?: string }>> = {
+  dsfa: ShieldAlert,
+  vvt: FileText,
+  vendor: Building2,
+  ai_act: Bot,
+  reference: BookOpen,
+}
+
+interface TabDefinition {
+  key: CatalogModule | 'all'
+  label: string
+  icon: React.ComponentType<{ className?: string }>
+}
+
+export default function CatalogModuleTabs({
+  activeModule,
+  onModuleChange,
+  stats,
+}: CatalogModuleTabsProps) {
+  const scrollRef = useRef<HTMLDivElement>(null)
+  const activeTabRef = useRef<HTMLButtonElement>(null)
+
+  // Scroll active tab into view on mount and when active changes
+  useEffect(() => {
+    if (activeTabRef.current && scrollRef.current) {
+      const container = scrollRef.current
+      const tab = activeTabRef.current
+      const containerRect = container.getBoundingClientRect()
+      const tabRect = tab.getBoundingClientRect()
+
+      if (tabRect.left < containerRect.left || tabRect.right > containerRect.right) {
+        tab.scrollIntoView({ behavior: 'smooth', block: 'nearest', inline: 'center' })
+      }
+    }
+  }, [activeModule])
+
+  const tabs: TabDefinition[] = [
+    { key: 'all', label: 'Alle', icon: Database },
+    ...Object.entries(CATALOG_MODULE_LABELS).map(([key, label]) => ({
+      key: key as CatalogModule,
+      label,
+      icon: MODULE_ICON_MAP[key as CatalogModule],
+    })),
+  ]
+
+  const getCount = (key: CatalogModule | 'all'): number => {
+    if (key === 'all') {
+      return stats.totalEntries
+    }
+    return stats.byModule?.[key]?.entries ?? 0
+  }
+
+  return (
+    <div className="bg-white dark:bg-gray-800 rounded-lg shadow">
+      <div
+        ref={scrollRef}
+        className="flex overflow-x-auto scrollbar-hide border-b border-gray-200 dark:border-gray-700"
+        style={{ scrollbarWidth: 'none', msOverflowStyle: 'none' }}
+      >
+        {tabs.map(tab => {
+          const isActive = activeModule === tab.key
+          const Icon = tab.icon
+          const count = getCount(tab.key)
+
+          return (
+            <button
+              key={tab.key}
+              ref={isActive ? activeTabRef : undefined}
+              onClick={() => onModuleChange(tab.key)}
+              className={`relative flex items-center gap-2 px-4 py-3 text-sm font-medium whitespace-nowrap transition-colors shrink-0 ${
+                isActive
+                  ? 'text-violet-700 dark:text-violet-400 font-semibold'
+                  : 'text-gray-500 dark:text-gray-400 hover:text-gray-700 dark:hover:text-gray-200'
+              }`}
+            >
+              <Icon className="h-4 w-4 shrink-0" />
+              <span>{tab.label}</span>
+              <span
+                className={`inline-flex items-center justify-center min-w-[20px] h-5 px-1.5 text-xs font-medium rounded-full ${
+                  isActive
+                    ? 'bg-violet-100 dark:bg-violet-900/40 text-violet-700 dark:text-violet-300'
+                    : 'bg-gray-100 dark:bg-gray-700 text-gray-500 dark:text-gray-400'
+                }`}
+              >
+                {count}
+              </span>
+
+              {/* Active indicator line */}
+              {isActive && (
+                <span className="absolute bottom-0 left-0 right-0 h-0.5 bg-violet-600 dark:bg-violet-400 rounded-t" />
+              )}
+            </button>
+          )
+        })}
+      </div>
+    </div>
+  )
+}
diff --git a/admin-v2/components/catalog-manager/CatalogTable.tsx b/admin-v2/components/catalog-manager/CatalogTable.tsx
new file mode 100644
index 0000000..40e12a5
--- /dev/null
+++ b/admin-v2/components/catalog-manager/CatalogTable.tsx
@@ -0,0 +1,254 @@
+'use client'
+
+import { useState, useMemo } from 'react'
+import {
+  Search,
+  Plus,
+  Pencil,
+  Trash2,
+  Eye,
+  ChevronUp,
+  ChevronDown,
+  Database,
+} from 'lucide-react'
+import type { CatalogMeta, CatalogEntry } from '@/lib/sdk/catalog-manager/types'
+
+interface CatalogTableProps {
+  catalog: CatalogMeta
+  entries: CatalogEntry[]
+  searchQuery: string
+  onSearchChange: (query: string) => void
+  onEditCustomEntry: (entry: CatalogEntry) => void
+  onDeleteCustomEntry: (entryId: string) => void
+  onAddEntry: () => void
+}
+
+type SortField = 'id' | 'name' | 'category' | 'type'
+type SortDirection = 'asc' | 'desc'
+
+export default function CatalogTable({
+  catalog,
+  entries,
+  searchQuery,
+  onSearchChange,
+  onEditCustomEntry,
+  onDeleteCustomEntry,
+  onAddEntry,
+}: CatalogTableProps) {
+  const [sortField, setSortField] = useState<SortField>('name')
+  const [sortDirection, setSortDirection] = useState<SortDirection>('asc')
+
+  const handleSort = (field: SortField) => {
+    if (sortField === field) {
+      setSortDirection(prev => (prev === 'asc' ? 'desc' : 'asc'))
+    } else {
+      setSortField(field)
+      setSortDirection('asc')
+    }
+  }
+
+  const sortedEntries = useMemo(() => {
+    const sorted = [...entries].sort((a, b) => {
+      let aVal = ''
+      let bVal = ''
+
+      switch (sortField) {
+        case 'id':
+          aVal = a.id
+          bVal = b.id
+          break
+        case 'name':
+          aVal = a.displayName
+          bVal = b.displayName
+          break
+        case 'category':
+          aVal = a.category || ''
+          bVal = b.category || ''
+          break
+        case 'type':
+          aVal = a.source
+          bVal = b.source
+          break
+      }
+
+      const cmp = aVal.localeCompare(bVal, 'de')
+      return sortDirection === 'asc' ? cmp : -cmp
+    })
+
+    return sorted
+  }, [entries, sortField, sortDirection])
+
+  const SortIcon = ({ field }: { field: SortField }) => {
+    if (sortField !== field) {
+      return (
+        <span className="ml-1 inline-flex flex-col opacity-30">
+          <ChevronUp className="h-3 w-3 -mb-1" />
+          <ChevronDown className="h-3 w-3" />
+        </span>
+      )
+    }
+    return sortDirection === 'asc' ? (
+      <ChevronUp className="ml-1 h-3.5 w-3.5 inline" />
+    ) : (
+      <ChevronDown className="ml-1 h-3.5 w-3.5 inline" />
+    )
+  }
+
+  return (
+    <div>
+      {/* Search & Add Header */}
+      <div className="p-4 border-b border-gray-200 dark:border-gray-700 flex flex-col sm:flex-row items-start sm:items-center justify-between gap-3">
+        <div className="relative w-full sm:w-80">
+          <Search className="absolute left-3 top-1/2 -translate-y-1/2 h-4 w-4 text-gray-400" />
+          <input
+            type="text"
+            value={searchQuery}
+            onChange={e => onSearchChange(e.target.value)}
+            placeholder="Eintraege durchsuchen..."
+            className="w-full pl-9 pr-3 py-2 text-sm border border-gray-300 dark:border-gray-600 rounded-lg bg-white dark:bg-gray-700 text-gray-900 dark:text-gray-100 placeholder-gray-400 dark:placeholder-gray-500 focus:outline-none focus:ring-2 focus:ring-violet-500 focus:border-transparent"
+          />
+        </div>
+
+        {catalog.allowCustom && (
+          <button
+            onClick={onAddEntry}
+            className="inline-flex items-center gap-1.5 px-3 py-2 text-sm font-medium text-white bg-violet-600 hover:bg-violet-700 rounded-lg transition-colors shrink-0"
+          >
+            <Plus className="h-4 w-4" />
+            Eintrag hinzufuegen
+          </button>
+        )}
+      </div>
+
+      {/* Table */}
+      <div className="overflow-x-auto">
+        <table className="w-full text-sm">
+          <thead>
+            <tr className="border-b border-gray-200 dark:border-gray-700 bg-gray-50 dark:bg-gray-900/50">
+              <th
+                className="px-4 py-3 text-left font-medium text-gray-500 dark:text-gray-400 cursor-pointer select-none hover:text-gray-700 dark:hover:text-gray-200 whitespace-nowrap"
+                onClick={() => handleSort('name')}
+              >
+                Name
+                <SortIcon field="name" />
+              </th>
+              {catalog.categoryField && (
+                <th
+                  className="px-4 py-3 text-left font-medium text-gray-500 dark:text-gray-400 cursor-pointer select-none hover:text-gray-700 dark:hover:text-gray-200 whitespace-nowrap"
+                  onClick={() => handleSort('category')}
+                >
+                  Kategorie
+                  <SortIcon field="category" />
+                </th>
+              )}
+              <th
+                className="px-4 py-3 text-left font-medium text-gray-500 dark:text-gray-400 cursor-pointer select-none hover:text-gray-700 dark:hover:text-gray-200 whitespace-nowrap"
+                onClick={() => handleSort('type')}
+              >
+                Quelle
+                <SortIcon field="type" />
+              </th>
+              <th className="px-4 py-3 text-right font-medium text-gray-500 dark:text-gray-400 whitespace-nowrap">
+                Aktionen
+              </th>
+            </tr>
+          </thead>
+          <tbody>
+            {sortedEntries.length === 0 ? (
+              <tr>
+                <td
+                  colSpan={catalog.categoryField ? 4 : 3}
+                  className="px-4 py-12 text-center text-gray-500 dark:text-gray-400"
+                >
+                  <div className="flex flex-col items-center gap-2">
+                    <Database className="h-8 w-8 opacity-40" />
+                    <p className="text-sm">
+                      {searchQuery
+                        ? `Keine Eintraege gefunden fuer "${searchQuery}"`
+                        : 'Keine Eintraege vorhanden'}
+                    </p>
+                  </div>
+                </td>
+              </tr>
+            ) : (
+              sortedEntries.map((entry) => (
+                <tr
+                  key={`${entry.source}-${entry.id}`}
+                  className="border-b border-gray-100 dark:border-gray-700/50 hover:bg-gray-50 dark:hover:bg-gray-700/30 transition-colors"
+                >
+                  <td className="px-4 py-2.5">
+                    <div>
+                      <p className="text-gray-900 dark:text-gray-100 font-medium truncate max-w-xs">
+                        {entry.displayName}
+                      </p>
+                      {entry.displayDescription && (
+                        <p className="text-xs text-gray-500 dark:text-gray-400 truncate max-w-xs mt-0.5">
+                          {entry.displayDescription}
+                        </p>
+                      )}
+                    </div>
+                  </td>
+                  {catalog.categoryField && (
+                    <td className="px-4 py-2.5 text-gray-600 dark:text-gray-300">
+                      {entry.category || '\u2014'}
+                    </td>
+                  )}
+                  <td className="px-4 py-2.5">
+                    {entry.source === 'system' ? (
+                      <span className="inline-flex items-center px-2 py-0.5 rounded text-xs font-medium bg-gray-100 dark:bg-gray-700 text-gray-600 dark:text-gray-300">
+                        System
+                      </span>
+                    ) : (
+                      <span className="inline-flex items-center px-2 py-0.5 rounded text-xs font-medium bg-blue-100 dark:bg-blue-900/40 text-blue-700 dark:text-blue-300">
+                        Benutzerdefiniert
+                      </span>
+                    )}
+                  </td>
+                  <td className="px-4 py-2.5 text-right">
+                    <div className="flex items-center justify-end gap-1">
+                      {entry.source === 'system' ? (
+                        <button
+                          onClick={() => onEditCustomEntry(entry)}
+                          className="inline-flex items-center gap-1 px-2 py-1 text-xs text-gray-600 dark:text-gray-400 hover:text-violet-600 dark:hover:text-violet-400 hover:bg-violet-50 dark:hover:bg-violet-900/20 rounded transition-colors"
+                          title="Details anzeigen"
+                        >
+                          <Eye className="h-3.5 w-3.5" />
+                          Details
+                        </button>
+                      ) : (
+                        <>
+                          <button
+                            onClick={() => onEditCustomEntry(entry)}
+                            className="inline-flex items-center p-1.5 text-gray-500 dark:text-gray-400 hover:text-violet-600 dark:hover:text-violet-400 hover:bg-violet-50 dark:hover:bg-violet-900/20 rounded transition-colors"
+                            title="Bearbeiten"
+                          >
+                            <Pencil className="h-3.5 w-3.5" />
+                          </button>
+                          <button
+                            onClick={() => onDeleteCustomEntry(entry.id)}
+                            className="inline-flex items-center p-1.5 text-gray-500 dark:text-gray-400 hover:text-red-600 dark:hover:text-red-400 hover:bg-red-50 dark:hover:bg-red-900/20 rounded transition-colors"
+                            title="Loeschen"
+                          >
+                            <Trash2 className="h-3.5 w-3.5" />
+                          </button>
+                        </>
+                      )}
+                    </div>
+                  </td>
+                </tr>
+              ))
+            )}
+          </tbody>
+        </table>
+      </div>
+
+      {/* Footer with count */}
+      {sortedEntries.length > 0 && (
+        <div className="px-4 py-3 border-t border-gray-200 dark:border-gray-700 text-xs text-gray-500 dark:text-gray-400">
+          {sortedEntries.length} {sortedEntries.length === 1 ? 'Eintrag' : 'Eintraege'}
+          {searchQuery && ` (gefiltert)`}
+        </div>
+      )}
+    </div>
+  )
+}
diff --git a/admin-v2/components/layout/Sidebar.tsx b/admin-v2/components/layout/Sidebar.tsx
index 7611633..c8d008c 100644
--- a/admin-v2/components/layout/Sidebar.tsx
+++ b/admin-v2/components/layout/Sidebar.tsx
@@ -184,8 +184,10 @@ export function Sidebar({ onRoleChange }: SidebarProps) {
         {/* Categories */}
         <div className="px-2 space-y-1">
           {visibleCategories.map((category) => {
-            const categoryHref = `/${category.id === 'compliance' ? 'compliance' : category.id}`
-            const isCategoryActive = pathname.startsWith(categoryHref)
+            const categoryHref = category.id === 'compliance-sdk' ? '/dashboard/catalog-manager' : `/${category.id === 'compliance' ? 'compliance' : category.id}`
+            const isCategoryActive = category.id === 'compliance-sdk'
+              ? category.modules.some(m => pathname.startsWith(m.href))
+              : pathname.startsWith(categoryHref)
 
             return (
             <div key={category.id}>
diff --git a/admin-v2/lib/navigation.ts b/admin-v2/lib/navigation.ts
index de74b3f..70146ae 100644
--- a/admin-v2/lib/navigation.ts
+++ b/admin-v2/lib/navigation.ts
@@ -5,7 +5,7 @@
  * DSGVO (Datenschutz) and Compliance (Audit & GRC) are now separate
  */
 
-export type CategoryId = 'dsgvo' | 'compliance' | 'ai' | 'infrastructure' | 'education' | 'communication' | 'development' | 'sdk-docs'
+export type CategoryId = 'dsgvo' | 'compliance' | 'compliance-sdk' | 'ai' | 'infrastructure' | 'education' | 'communication' | 'development' | 'sdk-docs'
 
 export interface NavModule {
   id: string
@@ -260,6 +260,27 @@ export const navigation: NavCategory[] = [
     ],
   },
   // =========================================================================
+  // Compliance SDK - Datenschutz-Werkzeuge & Kataloge
+  // =========================================================================
+  {
+    id: 'compliance-sdk',
+    name: 'Compliance SDK',
+    icon: 'database',
+    color: '#8b5cf6', // Violet-500
+    colorClass: 'compliance-sdk',
+    description: 'SDK-Kataloge, Risiken & Massnahmen',
+    modules: [
+      {
+        id: 'catalog-manager',
+        name: 'Katalogverwaltung',
+        href: '/dashboard/catalog-manager',
+        description: 'SDK-Kataloge & Auswahltabellen',
+        purpose: 'Zentrale Verwaltung aller Dropdown- und Auswahltabellen im SDK. Systemkataloge (Risiken, Massnahmen, Vorlagen) anzeigen und benutzerdefinierte Eintraege ergaenzen, bearbeiten und loeschen.',
+        audience: ['DSB', 'Compliance Officer', 'Administratoren'],
+      },
+    ],
+  },
+  // =========================================================================
   // KI & Automatisierung
   // =========================================================================
   {
@@ -486,6 +507,15 @@ export const navigation: NavCategory[] = [
         audience: ['Lehrer', 'Entwickler'],
         oldAdminPath: '/admin/klausur-korrektur',
       },
+      {
+        id: 'companion',
+        name: 'Companion',
+        href: '/education/companion',
+        description: 'Unterrichts-Timer & Phasen',
+        purpose: 'Strukturierter Unterricht mit 5-Phasen-Modell (E-A-S-T-R). Visual Timer, Hausaufgaben-Tracking und Reflexion.',
+        audience: ['Lehrer'],
+        oldAdminPath: '/admin/companion',
+      },
     ],
   },
   // =========================================================================
diff --git a/admin-v2/lib/sdk/catalog-manager/catalog-registry.ts b/admin-v2/lib/sdk/catalog-manager/catalog-registry.ts
new file mode 100644
index 0000000..70a1702
--- /dev/null
+++ b/admin-v2/lib/sdk/catalog-manager/catalog-registry.ts
@@ -0,0 +1,665 @@
+/**
+ * SDK Catalog Manager - Central Registry
+ * 
+ * Maps all SDK catalogs to a unified interface for browsing, searching, and CRUD.
+ */
+
+import type {
+  CatalogId,
+  CatalogMeta,
+  CatalogModule,
+  CatalogEntry,
+  CatalogStats,
+  CatalogOverviewStats,
+  CustomCatalogEntry,
+  CustomCatalogs,
+} from './types'
+
+// =============================================================================
+// CATALOG DATA IMPORTS
+// =============================================================================
+
+import { RISK_CATALOG } from '../dsfa/risk-catalog'
+import { MITIGATION_LIBRARY } from '../dsfa/mitigation-library'
+import { AI_RISK_CATALOG } from '../dsfa/ai-risk-catalog'
+import { AI_MITIGATION_LIBRARY } from '../dsfa/ai-mitigation-library'
+import { PROHIBITED_AI_PRACTICES } from '../dsfa/prohibited-ai-practices'
+import { EU_BASE_FRAMEWORKS, NATIONAL_FRAMEWORKS } from '../dsfa/eu-legal-frameworks'
+import { GDPR_ENFORCEMENT_CASES } from '../dsfa/gdpr-enforcement-cases'
+import { WP248_CRITERIA, SDM_GOALS, DSFA_AUTHORITY_RESOURCES } from '../dsfa/types'
+import { VVT_BASELINE_CATALOG } from '../vvt-baseline-catalog'
+import { BASELINE_TEMPLATES } from '../loeschfristen-baseline-catalog'
+import { VENDOR_TEMPLATES, COUNTRY_RISK_PROFILES } from '../vendor-compliance/catalog/vendor-templates'
+import { LEGAL_BASIS_INFO, STANDARD_RETENTION_PERIODS } from '../vendor-compliance/catalog/legal-basis'
+
+// =============================================================================
+// HELPER: Resolve localized text fields
+// =============================================================================
+
+function resolveField(value: unknown): string {
+  if (value === null || value === undefined) return ''
+  if (typeof value === 'string') return value
+  if (typeof value === 'number') return String(value)
+  if (typeof value === 'object' && 'de' in (value as Record<string, unknown>)) {
+    return String((value as Record<string, string>).de || '')
+  }
+  return String(value)
+}
+
+// =============================================================================
+// SDM_GOALS as entries array (it's a Record, not an array)
+// =============================================================================
+
+const SDM_GOALS_ENTRIES = Object.entries(SDM_GOALS).map(([key, val]) => ({
+  id: key,
+  name: val.name,
+  description: val.description,
+  article: val.article,
+}))
+
+// =============================================================================
+// CATALOG REGISTRY
+// =============================================================================
+
+export const CATALOG_REGISTRY: Record<CatalogId, CatalogMeta> = {
+  'dsfa-risks': {
+    id: 'dsfa-risks',
+    name: 'DSFA Risikokatalog',
+    description: 'Standardrisiken fuer Datenschutz-Folgenabschaetzungen',
+    module: 'dsfa',
+    icon: 'ShieldAlert',
+    systemCount: RISK_CATALOG.length,
+    allowCustom: true,
+    idField: 'id',
+    nameField: 'title',
+    descriptionField: 'description',
+    categoryField: 'category',
+    fields: [
+      { key: 'id', label: 'Risiko-ID', type: 'text', required: true, placeholder: 'R-XXX-01' },
+      { key: 'title', label: 'Titel', type: 'text', required: true },
+      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
+      { key: 'category', label: 'Kategorie', type: 'select', required: true, options: [
+        { value: 'confidentiality', label: 'Vertraulichkeit' },
+        { value: 'integrity', label: 'Integritaet' },
+        { value: 'availability', label: 'Verfuegbarkeit' },
+        { value: 'rights_freedoms', label: 'Rechte & Freiheiten' },
+      ]},
+      { key: 'typicalLikelihood', label: 'Typische Eintrittswahrscheinlichkeit', type: 'select', required: false, options: [
+        { value: 'low', label: 'Niedrig' },
+        { value: 'medium', label: 'Mittel' },
+        { value: 'high', label: 'Hoch' },
+      ]},
+      { key: 'typicalImpact', label: 'Typische Auswirkung', type: 'select', required: false, options: [
+        { value: 'low', label: 'Niedrig' },
+        { value: 'medium', label: 'Mittel' },
+        { value: 'high', label: 'Hoch' },
+      ]},
+    ],
+    searchableFields: ['id', 'title', 'description', 'category'],
+  },
+
+  'dsfa-mitigations': {
+    id: 'dsfa-mitigations',
+    name: 'DSFA Massnahmenbibliothek',
+    description: 'Technische und organisatorische Massnahmen fuer DSFAs',
+    module: 'dsfa',
+    icon: 'Shield',
+    systemCount: MITIGATION_LIBRARY.length,
+    allowCustom: true,
+    idField: 'id',
+    nameField: 'title',
+    descriptionField: 'description',
+    categoryField: 'type',
+    fields: [
+      { key: 'id', label: 'Massnahmen-ID', type: 'text', required: true, placeholder: 'M-XXX-01' },
+      { key: 'title', label: 'Titel', type: 'text', required: true },
+      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
+      { key: 'type', label: 'Typ', type: 'select', required: true, options: [
+        { value: 'technical', label: 'Technisch' },
+        { value: 'organizational', label: 'Organisatorisch' },
+        { value: 'legal', label: 'Rechtlich' },
+      ]},
+      { key: 'effectiveness', label: 'Wirksamkeit', type: 'select', required: false, options: [
+        { value: 'low', label: 'Niedrig' },
+        { value: 'medium', label: 'Mittel' },
+        { value: 'high', label: 'Hoch' },
+      ]},
+      { key: 'legalBasis', label: 'Rechtsgrundlage', type: 'text', required: false },
+    ],
+    searchableFields: ['id', 'title', 'description', 'type', 'legalBasis'],
+  },
+
+  'ai-risks': {
+    id: 'ai-risks',
+    name: 'KI-Risikokatalog',
+    description: 'Spezifische Risiken fuer KI-Systeme',
+    module: 'ai_act',
+    icon: 'Bot',
+    systemCount: AI_RISK_CATALOG.length,
+    allowCustom: true,
+    idField: 'id',
+    nameField: 'title',
+    descriptionField: 'description',
+    categoryField: 'category',
+    fields: [
+      { key: 'id', label: 'Risiko-ID', type: 'text', required: true, placeholder: 'R-AI-XXX-01' },
+      { key: 'title', label: 'Titel', type: 'text', required: true },
+      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
+      { key: 'category', label: 'Kategorie', type: 'select', required: true, options: [
+        { value: 'confidentiality', label: 'Vertraulichkeit' },
+        { value: 'integrity', label: 'Integritaet' },
+        { value: 'availability', label: 'Verfuegbarkeit' },
+        { value: 'rights_freedoms', label: 'Rechte & Freiheiten' },
+      ]},
+      { key: 'typicalLikelihood', label: 'Eintrittswahrscheinlichkeit', type: 'select', required: false, options: [
+        { value: 'low', label: 'Niedrig' },
+        { value: 'medium', label: 'Mittel' },
+        { value: 'high', label: 'Hoch' },
+      ]},
+      { key: 'typicalImpact', label: 'Auswirkung', type: 'select', required: false, options: [
+        { value: 'low', label: 'Niedrig' },
+        { value: 'medium', label: 'Mittel' },
+        { value: 'high', label: 'Hoch' },
+      ]},
+    ],
+    searchableFields: ['id', 'title', 'description', 'category'],
+  },
+
+  'ai-mitigations': {
+    id: 'ai-mitigations',
+    name: 'KI-Massnahmenbibliothek',
+    description: 'Massnahmen fuer KI-spezifische Risiken',
+    module: 'ai_act',
+    icon: 'ShieldCheck',
+    systemCount: AI_MITIGATION_LIBRARY.length,
+    allowCustom: true,
+    idField: 'id',
+    nameField: 'title',
+    descriptionField: 'description',
+    categoryField: 'type',
+    fields: [
+      { key: 'id', label: 'Massnahmen-ID', type: 'text', required: true },
+      { key: 'title', label: 'Titel', type: 'text', required: true },
+      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
+      { key: 'type', label: 'Typ', type: 'select', required: true, options: [
+        { value: 'technical', label: 'Technisch' },
+        { value: 'organizational', label: 'Organisatorisch' },
+        { value: 'legal', label: 'Rechtlich' },
+      ]},
+      { key: 'effectiveness', label: 'Wirksamkeit', type: 'select', required: false, options: [
+        { value: 'low', label: 'Niedrig' },
+        { value: 'medium', label: 'Mittel' },
+        { value: 'high', label: 'Hoch' },
+      ]},
+    ],
+    searchableFields: ['id', 'title', 'description', 'type'],
+  },
+
+  'prohibited-ai-practices': {
+    id: 'prohibited-ai-practices',
+    name: 'Verbotene KI-Praktiken',
+    description: 'Absolut und bedingt verbotene KI-Anwendungen nach AI Act',
+    module: 'ai_act',
+    icon: 'Ban',
+    systemCount: PROHIBITED_AI_PRACTICES.length,
+    allowCustom: false,
+    idField: 'id',
+    nameField: 'title',
+    descriptionField: 'description',
+    categoryField: 'severity',
+    fields: [
+      { key: 'id', label: 'ID', type: 'text', required: true },
+      { key: 'title', label: 'Titel', type: 'text', required: true },
+      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
+      { key: 'severity', label: 'Schwere', type: 'select', required: true, options: [
+        { value: 'absolute', label: 'Absolutes Verbot' },
+        { value: 'conditional', label: 'Bedingtes Verbot' },
+      ]},
+      { key: 'legalBasis', label: 'Rechtsgrundlage', type: 'text', required: false },
+    ],
+    searchableFields: ['id', 'title', 'description', 'severity', 'legalBasis'],
+  },
+
+  'vvt-templates': {
+    id: 'vvt-templates',
+    name: 'VVT Baseline-Vorlagen',
+    description: 'Vorlagen fuer Verarbeitungstaetigkeiten',
+    module: 'vvt',
+    icon: 'FileText',
+    systemCount: VVT_BASELINE_CATALOG.length,
+    allowCustom: true,
+    idField: 'templateId',
+    nameField: 'name',
+    descriptionField: 'description',
+    categoryField: 'businessFunction',
+    fields: [
+      { key: 'templateId', label: 'Vorlagen-ID', type: 'text', required: true },
+      { key: 'name', label: 'Name', type: 'text', required: true },
+      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
+      { key: 'businessFunction', label: 'Geschaeftsbereich', type: 'select', required: true, options: [
+        { value: 'hr', label: 'Personal' },
+        { value: 'finance', label: 'Finanzen' },
+        { value: 'sales', label: 'Vertrieb' },
+        { value: 'marketing', label: 'Marketing' },
+        { value: 'support', label: 'Support' },
+        { value: 'it', label: 'IT' },
+        { value: 'other', label: 'Sonstige' },
+      ]},
+      { key: 'protectionLevel', label: 'Schutzniveau', type: 'select', required: false, options: [
+        { value: 'LOW', label: 'Niedrig' },
+        { value: 'MEDIUM', label: 'Mittel' },
+        { value: 'HIGH', label: 'Hoch' },
+      ]},
+    ],
+    searchableFields: ['templateId', 'name', 'description', 'businessFunction'],
+  },
+
+  'loeschfristen-templates': {
+    id: 'loeschfristen-templates',
+    name: 'Loeschfristen-Vorlagen',
+    description: 'Baseline-Vorlagen fuer Aufbewahrungsfristen',
+    module: 'vvt',
+    icon: 'Clock',
+    systemCount: BASELINE_TEMPLATES.length,
+    allowCustom: true,
+    idField: 'templateId',
+    nameField: 'dataObjectName',
+    descriptionField: 'description',
+    categoryField: 'retentionDriver',
+    fields: [
+      { key: 'templateId', label: 'Vorlagen-ID', type: 'text', required: true },
+      { key: 'dataObjectName', label: 'Datenobjekt', type: 'text', required: true },
+      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
+      { key: 'retentionDuration', label: 'Aufbewahrungsdauer', type: 'number', required: true, min: 0 },
+      { key: 'retentionUnit', label: 'Einheit', type: 'select', required: true, options: [
+        { value: 'days', label: 'Tage' },
+        { value: 'months', label: 'Monate' },
+        { value: 'years', label: 'Jahre' },
+      ]},
+      { key: 'deletionMethod', label: 'Loeschmethode', type: 'text', required: false },
+      { key: 'responsibleRole', label: 'Verantwortlich', type: 'text', required: false },
+    ],
+    searchableFields: ['templateId', 'dataObjectName', 'description', 'retentionDriver'],
+  },
+
+  'vendor-templates': {
+    id: 'vendor-templates',
+    name: 'AV-Vorlagen',
+    description: 'Vorlagen fuer Auftragsverarbeitungsvertraege',
+    module: 'vendor',
+    icon: 'Building2',
+    systemCount: VENDOR_TEMPLATES.length,
+    allowCustom: true,
+    idField: 'id',
+    nameField: 'name',
+    descriptionField: 'description',
+    categoryField: 'serviceCategory',
+    fields: [
+      { key: 'id', label: 'ID', type: 'text', required: true },
+      { key: 'name', label: 'Name', type: 'text', required: true },
+      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
+      { key: 'serviceCategory', label: 'Kategorie', type: 'text', required: true },
+    ],
+    searchableFields: ['id', 'name', 'description', 'serviceCategory'],
+  },
+
+  'country-risk-profiles': {
+    id: 'country-risk-profiles',
+    name: 'Laenderrisikoprofile',
+    description: 'Datenschutz-Risikobewertung nach Laendern',
+    module: 'vendor',
+    icon: 'Globe',
+    systemCount: COUNTRY_RISK_PROFILES.length,
+    allowCustom: false,
+    idField: 'code',
+    nameField: 'name',
+    categoryField: 'riskLevel',
+    fields: [
+      { key: 'code', label: 'Laendercode', type: 'text', required: true },
+      { key: 'name', label: 'Land', type: 'text', required: true },
+      { key: 'riskLevel', label: 'Risikostufe', type: 'select', required: true, options: [
+        { value: 'LOW', label: 'Niedrig' },
+        { value: 'MEDIUM', label: 'Mittel' },
+        { value: 'HIGH', label: 'Hoch' },
+        { value: 'VERY_HIGH', label: 'Sehr hoch' },
+      ]},
+      { key: 'isEU', label: 'EU-Mitglied', type: 'boolean', required: false },
+      { key: 'isEEA', label: 'EWR-Mitglied', type: 'boolean', required: false },
+      { key: 'hasAdequacyDecision', label: 'Angemessenheitsbeschluss', type: 'boolean', required: false },
+    ],
+    searchableFields: ['code', 'name', 'riskLevel'],
+  },
+
+  'legal-bases': {
+    id: 'legal-bases',
+    name: 'Rechtsgrundlagen',
+    description: 'DSGVO Art. 6 und Art. 9 Rechtsgrundlagen',
+    module: 'reference',
+    icon: 'Scale',
+    systemCount: LEGAL_BASIS_INFO.length,
+    allowCustom: false,
+    idField: 'type',
+    nameField: 'name',
+    descriptionField: 'description',
+    categoryField: 'article',
+    fields: [
+      { key: 'type', label: 'Typ', type: 'text', required: true },
+      { key: 'article', label: 'Artikel', type: 'text', required: true },
+      { key: 'name', label: 'Name', type: 'text', required: true },
+      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
+      { key: 'isSpecialCategory', label: 'Besondere Kategorie (Art. 9)', type: 'boolean', required: false },
+    ],
+    searchableFields: ['type', 'article', 'name', 'description'],
+  },
+
+  'retention-periods': {
+    id: 'retention-periods',
+    name: 'Aufbewahrungsfristen',
+    description: 'Gesetzliche Standard-Aufbewahrungsfristen',
+    module: 'reference',
+    icon: 'Timer',
+    systemCount: STANDARD_RETENTION_PERIODS.length,
+    allowCustom: false,
+    idField: 'id',
+    nameField: 'name',
+    descriptionField: 'description',
+    fields: [
+      { key: 'id', label: 'ID', type: 'text', required: true },
+      { key: 'name', label: 'Name', type: 'text', required: true },
+      { key: 'legalBasis', label: 'Rechtsgrundlage', type: 'text', required: true },
+      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
+    ],
+    searchableFields: ['id', 'name', 'legalBasis', 'description'],
+  },
+
+  'eu-legal-frameworks': {
+    id: 'eu-legal-frameworks',
+    name: 'EU-Rechtsrahmen',
+    description: 'EU-weite Datenschutzgesetze und -verordnungen',
+    module: 'reference',
+    icon: 'Landmark',
+    systemCount: EU_BASE_FRAMEWORKS.length,
+    allowCustom: false,
+    idField: 'id',
+    nameField: 'name',
+    descriptionField: 'description',
+    categoryField: 'type',
+    fields: [
+      { key: 'id', label: 'ID', type: 'text', required: true },
+      { key: 'name', label: 'Name', type: 'text', required: true },
+      { key: 'fullName', label: 'Vollstaendiger Name', type: 'text', required: true },
+      { key: 'type', label: 'Typ', type: 'text', required: true },
+      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
+    ],
+    searchableFields: ['id', 'name', 'fullName', 'description', 'type'],
+  },
+
+  'national-legal-frameworks': {
+    id: 'national-legal-frameworks',
+    name: 'Nationale Rechtsrahmen',
+    description: 'Nationale Datenschutzgesetze der EU/EWR-Staaten',
+    module: 'reference',
+    icon: 'Flag',
+    systemCount: NATIONAL_FRAMEWORKS.length,
+    allowCustom: false,
+    idField: 'id',
+    nameField: 'name',
+    descriptionField: 'description',
+    categoryField: 'countryCode',
+    fields: [
+      { key: 'id', label: 'ID', type: 'text', required: true },
+      { key: 'name', label: 'Name', type: 'text', required: true },
+      { key: 'countryCode', label: 'Land', type: 'text', required: true },
+      { key: 'type', label: 'Typ', type: 'text', required: true },
+      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
+    ],
+    searchableFields: ['id', 'name', 'countryCode', 'description', 'type'],
+  },
+
+  'gdpr-enforcement-cases': {
+    id: 'gdpr-enforcement-cases',
+    name: 'DSGVO-Bussgeldentscheidungen',
+    description: 'Relevante Bussgeldentscheidungen als Referenz',
+    module: 'reference',
+    icon: 'Gavel',
+    systemCount: GDPR_ENFORCEMENT_CASES.length,
+    allowCustom: false,
+    idField: 'id',
+    nameField: 'company',
+    descriptionField: 'description',
+    categoryField: 'country',
+    fields: [
+      { key: 'id', label: 'ID', type: 'text', required: true },
+      { key: 'company', label: 'Unternehmen', type: 'text', required: true },
+      { key: 'country', label: 'Land', type: 'text', required: true },
+      { key: 'year', label: 'Jahr', type: 'number', required: true },
+      { key: 'fineOriginal', label: 'Bussgeld (EUR)', type: 'number', required: true },
+      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
+    ],
+    searchableFields: ['id', 'company', 'country', 'description'],
+  },
+
+  'wp248-criteria': {
+    id: 'wp248-criteria',
+    name: 'WP248 Kriterien',
+    description: 'Kriterien zur DSFA-Pflichtpruefung nach WP248',
+    module: 'dsfa',
+    icon: 'ClipboardCheck',
+    systemCount: WP248_CRITERIA.length,
+    allowCustom: false,
+    idField: 'code',
+    nameField: 'title',
+    descriptionField: 'description',
+    fields: [
+      { key: 'code', label: 'Code', type: 'text', required: true },
+      { key: 'title', label: 'Titel', type: 'text', required: true },
+      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
+      { key: 'gdprRef', label: 'DSGVO-Referenz', type: 'text', required: false },
+    ],
+    searchableFields: ['code', 'title', 'description', 'gdprRef'],
+  },
+
+  'sdm-goals': {
+    id: 'sdm-goals',
+    name: 'SDM Gewaehrleistungsziele',
+    description: 'Standard-Datenschutzmodell Gewaehrleistungsziele',
+    module: 'dsfa',
+    icon: 'Target',
+    systemCount: SDM_GOALS_ENTRIES.length,
+    allowCustom: false,
+    idField: 'id',
+    nameField: 'name',
+    descriptionField: 'description',
+    fields: [
+      { key: 'id', label: 'ID', type: 'text', required: true },
+      { key: 'name', label: 'Name', type: 'text', required: true },
+      { key: 'description', label: 'Beschreibung', type: 'textarea', required: true },
+      { key: 'article', label: 'DSGVO-Artikel', type: 'text', required: false },
+    ],
+    searchableFields: ['id', 'name', 'description', 'article'],
+  },
+
+  'dsfa-authority-resources': {
+    id: 'dsfa-authority-resources',
+    name: 'Aufsichtsbehoerden-Ressourcen',
+    description: 'DSFA-Ressourcen der deutschen Aufsichtsbehoerden',
+    module: 'dsfa',
+    icon: 'Building',
+    systemCount: DSFA_AUTHORITY_RESOURCES.length,
+    allowCustom: false,
+    idField: 'id',
+    nameField: 'shortName',
+    descriptionField: 'name',
+    categoryField: 'state',
+    fields: [
+      { key: 'id', label: 'ID', type: 'text', required: true },
+      { key: 'shortName', label: 'Kurzname', type: 'text', required: true },
+      { key: 'name', label: 'Voller Name', type: 'text', required: true },
+      { key: 'state', label: 'Bundesland', type: 'text', required: true },
+    ],
+    searchableFields: ['id', 'shortName', 'name', 'state'],
+  },
+}
+
+// =============================================================================
+// SYSTEM ENTRIES MAP
+// =============================================================================
+
+const SYSTEM_ENTRIES_MAP: Record<CatalogId, Record<string, unknown>[]> = {
+  'dsfa-risks': RISK_CATALOG as unknown as Record<string, unknown>[],
+  'dsfa-mitigations': MITIGATION_LIBRARY as unknown as Record<string, unknown>[],
+  'ai-risks': AI_RISK_CATALOG as unknown as Record<string, unknown>[],
+  'ai-mitigations': AI_MITIGATION_LIBRARY as unknown as Record<string, unknown>[],
+  'prohibited-ai-practices': PROHIBITED_AI_PRACTICES as unknown as Record<string, unknown>[],
+  'vvt-templates': VVT_BASELINE_CATALOG as unknown as Record<string, unknown>[],
+  'loeschfristen-templates': BASELINE_TEMPLATES as unknown as Record<string, unknown>[],
+  'vendor-templates': VENDOR_TEMPLATES as unknown as Record<string, unknown>[],
+  'country-risk-profiles': COUNTRY_RISK_PROFILES as unknown as Record<string, unknown>[],
+  'legal-bases': LEGAL_BASIS_INFO as unknown as Record<string, unknown>[],
+  'retention-periods': STANDARD_RETENTION_PERIODS as unknown as Record<string, unknown>[],
+  'eu-legal-frameworks': EU_BASE_FRAMEWORKS as unknown as Record<string, unknown>[],
+  'national-legal-frameworks': NATIONAL_FRAMEWORKS as unknown as Record<string, unknown>[],
+  'gdpr-enforcement-cases': GDPR_ENFORCEMENT_CASES as unknown as Record<string, unknown>[],
+  'wp248-criteria': WP248_CRITERIA as unknown as Record<string, unknown>[],
+  'sdm-goals': SDM_GOALS_ENTRIES as unknown as Record<string, unknown>[],
+  'dsfa-authority-resources': DSFA_AUTHORITY_RESOURCES as unknown as Record<string, unknown>[],
+}
+
+// =============================================================================
+// ENTRY CONVERTERS
+// =============================================================================
+
+function systemEntryToCatalogEntry(
+  catalogId: CatalogId,
+  data: Record<string, unknown>,
+): CatalogEntry {
+  const meta = CATALOG_REGISTRY[catalogId]
+  const idValue = resolveField(data[meta.idField])
+  const nameValue = resolveField(data[meta.nameField])
+  const descValue = meta.descriptionField ? resolveField(data[meta.descriptionField]) : undefined
+  const catValue = meta.categoryField ? resolveField(data[meta.categoryField]) : undefined
+
+  return {
+    id: idValue || crypto.randomUUID(),
+    catalogId,
+    source: 'system',
+    data,
+    displayName: nameValue || idValue || '(Unbenannt)',
+    displayDescription: descValue,
+    category: catValue,
+  }
+}
+
+function customEntryToCatalogEntry(
+  catalogId: CatalogId,
+  entry: CustomCatalogEntry,
+): CatalogEntry {
+  const meta = CATALOG_REGISTRY[catalogId]
+  const nameValue = resolveField(entry.data[meta.nameField])
+  const descValue = meta.descriptionField ? resolveField(entry.data[meta.descriptionField]) : undefined
+  const catValue = meta.categoryField ? resolveField(entry.data[meta.categoryField]) : undefined
+
+  return {
+    id: entry.id,
+    catalogId,
+    source: 'custom',
+    data: entry.data,
+    displayName: nameValue || '(Unbenannt)',
+    displayDescription: descValue,
+    category: catValue,
+  }
+}
+
+// =============================================================================
+// PUBLIC API
+// =============================================================================
+
+export function getSystemEntries(catalogId: CatalogId): CatalogEntry[] {
+  const raw = SYSTEM_ENTRIES_MAP[catalogId] || []
+  return raw.map(data => systemEntryToCatalogEntry(catalogId, data))
+}
+
+export function getAllEntries(
+  catalogId: CatalogId,
+  customEntries: CustomCatalogEntry[] = [],
+): CatalogEntry[] {
+  const system = getSystemEntries(catalogId)
+  const custom = customEntries.map(e => customEntryToCatalogEntry(catalogId, e))
+  return [...system, ...custom]
+}
+
+export function getCatalogsByModule(module: CatalogModule): CatalogMeta[] {
+  return Object.values(CATALOG_REGISTRY).filter(c => c.module === module)
+}
+
+export function getCatalogStats(
+  catalogId: CatalogId,
+  customEntries: CustomCatalogEntry[] = [],
+): CatalogStats {
+  const meta = CATALOG_REGISTRY[catalogId]
+  return {
+    catalogId,
+    systemCount: meta.systemCount,
+    customCount: customEntries.length,
+    totalCount: meta.systemCount + customEntries.length,
+  }
+}
+
+export function getOverviewStats(customCatalogs: CustomCatalogs): CatalogOverviewStats {
+  const modules: CatalogModule[] = ['dsfa', 'vvt', 'vendor', 'ai_act', 'reference']
+  const byModule = {} as Record<CatalogModule, { catalogs: number; entries: number }>
+
+  let totalSystemEntries = 0
+  let totalCustomEntries = 0
+
+  for (const mod of modules) {
+    const cats = getCatalogsByModule(mod)
+    let entries = 0
+    for (const cat of cats) {
+      const customCount = customCatalogs[cat.id]?.length ?? 0
+      entries += cat.systemCount + customCount
+      totalSystemEntries += cat.systemCount
+      totalCustomEntries += customCount
+    }
+    byModule[mod] = { catalogs: cats.length, entries }
+  }
+
+  return {
+    totalCatalogs: Object.keys(CATALOG_REGISTRY).length,
+    totalSystemEntries,
+    totalCustomEntries,
+    totalEntries: totalSystemEntries + totalCustomEntries,
+    byModule,
+  }
+}
+
+export function searchCatalog(
+  catalogId: CatalogId,
+  query: string,
+  customEntries: CustomCatalogEntry[] = [],
+): CatalogEntry[] {
+  const allEntries = getAllEntries(catalogId, customEntries)
+  const meta = CATALOG_REGISTRY[catalogId]
+  const q = query.toLowerCase().trim()
+
+  if (!q) return allEntries
+
+  return allEntries
+    .map(entry => {
+      let score = 0
+      for (const field of meta.searchableFields) {
+        const value = resolveField(entry.data[field]).toLowerCase()
+        if (value.includes(q)) {
+          score += value.startsWith(q) ? 10 : 5
+        }
+      }
+      // Also search display name
+      if (entry.displayName.toLowerCase().includes(q)) {
+        score += 15
+      }
+      return { entry, score }
+    })
+    .filter(r => r.score > 0)
+    .sort((a, b) => b.score - a.score)
+    .map(r => r.entry)
+}
diff --git a/admin-v2/lib/sdk/catalog-manager/types.ts b/admin-v2/lib/sdk/catalog-manager/types.ts
new file mode 100644
index 0000000..540f2d0
--- /dev/null
+++ b/admin-v2/lib/sdk/catalog-manager/types.ts
@@ -0,0 +1,118 @@
+/**
+ * SDK Catalog Manager - Type Definitions
+ */
+
+// All catalog IDs in the system
+export type CatalogId =
+  | 'dsfa-risks'
+  | 'dsfa-mitigations'
+  | 'ai-risks'
+  | 'ai-mitigations'
+  | 'prohibited-ai-practices'
+  | 'vvt-templates'
+  | 'loeschfristen-templates'
+  | 'vendor-templates'
+  | 'country-risk-profiles'
+  | 'legal-bases'
+  | 'retention-periods'
+  | 'eu-legal-frameworks'
+  | 'national-legal-frameworks'
+  | 'gdpr-enforcement-cases'
+  | 'wp248-criteria'
+  | 'sdm-goals'
+  | 'dsfa-authority-resources'
+
+// Module grouping
+export type CatalogModule = 'dsfa' | 'vvt' | 'vendor' | 'ai_act' | 'reference'
+
+// Field types for dynamic forms
+export type CatalogFieldType = 'text' | 'textarea' | 'number' | 'select' | 'multiselect' | 'boolean' | 'tags'
+
+export interface CatalogFieldSchema {
+  key: string
+  label: string
+  type: CatalogFieldType
+  required: boolean
+  placeholder?: string
+  description?: string
+  options?: { value: string; label: string }[]
+  helpText?: string
+  min?: number
+  max?: number
+  step?: number
+}
+
+export interface CatalogMeta {
+  id: CatalogId
+  name: string
+  description: string
+  module: CatalogModule
+  icon: string // lucide icon name
+  systemCount: number
+  allowCustom: boolean
+  idField: string // which field is the unique ID (e.g. 'id', 'templateId', 'code')
+  nameField: string // which field is the display name (e.g. 'title', 'name', 'dataObjectName')
+  descriptionField?: string // which field holds description
+  categoryField?: string // optional grouping field
+  fields: CatalogFieldSchema[]
+  searchableFields: string[]
+}
+
+// A custom catalog entry added by the user
+export interface CustomCatalogEntry {
+  id: string // Generated UUID
+  catalogId: CatalogId
+  data: Record<string, unknown>
+  createdAt: string // ISO date
+  updatedAt: string // ISO date
+  createdBy?: string
+}
+
+// All custom entries, keyed by CatalogId
+export type CustomCatalogs = Partial<Record<CatalogId, CustomCatalogEntry[]>>
+
+// Combined view entry (system or custom)
+export interface CatalogEntry {
+  id: string
+  catalogId: CatalogId
+  source: 'system' | 'custom'
+  data: Record<string, unknown>
+  displayName: string
+  displayDescription?: string
+  category?: string
+}
+
+// Stats for a single catalog
+export interface CatalogStats {
+  catalogId: CatalogId
+  systemCount: number
+  customCount: number
+  totalCount: number
+}
+
+// Stats for all catalogs
+export interface CatalogOverviewStats {
+  totalCatalogs: number
+  totalSystemEntries: number
+  totalCustomEntries: number
+  totalEntries: number
+  byModule: Record<CatalogModule, { catalogs: number; entries: number }>
+}
+
+// Module labels
+export const CATALOG_MODULE_LABELS: Record<CatalogModule, string> = {
+  dsfa: 'DSFA & Risiken',
+  vvt: 'VVT & Loeschfristen',
+  vendor: 'Auftragsverarbeitung',
+  ai_act: 'AI Act',
+  reference: 'Referenzdaten',
+}
+
+// Module icons (lucide names)
+export const CATALOG_MODULE_ICONS: Record<CatalogModule, string> = {
+  dsfa: 'ShieldAlert',
+  vvt: 'FileText',
+  vendor: 'Building2',
+  ai_act: 'Bot',
+  reference: 'BookOpen',
+}