feat: Add module visibility management

- ModulesView: new 'Sichtbarkeit' tab with role matrix
- Chef can toggle visibility per module per role
- Sidebar filters modules based on user role visibility
- Quick actions for bulk enable/disable

src/views/ModulesView.vue

@@ -1,7 +1,10 @@
 <script setup lang="ts">
 import { ref, onMounted } from 'vue'
+import { useI18n } from 'vue-i18n'
 import { api } from '@/api'
 
+const { t } = useI18n()
+
 interface Module {
   id: string
   name: string
@@ -12,12 +15,34 @@ interface Module {
   config: Record<string, unknown>
 }
 
+interface ModuleVisibility {
+  module_key: string
+  role_disponent: boolean
+  role_mitarbeiter: boolean
+  role_subunternehmer: boolean
+}
+
 const modules = ref<Module[]>([])
 const loading = ref(true)
 const systemStatus = ref<any>(null)
+const visibility = ref<ModuleVisibility[]>([])
+const savingVisibility = ref(false)
+const activeTab = ref<'modules' | 'visibility'>('modules')
+
+const moduleList = [
+  { key: 'qualifications', name: '🎓 Qualifikationen', icon: '🎓' },
+  { key: 'shifts', name: '📅 Schichtplanung', icon: '📅' },
+  { key: 'patrols', name: '📍 Rundgänge', icon: '📍' },
+  { key: 'incidents', name: '🚨 Vorfälle', icon: '🚨' },
+  { key: 'documents', name: '📁 Dokumente', icon: '📁' },
+  { key: 'vehicles', name: '🚗 Fahrzeuge', icon: '🚗' },
+  { key: 'customers', name: '🤝 Kunden', icon: '🤝' },
+  { key: 'billing', name: '💰 Abrechnung', icon: '💰' },
+  { key: 'partnerships', name: '🔗 Partnerschaften', icon: '🔗' },
+]
 
 onMounted(async () => {
-  await Promise.all([loadModules(), loadSystemStatus()])
+  await Promise.all([loadModules(), loadSystemStatus(), loadVisibility()])
 })
 
 async function loadModules() {
@@ -37,11 +62,31 @@ async function loadSystemStatus() {
     const res = await api.get<any>('/modules/developer/status')
     systemStatus.value = res.data
   } catch (e) {
-    // Developer module might not be enabled
     console.log('Dev status not available')
   }
 }
 
+async function loadVisibility() {
+  try {
+    const res = await api.get<{ visibility: ModuleVisibility[] }>('/modules/visibility')
+    visibility.value = res.data.visibility
+    
+    // Ensure all modules have visibility entries
+    for (const mod of moduleList) {
+      if (!visibility.value.find(v => v.module_key === mod.key)) {
+        visibility.value.push({
+          module_key: mod.key,
+          role_disponent: true,
+          role_mitarbeiter: true,
+          role_subunternehmer: false
+        })
+      }
+    }
+  } catch (e) {
+    console.error(e)
+  }
+}
+
 async function toggleModule(mod: Module) {
   if (mod.is_core) return
   
@@ -49,43 +94,95 @@ async function toggleModule(mod: Module) {
     await api.post(`/modules/${mod.id}/toggle`, { enabled: !mod.enabled })
     mod.enabled = !mod.enabled
   } catch (e) {
-    alert(e instanceof Error ? e.message : 'Fehler')
+    alert(e instanceof Error ? e.message : t('messages.error'))
+  }
+}
+
+function getVisibility(moduleKey: string): ModuleVisibility {
+  return visibility.value.find(v => v.module_key === moduleKey) || {
+    module_key: moduleKey,
+    role_disponent: true,
+    role_mitarbeiter: true,
+    role_subunternehmer: false
+  }
+}
+
+function toggleVisibility(moduleKey: string, role: 'role_disponent' | 'role_mitarbeiter' | 'role_subunternehmer') {
+  const vis = visibility.value.find(v => v.module_key === moduleKey)
+  if (vis) {
+    vis[role] = !vis[role]
+  }
+}
+
+async function saveVisibility() {
+  savingVisibility.value = true
+  try {
+    await api.put('/modules/visibility', { settings: visibility.value })
+    alert(t('messages.saved'))
+  } catch (e) {
+    alert(e instanceof Error ? e.message : t('messages.error'))
+  } finally {
+    savingVisibility.value = false
+  }
+}
+
+function setAllForRole(role: 'role_disponent' | 'role_mitarbeiter' | 'role_subunternehmer', value: boolean) {
+  for (const vis of visibility.value) {
+    vis[role] = value
   }
 }
 </script>
 
 <template>
   <div class="space-y-6">
-    <h1 class="text-2xl font-bold text-gray-900 dark:text-white">⚙️ Module</h1>
+    <h1 class="text-2xl font-bold text-gray-900 dark:text-white">⚙️ {{ t('modules.title') }}</h1>
 
     <!-- System Status -->
     <div v-if="systemStatus" class="card bg-gradient-to-r from-primary-500 to-primary-700 text-white">
       <h2 class="text-lg font-semibold mb-4">System Status</h2>
       <div class="grid grid-cols-2 md:grid-cols-4 gap-4">
         <div>
-          <p class="text-primary-100 text-sm">Benutzer</p>
+          <p class="text-primary-100 text-sm">{{ t('users.employees') }}</p>
           <p class="text-2xl font-bold">{{ systemStatus.stats?.user_count || 0 }}</p>
         </div>
         <div>
-          <p class="text-primary-100 text-sm">Aufträge</p>
+          <p class="text-primary-100 text-sm">{{ t('orders.title') }}</p>
           <p class="text-2xl font-bold">{{ systemStatus.stats?.order_count || 0 }}</p>
         </div>
         <div>
-          <p class="text-primary-100 text-sm">Stundenzettel</p>
+          <p class="text-primary-100 text-sm">{{ t('timesheets.title') }}</p>
           <p class="text-2xl font-bold">{{ systemStatus.stats?.timesheet_count || 0 }}</p>
         </div>
         <div>
-          <p class="text-primary-100 text-sm">Aktive Module</p>
+          <p class="text-primary-100 text-sm">{{ t('modules.enabled') }}</p>
           <p class="text-2xl font-bold">{{ systemStatus.stats?.enabled_modules || 0 }}</p>
         </div>
       </div>
     </div>
 
-    <!-- Modules List -->
-    <div class="card">
-      <h2 class="text-lg font-semibold mb-4">Verfügbare Module</h2>
+    <!-- Tabs -->
+    <div class="flex gap-2 border-b dark:border-gray-700">
+      <button 
+        @click="activeTab = 'modules'"
+        :class="['px-4 py-2 font-medium border-b-2 transition-colors', 
+          activeTab === 'modules' ? 'border-primary-500 text-primary-600' : 'border-transparent text-gray-500 hover:text-gray-700']"
+      >
+        📦 {{ t('modules.title') }}
+      </button>
+      <button 
+        @click="activeTab = 'visibility'"
+        :class="['px-4 py-2 font-medium border-b-2 transition-colors', 
+          activeTab === 'visibility' ? 'border-primary-500 text-primary-600' : 'border-transparent text-gray-500 hover:text-gray-700']"
+      >
+        👁️ Sichtbarkeit
+      </button>
+    </div>
 
-      <div v-if="loading" class="text-center py-8 text-gray-500">Lädt...</div>
+    <!-- Modules Tab -->
+    <div v-if="activeTab === 'modules'" class="card">
+      <h2 class="text-lg font-semibold mb-4">{{ t('modules.title') }}</h2>
+
+      <div v-if="loading" class="text-center py-8 text-gray-500">{{ t('app.loading') }}</div>
 
       <div v-else class="space-y-4">
         <div 
@@ -121,12 +218,124 @@ async function toggleModule(mod: Module) {
       </div>
     </div>
 
-    <div class="card">
-      <h2 class="text-lg font-semibold mb-2">Hinweis</h2>
-      <p class="text-gray-500 text-sm">
-        Core-Module (Basis-System, Auftragsverwaltung) können nicht deaktiviert werden.
-        Änderungen an Modulen werden sofort wirksam.
-      </p>
+    <!-- Visibility Tab -->
+    <div v-if="activeTab === 'visibility'" class="card">
+      <div class="flex items-center justify-between mb-4">
+        <div>
+          <h2 class="text-lg font-semibold">👁️ Modul-Sichtbarkeit pro Rolle</h2>
+          <p class="text-sm text-gray-500 mt-1">Legen Sie fest, welche Module für welche Rollen sichtbar sind.</p>
+        </div>
+        <button 
+          @click="saveVisibility" 
+          :disabled="savingVisibility"
+          class="btn btn-primary"
+        >
+          {{ savingVisibility ? t('app.loading') : t('app.save') }}
+        </button>
+      </div>
+
+      <!-- Quick Actions -->
+      <div class="flex flex-wrap gap-2 mb-6 p-3 bg-gray-50 dark:bg-gray-700/50 rounded-lg">
+        <span class="text-sm text-gray-500 mr-2">Schnellauswahl:</span>
+        <button @click="setAllForRole('role_disponent', true)" class="text-xs btn btn-secondary">
+          Disponent: Alle an
+        </button>
+        <button @click="setAllForRole('role_disponent', false)" class="text-xs btn btn-secondary">
+          Disponent: Alle aus
+        </button>
+        <button @click="setAllForRole('role_mitarbeiter', true)" class="text-xs btn btn-secondary">
+          Mitarbeiter: Alle an
+        </button>
+        <button @click="setAllForRole('role_mitarbeiter', false)" class="text-xs btn btn-secondary">
+          Mitarbeiter: Alle aus
+        </button>
+      </div>
+
+      <!-- Visibility Matrix -->
+      <div class="overflow-x-auto">
+        <table class="w-full">
+          <thead>
+            <tr class="text-left text-sm text-gray-500 border-b border-gray-200 dark:border-gray-700">
+              <th class="pb-3 pr-4">Modul</th>
+              <th class="pb-3 px-4 text-center">
+                <div class="flex flex-col items-center">
+                  <span>👔</span>
+                  <span class="text-xs">Disponent</span>
+                </div>
+              </th>
+              <th class="pb-3 px-4 text-center">
+                <div class="flex flex-col items-center">
+                  <span>👷</span>
+                  <span class="text-xs">Mitarbeiter</span>
+                </div>
+              </th>
+              <th class="pb-3 px-4 text-center">
+                <div class="flex flex-col items-center">
+                  <span>🏢</span>
+                  <span class="text-xs">Subuntern.</span>
+                </div>
+              </th>
+            </tr>
+          </thead>
+          <tbody>
+            <tr 
+              v-for="mod in moduleList" 
+              :key="mod.key"
+              class="border-b border-gray-100 dark:border-gray-800"
+            >
+              <td class="py-3 pr-4">
+                <span class="font-medium">{{ mod.name }}</span>
+              </td>
+              <td class="py-3 px-4 text-center">
+                <button
+                  :class="[
+                    'w-8 h-8 rounded-lg transition-colors flex items-center justify-center',
+                    getVisibility(mod.key).role_disponent 
+                      ? 'bg-green-100 text-green-600 hover:bg-green-200' 
+                      : 'bg-gray-100 text-gray-400 hover:bg-gray-200'
+                  ]"
+                  @click="toggleVisibility(mod.key, 'role_disponent')"
+                >
+                  {{ getVisibility(mod.key).role_disponent ? '✓' : '✗' }}
+                </button>
+              </td>
+              <td class="py-3 px-4 text-center">
+                <button
+                  :class="[
+                    'w-8 h-8 rounded-lg transition-colors flex items-center justify-center',
+                    getVisibility(mod.key).role_mitarbeiter 
+                      ? 'bg-green-100 text-green-600 hover:bg-green-200' 
+                      : 'bg-gray-100 text-gray-400 hover:bg-gray-200'
+                  ]"
+                  @click="toggleVisibility(mod.key, 'role_mitarbeiter')"
+                >
+                  {{ getVisibility(mod.key).role_mitarbeiter ? '✓' : '✗' }}
+                </button>
+              </td>
+              <td class="py-3 px-4 text-center">
+                <button
+                  :class="[
+                    'w-8 h-8 rounded-lg transition-colors flex items-center justify-center',
+                    getVisibility(mod.key).role_subunternehmer 
+                      ? 'bg-green-100 text-green-600 hover:bg-green-200' 
+                      : 'bg-gray-100 text-gray-400 hover:bg-gray-200'
+                  ]"
+                  @click="toggleVisibility(mod.key, 'role_subunternehmer')"
+                >
+                  {{ getVisibility(mod.key).role_subunternehmer ? '✓' : '✗' }}
+                </button>
+              </td>
+            </tr>
+          </tbody>
+        </table>
+      </div>
+
+      <div class="mt-6 p-4 bg-blue-50 dark:bg-blue-900/20 rounded-lg">
+        <p class="text-sm text-blue-700 dark:text-blue-300">
+          <strong>💡 Hinweis:</strong> Chef sieht immer alle Module. 
+          Diese Einstellungen betreffen nur Disponenten, Mitarbeiter und Subunternehmer.
+        </p>
+      </div>
     </div>
   </div>
 </template>