feat: add team management UI

- New UsersView for managing organization members
- Role badges with colors (CEO, CRM Admin, Manager, User)
- Create/invite users, edit, deactivate, delete, reset password
- Navigation only visible for owner/admin roles

src/layouts/AppLayout.vue

@@ -1,5 +1,5 @@
 <script setup>
-import { ref, onMounted, onUnmounted } from 'vue'
+import { ref, computed, onMounted, onUnmounted } from 'vue'
 import { useRouter, useRoute } from 'vue-router'
 import { useAuthStore } from '@/stores/auth'
 
@@ -9,7 +9,7 @@ const auth = useAuthStore()
 const sidebarOpen = ref(false)
 const isMobile = ref(false)
 
-const navItems = [
+const baseNavItems = [
   { name: 'Dashboard', path: '/', icon: 'chart-pie' },
   { name: 'Kontakte', path: '/contacts', icon: 'users' },
   { name: 'Firmen', path: '/companies', icon: 'building-office' },
@@ -17,6 +17,15 @@ const navItems = [
   { name: 'Aktivitäten', path: '/activities', icon: 'clipboard-list' },
 ]
 
+// Team nav item only for admin/owner
+const navItems = computed(() => {
+  const items = [...baseNavItems]
+  if (auth.user?.role === 'owner' || auth.user?.role === 'admin') {
+    items.push({ name: 'Team', path: '/team', icon: 'user-group' })
+  }
+  return items
+})
+
 function checkMobile() {
   isMobile.value = window.innerWidth < 768
   if (!isMobile.value) {
@@ -145,6 +154,9 @@ function isActive(path) {
           <svg v-if="item.icon === 'clipboard-list'" class="w-5 h-5 flex-shrink-0" fill="none" viewBox="0 0 24 24" stroke="currentColor">
             <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-3 7h3m-3 4h3m-6-4h.01M9 16h.01" />
           </svg>
+          <svg v-if="item.icon === 'user-group'" class="w-5 h-5 flex-shrink-0" fill="none" viewBox="0 0 24 24" stroke="currentColor">
+            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M17 20h5v-2a3 3 0 00-5.356-1.857M17 20H7m10 0v-2c0-.656-.126-1.283-.356-1.857M7 20H2v-2a3 3 0 015.356-1.857M7 20v-2c0-.656.126-1.283.356-1.857m0 0a5.002 5.002 0 019.288 0M15 7a3 3 0 11-6 0 3 3 0 016 0zm6 3a2 2 0 11-4 0 2 2 0 014 0zM7 10a2 2 0 11-4 0 2 2 0 014 0z" />
+          </svg>
           <span>{{ item.name }}</span>
         </RouterLink>
       </nav>