UI: helle Seitenleiste statt schwarz + aufgewertete Topbar

Look & Feel an die Referenz angepasst: weiße Navigation mit Orange-Akzent
(aktives Item orange-soft, Chevrons, graue Icons) statt dunkler Sidebar.
Topbar mit Nutzer-Block (Avatar-Initialen, Name, Rolle, Firma). Navi bleibt
flach (keine Gruppen-Einteilung). name im CurrentUser-Typ ergänzt.

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

frontend/src/layouts/DashboardLayout.vue

@@ -26,6 +26,16 @@ const nav = computed<NavItem[]>(() => [
 const contextLabel = computed(() =>
   auth.user?.company?.name ?? auth.user?.reseller?.name ?? 'Plattform',
 )
+const userName = computed(() => auth.user?.name || auth.user?.email || '')
+const initials = computed(() =>
+  userName.value.split(/[\s@.]+/).filter(Boolean).slice(0, 2).map((s) => s[0]).join('').toUpperCase() || 'U',
+)
+const roleLabel = computed(() => {
+  if (auth.isPlatformAdmin) return 'Plattform-Admin'
+  if (auth.isResellerAdmin) return 'Reseller-Admin'
+  if (auth.isCompanyAdmin) return 'Firmen-Admin'
+  return 'Mitarbeiter'
+})
 
 function logout() {
   auth.logout()
@@ -42,14 +52,18 @@ async function stopImpersonation() {
   <div class="shell">
     <aside class="sidebar">
       <div class="sidebar__brand">
-        <span class="brand-logo" style="color:#fff">vcard4<span class="tag">reseller</span></span>
+        <span class="brand-logo">vcard4<span class="tag">reseller</span></span>
       </div>
       <nav class="sidebar__nav">
         <RouterLink v-for="item in nav" :key="item.to" :to="item.to" class="navlink"
                     :class="{ active: $route.path === item.to }">
+          <span class="navlink__icon">
             <svg viewBox="0 0 24 24" width="18" height="18" fill="none" stroke="currentColor" stroke-width="2"
                  stroke-linecap="round" stroke-linejoin="round"><path :d="item.icon" /></svg>
-          <span>{{ item.label }}</span>
+          </span>
+          <span class="navlink__label">{{ item.label }}</span>
+          <svg class="navlink__chev" viewBox="0 0 24 24" width="16" height="16" fill="none" stroke="currentColor"
+               stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M9 18l6-6-6-6" /></svg>
         </RouterLink>
       </nav>
     </aside>
@@ -65,7 +79,13 @@ async function stopImpersonation() {
           <strong>{{ contextLabel }}</strong>
         </div>
         <div class="topbar__user">
-          <span class="muted">{{ auth.user?.email }}</span>
+          <div class="user">
+            <div class="user__avatar">{{ initials }}</div>
+            <div class="user__meta">
+              <strong>{{ userName }}</strong>
+              <span class="muted">{{ roleLabel }}<template v-if="auth.user?.company"> · {{ auth.user.company.name }}</template></span>
+            </div>
+          </div>
           <button class="btn btn-ghost btn-sm" @click="logout">Abmelden</button>
         </div>
       </header>
@@ -77,30 +97,46 @@ async function stopImpersonation() {
 </template>
 
 <style scoped>
-.shell { display: flex; min-height: 100vh; }
+.shell { display: flex; min-height: 100vh; background: var(--bg); }
 
 .sidebar {
-  width: 240px; flex-shrink: 0; background: var(--sidebar); color: #cfcfd2;
+  width: 248px; flex-shrink: 0; background: #fff; color: var(--text);
+  border-right: 1px solid var(--line);
   display: flex; flex-direction: column; position: sticky; top: 0; height: 100vh;
 }
-.sidebar__brand { padding: 1.4rem 1.3rem; font-size: 1.15rem; }
+.sidebar__brand { padding: 1.5rem 1.4rem 1.2rem; font-size: 1.2rem; }
-.sidebar__nav { display: flex; flex-direction: column; gap: 2px; padding: .5rem .7rem; }
+.sidebar__nav { display: flex; flex-direction: column; gap: 3px; padding: .4rem .7rem; overflow-y: auto; }
 .navlink {
-  display: flex; align-items: center; gap: .8rem; padding: .7rem .8rem;
+  display: flex; align-items: center; gap: .75rem; padding: .62rem .7rem;
-  border-radius: var(--radius-sm); color: #c2c2c6; font-size: .92rem; font-weight: 600;
+  border-radius: var(--radius-sm); color: #5b5b5b; font-size: .92rem; font-weight: 600;
 }
-.navlink:hover { background: var(--sidebar-hover); color: #fff; text-decoration: none; }
+.navlink__icon { display: flex; color: #9a9a9a; }
-.navlink.active { background: var(--psc-orange); color: #fff; }
+.navlink__label { flex: 1; }
+.navlink__chev { color: #cfcfcf; }
+.navlink:hover { background: #f6f6f6; color: var(--text); text-decoration: none; }
+.navlink:hover .navlink__icon { color: #6f6f6f; }
+.navlink.active { background: var(--psc-orange-soft); color: var(--psc-orange-dark); }
+.navlink.active .navlink__icon,
+.navlink.active .navlink__chev { color: var(--psc-orange); }
 
 .main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
 .imp-banner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .55rem 1.6rem; background: var(--psc-orange); color: #fff; font-size: .9rem; font-weight: 600; }
 .imp-banner .btn { background: #fff; color: var(--psc-orange-dark); }
 .topbar {
   display: flex; align-items: center; justify-content: space-between;
-  padding: 1rem 1.6rem; background: #fff; border-bottom: 1px solid var(--line);
+  padding: .85rem 1.6rem; background: #fff; border-bottom: 1px solid var(--line);
 }
 .topbar__ctx { display: flex; flex-direction: column; line-height: 1.2; }
 .topbar__ctx .muted { font-size: .72rem; text-transform: uppercase; letter-spacing: .06em; }
-.topbar__user { display: flex; align-items: center; gap: 1rem; }
+.topbar__user { display: flex; align-items: center; gap: 1.1rem; }
+.user { display: flex; align-items: center; gap: .65rem; }
+.user__avatar {
+  width: 40px; height: 40px; border-radius: 50%; flex-shrink: 0;
+  background: var(--psc-orange-soft); color: var(--psc-orange-dark);
+  display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: .85rem;
+}
+.user__meta { display: flex; flex-direction: column; line-height: 1.25; }
+.user__meta strong { font-size: .92rem; }
+.user__meta .muted { font-size: .76rem; }
 .content { padding: 1.8rem; }
 </style>

frontend/src/stores/auth.ts

@@ -10,6 +10,7 @@ export interface TenantRef {
 export interface CurrentUser {
   id: string
   email: string
+  name?: string
   roles: string[]
   reseller: TenantRef | null
   company: TenantRef | null