feat: add MCP server with resources, tools, auth, and Traefik routing

- Add backend/app/mcp_server.py with FastMCP server (hms-cms)
- Resources: design-rules, page-structure, sync-status
- Tools: trigger_sync, get_sync_log, set_rentman_token, read_file,
  write_file, create_page, deploy, git_commit, git_status
- Bearer token auth via MCP_AUTH_TOKEN env var
- Mount MCP at /mcp with streamable HTTP transport
- Integrate session manager in FastAPI lifespan
- Add Traefik labels for external /mcp route on hms.media-on.de
- Add git, docker.io, curl to backend Dockerfile
- Mount repo root + docker socket in backend container
- Add mcp>=1.0.0 to requirements.txt

frontend-nuxt-old/components/AppHeader.vue

@@ -0,0 +1,65 @@
+<template>
+  <header class="hms-header" role="banner">
+    <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
+      <div class="flex items-center justify-between" :style="{ height: 'var(--header-height)' }">
+        <NuxtLink to="/" class="flex items-center gap-2" style="color: var(--text)" aria-label="HMS Licht & Ton Startseite">
+          <HmsLogo :size="40" />
+          <div class="hidden sm:block leading-tight">
+            <div class="font-bold text-base" style="color: var(--text)">HMS Licht & Ton</div>
+            <div class="text-xs" style="color: var(--secondary)">Veranstaltungstechnik</div>
+          </div>
+        </NuxtLink>
+        <nav class="hidden md:flex items-center gap-1" role="navigation" aria-label="Hauptnavigation">
+          <NuxtLink v-for="item in navItems" :key="item.to" :to="item.to"
+            class="hms-nav-btn px-4 py-2 rounded-lg text-sm font-medium"
+            :style="isActive(item.to) ? { color: 'var(--color-accent)', background: 'var(--color-accent-light)' } : { color: 'var(--text-muted)' }"
+            :aria-current="isActive(item.to) ? 'page' : undefined">
+            {{ item.label }}
+          </NuxtLink>
+          <NuxtLink to="/warenkorb" class="hms-btn hms-btn-primary text-sm ml-2 px-4 py-2">
+            <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M3 3h2l.4 2M7 13h10l4-8H5.4M7 13L5.4 5M7 13l-2.293 2.293c-.63.63-.184 1.707.707 1.707H17m0 0a2 2 0 100 4 2 2 0 000-4zm-8 2a2 2 0 11-4 0 2 2 0 014 0z"/></svg>
+            Warenkorb
+          </NuxtLink>
+        </nav>
+        <button @click="mobileMenuOpen = !mobileMenuOpen" class="md:hidden p-2 rounded-lg" :style="{ color: 'var(--text-muted)' }" :aria-expanded="mobileMenuOpen" aria-label="Menü öffnen/schließen">
+          <svg class="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+            <path v-if="!mobileMenuOpen" stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 6h16M4 12h16M4 18h16"/>
+            <path v-else stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12"/>
+          </svg>
+        </button>
+      </div>
+    </div>
+    <transition name="mobile-menu">
+      <nav v-if="mobileMenuOpen" id="mobile-menu" class="md:hidden border-t" :style="{ borderColor: 'var(--border)', background: 'var(--panel)' }" role="navigation" aria-label="Mobile Navigation">
+        <div class="px-4 py-3 space-y-1">
+          <NuxtLink v-for="item in navItems" :key="item.to" :to="item.to" @click="mobileMenuOpen = false"
+            class="hms-nav-btn block w-full text-left px-4 py-3 rounded-lg text-sm font-medium"
+            :style="isActive(item.to) ? { color: 'var(--color-accent)', background: 'var(--color-accent-light)' } : { color: 'var(--text-muted)' }">
+            {{ item.label }}
+          </NuxtLink>
+          <NuxtLink to="/warenkorb" @click="mobileMenuOpen = false" class="block w-full text-left px-4 py-3 rounded-lg text-sm font-medium text-white" style="background: var(--color-accent)">🛒 Warenkorb</NuxtLink>
+        </div>
+      </nav>
+    </transition>
+  </header>
+</template>
+
+<script setup lang="ts">
+import { ref } from 'vue'
+import { useRoute } from 'vue-router'
+
+const route = useRoute()
+const mobileMenuOpen = ref(false)
+
+const navItems = [
+  { label: 'Home', to: '/' },
+  { label: 'Referenzen', to: '/referenzen' },
+  { label: 'Mietkatalog', to: '/mietkatalog' },
+  { label: 'Kontakt', to: '/kontakt' }
+]
+
+function isActive(to: string): boolean {
+  if (to === '/') return route.path === '/'
+  return route.path.startsWith(to)
+}
+</script>