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/EquipmentCard.vue

@@ -0,0 +1,22 @@
+<template>
+  <div class="hms-eq-card" @click="$emit('click', item)" role="article" tabindex="0" @keydown.enter="$emit('click', item)">
+    <div class="aspect-[4/3] flex items-center justify-center relative overflow-hidden" style="background: var(--surface)">
+      <img v-if="item.image" :src="item.image" :alt="item.name" loading="lazy" class="absolute inset-0 w-full h-full object-cover" />
+      <div v-else class="text-4xl" style="color: var(--secondary)">📦</div>
+      <span v-if="item.category" class="hms-badge hms-badge-primary absolute top-3 left-3">{{ item.category }}</span>
+    </div>
+    <div class="p-4">
+      <h3 class="font-semibold text-sm mb-1 truncate" style="color: var(--text)">{{ item.name }}</h3>
+      <p class="text-xs mb-3 line-clamp-2" style="color: var(--secondary)">{{ item.description }}</p>
+      <div class="flex items-center justify-between">
+        <span class="text-xs" style="color: var(--secondary)">{{ item.code }}</span>
+        <button @click.stop="$emit('add-to-cart', item)" class="hms-btn hms-btn-ghost text-xs px-3 py-1.5" style="color: var(--color-accent)" :aria-label="item.name + ' zum Warenkorb hinzufügen'">+ Hinzufügen</button>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+defineProps<{ item: Record<string, any> }>()
+defineEmits<{ click: [item: any]; 'add-to-cart': [item: any] }>()
+</script>