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/ServiceCard.vue

@@ -0,0 +1,11 @@
+<template>
+  <div class="hms-card p-6">
+    <div class="hms-icon-circle mb-4"><span aria-hidden="true">{{ icon }}</span></div>
+    <h3 class="text-lg font-semibold mb-2" style="color: var(--text)">{{ title }}</h3>
+    <p class="text-sm leading-relaxed" style="color: var(--text-muted)">{{ description }}</p>
+  </div>
+</template>
+
+<script setup lang="ts">
+defineProps<{ icon: string; title: string; description: string }>()
+</script>