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/HmsLogo.vue

@@ -0,0 +1,10 @@
+<template>
+  <svg class="hms-logo-svg" viewBox="0 0 200 200" :style="`height:${size}px;width:auto`" aria-label="HMS Licht & Ton Logo" role="img">
+    <path fill="currentColor" d="M166.266,172.872h-37.687v-60.718H74.226v60.718H36.539V26.956h37.687v56.335h54.354V26.956h37.687V172.872z" />
+    <rect x="23.598" y="15.343" fill="none" stroke="#FA5C01" stroke-width="15.1525" stroke-miterlimit="10" width="155.612" height="168.874" />
+  </svg>
+</template>
+
+<script setup lang="ts">
+withDefaults(defineProps<{ size?: number }>(), { size: 40 })
+</script>