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/SpeakerIcon.vue

@@ -0,0 +1,24 @@
+<template>
+  <span class="hms-speaker-icon-wrap" v-html="svgStr"></span>
+</template>
+
+<script setup lang="ts">
+import { computed } from 'vue'
+
+const props = withDefaults(defineProps<{ type?: string }>(), { type: 'linearray' })
+
+const icons: Record<string, string> = {
+  linearray: '<rect x="8" y="2" width="16" height="40" rx="2"/><circle cx="16" cy="10" r="3"/><circle cx="16" cy="22" r="4"/><circle cx="16" cy="34" r="3"/>',
+  subwoofer: '<rect x="4" y="8" width="24" height="20" rx="3"/><circle cx="16" cy="18" r="7"/><circle cx="16" cy="18" r="3"/>',
+  monitor: '<path d="M4 6h20v14H4z"/><path d="M8 24h12"/><circle cx="14" cy="13" r="3"/>',
+  pointsource: '<circle cx="16" cy="16" r="12"/><circle cx="16" cy="16" r="6"/><circle cx="16" cy="16" r="2"/>',
+  column: '<rect x="10" y="2" width="12" height="44" rx="2"/><circle cx="16" cy="8" r="2"/><circle cx="16" cy="16" r="2"/><circle cx="16" cy="24" r="2"/><circle cx="16" cy="32" r="2"/><circle cx="16" cy="40" r="2"/>',
+  movinghead: '<rect x="10" y="4" width="12" height="16" rx="2"/><path d="M16 20v8"/><rect x="8" y="28" width="16" height="4" rx="1"/>'
+}
+
+const svgStr = computed(() =>
+  '<svg class="hms-speaker-icon" viewBox="0 0 32 48" fill="none" stroke="currentColor" stroke-width="1.5" aria-hidden="true">' +
+  (icons[props.type] || icons.linearray) +
+  '</svg>'
+)
+</script>