Feat: Engine-Update-Mechanismus + Update-Checks (Hermes Agent/AnythingLLM) + WebUI->AnythingLLM

- Engine-Update: deploy/update-engine.sh laedt neuesten ggml-org Vulkan-Build + restart;
  MC_ENGINE_UPDATE_CMD verdrahtet, engine_update_job nutzt es (Script macht Restart selbst).
- Update-Checks: Hermes Agent (NousResearch/hermes-agent, Release-Datum vs. installiertes Commit)
  + AnythingLLM (Mintplex-Labs/anything-llm, neueste Version + /api/ping-Health), 1h-Cache.
  Neues Feld /api/maintenance/updates.components; UpdatesCard zeigt beide Zeilen.
- WebUI -> AnythingLLM: agent_status.webui_* zeigt jetzt auf ANYTHINGLLM_URL (192.168.178.155:3001,
  /api/ping); alle "Hermes WebUI"-Buttons/Labels (AgentView, AgentStatusCard, nav, GuideView,
  Services-Liste) -> "AnythingLLM". Lokaler hermes-webui-Dienst bleibt als Service-Control im SystemDrawer.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

backend/routers/system.py

@@ -12,7 +12,7 @@ import subprocess
 from fastapi import APIRouter, HTTPException
 from pydantic import BaseModel
 
-from config import GATEWAY_URL, HERMES_API_URL, HERMES_WEBUI_URL, LLAMA_SWAP_URL
+from config import GATEWAY_URL, HERMES_API_URL, LLAMA_SWAP_URL
 from services import backup as backup_svc
 from services.agent import agent_status
 from services.gateway import gateway_reachable
@@ -46,12 +46,12 @@ def services() -> dict:
             {"name": "Engine (llama-swap)", "url": LLAMA_SWAP_URL, "ok": engine_reachable()},
             {"name": "Gateway (integriert)", "url": gw_url, "ok": gateway_reachable()},
             {"name": "Hermes-Gateway", "url": HERMES_API_URL, "ok": a["gateway_reachable"]},
-            {"name": "Hermes-WebUI", "url": HERMES_WEBUI_URL, "ok": a["webui_reachable"]},
+            {"name": "AnythingLLM", "url": a["webui_url"], "ok": a["webui_reachable"]},
         ],
         "links": {
             "engine_ui": f"{LLAMA_SWAP_URL}/ui",
             "gateway": gw_url,
-            "hermes_webui": HERMES_WEBUI_URL,
+            "hermes_webui": a["webui_url"],
         },
     }