fix: use node fetch for kordoc healthcheck (wget/curl missing in slim)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docker-compose.yml

@@ -24,7 +24,7 @@ services:
     volumes:
       - ${NAS_SMB_PATH:-/Volumes/Document_Server}:/documents:ro
     healthcheck:
-      test: ["CMD", "wget", "--spider", "-q", "http://localhost:3100/health"]
+      test: ["CMD", "node", "-e", "fetch('http://localhost:3100/health').then(r=>{process.exit(r.ok?0:1)}).catch(()=>process.exit(1))"]
       interval: 10s
       timeout: 5s
       retries: 3