Fix Qdrant healthcheck in docker-compose

The qdrant image ships no curl/wget, so the curl-based healthcheck always failed
and reported the container unhealthy. Probe the REST port with bash /dev/tcp
instead.

docker-compose.yml

@@ -42,9 +42,10 @@ services:
       - "6334:6334"
     volumes:
       - qdrant_data:/qdrant/storage
+    # Qdrant image ships no curl/wget; use bash /dev/tcp to probe the REST port.
     healthcheck:
-      test: ["CMD-SHELL", "curl -f http://localhost:6333/health || exit 1"]
-      interval: 5s
+      test: ["CMD", "bash", "-c", "exec 3<>/dev/tcp/localhost/6333"]
+      interval: 10s
       timeout: 5s
       retries: 5