fix: taos-explorer 挂载改为父目录，避免匿名卷覆盖

deploy/scripts/start-taos-explorer.sh

 # Start taos-explorer container
 # Uses native connection (cluster_native) to connect directly to taosd
 # REST API (taosAdapter) is no longer required
+#
+# Data mount note: TDengine image defines VOLUME /var/lib/taos which creates
+# an anonymous volume that overrides child bind mounts. We mount the parent
+# directory here; actual explorer data lives in DATA_DIR/explorer/ subdirectory.
 
 set -e
 
     --network bridge \
     --restart unless-stopped \
     -p 127.0.0.1:6060:6060 \
-    -v "${DATA_DIR}:/var/lib/taos/explorer" \
+    -v "${DATA_DIR}:/var/lib/taos" \
     -v "${CFG_FILE}:/etc/taos/explorer.toml:ro" \
     -e EXPLORER_SKIP_REGISTER=true \
     "${IMAGE}" \