release: nexus btpanel session fix and app-v2

docker/docker-compose.1panel.yml

@@ -0,0 +1,12 @@
+# 1Panel overlay — join Nexus to 1panel-network (App Store MySQL/Redis use this network).
+# Applied automatically when `docker network inspect 1panel-network` succeeds (deploy/nexus-1panel.sh).
+
+services:
+  nexus:
+    networks:
+      - 1panel-network
+
+networks:
+  1panel-network:
+    external: true
+    name: 1panel-network