Dropping a top-level node over any container_mode node (proxmox,
docker_host, ...) now pops a confirm modal that nests it as a child
(sets parentId), mirroring the existing drop-onto-group flow.
- store: addToContainer(containerId, childId)
- CanvasContainer: detect container_mode intersection on drag stop
(group still wins if both intersect)
- generalize ConfirmAddToGroupModal with a container variant
ha-relevant: yes
Make Node Groups mutable instead of fixed-at-creation:
- removeFromGroup / addToGroup store actions (inverse pair, history-aware)
- right panel: per-member remove button + editable group description
(reuses data.notes, no backend/serializer change)
- drag a node over a group → confirm modal to add it (getIntersectingNodes)
Tests: +21 (store, panel, canvas detection, modal).
ha-relevant: yes
Pouzor