Three connected bugs in PR #158's collapse feature:
1. Toggle wired to the wrong component
The chevron was on GroupRectNode and computed children via React Flow
parentId. But in this codebase parentId is set by createGroup() on
type=group nodes, not on groupRect zones — zones are decorative
rectangles. Result: childrenCount was always 0 on every zone and the
button never rendered, so the feature was unreachable from the UI.
Fix:
- Add the same chevron toggle to GroupNode (the actual container).
parentId children are already known there, so the existing BFS in
computeCollapseInfo hides them when data.collapsed flips.
- For GroupRectNode, switch childrenCount to spatial containment so
drawn zones also work: hit-test other nodes' bbox centres against
the zone bbox.
2. Visibility filter ignored spatial zones
Extend computeCollapseInfo with a second pass that hides every node
whose centre lies inside a collapsed groupRect, plus the parentId
subtrees of those nodes (so a Proxmox host inside a collapsed zone
takes its VMs/LXCs with it). Edge rewiring routes vanished endpoints
to the same visible zone via a unified hiddenBy map populated by both
passes.
3. Save dropped data.collapsed for every type except groupRect
The DevTools payload was the smoking gun: for a type=group node the
serializer wrote custom_colors: {show_border: true} with no collapsed
key, so the backend stored a stale false on every save. Only the
groupRect branch of serializeNode/deserializeApiNode stashed and
hoisted the flag. Move the stash + hoist to the general branch too
(backend's custom_colors is dict[str, Any] so no schema change).
Tests: 11 new cases for spatial containment + GroupNode toggle UI, and
4 round-trip cases for collapse on non-groupRect types.
Pouzor
b71c96897a