Three flow-editor UX upgrades:
1. Wider deselect zone. A new translucent
Positioned.fill GestureDetector wraps the outermost
Stack (above the InteractiveViewer). Tapping the dark
area outside the canvas grid — which used to do
nothing — now closes the properties panel.
2. Edge selection. Click a wire → controller.selectEdge
stamps the edge key. Click again or click background →
deselects. Selection is mutually exclusive with step
selection, enforced inside the controller so the panel
never tries to render both. Selected edges highlight
with the same accent the hover state uses.
3. Properties panel grows an edge-info mode. When an
edge is selected, the panel shows:
- source qualified name (e.g. inputs.document or
summarize.response)
- target qualified name
- type colour swatch + name per endpoint (LabVIEW
palette)
- type-compatibility pill (green / red)
- Disconnect button that removes the edge in one click
l10n: 8 new edgeInfo* strings in EN + DE.
Editor tests still pass (20).
Signed-off-by: flemming-it <sf@flemming.it>
flemming-it
59aa8fe78e