Closes four operator complaints from the 0.5.3 review.
1. Edges now react to hover.
Added an interaction layer between the edge painter and
the endpoint nodes. A MouseRegion tracks the cursor in
canvas coords; every move runs a spatial hit-test
against each edge's bezier sampled at 24 points. The
closest edge within 8 px highlights in the primary
accent so the operator sees what they're aiming at.
Cursor leaves canvas → highlight clears.
2. Right-click / long-press on edges opens a Disconnect
menu.
Same interaction layer carries `onSecondaryTapDown` and
`onLongPressStart` handlers. Both run the same hit-test
and pop the menu at the cursor. Disconnect clears the
target's expression (step.with[field] = '' or
outputs[name] = ''), edge disappears, target port flips
outlined.
3. Long-press is now available alongside right-click
EVERYWHERE the context menu lives — step nodes, port
dots, edges. Trackpad-only users whose "two-finger
click" isn't bound to secondary get the same affordances
as mouse users.
4. Background pattern is now operator-selectable: cycles
through dots → grid → blank via a small icon button on
the bottom-right canvas controls. The button's icon and
tooltip reflect the next state. Picked dots as the
default because they're least visually noisy at scale.
5. Zoom indicator: a mono "100%" readout next to Fit-to-
screen shows the current InteractiveViewer scale,
updating live as the operator pinches / scrolls. Tap
to snap back to 100 % without losing pan position.
The bottom-right control cluster is now:
[pattern] [reset layout] [fit to screen] [zoom%]
Version 0.5.3 -> 0.6.0 (minor bump — new interaction
surfaces + visible toolbar additions).
Signed-off-by: flemming-it <sf@flemming.it>
flemming-it
5ff7a1c118