Add 10 tests covering the Cmd/Ctrl+Arrow resize shortcut:
- ArrowUp/Down resizes height (−/+10px)
- ArrowLeft/Right resizes width (−/+10px)
- Shift modifier uses 2px step for fine control
- min-height constraint respected when shrinking
- Guard: no-op when no node selected
- Guard: skipped when modal dialog is open
- Plain arrow keys (no modifier) fire moveNode instead
- Alt+Arrow is skipped (not a resize combo)
Also extends the mock store state with `onNodesChange` and node
`width`/`height` fields needed for the resize tests.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Molecule AI Core-FE
2da036204c