Core React 19 upgrade with all necessary type fixes:
- Update RefObject types to accept T | null (React 19 refs always nullable)
- Add JSX namespace imports (no longer global in React 19)
- Add initial values to useRef calls (required in React 19)
- Fix ReactElement.props unknown type in config-form components
- Fix IconWrapper interface to use HTMLAttributes instead of index signature
- Add monaco-editor as dev dependency for type declarations
- Upgrade react-konva to v19, eslint-plugin-react-hooks to v5
* initial working konva
* working multi polygons
* multi zones
* clean up
* new zone dialog
* clean up
* relative coordinates and colors
* fix color order
* better motion tuner
* objects for zones
* progress
* merge dev
* edit pane
* motion and object masks
* filtering
* add objects and unsaved to type
* motion tuner, edit controls, tooltips
* object and motion edit panes
* polygon item component, switch color, object form, hover cards
* working zone edit pane
* working motion masks
* object masks and deletion of all types
* use FilterSwitch
* motion tuner fixes and tweaks
* clean up
* tweaks
* spaces in camera name
* tweaks
* allow dragging of points while drawing polygon
* turn off editing mode when switching camera
* limit interpolated coordinates and use crosshair cursor
* padding
* fix tooltip trigger for icons
* konva tweaks
* consolidate
* fix top menu items on mobile
