Add comprehensive canvas resize functionality with three resize methods.
Features:
- Canvas Size dialog accessible from Image menu
- Three resize methods:
* Scale: Stretch/shrink content to fit new size
* Crop: Crop or center content without scaling
* Expand: Expand canvas, center existing content
- Maintain aspect ratio toggle with link/unlink button
- Dimension validation (1-10000 pixels)
- Real-time preview of new dimensions
- Applies to all layers simultaneously
- Toast notifications for success/errors
Changes:
- Created components/modals/canvas-resize-dialog.tsx
- Added "Canvas Size..." menu item to Image menu
- Integrated with useLayerStore for layer updates
- Uses toast utility for user feedback
- Validates dimensions before applying
- Supports linked/unlinked aspect ratio
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Co-Authored-By: Claude <noreply@anthropic.com>
Sebastian Krüger
5f389c7b71