feat: add inpaint region functionality and related tools

- Enhanced cursor behavior for new tools: semantic select, mask lasso, and mask rectangle.
- Updated mask edit state to include mask asset ID and kind.
- Implemented inpaint region commands for adding, applying, and removing inpaint regions.
- Introduced new operations for lasso and semantic selection tools.
- Created UI components for candidate review and inpaint region management.
- Added tests for inpaint region commands to ensure functionality.
- Updated various components to support new inpaint features and improve user experience.

commands/generation.test.ts

@@ -231,11 +231,14 @@ function generationCandidate(id: string, inpaint = false): GenerationCandidate {
         maskImage: "mask",
         inpaint: {
           targetLayerId: "source-layer",
-          maskLayerId: "mask-layer",
+          regionId: "region",
           sourceAssetId: "source-asset",
           maskAssetId: "mask-asset",
           inputImage: "input",
           maskImage: "mask",
+          editMaskImage: "edit-mask",
+          blendMaskImage: "blend-mask",
+          revision: { source: "source-revision", mask: "mask-revision" },
           crop: {
             assetBounds: { x: 0, y: 0, w: 64, h: 64 },
             documentBounds: { x: 0, y: 0, w: 64, h: 64 },