feat: implement inpainting functionality with mask handling

- Added `createMaskedPixelReplacementSource` function to handle pixel replacement using inpainting.
- Introduced `buildInpaintBundle` to prepare inpainting data including mask generation and validation.
- Created utility functions for mask operations such as `applyMaskedContentModeToRgba`, `expandRectWithinBounds`, and others for mask manipulation.
- Developed tests for inpainting preparation and mask raster utilities to ensure functionality and correctness.
- Implemented mask raster operations including inversion, feathering, blurring, and more.

commands/index.ts

@@ -6,6 +6,7 @@ export {
   documentAddImageLayerCommand,
   documentAddLayerMaskCommand,
   documentAddRasterLayerCommand,
+  documentApplyLayerMaskOperationCommand,
   documentCommands,
   documentGroupLayersCommand,
   documentMoveLayerCommand,
@@ -30,6 +31,7 @@ export type {
   DocumentAddImageLayerPayload,
   DocumentAddLayerMaskPayload,
   DocumentAddRasterLayerPayload,
+  DocumentApplyLayerMaskOperationPayload,
   DocumentGroupLayersPayload,
   DocumentMoveLayerPayload,
   DocumentRemoveArtboardPayload,
@@ -45,8 +47,25 @@ export type {
   DocumentSetLayerVisiblePayload,
   DocumentUpdateAssetSourcePayload,
   DocumentUngroupLayerPayload,
+  LayerMaskOperation,
 } from "./document";
 export { historyCommands, historyRedoCommand, historyUndoCommand } from "./history";
+export {
+  generationAddCandidateCommand,
+  generationApplyCandidateAsLayerCommand,
+  generationClearCandidatesCommand,
+  generationCommands,
+  generationRemoveCandidateCommand,
+  generationReplaceCandidatePixelsCommand,
+  generationSelectCandidateCommand,
+} from "./generation";
+export type {
+  GenerationAddCandidatePayload,
+  GenerationApplyCandidateAsLayerPayload,
+  GenerationRemoveCandidatePayload,
+  GenerationReplaceCandidatePixelsPayload,
+  GenerationSelectCandidatePayload,
+} from "./generation";
 export type { CommandDispatcher, Dispatch } from "./dispatcher";
 export type { CommandId, CommandPayloads } from "./payloads";
 export { createCommandDispatcher } from "./dispatcher";