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.

view/bottom-controls/GenerateActionControls.tsx

@@ -121,6 +121,7 @@ function CandidateControls({
       <span className="px-2 text-xs font-medium text-white/55" title={`${candidate.settings.model} · ${candidate.mode}`}><strong className="block font-semibold text-white/75">Provisional result</strong>Seed {candidate.seed}</span>
       <CandidateCompareControls compareMode={compareMode} disabled={disabled} dispatch={dispatch} />
       <CandidateButton disabled={disabled} label="Regenerate" title="Regenerate same mask and crop" onClick={() => rerun("Regenerate", candidate.settings)} />
+      <CandidateButton disabled={disabled || !candidate.inpaint} label="Current mask" title="Rebuild the crop and generate from the current AI edit region" onClick={() => void workflow.rebuildFromCurrentRegion(candidate.id)} />
       <CandidateButton
         disabled={disabled}
         label="Lower"
@@ -159,7 +160,7 @@ function CandidateControls({
         onClick={() => {
           if (!candidate.inpaint) return;
           dispatch(commandIds.selectionSet, { artboardId: candidate.placement.artboardId, layerIds: [candidate.inpaint.targetLayerId] });
-          dispatch(commandIds.toolEnterMaskEdit, { targetLayerId: candidate.inpaint.targetLayerId, maskLayerId: candidate.inpaint.maskLayerId });
+          dispatch(commandIds.toolEnterInpaintRegionEdit, { targetLayerId: candidate.inpaint.targetLayerId, regionId: candidate.inpaint.regionId });
         }}
       />
       <CandidateButton disabled={disabled} label="Dismiss" title="Remove this candidate" onClick={() => dispatch(commandIds.generationRemoveCandidate, { candidateId: candidate.id })} />