feat: enhance layer mask handling and opacity management

- Introduced `getLayerMask` utility to streamline layer mask retrieval.
- Updated layer rendering logic to incorporate layer masks and opacity adjustments.
- Added functionality to prevent dropping a group into its descendants.
- Enhanced image texture rendering to support opacity parameters across various rendering functions.
- Implemented group layer bounds application for better scaling and positioning.
- Added tests to ensure correct behavior when handling layer masks and group layers.
- Created new types for asset generation provenance to track generated assets more effectively.

commands/payloads.ts

@@ -29,6 +29,7 @@ import type {
   GenerationRemoveCandidatePayload,
   GenerationReplaceCandidatePixelsPayload,
   GenerationSelectCandidatePayload,
+  GenerationSetCompareModePayload,
 } from "./generation";
 import type { SelectionAddLayerPayload, SelectionSetPayload } from "./selection";
 import type { ToolEnterMaskEditPayload, ToolSetActivePayload, ToolSetBrushPreviewPayload, ToolSetBrushSettingsPayload, ToolSetBrushStrokePreviewPayload, ToolSetChromaKeySettingsPayload, ToolSetGenerateSettingsPayload, ToolSetMagicWandSettingsPayload, ToolSetMaskViewModePayload } from "./tool";
@@ -81,6 +82,7 @@ export type CommandPayloads = {
   [commandIds.toolExitTemporaryPan]: void;
   [commandIds.generationAddCandidate]: GenerationAddCandidatePayload;
   [commandIds.generationSelectCandidate]: GenerationSelectCandidatePayload;
+  [commandIds.generationSetCompareMode]: GenerationSetCompareModePayload;
   [commandIds.generationRemoveCandidate]: GenerationRemoveCandidatePayload;
   [commandIds.generationClearCandidates]: void;
   [commandIds.generationApplyCandidateAsLayer]: GenerationApplyCandidateAsLayerPayload;