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.

renderer/image-texture-programs.ts

@@ -80,6 +80,8 @@ export function maskVisualizationModeValue(mode: MaskVisualizationMode) {
       return 1;
     case "hiddenOverlay":
       return 2;
+    case "activeOverlay":
+      return 3;
   }
 }
 
@@ -119,7 +121,7 @@ function createMaskVisualizationProgram(gl: WebGL2RenderingContext): MaskVisuali
         return;
       }
 
-      float alpha = (1.0 - maskAlpha) * u_color.a;
+      float alpha = (u_mode == 3 ? maskAlpha : (1.0 - maskAlpha)) * u_color.a;
       outColor = vec4(u_color.rgb * alpha, alpha);
     }`,
   );