Function getMaskFile

src/utils/imageFileUtils.ts:172–184

(
  imageFiles: Map<string, File> | undefined,
  imageName: string
)

 * - "cam1/photo.jpg" -> "masks/cam1/photo.jpg.png"
 */
export function getMaskFile(
  imageFiles: Map<string, File> | undefined,
  imageName: string
): File | undefined {
  if (!imageFiles || !imageName) return undefined;

  for (const path of getMaskLookupPaths(imageName)) {
    const match = imageFiles.get(path) || imageFiles.get(path.toLowerCase());
    if (match) return match;
  }

  return undefined;
}

/**
 * Get statistics for local image files.