export function chebyshevDistance(c1, c2) { throw new Error('Not implemented'); } export function createFloodFillMask(imageData, seedColor, tolerance) { throw new Error('Not implemented'); } export function applyMaskToImageData(imageData, mask, replacementColor) { throw new Error('Not implemented'); } export function softEdges(imageData, mask) { throw new Error('Not implemented'); } export function removeBackground(canvas, seedColor, tolerance = 30) { throw new Error('Not implemented'); } export async function pickColorFromCanvas(canvas) { throw new Error('Not implemented'); }