Use full CanvasKit build for JPEG/WEBP encoding support

The default canvaskit.wasm doesn't include JPEG/WEBP encoders
(encodeToBytes returns null). The full build is only ~1MB larger.

src/engine/render-image.ts

@@ -87,8 +87,12 @@ export function renderNodesToImage(
     surface.flush()
     const image = surface.makeImageSnapshot()
     const quality = options.quality ?? defaultQuality(options.format)
-    const encoded = image.encodeToBytes(ckImageFormat(ck, options.format), quality)
+    const fmt = ckImageFormat(ck, options.format)
+    const encoded = image.encodeToBytes(fmt, quality)
     image.delete()
+    if (!encoded) {
+      console.error(`encodeToBytes returned null for format=${options.format} quality=${quality}`)
+    }
     return encoded ? new Uint8Array(encoded) : null
   } finally {
     surface.delete()

src/stores/editor.ts

@@ -620,7 +620,10 @@ export function createEditorStore() {
   async function exportSelection(scale: number, format: ExportFormat) {
     const ids = [...state.selectedIds]
     const data = renderExportImage(ids, scale, format)
-    if (!data) return
+    if (!data) {
+      console.error(`Export failed: renderExportImage returned null for format=${format} scale=${scale}`)
+      return
+    }
 
     const node = ids.length === 1 ? graph.getNode(ids[0]) : undefined
     const baseName = node?.name ?? 'Export'

vite.config.ts

@@ -21,7 +21,7 @@ export default defineConfig(async () => ({
     {
       name: 'copy-canvaskit-wasm',
       buildStart() {
-        const src = 'node_modules/canvaskit-wasm/bin/canvaskit.wasm'
+        const src = 'node_modules/canvaskit-wasm/bin/full/canvaskit.wasm'
         const dest = 'public/canvaskit.wasm'
         if (existsSync(src) && !existsSync(dest)) {
           copyFileSync(src, dest)