chore: fix build

Author: FireAndIceFrog

string-art-demo/src/features/shared/redux/stringArtSlice.ts

@@ -31,7 +31,7 @@ const initialState: StringArtState = {
     num_nails: 360,
     image_size: 500,
     preserve_eyes: true,
-    preserve_negative_space: false,
+    preserve_negative_space: true,
     negative_space_penalty: 5,
     negative_space_threshold: 0.5,
     max_lines: 2000,

string-art-demo/src/features/shared/workers/stringArtWorker.ts

@@ -7,9 +7,16 @@ interface WorkerMessage {
 }
 
 // Initialize the WASM module
-await init();
+let inited = false;
+init().then(() => {
+  inited = true;
+});
 
 self.onmessage = async (event: MessageEvent<WorkerMessage>) => {
+  if (!inited) {
+    throw new Error("WASM module not initialized");
+  }
+  
   const { imageData, config } = event.data as { imageData: Uint8Array, config: StringArtConfig};
 
   try {