Recover failed conversion workers and validate Nitro downloads correctly

src/lib/services/swf/conversion-pool.ts

@@ -154,8 +154,10 @@ export async function convertSwfToNitroAsync(
 	buffer: Buffer,
 	classname: string,
 ): Promise<ConversionResult> {
-	const res = await run({ type: "convert", buffer, classname });
-	if (res.ok && res.result) return res.result;
+	const res = await run({ type: "convert", buffer, classname }).catch(
+		() => null,
+	);
+	if (res?.ok && res.result) return res.result;
 	// Worker failed for this item — fall back to the main thread.
 	return convertSwfToNitro(buffer, classname);
 }
@@ -164,7 +166,7 @@ export async function extractIconFromSwfAsync(
 	buffer: Buffer,
 	classname: string,
 ): Promise<Buffer | null> {
-	const res = await run({ type: "icon", buffer, classname });
-	if (res.ok) return res.icon ?? null;
+	const res = await run({ type: "icon", buffer, classname }).catch(() => null);
+	if (res?.ok) return res.icon ?? null;
 	return extractIconFromSwf(buffer, classname);
 }