feat(housekeeping): integrate studio operations

src/lib/services/import/core/download.ts

@@ -22,9 +22,11 @@ export async function tryDownloadCandidates(
 	urls: string[],
 	destPath: string,
 	kind: "swf" | "png",
+	signal?: AbortSignal,
 ): Promise<boolean> {
 	for (const url of urls) {
-		const res = await downloadFile(url, destPath, { validate: kind });
+		signal?.throwIfAborted();
+		const res = await downloadFile(url, destPath, { validate: kind, signal });
 		if (res.ok) return true;
 	}
 	return false;
@@ -33,18 +35,26 @@ export async function tryDownloadCandidates(
 export async function downloadFile(
 	url: string,
 	destPath: string,
-	options?: { maxRetries?: number; validate?: "swf" | "png" },
+	options?: {
+		maxRetries?: number;
+		validate?: "swf" | "png";
+		signal?: AbortSignal;
+	},
 ): Promise<{ ok: boolean; size: number }> {
 	const maxRetries = options?.maxRetries ?? 3;
 	const baseDelay = 1000;
 
 	for (let attempt = 0; attempt <= maxRetries; attempt++) {
 		try {
+			options?.signal?.throwIfAborted();
 			if (attempt > 0) {
 				await new Promise((r) => setTimeout(r, baseDelay * 2 ** (attempt - 1)));
 			}
+			const timeout = AbortSignal.timeout(15000);
 			const res = await fetch(url, {
-				signal: AbortSignal.timeout(15000),
+				signal: options?.signal
+					? AbortSignal.any([options.signal, timeout])
+					: timeout,
 				headers: browserHeaders("image", {
 					Accept: "image/png,image/*,*/*;q=0.8",
 				}),
@@ -82,6 +92,7 @@ export async function downloadFile(
 			await fs.writeFile(/*turbopackIgnore: true*/ destPath, buffer);
 			return { ok: true, size: buffer.length };
 		} catch (err) {
+			if (options?.signal?.aborted) throw err;
 			if (attempt === maxRetries) {
 				console.warn(
 					`[import-download] Download error ${url}:`,