feat(housekeeping): integrate studio operations

src/lib/services/effect-import.ts

@@ -76,8 +76,10 @@ export async function importSingleEffect(params: {
 	type: string;
 	revision: number;
 	onProgress?: (status: string) => void;
+	signal?: AbortSignal;
 }): Promise<ImportEffectResult> {
-	const { id, lib, type, revision, onProgress } = params;
+	const { id, lib, type, revision, onProgress, signal } = params;
+	signal?.throwIfAborted();
 	const warnings: string[] = [];
 	await ensureEffectDirs();
 
@@ -100,7 +102,10 @@ export async function importSingleEffect(params: {
 			error: `Could not resolve SWF URL: ${(err as Error).message}`,
 		};
 	}
-	const dl = await downloadFile(swfUrl, swfPath, { validate: "swf" });
+	const dl = await downloadFile(swfUrl, swfPath, {
+		validate: "swf",
+		signal,
+	});
 	if (!dl.ok)
 		return {
 			ok: false,
@@ -111,6 +116,7 @@ export async function importSingleEffect(params: {
 
 	// Convert SWF → Nitro
 	onProgress?.("converting");
+	signal?.throwIfAborted();
 	try {
 		const swfBuffer = await fs.readFile(/*turbopackIgnore: true*/ swfPath);
 		const result = convertSwfToNitro(swfBuffer, lib);
@@ -127,6 +133,7 @@ export async function importSingleEffect(params: {
 
 	// Merge EffectMap.json (last step — no orphan entry if anything above failed)
 	onProgress?.("writing_map");
+	signal?.throwIfAborted();
 	try {
 		const entry: EffectMapEntry = { id, lib, type, revision };
 		await mergeEffect(entry);