@@ -53,7 +53,7 @@ async function resolvePreviewItem(
   }
   if (!("environmentId" in item)) return { source: { ...item, name } };
   // Refresh expired URLs before handing them to Quick Look or ACTION_VIEW, which retain them.
-  const url = await refreshAssetUrl(item.environmentId, item.resource)
+  const url = await refreshAssetUrl(item.environmentId, item.resource, signal)
     .then((value) => {
       if (!value) throw new Error("Reconnect to this environment and try again.");
       return value;
 
@@ -18,7 +18,17 @@ const preparedPdfAtom = Atom.family((uri: string) =>
     // stays interruptible so closing the viewer aborts the download.
     Effect.acquireRelease(
       Effect.tryPromise({
-        try: (signal) => preparePdfPreview(uri, signal),
+        try: (signal) => {
+          const prepared = preparePdfPreview(uri, signal);
+          // An interrupt can land after the copy exists but before acquireRelease owns it.
+          signal.addEventListener("abort", () => {
+            void prepared.then(
+              (file) => file?.dispose(),
+              () => undefined,
+            );
+          });
+          return prepared;
+        },
         catch: (cause) => (cause instanceof Error ? cause.message : "The PDF could not be loaded."),
       }).pipe(
         Effect.flatMap((file) => (file === null ? Effect.interrupt : Effect.succeed(file))),
Original file line number	Diff line number	Diff line change
`@@ -53,7 +53,7 @@ async function resolvePreviewItem(`
`53`	`53`	`}`
`54`	`54`	`if (!("environmentId" in item)) return { source: { ...item, name } };`
`55`	`55`	`// Refresh expired URLs before handing them to Quick Look or ACTION_VIEW, which retain them.`
`56`		`- const url = await refreshAssetUrl(item.environmentId, item.resource)`
	`56`	`+ const url = await refreshAssetUrl(item.environmentId, item.resource, signal)`
`57`	`57`	`.then((value) => {`
`58`	`58`	`if (!value) throw new Error("Reconnect to this environment and try again.");`
`59`	`59`	`return value;`