fix(session-end): remove .unref() so process force-exits after 1500ms

plugin/scripts/session-end.mjs

@@ -51,7 +51,7 @@ async function main() {
 		headers: authHeaders(),
 		signal: AbortSignal.timeout(3e4)
 	}).catch(() => {});
-	setTimeout(() => process.exit(0), 1500).unref();
+	setTimeout(() => process.exit(0), 1500);
 }
 main();
 

src/hooks/session-end.ts

@@ -63,7 +63,11 @@ async function main() {
     }).catch(() => {});
   }
 
-  setTimeout(() => process.exit(0), 1500).unref();
+  // Force-exit after 1500ms regardless of in-flight fetches. Without this,
+  // .unref() makes the timer passive and pending fetch() calls keep the event
+  // loop alive until their AbortSignal timeouts fire (up to 120s), causing
+  // Claude Code to cancel the hook with "Hook cancelled".
+  setTimeout(() => process.exit(0), 1500);
 }
 
 main();