fix(ci): stop writing dialog close refs during render

eslint-plugin-react-hooks forbids updating ref.current in render, which failed staging lint after the compact rectification board landed.

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/components/rectification-board.tsx

@@ -208,8 +208,6 @@ export function RectificationBoard({
   onClose: () => void;
 }>) {
   const dialogRef = useRef<HTMLDialogElement>(null);
-  const onCloseRef = useRef(onClose);
-  onCloseRef.current = onClose;
   const body = (
     <RectificationBoardBody
       result={result}
@@ -235,10 +233,10 @@ export function RectificationBoard({
     if (!compact) return;
     const node = dialogRef.current;
     if (!node) return;
-    const handleClose = () => onCloseRef.current();
+    const handleClose = () => onClose();
     node.addEventListener("close", handleClose);
     return () => node.removeEventListener("close", handleClose);
-  }, [compact]);
+  }, [compact, onClose]);
 
   if (compact) {
     return (