From 04653e2cae08092cae8d6c20d040db70ba6d54ec Mon Sep 17 00:00:00 2001
From: Isaac S <philosophercode@users.noreply.github.com>
Date: Fri, 29 May 2026 15:21:02 -0400
Subject: [PATCH] Strip leaked <cite> tags from chat output
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The assistant grounds answers with inline source markup like
<cite index="1-9">…</cite>. react-markdown has no raw-HTML plugin, so these
tags rendered as literal text in the chat. Strip the tags (keeping the cited
prose) before rendering assistant messages.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
---
 v5/src/components/ChatFab.tsx | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/v5/src/components/ChatFab.tsx b/v5/src/components/ChatFab.tsx
index 18de337..f650ff1 100644
--- a/v5/src/components/ChatFab.tsx
+++ b/v5/src/components/ChatFab.tsx
@@ -28,6 +28,14 @@ function toolStatusLabel(partType: string, t: ChatT): string {
   return t("working");
 }
 
+// The assistant can wrap grounded text in inline source markup such as
+// <cite index="1-9">…</cite>. react-markdown has no raw-HTML plugin, so those
+// tags would render as literal text. Strip the tags while keeping the cited
+// prose intact.
+function stripCitations(text: string): string {
+  return text.replace(/<cite\b[^>]*>/gi, "").replace(/<\/cite>/gi, "");
+}
+
 function Icon({
   name,
 }: {
@@ -419,7 +427,7 @@ export function ChatFab() {
                                 remarkPlugins={[remarkGfm]}
                                 components={markdownComponents}
                               >
-                                {part.text}
+                                {stripCitations(part.text)}
                               </ReactMarkdown>
                             </div>
                           ) : (