From 4b6e1e440e966d2b91c83a12359f7db04e934f8f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=81=B5=E8=B6=8A=E7=BE=BD=E6=AF=9B?=
 <97326386+Icather@users.noreply.github.com>
Date: Wed, 17 Jun 2026 17:51:57 +0800
Subject: [PATCH] fix(web): strip ANSI erase codes and blank-line bursts from
 PTY stream

Ink two-pass virtual scrolling during session resume floods the
PTY output with \x1b[K (erase-line), \x1b[NX (erase-char), and
thousand-line \n bursts. In the Dashboard INLINE mode, xterm
main scrollback buffer absorbs these as blank rows.

Filter all three in ws.onmessage before they reach xterm.

Refs #47313.
---
 web/src/pages/ChatPage.tsx | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/web/src/pages/ChatPage.tsx b/web/src/pages/ChatPage.tsx
index 81b6b30751d..ee1c8944655 100644
--- a/web/src/pages/ChatPage.tsx
+++ b/web/src/pages/ChatPage.tsx
@@ -990,11 +990,17 @@ export default function ChatPage({ isActive = true }: { isActive?: boolean }) {
     };
 
     ws.onmessage = (ev) => {
+      let text: string;
       if (typeof ev.data === "string") {
-        term.write(ev.data);
+        text = ev.data;
       } else {
-        term.write(new Uint8Array(ev.data as ArrayBuffer));
+        text = new TextDecoder().decode(new Uint8Array(ev.data as ArrayBuffer));
       }
+      term.write(
+        text.replace(/\n{3,}/g, "\n\n")
+            .replace(/\x1b\[\d*K/g, "")
+            .replace(/\x1b\[\d*X/g, "")
+      );
     };
 
     ws.onclose = (ev) => {