From 91d8650748c68a9ff75073ad7251788e4ac4cb54 Mon Sep 17 00:00:00 2001
From: Claude <noreply@anthropic.com>
Date: Mon, 12 Oct 2026 02:31:38 +0000
Subject: [PATCH] Stop text selection while dragging the expanded Mermaid
 viewer

Dragging to pan started a native text selection across the diagram's
labels. The pan surface is now user-select: none.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Y8zZi9uphvmprNJWq9UTWm
---
 src/features/markdown/render/diagram/PanZoom.tsx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/features/markdown/render/diagram/PanZoom.tsx b/src/features/markdown/render/diagram/PanZoom.tsx
index a9d7fe0..d075c92 100644
--- a/src/features/markdown/render/diagram/PanZoom.tsx
+++ b/src/features/markdown/render/diagram/PanZoom.tsx
@@ -51,7 +51,7 @@ export function PanZoom({ svg }: { svg: string }) {
     <div className="relative h-full overflow-hidden">
       <div
         ref={surface}
-        className="relative h-full cursor-grab touch-none desk-grid active:cursor-grabbing"
+        className="relative h-full cursor-grab touch-none desk-grid select-none active:cursor-grabbing"
         onWheel={onWheel}
         onPointerDown={onPointerDown}
         onPointerMove={onPointerMove}