From a66648cc2fd1eca003e8afcd6bc19a6305700927 Mon Sep 17 00:00:00 2001
From: Innei <tukon479@gmail.com>
Date: Wed, 22 Apr 2026 19:39:49 +0800
Subject: [PATCH] =?UTF-8?q?=F0=9F=90=9B=20fix:=20add=20mermaid=20to=20code?=
 =?UTF-8?q?=20block=20language=20list?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

The codemirror-block plugin's MODES array was missing "mermaid", causing
mermaid code blocks to be converted to "plain" when loading a message for
editing. After saving, the block renders as plaintext instead of a diagram.

Closes lobehub/lobehub#12307
---
 src/plugins/codemirror-block/lib/mode.ts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/plugins/codemirror-block/lib/mode.ts b/src/plugins/codemirror-block/lib/mode.ts
index 5787e81d..a627aa9f 100644
--- a/src/plugins/codemirror-block/lib/mode.ts
+++ b/src/plugins/codemirror-block/lib/mode.ts
@@ -62,6 +62,12 @@ export const MODES = [
     syntax: 'markdown',
     value: 'markdown',
   },
+  {
+    ext: ['mmd'],
+    name: 'Mermaid',
+    syntax: 'simplemode',
+    value: 'mermaid',
+  },
   { name: 'MATLAB', syntax: 'octave', value: 'matlab' },
   { ext: ['conf'], name: 'Nginx', syntax: 'nginx', value: 'nginx' },
   {