Fix preset value (#933)

src/shared/parse_mention_apps.ts

@@ -1,11 +1,13 @@
+export const MENTION_REGEX = /@app:([a-zA-Z0-9_-]+)/g;
+
 // Helper function to parse app mentions from prompt
 export function parseAppMentions(prompt: string): string[] {
   // Match @app:AppName patterns in the prompt (supports letters, digits, underscores, and hyphens, but NOT spaces)
-  const mentionRegex = /@app:([a-zA-Z0-9_-]+)/g;
+
   const mentions: string[] = [];
   let match;
 
-  while ((match = mentionRegex.exec(prompt)) !== null) {
+  while ((match = MENTION_REGEX.exec(prompt)) !== null) {
     mentions.push(match[1]);
   }