fix: convert local emoji paths to Tauri asset URLs

Use convertFileSrc from @tauri-apps/api/core to convert local file
paths to asset:// URLs that work in Tauri's WebView.

Author: afonsojramos

src/utils/emojis.ts

@@ -1,14 +1,27 @@
 import twemoji, { type TwemojiOptions } from '@discordapp/twemoji';
 
+import { isTauriEnvironment } from './environment';
+
 const EMOJI_FORMAT = 'svg';
+const CDN_BASE = 'https://cdn.jsdelivr.net/gh/jdecked/twemoji@latest/assets/';
 
 export async function convertTextToEmojiImgHtml(text: string): Promise<string> {
+  if (!isTauriEnvironment()) {
+    // Browser fallback - use CDN
+    return twemoji.parse(text, {
+      folder: EMOJI_FORMAT,
+      base: CDN_BASE,
+    });
+  }
+
+  // In Tauri mode, convert local file paths to asset:// URLs
+  const { convertFileSrc } = await import('@tauri-apps/api/core');
   const directory = await window.gitify.twemojiDirectory();
 
   return twemoji.parse(text, {
-    folder: EMOJI_FORMAT,
     callback: (icon: string, _options: TwemojiOptions) => {
-      return `${directory}/${icon}.${EMOJI_FORMAT}`;
+      const filePath = `${directory}/${icon}.${EMOJI_FORMAT}`;
+      return convertFileSrc(filePath);
     },
   });
 }