chore(release): update social links and v2.2.3

- Update X/Discord links in docs and frontend dist
- Dashboard: report all-time total trades
- Notifications: add unread-count endpoint for badge

Made-with: Cursor

docs/README_CN.md

@@ -36,8 +36,8 @@
 
   <p>
     <a href="https://t.me/quantdinger"><img src="https://img.shields.io/badge/Telegram-群组-26A5E4?style=for-the-badge&logo=telegram" alt="Telegram"></a>
-    <a href="https://discord.gg/tyx5B6TChr"><img src="https://img.shields.io/badge/Discord-服务器-5865F2?style=for-the-badge&logo=discord" alt="Discord"></a>
-    <a href="https://x.com/HenryCryption"><img src="https://img.shields.io/badge/X-关注-000000?style=for-the-badge&logo=x" alt="X"></a>
+    <a href="https://discord.com/invite/tyx5B6TChr"><img src="https://img.shields.io/badge/Discord-服务器-5865F2?style=for-the-badge&logo=discord" alt="Discord"></a>
+    <a href="https://x.com/quantdinger_en"><img src="https://img.shields.io/badge/X-关注-000000?style=for-the-badge&logo=x" alt="X"></a>
   </p>
 
   <sub>🇺🇸 English · 🇨🇳 简体中文 · 🇹🇼 繁體中文 · 🇯🇵 日本語 · 🇰🇷 한국어 · 🇩🇪 Deutsch · 🇫🇷 Français · 🇹🇭 ไทย · 🇻🇳 Tiếng Việt · 🇸🇦 العربية</sub>
@@ -506,7 +506,7 @@ QuantDinger/
 
 <p>
   <a href="https://t.me/quantdinger"><img src="https://img.shields.io/badge/Telegram-群组-26A5E4?style=for-the-badge&logo=telegram" alt="Telegram"></a>
-  <a href="https://discord.gg/tyx5B6TChr"><img src="https://img.shields.io/badge/Discord-服务器-5865F2?style=for-the-badge&logo=discord" alt="Discord"></a>
+  <a href="https://discord.com/invite/tyx5B6TChr"><img src="https://img.shields.io/badge/Discord-服务器-5865F2?style=for-the-badge&logo=discord" alt="Discord"></a>
   <a href="https://youtube.com/@quantdinger"><img src="https://img.shields.io/badge/YouTube-频道-FF0000?style=for-the-badge&logo=youtube" alt="YouTube"></a>
 </p>