docs: add donation wallet address to READMEs

README.md

@@ -40,6 +40,12 @@
     <a href="https://discord.gg/vuazbGkqQE">Discord</a>
 </p>
 
+> ☕ **Support This Project**
+>
+> This SDK is completely free and open source. However, maintaining and continuously updating it requires significant AI computing resources and token consumption. If this SDK helps with your development, consider making a monthly SOL donation — any amount is appreciated and helps keep this project alive!
+>
+> **Donation Wallet:** `6oW7AXz1yRb57pYSxysuXnMs2aR1ha5rzGzReZ1MjPV8`
+
 ---
 
 ## Table of Contents

README_CN.md

@@ -39,6 +39,12 @@
     <a href="https://t.me/fnzero_group">Telegram</a>
 </p>
 
+> ☕ **支持本项目**
+>
+> 本 SDK 完全免费且开源。但维护和持续更新需要消耗大量 AI 算力与 Token。如果这个 SDK 对您的开发有帮助，欢迎每月捐赠任意数量的 SOL，您的支持将帮助这个项目持续运行！
+>
+> **捐赠钱包：** `6oW7AXz1yRb57pYSxysuXnMs2aR1ha5rzGzReZ1MjPV8`
+
 ---
 
 ## 目录