docs: update Cubence promotional link with signup referral code

README.en.md

@@ -25,13 +25,13 @@ Claude Code Hub combines Next.js 15, Hono, PostgreSQL, and Redis to deliver a Cl
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-<a href="https://cubence.com?source=cch">
+<a href="https://cubence.com/signup?code=SCE7Y3QR&source=cch">
 <img src="public/readme/cubence.jpg" alt="Cubence Logo" width="180"/>
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-<b>💎 Special Offer</b>: <a href="https://cubence.com?source=cch">Cubence</a> is a stable and efficient AI service transit platform, providing transit services for AI tools such as Claude Code, Codex, Gemini, with good stability and cost-effectiveness.<br/>
-Cubence offers special discount coupons for users of CCH: when purchasing with the coupon <code>DING113CCH</code>, you can enjoy a <b>10% discount</b> → <a href="https://cubence.com?source=cch">Visit Now</a>
+<b>💎 Special Offer</b>: <a href="https://cubence.com/signup?code=SCE7Y3QR&source=cch">Cubence</a> is a stable and efficient AI service transit platform, providing transit services for AI tools such as Claude Code, Codex, Gemini, with good stability and cost-effectiveness.<br/>
+Cubence offers special discount coupons for users of CCH: when purchasing with the coupon <code>DING113CCH</code>, you can enjoy a <b>10% discount</b> → <a href="https://cubence.com/signup?code=SCE7Y3QR&source=cch">Visit Now</a>
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README.md

@@ -25,13 +25,13 @@ Claude Code Hub 通过 Next.js 15 + Hono + PostgreSQL + Redis 组合，实现 Cl
 <table>
 <tr>
 <td width="200">
-<a href="https://cubence.com?source=cch">
+<a href="https://cubence.com/signup?code=SCE7Y3QR&source=cch">
 <img src="public/readme/cubence.jpg" alt="Cubence Logo" width="180"/>
 </a>
 </td>
 <td>
-<b>💎 特别优惠</b>：<a href="https://cubence.com?source=cch">Cubence</a> 一家稳定高效的AI服务中转平台，为 Claude Code、Codex、Gemini 等AI工具提供中转服务，有着不错的稳定性和性价比。<br/>
-Cubence 为 CCH 的使用用户提供了特别的优惠折扣：在购买时使用优惠券 <code>DING113CCH</code>，可享受 <b>10% 优惠折扣</b> → <a href="https://cubence.com?source=cch">立即访问</a>
+<b>💎 特别优惠</b>：<a href="https://cubence.com/signup?code=SCE7Y3QR&source=cch">Cubence</a> 一家稳定高效的AI服务中转平台，为 Claude Code、Codex、Gemini 等AI工具提供中转服务，有着不错的稳定性和性价比。<br/>
+Cubence 为 CCH 的使用用户提供了特别的优惠折扣：在购买时使用优惠券 <code>DING113CCH</code>，可享受 <b>10% 优惠折扣</b> → <a href="https://cubence.com/signup?code=SCE7Y3QR&source=cch">立即访问</a>
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 </table>