docs: rewrite Why GMGN Skills intro tagline (EN + ZH)

Emphasizes multi-chain Meme trading, 100+ data dimensions,
and 24/7 automated trading agent use case.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Readme.md

@@ -16,7 +16,9 @@ With GMGN Agent Skills, you can use AI agents to query real-time trending token
 
 ## Why GMGN Skills
 
-> Purpose-built for on-chain alpha. GMGN Skills gives AI agents direct access to the same professional data and trading infrastructure used by top traders on GMGN.
+> Built for high-speed multi-chain Meme token trading. gmgn-skills gives AI agents direct access to GMGN's real-time trending tokens, newly created tokens, and professional on-chain data — including Smart Money, KOL, rat trader, and bundler analytics.
+>
+> With 100+ professional data dimensions, you can turn your AI agent into a 24/7 automated trading tool — monitoring multi-chain token momentum in real time, placing orders instantly, and managing exits with take-profit / stop-loss, all on autopilot.
 
 ### 1. Real-time on-chain data — faster
 

Readme.zh.md

@@ -16,7 +16,9 @@
 
 ## 为什么选择 GMGN Skills
 
-> 专为链上 Alpha 而生。GMGN Skills 让 AI Agent 直接调用 GMGN 顶级交易者使用的同一套专业数据与交易基础设施。
+> 专为多链 Meme 代币高速交易而生。gmgn-skills 让 AI Agent 直接调用 GMGN 的实时热门代币、新创建代币，以及聪明钱、KOL、老鼠仓等专业顶级交易数据。
+>
+> 凭借 100+ 专业数据分析维度，你可以将自己的 AI Agent 打造成 7×24 小时全天候托管的交易工具——实时监控多链代币热点、实时下单、实时止盈止损，实现全自动化交易。
 
 ### 1. 链上实时数据，更快