Make 社群/community group clickable to open WeChat QR modal

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

Author: sanbuphy

src/App.tsx

@@ -1431,7 +1431,12 @@ export default function App() {
             </div>
             <div>
               <h4 className="text-[11px] font-bold uppercase tracking-[0.2em] text-zinc-400 mb-6 font-mono">Collaboration</h4>
-              <p className="text-base text-zinc-500 font-light leading-relaxed">{lang === "EN" ? "We are actively seeking collaborators who share our interest in foundational tutorials on LLM and Agent technologies, as well as those interested in co-developing applied Agent projects — spanning toolchains, frameworks, and end-user applications. If you are passionate about building the next generation of intelligent agent systems, we welcome you to join our community group and connect with us." : "我们正在积极寻求对 LLM 与 Agent 基础教程感兴趣的合作伙伴，同时欢迎有志于共同产出 Agent 应用项目（涵盖工具链、框架及端到端应用）的研究者与工程师加入协作。如果您对构建下一代智能体系统充满热情，欢迎加入我们的社群与我们取得联系。"}</p>
+              <p className="text-base text-zinc-500 font-light leading-relaxed">
+                {lang === "EN"
+                  ? <>We are actively seeking collaborators who share our interest in foundational tutorials on LLM and Agent technologies, as well as those interested in co-developing applied Agent projects — spanning toolchains, frameworks, and end-user applications. If you are passionate about building the next generation of intelligent agent systems, we welcome you to join our <button onClick={openWechatQr} className="text-violet-600 hover:text-violet-800 underline underline-offset-2 transition-colors">community group</button> and connect with us.</>
+                  : <>我们正在积极寻求对 LLM 与 Agent 基础教程感兴趣的合作伙伴，同时欢迎有志于共同产出 Agent 应用项目（涵盖工具链、框架及端到端应用）的研究者与工程师加入协作。如果您对构建下一代智能体系统充满热情，欢迎加入我们的<button onClick={openWechatQr} className="text-violet-600 hover:text-violet-800 underline underline-offset-2 transition-colors">社群</button>与我们取得联系。</>
+                }
+              </p>
             </div>
             <div>
               <h4 className="text-[11px] font-bold uppercase tracking-[0.2em] text-zinc-400 mb-6 font-mono">About</h4>