feat: add experimental notice to contribute section and footer credits

Author: yhk1038

docusaurus.config.ts

@@ -199,7 +199,7 @@ const config: Config = {
           ],
         },
       ],
-      copyright: `Copyright © ${new Date().getFullYear()} <a href="https://github.com/yonghyun421" target="_blank" rel="noopener noreferrer">Fred</a> & <a href="https://github.com/type-ruby" target="_blank" rel="noopener noreferrer">T-Ruby</a>.`,
+      copyright: `Copyright © ${new Date().getFullYear()} <a href="https://github.com/yhk1038" target="_blank" rel="noopener noreferrer">Fred</a> & <a href="https://github.com/type-ruby" target="_blank" rel="noopener noreferrer">T-Ruby</a>. Built with <a href="https://docusaurus.io" target="_blank" rel="noopener noreferrer">Docusaurus</a>.`,
     },
     prism: {
       theme: prismThemes.github,

i18n/ja/code.json

@@ -411,6 +411,14 @@
     "message": "T-Rubyはオープンソースプロジェクトです。あなたの参加が大きな力になります。",
     "description": "Contribute section subtitle"
   },
+  "homepage.contribute.experimental": {
+    "message": "まだ実験段階です。コアコンパイラは動作しますが、改善すべき点がたくさんあります。",
+    "description": "Experimental stage notice"
+  },
+  "homepage.contribute.feedback": {
+    "message": "フィードバックや提案はいつでも歓迎します！",
+    "description": "Feedback welcome notice"
+  },
   "homepage.contribute.star.title": {
     "message": "GitHubでStarする",
     "description": "Star card title"

i18n/ko/code.json

@@ -411,6 +411,14 @@
     "message": "T-Ruby는 오픈소스 프로젝트입니다. 여러분의 참여가 큰 힘이 됩니다.",
     "description": "Contribute section subtitle"
   },
+  "homepage.contribute.experimental": {
+    "message": "아직 실험 단계입니다. 핵심 컴파일러는 작동하지만, 개선할 부분이 많습니다.",
+    "description": "Experimental stage notice"
+  },
+  "homepage.contribute.feedback": {
+    "message": "피드백과 제안은 언제든 환영합니다!",
+    "description": "Feedback welcome notice"
+  },
   "homepage.contribute.star.title": {
     "message": "GitHub에서 Star 주기",
     "description": "Star card title"

src/pages/index.tsx

@@ -714,6 +714,14 @@ function ContributeSection() {
           <Translate id="homepage.contribute.subtitle">
             T-Ruby is an open source project. Your contribution makes a difference.
           </Translate>
+          <br />
+          <Translate id="homepage.contribute.experimental">
+            It's still experimental. The core compiler works, but there's much to improve.
+          </Translate>
+          <br />
+          <Translate id="homepage.contribute.feedback">
+            Feedback and suggestions are always welcome!
+          </Translate>
         </p>
 
         <div className={styles.contributeGrid}>