Docs(readme): add a Contributing section and open the door to README translations

The READMEs — the project's highest-traffic pages — carried no
contribution invitation. All four gain a short Contributing section
pointing at the good-first-issue label and CONTRIBUTING.md, which now
also documents community-maintained README translations (English stays
canonical) as a starter area distinct from UI translations.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

CONTRIBUTING.md

@@ -79,9 +79,17 @@ runnable directly as `pnpm fetch-favicons`). Only if auto-fetch can't find a usa
 PNG do you hand-source one (on macOS, `sips` handles ICO→PNG). Remember to commit
 the PNGs with your change — CI stays offline and only checks they exist.
 
-**Translations** — improvements to the existing `en` / `zh` / `fr` / `ru` packs are
-welcome. Adding a whole new locale is heavier than it looks (every future copy change
-must land in it too), so please open an issue to discuss before starting one.
+**README translations** — beyond the four READMEs we maintain (`en` / `zh` / `fr` /
+`ru`), community-maintained translations in any language are welcome. Create
+`README_<LANG>.md` from the English [README.md](README.md) (the canonical source),
+open it with a one-line "community-maintained translation — English is canonical"
+note in your language, and add your language to the switcher row near the top of the
+existing READMEs. Keep code blocks, URLs, and badges unchanged. Check open issues
+for requested languages before starting.
+
+**UI translations** — improvements to the existing `en` / `zh` / `fr` / `ru` packs are
+welcome. Adding a whole new UI locale is heavier than it looks (every future copy
+change must land in it too), so please open an issue to discuss before starting one.
 
 ## Bugs & feature requests
 

README.md

@@ -99,6 +99,13 @@ Full guides live in the MyIP Docs Center: **[docs.ipcheck.ing](https://docs.ipch
 * [Developer Guide](https://docs.ipcheck.ing/developer) — deployment, configuration, architecture, and contributing
 * [Knowledge Base](https://docs.ipcheck.ing/knowledge-base) — how to use every tool, step-by-step network diagnosis, and networking concepts
 
+## 🤝 Contributing
+
+Contributions are welcome! We keep a curated set of beginner-friendly tasks — each with exact file paths, acceptance criteria, and tests that guide you to a green build:
+
+* 🏷️ [Good first issues](https://github.com/jason5ng32/MyIP/labels/good%20first%20issue) — add a DNS resolver from your country, add curated site lists, translate the README into your language, polish translations, and more
+* 📄 [CONTRIBUTING.md](CONTRIBUTING.md) — setup, conventions, and how PRs flow (target the `dev` branch)
+
 ## ⚙️ Configuration
 
 Two settings matter before anything else:

README_FR.md

@@ -99,6 +99,13 @@ Les guides complets se trouvent dans le centre de documentation MyIP : **[docs.i
 * [Guide du développeur](https://docs.ipcheck.ing/developer/fr) — déploiement, configuration, architecture et contribution
 * [Base de connaissances](https://docs.ipcheck.ing/knowledge-base/fr) — utilisation de chaque outil, diagnostic réseau pas à pas, concepts réseau
 
+## 🤝 Contribuer
+
+Les contributions sont les bienvenues ! Nous maintenons une sélection de tâches adaptées aux débutants — chacune avec les fichiers précis, les critères d'acceptation et des tests pour vous guider :
+
+* 🏷️ [Good first issues](https://github.com/jason5ng32/MyIP/labels/good%20first%20issue) — ajouter un résolveur DNS de votre pays, enrichir les listes de sites, traduire le README dans votre langue, améliorer les traductions…
+* 📄 [CONTRIBUTING.md](CONTRIBUTING.md) — installation, conventions et flux des PR (ciblez la branche `dev`)
+
 ## ⚙️ Configuration
 
 Deux réglages comptent avant tout :

README_RU.md

@@ -99,6 +99,13 @@ docker run -d -p 18966:18966 --name myip --restart always jason5ng32/myip:latest
 * [Руководство разработчика](https://docs.ipcheck.ing/developer/ru) — развёртывание, настройка, архитектура и участие в разработке
 * [База знаний](https://docs.ipcheck.ing/knowledge-base/ru) — как пользоваться каждым инструментом, пошаговая диагностика сети, сетевые концепции
 
+## 🤝 Участие в проекте
+
+Мы рады вашему участию! У нас есть подборка задач для новичков — с точными путями к файлам, критериями приёмки и тестами, которые ведут вас к зелёной сборке:
+
+* 🏷️ [Good first issues](https://github.com/jason5ng32/MyIP/labels/good%20first%20issue) — добавьте DNS-резолвер своей страны, расширьте подборки сайтов, переведите README на свой язык, улучшите переводы
+* 📄 [CONTRIBUTING.md](CONTRIBUTING.md) — настройка окружения, соглашения и процесс PR (PR направляются в ветку `dev`)
+
 ## ⚙️ Конфигурация
 
 Прежде всего важны две настройки:

README_ZH.md

@@ -99,6 +99,13 @@ docker run -d -p 18966:18966 --name myip --restart always jason5ng32/myip:latest
 * [开发者指南](https://docs.ipcheck.ing/developer/zh) —— 部署、配置、架构说明与参与贡献
 * [知识库](https://docs.ipcheck.ing/knowledge-base/zh) —— 每个工具的使用说明、网络问题排查指南、网络概念科普
 
+## 🤝 参与贡献
+
+欢迎参与贡献！我们维护着一批对新手友好的任务，每条都写明了具体文件、验收标准，并有测试引导你完成：
+
+* 🏷️ [Good first issues](https://github.com/jason5ng32/MyIP/labels/good%20first%20issue) —— 添加你所在国家的 DNS 解析服务、添加精选网站列表、把 README 翻译成你的语言、润色翻译等
+* 📄 [CONTRIBUTING.md](CONTRIBUTING.md) —— 环境搭建、开发约定与 PR 流程（请将 PR 提交到 `dev` 分支）
+
 ## ⚙️ 配置
 
 开始之前，有两项配置最重要：