docs: add deprecation message

Author: kermanx

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,4 @@
+contact_links:
+  - name: Main Repository
+    url: https://github.com/slidevjs/slidev/
+    about: This translation is out of date, This translation is outdated, please do not file an issue here.

.vitepress/theme/components/Layout.vue

@@ -0,0 +1,37 @@
+<script setup lang="ts">
+import DefaultTheme from 'vitepress/theme'
+
+const { Layout } = DefaultTheme
+</script>
+
+<template>
+  <div class="deprecate-banner">
+    Αυτή η μετάφραση δεν συντηρείται πλέον, παρακαλώ επισκεφθείτε
+    <a href="https://sli.dev/">Αγγλικό έγγραφο</a>.
+  </div>
+  <Layout />
+</template>
+
+<style>
+.deprecate-banner {
+  position: fixed;
+  left: 0;
+  right: 0;
+  top: -32px;
+  padding: 4px;
+  min-height: 32px;
+  background-color: rgb(250,200,89);
+  color: black;
+  text-align: center;
+}
+
+.deprecate-banner a {
+  text-decoration: underline;
+  color: rgb(4,96,132);
+}
+
+:root {
+  margin-top: 32px;
+  transform: translateX(0);
+}
+</style>

.vitepress/theme/index.ts

@@ -1,6 +1,7 @@
 import Theme from 'vitepress/theme'
 import type { EnhanceAppContext } from 'vitepress'
 import TwoSlash from '@shikijs/vitepress-twoslash/client'
+import Layout from './components/Layout.vue'
 
 import '@shikijs/vitepress-twoslash/style.css'
 import './styles/vars.css'
@@ -13,4 +14,5 @@ export default {
   enhanceApp({ app }: EnhanceAppContext) {
     app.use(TwoSlash as any)
   },
+  Layout,
 }

README.md

@@ -1,21 +1,29 @@
 # [sli.dev](https://sli.dev)
 
+> [!WARNING]
+>
+> This translation is out-dated and not maintained. Please refer to the [English documentation](https://sli.dev) instead.
+
 Οδηγίες χρήσης για το [Slidev](https://github.com/slidevjs/slidev)
 
-## Μεταφράσεις
-
-| | Repo | Site | Maintainers |
-|---|---|---:|---|
-| English | [docs](https://github.com/slidevjs/docs) | [sli.dev](https://sli.dev) | [@antfu](https://github.com/antfu) |
-| 简体中文 | [docs-cn](https://github.com/slidevjs/docs-cn) | [cn.sli.dev](https://cn.sli.dev) | [@QC-L](https://github.com/QC-L) [@Ivocin](https://github.com/Ivocin) |
-| Français | [docs-fr](https://github.com/slidevjs/docs-fr) | [fr.sli.dev](https://fr.sli.dev) | [@ArthurDanjou](https://github.com/ArthurDanjou) |
-| Español | [docs-es](https://github.com/slidevjs/docs-es) | [es.sli.dev](https://es.sli.dev) | [@owlnai](https://github.com/owlnai) |
-| Русский | [docs-ru](https://github.com/slidevjs/docs-ru) | [ru.sli.dev](https://ru.sli.dev) | [@xesjkeee](https://github.com/xesjkeee) |
-| Việt Nam | [docs-vn](https://github.com/slidevjs/docs-vn) | [vn.sli.dev](https://vn.sli.dev) | [@bongudth](https://github.com/bongudth) |
-| Deutsch | [docs-de](https://github.com/slidevjs/docs-de) | [de.sli.dev](https://de.sli.dev) | [@fabiankachlock](https://github.com/fabiankachlock) |
-| Português (BR) | [docs-br](https://github.com/slidevjs/docs-br) | [br.sli.dev](https://br.sli.dev) | [@luisfelipesdn12](https://github.com/luisfelipesdn12) |
-| Ελληνικά | [docs-el](https://github.com/slidevjs/docs-el) | [el.sli.dev](https://el.sli.dev) | [@GeopJr](https://github.com/GeopJr) |
-| 日本語 | [docs-ja](https://github.com/slidevjs/docs-ja) | [ja.sli.dev](https://ja.sli.dev) | [@IkumaTadokoro](https://github.com/IkumaTadokoro) |
+## All Translations
+
+> [!WARNING]
+>
+> Translations with strikethroughs are no longer maintained. The content is outdated and not encouraged to refer.
+
+|                     | Repo                                           |                             Site | Maintainers                                                           |
+| ------------------- | ---------------------------------------------- | -------------------------------: | --------------------------------------------------------------------- |
+| English             | [docs](https://github.com/slidevjs/docs)       |       [sli.dev](https://sli.dev) | [@antfu](https://github.com/antfu)                                    |
+| 简体中文            | [docs-cn](https://github.com/slidevjs/docs-cn) | [cn.sli.dev](https://cn.sli.dev) | [@QC-L](https://github.com/QC-L) [@Ivocin](https://github.com/Ivocin) |
+| <del>Français       | [docs-fr](https://github.com/slidevjs/docs-fr) | [fr.sli.dev](https://fr.sli.dev) | [@ArthurDanjou](https://github.com/ArthurDanjou)                      |
+| <del>Español        | [docs-es](https://github.com/slidevjs/docs-es) | [es.sli.dev](https://es.sli.dev) | [@owlnai](https://github.com/owlnai)                                  |
+| <del>Русский        | [docs-ru](https://github.com/slidevjs/docs-ru) | [ru.sli.dev](https://ru.sli.dev) | [@xesjkeee](https://github.com/xesjkeee)                              |
+| <del>Việt Nam       | [docs-vn](https://github.com/slidevjs/docs-vn) | [vn.sli.dev](https://vn.sli.dev) | [@bongudth](https://github.com/bongudth)                              |
+| <del>Deutsch        | [docs-de](https://github.com/slidevjs/docs-de) | [de.sli.dev](https://de.sli.dev) | [@fabiankachlock](https://github.com/fabiankachlock)                  |
+| <del>Português (BR) | [docs-br](https://github.com/slidevjs/docs-br) | [br.sli.dev](https://br.sli.dev) | [@luisfelipesdn12](https://github.com/luisfelipesdn12)                |
+| <del>Ελληνικά       | [docs-el](https://github.com/slidevjs/docs-el) | [el.sli.dev](https://el.sli.dev) | [@GeopJr](https://github.com/GeopJr)                                  |
+| <del>日本語         | [docs-ja](https://github.com/slidevjs/docs-el) | [ja.sli.dev](https://ja.sli.dev) | [@IkumaTadokoro](https://github.com/IkumaTadokoro)                    |
 
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