First commit

frontend/app/pages/wiki/[slug]/index.vue

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+<script setup lang="ts">
+/* The article route is a thin host for the book that ArticleBookStack draws.
+   The open-article middleware has already laid the article on the library's
+   shelf — that is what the page in view is made of, and what the stack of
+   open pages is filed under — so all that is left to do here is speak for the
+   URL: the title, and the visitor's "recently viewed" line.
+   When nothing lives at the address, this is what says so, over the top of
+   whatever else is open. */
+definePageMeta({ middleware: 'open-article' })
+
+const route = useRoute()
+const slug = computed(() => String(route.params.slug))
+
+const { t } = useI18n()
+const { th } = useAppLocale()
+const { get, unreadable } = useArticleLibrary()
+const article = computed(() => get(slug.value))
+
+const { record } = useRecentlyViewed()
+watch(
+  article,
+  (a) => {
+    if (import.meta.client && a?.slug && a?.title) record({ slug: a.slug, title: a.title })
+  },
+  { immediate: true }
+)
+
+useSeoMeta({
+  title: () => article.value?.title ?? t('card.kickerArticle'),
+})
+
+/* what the shelf could not bring in, the API said why */
+const missingStatus = computed(() => (article.value ? 0 : unreadable.value[slug.value] ?? 0))
+</script>
+
+<template>
+  <div class="reader-host">
+    <div v-if="!article" class="reader-note">
+      <div class="empty" style="padding-top: 64px">
+        <template v-if="missingStatus === 404">
+          <div class="glyph">∄</div>
+          <h3>{{ t('reader.notFoundTitle') }}</h3>
+          <p v-html="th('reader.notFoundText', { path: `/wiki/${slug}` })"></p>
+          <NuxtLink to="/new" class="btn btn-primary">{{ t('reader.writeTopic') }}</NuxtLink>
+        </template>
+        <template v-else>
+          <div class="glyph">!</div>
+          <h3>{{ t('reader.loadFailTitle') }}</h3>
+          <p v-html="t('common.apiShort')"></p>
+          <NuxtLink to="/" class="btn btn-ghost">{{ t('common.backHome') }}</NuxtLink>
+        </template>
+      </div>
+    </div>
+  </div>
+</template>