feat(06-03): add blog listing page /blog (hero + grid + empty state)

- Query bilingue queryCollection('blog_fr') / queryCollection('blog_en') literal branches (Phase 5 gotcha)
- .where('draft', '=', false).order('date', 'DESC') with { watch: [locale] }
- Hero pattern /projects.vue: slogan // blog + H1 gradient + 3 stats (articles/tags/languages)
- Grid 1/2/3 responsive cols using BlogCard default variant
- Empty state with UIcon book-open + UButton CTA to /contact
- useSeoMeta minimal (full SEO + JSON-LD reserved for Phase 7)

Requirements: BLOG-02, BLOG-06
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2026-04-22 10:05:16 +02:00
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<script setup lang="ts">
const { t, locale } = useI18n()
const localePath = useLocalePath()
const isFr = computed(() => locale.value === 'fr')
// Query bilingue avec branches littérales (Phase 5 gotcha — Pattern 1 RESEARCH)
// Option watch sur locale pour re-fetch au switch FR/EN (Pitfall 3)
const { data: articles } = await useAsyncData(
`blog-list-${locale.value}`,
() =>
isFr.value
? queryCollection('blog_fr')
.where('draft', '=', false)
.order('date', 'DESC')
.all()
: queryCollection('blog_en')
.where('draft', '=', false)
.order('date', 'DESC')
.all(),
{ watch: [locale] },
)
// Stats computed (UI-SPEC §Hero contract exact — 3 items)
const totalArticles = computed(() => articles.value?.length ?? 0)
const uniqueTags = computed(() => {
const set = new Set<string>()
for (const a of articles.value ?? []) {
for (const tag of a.tags ?? []) set.add(tag)
}
return set.size
})
const totalLanguages = 2 // FR + EN — valeur fixe (UI-SPEC)
// SEO minimal Phase 6 — Phase 7 enrichira avec JSON-LD + og:image par article
useSeoMeta({
title: () => t('blog.title'),
description: () => t('blog.subtitle'),
ogTitle: () => t('blog.title'),
ogDescription: () => t('blog.subtitle'),
ogType: 'website',
})
</script>
<template>
<div>
<!-- Hero (pattern /projects.vue lignes 56-83) -->
<section class="relative pt-20 pb-16 px-4 sm:px-6 lg:px-8 overflow-hidden">
<div class="absolute inset-0 bg-gray-50/80 dark:bg-gray-900/40" aria-hidden="true" />
<div
class="absolute top-0 left-1/2 -translate-x-1/2 w-[800px] h-[400px] bg-brand-500/5 dark:bg-brand-500/8 rounded-full blur-3xl pointer-events-none"
aria-hidden="true"
/>
<div class="relative z-10 max-w-7xl mx-auto text-center">
<span class="font-mono text-sm text-brand-500 dark:text-brand-400 tracking-wider">// blog</span>
<h1
class="text-4xl sm:text-5xl lg:text-6xl font-bold mt-3 mb-5 bg-gradient-to-r from-gray-900 via-gray-800 to-gray-600 dark:from-white dark:via-gray-200 dark:to-gray-500 bg-clip-text text-transparent"
>
{{ t('blog.title') }}
</h1>
<p class="text-lg sm:text-xl text-gray-500 dark:text-gray-400 max-w-2xl mx-auto leading-relaxed">
{{ t('blog.subtitle') }}
</p>
<!-- Stats: articles / tags / languages (3 items + 2 dividers) -->
<div class="flex justify-center gap-8 sm:gap-12 mt-12">
<div class="text-center">
<p
class="text-3xl sm:text-4xl font-black bg-gradient-to-b from-brand-400 to-brand-600 bg-clip-text text-transparent"
>
{{ totalArticles }}
</p>
<p class="text-sm text-gray-500 dark:text-gray-400 mt-2 font-medium">
{{ t('blog.stats.articles') }}
</p>
</div>
<div
class="w-px bg-gradient-to-b from-transparent via-gray-300 dark:via-gray-700 to-transparent"
/>
<div class="text-center">
<p
class="text-3xl sm:text-4xl font-black bg-gradient-to-b from-brand-400 to-brand-600 bg-clip-text text-transparent"
>
{{ uniqueTags }}
</p>
<p class="text-sm text-gray-500 dark:text-gray-400 mt-2 font-medium">
{{ t('blog.stats.tags') }}
</p>
</div>
<div
class="w-px bg-gradient-to-b from-transparent via-gray-300 dark:via-gray-700 to-transparent"
/>
<div class="text-center">
<p
class="text-3xl sm:text-4xl font-black bg-gradient-to-b from-brand-400 to-brand-600 bg-clip-text text-transparent"
>
{{ totalLanguages }}
</p>
<p class="text-sm text-gray-500 dark:text-gray-400 mt-2 font-medium">
{{ t('blog.stats.languages') }}
</p>
</div>
</div>
</div>
</section>
<!-- Grid or Empty state -->
<section class="py-16 md:py-20 px-4 sm:px-6 lg:px-8">
<div class="max-w-7xl mx-auto">
<!-- Grille responsive 1/2/3 cols (D-01) -->
<div
v-if="articles && articles.length > 0"
class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-5 lg:gap-6"
>
<BlogCard
v-for="article in articles"
:key="article.path"
:article="article"
variant="default"
/>
</div>
<!-- Empty state (D-16 + UI-SPEC §Empty state copywriting) -->
<div v-else class="text-center py-32">
<div
class="w-16 h-16 mx-auto mb-6 rounded-2xl bg-gray-100 dark:bg-gray-800/60 border border-gray-200/80 dark:border-gray-700/30 flex items-center justify-center"
>
<UIcon name="i-lucide-book-open" class="text-2xl text-gray-400" />
</div>
<h3 class="text-xl font-bold text-gray-900 dark:text-white mb-3">
{{ t('blog.emptyState.title') }}
</h3>
<p class="text-gray-500 dark:text-gray-400 mb-8 max-w-md mx-auto leading-relaxed">
{{ t('blog.emptyState.description') }}
</p>
<UButton
color="primary"
variant="solid"
size="md"
icon="i-lucide-mail"
:to="localePath('/contact')"
>
{{ t('blog.emptyState.cta') }}
</UButton>
</div>
</div>
</section>
</div>
</template>