feat(02-02): create AppFooter, default layout, update app.vue with useLocaleHead

- AppFooter with copyright + Gitea/LinkedIn/Fiverr social icons (rel=noopener noreferrer)
- Default layout wraps header + slot + footer with min-h-screen flex
- app.vue uses NuxtLayout + useLocaleHead for global hreflang/canonical
- Fixed a11y.github -> a11y.gitea in both locale files

app/app.vue

@@ -1,13 +1,16 @@
 <script setup lang="ts">
 const { locale } = useI18n()
+const head = useLocaleHead({ addSeoAttributes: true })
+
 useHead({
   htmlAttrs: { lang: locale },
+  link: computed(() => head.value.link || []),
+  meta: computed(() => head.value.meta || []),
 })
 </script>
 
 <template>
-  <div>
+  <NuxtLayout>
-    <NuxtRouteAnnouncer />
     <NuxtPage />
-  </div>
+  </NuxtLayout>
 </template>

app/components/layout/AppFooter.vue

@@ -0,0 +1,33 @@
+<script setup lang="ts">
+const { t } = useI18n()
+
+const socialLinks = [
+  { name: 'gitea', url: 'https://gitea.kamisama.ovh/kayjaydee', icon: 'simple-icons:gitea', ariaKey: 'a11y.gitea' },
+  { name: 'linkedin', url: 'https://linkedin.com/in/killian-dal-cin', icon: 'simple-icons:linkedin', ariaKey: 'a11y.linkedin' },
+  { name: 'fiverr', url: 'https://www.fiverr.com/users/mr_kayjaydee', icon: 'simple-icons:fiverr', ariaKey: 'a11y.fiverr' },
+]
+</script>
+
+<template>
+  <footer class="py-6 bg-gray-100 dark:bg-gray-800">
+    <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 flex flex-col md:flex-row items-center justify-between gap-4">
+      <p class="text-sm text-gray-600 dark:text-gray-400">
+        {{ t('footer.copyright') }}
+      </p>
+
+      <div class="flex items-center gap-4">
+        <a
+          v-for="link in socialLinks"
+          :key="link.name"
+          :href="link.url"
+          target="_blank"
+          rel="noopener noreferrer"
+          :aria-label="t(link.ariaKey)"
+          class="min-w-11 min-h-11 inline-flex items-center justify-center rounded focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-primary focus-visible:ring-offset-2 transition-colors"
+        >
+          <UIcon :name="link.icon" class="w-5 h-5 text-gray-500 dark:text-gray-400 hover:text-primary-500 transition-colors duration-150" />
+        </a>
+      </div>
+    </div>
+  </footer>
+</template>

app/layouts/default.vue

@@ -0,0 +1,9 @@
+<template>
+  <div class="min-h-screen flex flex-col">
+    <AppHeader />
+    <main class="flex-1">
+      <slot />
+    </main>
+    <AppFooter />
+  </div>
+</template>

app/locales/en.json

@@ -28,7 +28,7 @@
     "langToggle": "Change language \u2014 currently English",
     "themeDark": "Switch to light mode",
     "themeLight": "Switch to dark mode",
-    "github": "Killian Dalcin on GitHub (opens in new tab)",
+    "gitea": "Killian Dalcin on Gitea (opens in new tab)",
     "linkedin": "Killian Dalcin on LinkedIn (opens in new tab)",
     "fiverr": "Killian Dalcin on Fiverr (opens in new tab)"
   },

app/locales/fr.json

@@ -28,7 +28,7 @@
     "langToggle": "Changer la langue \u2014 actuellement Francais",
     "themeDark": "Activer le mode clair",
     "themeLight": "Activer le mode sombre",
-    "github": "GitHub de Killian Dalcin (nouvelle fenetre)",
+    "gitea": "Gitea de Killian Dalcin (nouvelle fenetre)",
     "linkedin": "LinkedIn de Killian Dalcin (nouvelle fenetre)",
     "fiverr": "Fiverr de Killian Dalcin (nouvelle fenetre)"
   },