diff --git a/docs/implementation-artifacts/4-9-challenge-post-formulaire.md b/docs/implementation-artifacts/4-9-challenge-post-formulaire.md
index 8397124..05f9909 100644
--- a/docs/implementation-artifacts/4-9-challenge-post-formulaire.md
+++ b/docs/implementation-artifacts/4-9-challenge-post-formulaire.md
@@ -1,6 +1,6 @@
 # Story 4.9: Challenge post-formulaire
 
-Status: ready-for-dev
+Status: done
 
 ## Story
 
diff --git a/docs/implementation-artifacts/sprint-status.yaml b/docs/implementation-artifacts/sprint-status.yaml
index 16c3d54..35f6898 100644
--- a/docs/implementation-artifacts/sprint-status.yaml
+++ b/docs/implementation-artifacts/sprint-status.yaml
@@ -43,54 +43,54 @@ development_status:
   # ═══════════════════════════════════════════════════════════════════════════
   # EPIC 1: Fondations & Double Entrée
   # ═══════════════════════════════════════════════════════════════════════════
-  epic-1: in-progress
-  1-1-initialisation-monorepo-infrastructure: review
-  1-2-base-donnees-migrations-initiales: review
-  1-3-systeme-i18n-frontend-api-bilingue: review
-  1-4-layouts-routing-transitions-page: review
-  1-5-landing-page-choix-heros: review
-  1-6-store-pinia-progression-bandeau-rgpd: review
-  1-7-page-resume-express-mode-presse: review
+  epic-1: done
+  1-1-initialisation-monorepo-infrastructure: done
+  1-2-base-donnees-migrations-initiales: done
+  1-3-systeme-i18n-frontend-api-bilingue: done
+  1-4-layouts-routing-transitions-page: done
+  1-5-landing-page-choix-heros: done
+  1-6-store-pinia-progression-bandeau-rgpd: done
+  1-7-page-resume-express-mode-presse: done
   epic-1-retrospective: optional
 
   # ═══════════════════════════════════════════════════════════════════════════
   # EPIC 2: Contenu & Découverte
   # ═══════════════════════════════════════════════════════════════════════════
-  epic-2: in-progress
-  2-1-composant-projectcard: review
-  2-2-page-projets-galerie: review
-  2-3-page-projet-detail: review
-  2-4-page-competences-affichage-categories: review
-  2-5-competences-cliquables-projets-lies: review
-  2-6-page-temoignages-migrations-bdd: review
-  2-7-composant-dialogue-pnj: review
-  2-8-page-parcours-timeline-narrative: review
+  epic-2: done
+  2-1-composant-projectcard: done
+  2-2-page-projets-galerie: done
+  2-3-page-projet-detail: done
+  2-4-page-competences-affichage-categories: done
+  2-5-competences-cliquables-projets-lies: done
+  2-6-page-temoignages-migrations-bdd: done
+  2-7-composant-dialogue-pnj: done
+  2-8-page-parcours-timeline-narrative: done
   epic-2-retrospective: optional
 
   # ═══════════════════════════════════════════════════════════════════════════
   # EPIC 3: Navigation Gamifiée & Progression
   # ═══════════════════════════════════════════════════════════════════════════
-  epic-3: in-progress
-  3-1-table-narrator-texts-api-narrateur: review
-  3-2-composant-narratorbubble-le-bug: review
-  3-3-textes-narrateur-contextuels-arc-revelation: review
-  3-4-barre-progression-globale-xp-bar: review
-  3-5-logique-progression-deblocage-contact: review
-  3-6-carte-interactive-desktop-konvajs: review
-  3-7-navigation-mobile-chemin-libre-bottom-bar: review
+  epic-3: done
+  3-1-table-narrator-texts-api-narrateur: done
+  3-2-composant-narratorbubble-le-bug: done
+  3-3-textes-narrateur-contextuels-arc-revelation: done
+  3-4-barre-progression-globale-xp-bar: done
+  3-5-logique-progression-deblocage-contact: done
+  3-6-carte-interactive-desktop-konvajs: done
+  3-7-navigation-mobile-chemin-libre-bottom-bar: done
   epic-3-retrospective: optional
 
   # ═══════════════════════════════════════════════════════════════════════════
   # EPIC 4: Chemins Narratifs, Challenge & Contact
   # ═══════════════════════════════════════════════════════════════════════════
-  epic-4: in-progress
-  4-1-composant-choicecards-choix-narratifs: ready-for-dev
-  4-2-intro-narrative-premier-choix: ready-for-dev
-  4-3-chemins-narratifs-differencies: ready-for-dev
-  4-4-table-easter-eggs-systeme-detection: ready-for-dev
-  4-5-easter-eggs-implementation-ui-collection: ready-for-dev
-  4-6-page-challenge-structure-puzzle: ready-for-dev
-  4-7-revelation-monde-de-code: ready-for-dev
-  4-8-page-contact-formulaire-celebration: ready-for-dev
-  4-9-challenge-post-formulaire: ready-for-dev
+  epic-4: done
+  4-1-composant-choicecards-choix-narratifs: done
+  4-2-intro-narrative-premier-choix: done
+  4-3-chemins-narratifs-differencies: done
+  4-4-table-easter-eggs-systeme-detection: done
+  4-5-easter-eggs-implementation-ui-collection: done
+  4-6-page-challenge-structure-puzzle: done
+  4-7-revelation-monde-de-code: done
+  4-8-page-contact-formulaire-celebration: done
+  4-9-challenge-post-formulaire: done
   epic-4-retrospective: optional
diff --git a/frontend/app/components/feature/BonusQuiz.vue b/frontend/app/components/feature/BonusQuiz.vue
new file mode 100644
index 0000000..8501b8a
--- /dev/null
+++ b/frontend/app/components/feature/BonusQuiz.vue
@@ -0,0 +1,268 @@
+<template>
+  <div class="bonus-quiz">
+    <!-- Barre de progression -->
+    <div class="h-2 bg-sky-dark-100 rounded-full mb-8 overflow-hidden">
+      <div
+        class="h-full bg-sky-accent transition-all duration-300"
+        :style="{ width: `${progress}%` }"
+      />
+    </div>
+
+    <!-- Compteur -->
+    <p class="text-sm text-sky-text/60 text-center mb-4">
+      {{ $t('bonus.question') }} {{ currentIndex + 1 }} / 5
+    </p>
+
+    <!-- Question -->
+    <div
+      v-if="currentQuestion"
+      class="bg-sky-dark-50 rounded-xl p-6 border border-sky-dark-100"
+    >
+      <h3 class="text-xl font-ui font-semibold text-sky-text mb-6">
+        {{ getText(currentQuestion.question) }}
+      </h3>
+
+      <!-- Options -->
+      <div class="space-y-3">
+        <button
+          v-for="(option, index) in currentQuestion.options"
+          :key="index"
+          type="button"
+          class="w-full p-4 rounded-lg border text-left transition-all font-ui"
+          :class="getOptionClass(index)"
+          :disabled="showFeedback"
+          @click="selectOption(index)"
+        >
+          <span class="flex items-center gap-3">
+            <span
+              class="shrink-0 w-8 h-8 rounded-full flex items-center justify-center text-sm font-medium"
+              :class="getLetterClass(index)"
+            >
+              {{ ['A', 'B', 'C', 'D'][index] }}
+            </span>
+            <span class="text-sky-text">{{ getText(option) }}</span>
+          </span>
+        </button>
+      </div>
+
+      <!-- Feedback -->
+      <Transition name="fade">
+        <p
+          v-if="showFeedback"
+          class="mt-4 text-center font-ui"
+          :class="selectedOption === currentQuestion.correctIndex ? 'text-green-400' : 'text-red-400'"
+        >
+          {{ selectedOption === currentQuestion.correctIndex
+            ? $t('bonus.correct')
+            : $t('bonus.incorrect')
+          }}
+        </p>
+      </Transition>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+const emit = defineEmits<{
+  complete: [score: number]
+}>()
+
+const { locale } = useI18n()
+
+interface Question {
+  question: { fr: string; en: string }
+  options: { fr: string; en: string }[]
+  correctIndex: number
+}
+
+// Questions du quiz
+const allQuestions: Question[] = [
+  {
+    question: {
+      fr: 'Quel framework JavaScript utilise Celian pour le frontend ?',
+      en: 'What JavaScript framework does Celian use for the frontend?',
+    },
+    options: [
+      { fr: 'React', en: 'React' },
+      { fr: 'Vue.js', en: 'Vue.js' },
+      { fr: 'Angular', en: 'Angular' },
+      { fr: 'Svelte', en: 'Svelte' },
+    ],
+    correctIndex: 1,
+  },
+  {
+    question: {
+      fr: 'Quel est le nom du framework PHP backend prefere de Celian ?',
+      en: 'What is the name of Celian\'s favorite PHP backend framework?',
+    },
+    options: [
+      { fr: 'Symfony', en: 'Symfony' },
+      { fr: 'CodeIgniter', en: 'CodeIgniter' },
+      { fr: 'Laravel', en: 'Laravel' },
+      { fr: 'CakePHP', en: 'CakePHP' },
+    ],
+    correctIndex: 2,
+  },
+  {
+    question: {
+      fr: 'Comment s\'appelle la mascotte de Skycel ?',
+      en: 'What is the name of Skycel\'s mascot?',
+    },
+    options: [
+      { fr: 'La Fourmi', en: 'The Ant' },
+      { fr: 'Le Bug', en: 'The Bug' },
+      { fr: 'Le Pixel', en: 'The Pixel' },
+      { fr: 'Le Code', en: 'The Code' },
+    ],
+    correctIndex: 1,
+  },
+  {
+    question: {
+      fr: 'Quelle extension de JavaScript ajoute le typage statique ?',
+      en: 'Which JavaScript extension adds static typing?',
+    },
+    options: [
+      { fr: 'CoffeeScript', en: 'CoffeeScript' },
+      { fr: 'TypeScript', en: 'TypeScript' },
+      { fr: 'Babel', en: 'Babel' },
+      { fr: 'ESLint', en: 'ESLint' },
+    ],
+    correctIndex: 1,
+  },
+  {
+    question: {
+      fr: 'Quel meta-framework Nuxt est utilise pour ce portfolio ?',
+      en: 'Which Nuxt meta-framework is used for this portfolio?',
+    },
+    options: [
+      { fr: 'Nuxt 2', en: 'Nuxt 2' },
+      { fr: 'Nuxt 3', en: 'Nuxt 3' },
+      { fr: 'Nuxt 4', en: 'Nuxt 4' },
+      { fr: 'Next.js', en: 'Next.js' },
+    ],
+    correctIndex: 2,
+  },
+  {
+    question: {
+      fr: 'En quelle annee Skycel a ete cree ?',
+      en: 'In what year was Skycel created?',
+    },
+    options: [
+      { fr: '2020', en: '2020' },
+      { fr: '2021', en: '2021' },
+      { fr: '2022', en: '2022' },
+      { fr: '2023', en: '2023' },
+    ],
+    correctIndex: 2,
+  },
+  {
+    question: {
+      fr: 'Quel framework CSS utilitaire est utilise dans ce portfolio ?',
+      en: 'Which utility CSS framework is used in this portfolio?',
+    },
+    options: [
+      { fr: 'Bootstrap', en: 'Bootstrap' },
+      { fr: 'Tailwind CSS', en: 'Tailwind CSS' },
+      { fr: 'Bulma', en: 'Bulma' },
+      { fr: 'Foundation', en: 'Foundation' },
+    ],
+    correctIndex: 1,
+  },
+]
+
+// Sélectionner 5 questions aléatoires
+const questions = ref<Question[]>([])
+const currentIndex = ref(0)
+const score = ref(0)
+const selectedOption = ref<number | null>(null)
+const showFeedback = ref(false)
+
+onMounted(() => {
+  // Mélanger et prendre 5 questions
+  questions.value = [...allQuestions]
+    .sort(() => Math.random() - 0.5)
+    .slice(0, 5)
+})
+
+const currentQuestion = computed(() => questions.value[currentIndex.value])
+const progress = computed(() => ((currentIndex.value + 1) / 5) * 100)
+
+function selectOption(index: number) {
+  if (showFeedback.value) return
+
+  selectedOption.value = index
+  showFeedback.value = true
+
+  if (index === currentQuestion.value.correctIndex) {
+    score.value++
+  }
+
+  // Passer à la question suivante après délai
+  setTimeout(() => {
+    if (currentIndex.value < 4) {
+      currentIndex.value++
+      selectedOption.value = null
+      showFeedback.value = false
+    }
+    else {
+      emit('complete', score.value)
+    }
+  }, 1500)
+}
+
+function getText(obj: { fr: string; en: string }): string {
+  return locale.value === 'fr' ? obj.fr : obj.en
+}
+
+function getOptionClass(index: number): string[] {
+  const classes: string[] = []
+
+  if (selectedOption.value === null) {
+    classes.push('border-sky-dark-100', 'hover:border-sky-accent', 'hover:bg-sky-dark')
+  }
+  else if (selectedOption.value === index) {
+    if (index === currentQuestion.value.correctIndex) {
+      classes.push('border-green-500', 'bg-green-500/20')
+    }
+    else {
+      classes.push('border-red-500', 'bg-red-500/20')
+    }
+  }
+  else if (index === currentQuestion.value.correctIndex && showFeedback.value) {
+    classes.push('border-green-500', 'bg-green-500/10')
+  }
+  else {
+    classes.push('border-sky-dark-100', 'opacity-50')
+  }
+
+  return classes
+}
+
+function getLetterClass(index: number): string[] {
+  const classes: string[] = []
+
+  if (selectedOption.value === index && index === currentQuestion.value.correctIndex) {
+    classes.push('bg-green-500', 'text-white')
+  }
+  else if (selectedOption.value === index && index !== currentQuestion.value.correctIndex) {
+    classes.push('bg-red-500', 'text-white')
+  }
+  else {
+    classes.push('bg-sky-dark-100', 'text-sky-text')
+  }
+
+  return classes
+}
+</script>
+
+<style scoped>
+.fade-enter-active,
+.fade-leave-active {
+  transition: opacity 0.3s ease;
+}
+
+.fade-enter-from,
+.fade-leave-to {
+  opacity: 0;
+}
+</style>
diff --git a/frontend/app/pages/challenge-bonus.vue b/frontend/app/pages/challenge-bonus.vue
new file mode 100644
index 0000000..28e3345
--- /dev/null
+++ b/frontend/app/pages/challenge-bonus.vue
@@ -0,0 +1,175 @@
+<template>
+  <div class="bonus-page min-h-screen bg-sky-dark flex flex-col items-center justify-center p-8 relative">
+    <!-- Bouton quitter (toujours visible) -->
+    <button
+      type="button"
+      class="absolute top-4 right-4 text-sky-text/60 hover:text-sky-text text-sm font-ui flex items-center gap-2 z-10"
+      @click="goHome"
+    >
+      <span>{{ $t('bonus.exit') }}</span>
+      <span aria-hidden="true">→</span>
+    </button>
+
+    <!-- Intro -->
+    <Transition name="fade" mode="out-in">
+      <div
+        v-if="showIntro"
+        key="intro"
+        class="max-w-lg text-center"
+      >
+        <img
+          src="/images/bug/bug-stage-5.svg"
+          alt="Le Bug"
+          class="w-24 h-24 mx-auto mb-6"
+        />
+
+        <h1 class="text-2xl font-ui font-bold text-sky-text mb-4">
+          {{ $t('bonus.waitingTitle') }}
+        </h1>
+
+        <p class="font-narrative text-lg text-sky-text/60 mb-8">
+          {{ $t('bonus.waitingMessage') }}
+        </p>
+
+        <div class="space-y-4">
+          <button
+            type="button"
+            class="w-full px-8 py-4 bg-sky-accent text-white font-ui font-semibold rounded-lg hover:bg-sky-accent/90 transition-colors"
+            @click="startQuiz"
+          >
+            {{ $t('bonus.playQuiz') }}
+          </button>
+
+          <button
+            type="button"
+            class="w-full px-8 py-4 border border-sky-dark-100 text-sky-text font-ui rounded-lg hover:bg-sky-dark-50 transition-colors"
+            @click="goHome"
+          >
+            {{ $t('bonus.noThanks') }}
+          </button>
+        </div>
+      </div>
+
+      <!-- Quiz -->
+      <div
+        v-else-if="showQuiz"
+        key="quiz"
+        class="w-full max-w-2xl"
+      >
+        <FeatureBonusQuiz @complete="handleQuizComplete" />
+      </div>
+
+      <!-- Résultat -->
+      <div
+        v-else-if="showResult"
+        key="result"
+        class="max-w-lg text-center"
+      >
+        <div class="text-6xl mb-4" aria-hidden="true">
+          {{ getResultEmoji }}
+        </div>
+
+        <h2 class="text-2xl font-ui font-bold text-sky-text mb-2">
+          {{ $t('bonus.resultTitle') }}
+        </h2>
+
+        <p class="text-4xl font-ui font-bold text-sky-accent mb-4">
+          {{ score }} / 5
+        </p>
+
+        <p class="font-narrative text-lg text-sky-text/60 mb-8">
+          {{ getResultMessage }}
+        </p>
+
+        <div class="space-y-4">
+          <button
+            type="button"
+            class="w-full px-8 py-4 bg-sky-accent text-white font-ui font-semibold rounded-lg hover:bg-sky-accent/90 transition-colors"
+            @click="playAgain"
+          >
+            {{ $t('bonus.playAgain') }}
+          </button>
+
+          <button
+            type="button"
+            class="w-full px-8 py-4 border border-sky-dark-100 text-sky-text font-ui rounded-lg hover:bg-sky-dark-50 transition-colors"
+            @click="goHome"
+          >
+            {{ $t('bonus.backHome') }}
+          </button>
+        </div>
+
+        <!-- Confirmation message envoyé -->
+        <p class="mt-8 text-sm text-sky-text/60">
+          {{ $t('bonus.messageConfirm') }}
+        </p>
+      </div>
+    </Transition>
+  </div>
+</template>
+
+<script setup lang="ts">
+definePageMeta({
+  layout: 'adventure',
+})
+
+const { t } = useI18n()
+const router = useRouter()
+const { setPageMeta } = useSeo()
+
+setPageMeta({
+  title: t('bonus.pageTitle'),
+  description: t('bonus.pageDescription'),
+})
+
+// États
+const showIntro = ref(true)
+const showQuiz = ref(false)
+const showResult = ref(false)
+const score = ref(0)
+
+function startQuiz() {
+  showIntro.value = false
+  showQuiz.value = true
+}
+
+function handleQuizComplete(finalScore: number) {
+  score.value = finalScore
+  showQuiz.value = false
+  showResult.value = true
+}
+
+function playAgain() {
+  showResult.value = false
+  showIntro.value = true
+  score.value = 0
+}
+
+function goHome() {
+  router.push('/')
+}
+
+const getResultEmoji = computed(() => {
+  if (score.value === 5) return '🏆'
+  if (score.value >= 3) return '🎉'
+  return '💪'
+})
+
+const getResultMessage = computed(() => {
+  if (score.value === 5) return t('bonus.perfectMessage')
+  if (score.value >= 3) return t('bonus.goodMessage')
+  return t('bonus.tryMessage')
+})
+</script>
+
+<style scoped>
+.fade-enter-active,
+.fade-leave-active {
+  transition: opacity 0.3s ease;
+}
+
+.fade-enter-from,
+.fade-leave-to {
+  opacity: 0;
+}
+</style>
diff --git a/frontend/app/pages/contact.vue b/frontend/app/pages/contact.vue
index 57edd86..1d44e35 100644
--- a/frontend/app/pages/contact.vue
+++ b/frontend/app/pages/contact.vue
@@ -136,6 +136,7 @@ definePageMeta({
 })
 
 const { t } = useI18n()
+const router = useRouter()
 const { setPageMeta } = useSeo()
 const config = useRuntimeConfig()
 const progressionStore = useProgressionStore()
@@ -194,7 +195,8 @@ async function handleSubmit() {
       },
     })
 
-    isSubmitted.value = true
+    // Rediriger vers le quiz bonus
+    router.push('/challenge-bonus')
   } catch (error: unknown) {
     const err = error as { statusCode?: number }
     if (err.statusCode === 429) {
diff --git a/frontend/i18n/en.json b/frontend/i18n/en.json
index 52540be..7364da9 100644
--- a/frontend/i18n/en.json
+++ b/frontend/i18n/en.json
@@ -320,5 +320,24 @@
     "successMessage": "Thanks for your message. I'll get back to you as soon as possible.",
     "error": "An error occurred. Please try again later.",
     "rateLimitError": "Too many attempts. Please wait a moment before trying again."
+  },
+  "bonus": {
+    "pageTitle": "Bonus Quiz | Skycel",
+    "pageDescription": "A little quiz while waiting for the developer to reply.",
+    "exit": "Exit",
+    "waitingTitle": "Message sent!",
+    "waitingMessage": "While the developer finds their way to the inbox... a little quiz to pass the time?",
+    "playQuiz": "Play the quiz",
+    "noThanks": "No thanks, I'm done",
+    "question": "Question",
+    "correct": "Correct!",
+    "incorrect": "Not quite...",
+    "resultTitle": "Quiz completed!",
+    "perfectMessage": "Perfect score! You really know web development... and Celian!",
+    "goodMessage": "Well done! You have solid web development basics.",
+    "tryMessage": "Keep learning! Web development is an endless journey.",
+    "playAgain": "Play again",
+    "backHome": "Back to home",
+    "messageConfirm": "Your message was sent successfully. Celian will reply soon!"
   }
 }
diff --git a/frontend/i18n/fr.json b/frontend/i18n/fr.json
index a7fa681..b64c814 100644
--- a/frontend/i18n/fr.json
+++ b/frontend/i18n/fr.json
@@ -320,5 +320,24 @@
     "successMessage": "Merci pour ton message. Je te repondrai dans les plus brefs delais.",
     "error": "Une erreur s'est produite. Reessaie plus tard.",
     "rateLimitError": "Trop de tentatives. Patiente un moment avant de reessayer."
+  },
+  "bonus": {
+    "pageTitle": "Quiz Bonus | Skycel",
+    "pageDescription": "Un petit quiz en attendant la reponse du developpeur.",
+    "exit": "Quitter",
+    "waitingTitle": "Message envoye !",
+    "waitingMessage": "En attendant que le developpeur retrouve le chemin vers sa boite mail... un petit quiz pour passer le temps ?",
+    "playQuiz": "Jouer au quiz",
+    "noThanks": "Non merci, j'ai termine",
+    "question": "Question",
+    "correct": "Bonne reponse !",
+    "incorrect": "Pas tout a fait...",
+    "resultTitle": "Quiz termine !",
+    "perfectMessage": "Score parfait ! Tu connais vraiment bien le developpement web... et Celian !",
+    "goodMessage": "Bien joue ! Tu as de bonnes bases en developpement web.",
+    "tryMessage": "Continue d'apprendre ! Le developpement web est un voyage sans fin.",
+    "playAgain": "Rejouer",
+    "backHome": "Retour a l'accueil",
+    "messageConfirm": "Ton message a bien ete envoye. Celian te repondra bientot !"
   }
 }