diff --git a/caddy.conf b/caddy.conf
index 3d93398..b650460 100644
--- a/caddy.conf
+++ b/caddy.conf
@@ -15,9 +15,12 @@ infolab.ledonut-marseille.org {
         -Server
     }
 
-    # API JSON -> conteneur PHP (sur réseau Docker local, exposé en 127.0.0.1:8003)
-    @api path /api/*
-    handle @api {
+    # API JSON et images uploadées -> conteneur PHP (sur donut-net, exposé 127.0.0.1:8003).
+    # /uploads/* contient les images de la galerie projet stockées sur disque par
+    # l'admin via POST /api/projects/:slug/images (multipart). Apache du conteneur
+    # les sert en static — pas besoin de PHP juste pour servir un fichier.
+    @apiOrUploads path /api/* /uploads/*
+    handle @apiOrUploads {
         reverse_proxy 127.0.0.1:8003 {
             header_up Host {host}
             header_up X-Real-IP {remote_host}
diff --git a/frontend/src/api/client.ts b/frontend/src/api/client.ts
index cf1d2a0..c20f801 100644
--- a/frontend/src/api/client.ts
+++ b/frontend/src/api/client.ts
@@ -116,3 +116,45 @@ export const api = {
   patch:  <T>(path: string, body: Json,           opts?: RequestOptions) => request<T>('PATCH',  path, body, opts),
   delete: <T>(path: string,                       opts?: RequestOptions) => request<T>('DELETE', path, undefined, opts),
 }
+
+/**
+ * Upload multipart/form-data — utilisé par la galerie projet.
+ *
+ * Le navigateur fixe lui-même le Content-Type avec le bon boundary, on ne le
+ * définit donc PAS à la main (sinon le boundary serait absent et le backend ne
+ * saurait pas découper le body).
+ *
+ * @param path   path vers l'endpoint, ex: '/api/projects/nos-ecoles/images'
+ * @param fields champs texte additionnels (caption, sort_order, ...)
+ * @param file   le fichier (issu d'un <input type="file"> ou drop)
+ * @param fileFieldName  nom du champ côté serveur (défaut 'file')
+ */
+export async function uploadFile<T>(
+  path: string,
+  file: File,
+  fields: Record<string, string | number | undefined | null> = {},
+  fileFieldName = 'file',
+): Promise<T> {
+  const form = new FormData()
+  form.append(fileFieldName, file, file.name)
+  for (const [k, v] of Object.entries(fields)) {
+    if (v !== undefined && v !== null && v !== '') {
+      form.append(k, String(v))
+    }
+  }
+
+  const headers: Record<string, string> = { Accept: 'application/json' }
+  const token = getAdminToken()
+  if (token) headers['Authorization'] = `Bearer ${token}`
+
+  const res = await fetch(path, { method: 'POST', headers, body: form })
+
+  if (res.status === 204) return undefined as T
+  const text = await res.text()
+  const data = text === '' ? null : (JSON.parse(text) as unknown)
+  if (!res.ok) {
+    const payload = (data ?? { error: 'internal_server_error' }) as ApiErrorPayload
+    throw new ApiError(res.status, payload.error ?? `http_${res.status}`, payload)
+  }
+  return data as T
+}
diff --git a/frontend/src/components/AdminSubNav.vue b/frontend/src/components/AdminSubNav.vue
new file mode 100644
index 0000000..86088a4
--- /dev/null
+++ b/frontend/src/components/AdminSubNav.vue
@@ -0,0 +1,41 @@
+<script setup lang="ts">
+/**
+ * Sous-nav du dashboard admin : 4 onglets visuels en haut de chaque page /admin/*.
+ * On reste dans AppLayout (sidebar principale visible), c'est seulement une
+ * convention de styling pour signaler qu'on est en "mode admin".
+ */
+import { RouterLink } from 'vue-router'
+
+const items = [
+  { to: { name: 'admin-overview' },   label: "Vue d'ensemble" },
+  { to: { name: 'admin-projects' },   label: 'Projets' },
+  { to: { name: 'admin-members' },    label: 'Membres' },
+  { to: { name: 'admin-categories' }, label: 'Catégories' },
+]
+</script>
+
+<template>
+  <div class="border-b border-donut-border">
+    <nav class="flex items-center gap-1 -mb-px">
+      <RouterLink
+        v-for="it in items" :key="it.to.name"
+        :to="it.to"
+        custom
+        v-slot="{ href, navigate, isActive }"
+      >
+        <a
+          :href="href"
+          @click="navigate"
+          :class="[
+            'inline-flex items-center px-4 py-2.5 text-sm font-medium border-b-2 transition-colors',
+            isActive
+              ? 'border-donut-text text-donut-text'
+              : 'border-transparent text-donut-muted hover:text-donut-text',
+          ]"
+        >
+          {{ it.label }}
+        </a>
+      </RouterLink>
+    </nav>
+  </div>
+</template>
diff --git a/frontend/src/components/AppSidebar.vue b/frontend/src/components/AppSidebar.vue
index 81955de..5cc80af 100644
--- a/frontend/src/components/AppSidebar.vue
+++ b/frontend/src/components/AppSidebar.vue
@@ -121,6 +121,33 @@ const navItems: NavLink[] = [
           {{ item.label }}
         </a>
       </RouterLink>
+
+      <!-- Section admin (visible uniquement quand on a un token) -->
+      <template v-if="isAuthenticated">
+        <div class="px-2 pt-5 pb-2 text-[10px] font-semibold uppercase tracking-wider text-donut-muted">
+          Administration
+        </div>
+        <RouterLink
+          :to="{ name: 'admin-overview' }"
+          custom
+          v-slot="{ href, navigate, isActive }"
+        >
+          <a
+            :href="href" @click="navigate"
+            :class="[
+              'flex items-center gap-2.5 px-3 py-2 rounded-md text-sm transition-colors',
+              isActive
+                ? 'bg-orange-50 text-status-active font-medium'
+                : 'text-donut-text hover:bg-gray-50',
+            ]"
+          >
+            <svg viewBox="0 0 24 24" class="w-4 h-4" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+              <circle cx="12" cy="12" r="3"/><path d="M19.4 15a1.65 1.65 0 0 0 .33 1.82l.06.06a2 2 0 1 1-2.83 2.83l-.06-.06a1.65 1.65 0 0 0-1.82-.33 1.65 1.65 0 0 0-1 1.51V21a2 2 0 1 1-4 0v-.09A1.65 1.65 0 0 0 9 19.4a1.65 1.65 0 0 0-1.82.33l-.06.06a2 2 0 1 1-2.83-2.83l.06-.06a1.65 1.65 0 0 0 .33-1.82 1.65 1.65 0 0 0-1.51-1H3a2 2 0 1 1 0-4h.09A1.65 1.65 0 0 0 4.6 9a1.65 1.65 0 0 0-.33-1.82l-.06-.06a2 2 0 1 1 2.83-2.83l.06.06a1.65 1.65 0 0 0 1.82.33H9a1.65 1.65 0 0 0 1-1.51V3a2 2 0 1 1 4 0v.09a1.65 1.65 0 0 0 1 1.51 1.65 1.65 0 0 0 1.82-.33l.06-.06a2 2 0 1 1 2.83 2.83l-.06.06a1.65 1.65 0 0 0-.33 1.82V9a1.65 1.65 0 0 0 1.51 1H21a2 2 0 1 1 0 4h-.09a1.65 1.65 0 0 0-1.51 1z"/>
+            </svg>
+            Dashboard admin
+          </a>
+        </RouterLink>
+      </template>
     </nav>
 
     <!-- Badge bas de sidebar : statut admin -->
diff --git a/frontend/src/components/ImageGallery.vue b/frontend/src/components/ImageGallery.vue
new file mode 100644
index 0000000..81b1606
--- /dev/null
+++ b/frontend/src/components/ImageGallery.vue
@@ -0,0 +1,195 @@
+<script setup lang="ts">
+/**
+ * Galerie d'images d'un projet.
+ *
+ *  - Grille de miniatures (lazy-load).
+ *  - Click thumb -> overlay plein écran avec navigation gauche/droite,
+ *    fermeture par clic hors image / Échap.
+ *  - Mode admin (token Bearer présent) : bouton Supprimer par image + uploader.
+ */
+
+import { ref, computed, watch, onMounted, onUnmounted } from 'vue'
+import { api, ApiError } from '@/api/client'
+import { useAuth } from '@/composables/useAuth'
+import type { ProjectImage, Wrapped } from '@/types/api'
+import ImageUploader from './ImageUploader.vue'
+import LoadingState from './LoadingState.vue'
+
+const props = defineProps<{ projectSlug: string }>()
+const { isAuthenticated } = useAuth()
+
+const images = ref<ProjectImage[]>([])
+const loading = ref(true)
+const error = ref<string | null>(null)
+const lightboxIndex = ref<number | null>(null)
+
+async function load() {
+  loading.value = true
+  error.value = null
+  try {
+    const r = await api.get<Wrapped<ProjectImage>>(`/api/projects/${encodeURIComponent(props.projectSlug)}/images`)
+    images.value = r.data
+  } catch (e) {
+    error.value = e instanceof ApiError ? (e.payload.message ?? e.code) : 'Erreur réseau'
+  } finally {
+    loading.value = false
+  }
+}
+
+onMounted(load)
+watch(() => props.projectSlug, load)
+
+function openLightbox(idx: number) {
+  lightboxIndex.value = idx
+}
+function closeLightbox() {
+  lightboxIndex.value = null
+}
+function next() {
+  if (lightboxIndex.value === null) return
+  lightboxIndex.value = (lightboxIndex.value + 1) % images.value.length
+}
+function prev() {
+  if (lightboxIndex.value === null) return
+  lightboxIndex.value = (lightboxIndex.value - 1 + images.value.length) % images.value.length
+}
+
+// Navigation clavier dans la lightbox.
+function onKey(e: KeyboardEvent) {
+  if (lightboxIndex.value === null) return
+  if (e.key === 'Escape') closeLightbox()
+  if (e.key === 'ArrowRight') next()
+  if (e.key === 'ArrowLeft') prev()
+}
+onMounted(() => window.addEventListener('keydown', onKey))
+onUnmounted(() => window.removeEventListener('keydown', onKey))
+
+async function remove(img: ProjectImage) {
+  if (!confirm(`Supprimer l'image « ${img.caption ?? 'sans légende'} » ?`)) return
+  try {
+    await api.delete(`/api/projects/${encodeURIComponent(props.projectSlug)}/images/${img.id}`)
+    images.value = images.value.filter(i => i.id !== img.id)
+    if (lightboxIndex.value !== null && lightboxIndex.value >= images.value.length) {
+      lightboxIndex.value = images.value.length === 0 ? null : images.value.length - 1
+    }
+  } catch (e) {
+    console.error('image delete failed', e)
+  }
+}
+
+function onUploaded(newImg: ProjectImage) {
+  images.value.push(newImg)
+}
+
+const currentImage = computed(() =>
+  lightboxIndex.value === null ? null : images.value[lightboxIndex.value],
+)
+</script>
+
+<template>
+  <div>
+    <LoadingState v-if="loading" />
+    <div v-else-if="error" class="text-sm text-red-700">{{ error }}</div>
+
+    <div v-else-if="images.length === 0" class="text-sm text-donut-muted">
+      Pas encore d'image.
+      <span v-if="!isAuthenticated">Connecte-toi en admin pour en ajouter.</span>
+    </div>
+
+    <!-- Grille -->
+    <div v-else class="grid grid-cols-2 sm:grid-cols-3 lg:grid-cols-4 gap-3">
+      <div
+        v-for="(img, idx) in images" :key="img.id"
+        class="group relative aspect-square rounded-lg overflow-hidden bg-gray-100 cursor-pointer"
+        @click="openLightbox(idx)"
+      >
+        <img
+          :src="img.url"
+          :alt="img.caption ?? `Image ${idx + 1} du projet`"
+          loading="lazy"
+          class="absolute inset-0 w-full h-full object-cover transition-transform group-hover:scale-105"
+        />
+        <div
+          v-if="img.caption"
+          class="absolute inset-x-0 bottom-0 px-2.5 py-1.5 bg-gradient-to-t from-black/70 to-transparent text-white text-xs"
+        >
+          {{ img.caption }}
+        </div>
+        <button
+          v-if="isAuthenticated"
+          type="button"
+          class="absolute top-1.5 right-1.5 opacity-0 group-hover:opacity-100 transition-opacity bg-red-500/90 hover:bg-red-600 text-white rounded-md p-1.5"
+          title="Supprimer"
+          @click.stop="remove(img)"
+        >
+          <svg viewBox="0 0 24 24" class="w-3.5 h-3.5" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round">
+            <path d="M18 6 6 18M6 6l12 12"/>
+          </svg>
+        </button>
+      </div>
+    </div>
+
+    <!-- Uploader (admin uniquement) -->
+    <div v-if="isAuthenticated" class="mt-4 pt-4 border-t border-donut-border">
+      <ImageUploader :project-slug="projectSlug" @uploaded="onUploaded" />
+    </div>
+
+    <!-- Lightbox -->
+    <Teleport to="body">
+      <div
+        v-if="currentImage"
+        class="fixed inset-0 z-50 flex items-center justify-center bg-black/90 px-4"
+        @click.self="closeLightbox"
+      >
+        <button
+          type="button"
+          class="absolute top-4 right-4 text-white/80 hover:text-white"
+          @click="closeLightbox"
+          aria-label="Fermer"
+        >
+          <svg viewBox="0 0 24 24" class="w-7 h-7" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round">
+            <path d="M18 6 6 18M6 6l12 12"/>
+          </svg>
+        </button>
+
+        <button
+          v-if="images.length > 1"
+          type="button"
+          class="absolute left-4 top-1/2 -translate-y-1/2 text-white/80 hover:text-white p-2"
+          @click="prev"
+          aria-label="Image précédente"
+        >
+          <svg viewBox="0 0 24 24" class="w-8 h-8" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+            <path d="m15 18-6-6 6-6"/>
+          </svg>
+        </button>
+
+        <div class="max-w-5xl max-h-full flex flex-col items-center">
+          <img
+            :src="currentImage.url"
+            :alt="currentImage.caption ?? 'Image projet'"
+            class="max-h-[80vh] max-w-full object-contain rounded-lg"
+          />
+          <div v-if="currentImage.caption" class="mt-3 text-white/90 text-sm">
+            {{ currentImage.caption }}
+          </div>
+          <div class="mt-1 text-white/40 text-xs">
+            {{ (lightboxIndex ?? 0) + 1 }} / {{ images.length }}
+          </div>
+        </div>
+
+        <button
+          v-if="images.length > 1"
+          type="button"
+          class="absolute right-4 top-1/2 -translate-y-1/2 text-white/80 hover:text-white p-2"
+          @click="next"
+          aria-label="Image suivante"
+        >
+          <svg viewBox="0 0 24 24" class="w-8 h-8" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+            <path d="m9 18 6-6-6-6"/>
+          </svg>
+        </button>
+      </div>
+    </Teleport>
+  </div>
+</template>
diff --git a/frontend/src/components/ImageUploader.vue b/frontend/src/components/ImageUploader.vue
new file mode 100644
index 0000000..622a01f
--- /dev/null
+++ b/frontend/src/components/ImageUploader.vue
@@ -0,0 +1,137 @@
+<script setup lang="ts">
+/**
+ * Uploader d'images : drag-and-drop OU file picker, + champ légende optionnel.
+ * Accepte plusieurs fichiers, les upload en série pour conserver l'ordre.
+ */
+
+import { ref } from 'vue'
+import { uploadFile, ApiError } from '@/api/client'
+import type { ProjectImage } from '@/types/api'
+
+const props = defineProps<{ projectSlug: string }>()
+const emit = defineEmits<{
+  (e: 'uploaded', img: ProjectImage): void
+}>()
+
+const fileInput = ref<HTMLInputElement | null>(null)
+const dragOver = ref(false)
+const caption = ref('')
+const uploading = ref(false)
+const queueSize = ref(0)
+const queueDone = ref(0)
+const error = ref<string | null>(null)
+
+const ACCEPT = 'image/jpeg,image/png,image/webp,image/gif'
+const MAX_BYTES = 5 * 1024 * 1024
+
+async function uploadOne(file: File): Promise<void> {
+  if (file.size > MAX_BYTES) {
+    error.value = `« ${file.name } » fait ${(file.size / 1024 / 1024).toFixed(1)} Mo (max 5 Mo)`
+    return
+  }
+  try {
+    const img = await uploadFile<ProjectImage>(
+      `/api/projects/${encodeURIComponent(props.projectSlug)}/images`,
+      file,
+      { caption: caption.value.trim() || undefined },
+    )
+    emit('uploaded', img)
+  } catch (e) {
+    if (e instanceof ApiError) {
+      if (e.status === 422 && e.fields.file === 'too_large') {
+        error.value = `« ${file.name} » est trop volumineux (max 5 Mo)`
+      } else if (e.status === 422 && e.fields.file === 'unsupported_mime') {
+        error.value = `« ${file.name} » : type non supporté (JPG/PNG/WebP/GIF uniquement)`
+      } else if (e.status === 401) {
+        error.value = 'Tu dois être admin pour uploader.'
+      } else {
+        error.value = e.payload.message ?? `Échec de l'upload de « ${file.name} »`
+      }
+    } else {
+      error.value = `Erreur réseau pendant l'upload de « ${file.name} »`
+    }
+  }
+}
+
+async function processFiles(files: FileList | File[]) {
+  error.value = null
+  const list = Array.from(files).filter(f => f.type.startsWith('image/'))
+  if (list.length === 0) {
+    error.value = "Aucun fichier image dans la sélection."
+    return
+  }
+  uploading.value = true
+  queueSize.value = list.length
+  queueDone.value = 0
+  for (const f of list) {
+    await uploadOne(f)
+    queueDone.value++
+  }
+  uploading.value = false
+  caption.value = ''   // reset après une session d'upload
+  if (fileInput.value) fileInput.value.value = ''
+}
+
+function onFileChange(e: Event) {
+  const target = e.target as HTMLInputElement
+  if (target.files) processFiles(target.files)
+}
+
+function onDrop(e: DragEvent) {
+  e.preventDefault()
+  dragOver.value = false
+  if (e.dataTransfer?.files) processFiles(e.dataTransfer.files)
+}
+</script>
+
+<template>
+  <div>
+    <div
+      class="rounded-lg border-2 border-dashed transition-colors p-5 text-center cursor-pointer"
+      :class="dragOver ? 'border-donut-text bg-gray-50' : 'border-donut-border hover:border-gray-400 hover:bg-gray-50'"
+      @click="fileInput?.click()"
+      @dragenter.prevent="dragOver = true"
+      @dragover.prevent="dragOver = true"
+      @dragleave="dragOver = false"
+      @drop="onDrop"
+    >
+      <svg viewBox="0 0 24 24" class="w-7 h-7 mx-auto text-donut-muted" fill="none" stroke="currentColor" stroke-width="1.8" stroke-linecap="round" stroke-linejoin="round">
+        <rect x="3" y="3" width="18" height="18" rx="2"/>
+        <circle cx="9" cy="9" r="2"/>
+        <path d="m21 15-3.086-3.086a2 2 0 0 0-2.828 0L6 21"/>
+      </svg>
+      <div class="mt-2 text-sm text-donut-text">
+        <span class="font-medium">Déposer des images ici</span> ou cliquer pour parcourir
+      </div>
+      <div class="mt-0.5 text-xs text-donut-muted">JPG / PNG / WebP / GIF — 5 Mo max</div>
+      <input
+        ref="fileInput"
+        type="file"
+        :accept="ACCEPT"
+        multiple
+        class="hidden"
+        @change="onFileChange"
+      />
+    </div>
+
+    <div class="mt-2 flex items-center gap-2">
+      <input
+        v-model="caption"
+        type="text"
+        placeholder="Légende commune à cette série (optionnel)"
+        class="flex-1 bg-donut-surface border border-donut-border rounded-md px-2.5 py-1.5 text-xs outline-none focus:border-donut-text"
+      />
+    </div>
+
+    <div v-if="uploading" class="mt-2 flex items-center gap-2 text-xs text-donut-muted">
+      <svg viewBox="0 0 24 24" class="w-3.5 h-3.5 animate-spin" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round">
+        <path d="M21 12a9 9 0 1 1-6.219-8.56" />
+      </svg>
+      Upload {{ queueDone + 1 }}/{{ queueSize }}…
+    </div>
+
+    <div v-if="error" class="mt-2 rounded-md border border-red-200 bg-red-50 text-red-700 px-2.5 py-1.5 text-xs">
+      {{ error }}
+    </div>
+  </div>
+</template>
diff --git a/frontend/src/pages/AdminLoginPage.vue b/frontend/src/pages/AdminLoginPage.vue
index 61287c4..128d9f3 100644
--- a/frontend/src/pages/AdminLoginPage.vue
+++ b/frontend/src/pages/AdminLoginPage.vue
@@ -1,11 +1,22 @@
 <script setup lang="ts">
 import { ref } from 'vue'
-import { useRouter } from 'vue-router'
+import { useRoute, useRouter } from 'vue-router'
 import { api, ApiError } from '@/api/client'
 import { useAuth } from '@/composables/useAuth'
 
 const router = useRouter()
+const route = useRoute()
 const { login, isAuthenticated, logout } = useAuth()
+
+// Après login, on retourne à `next` si fourni (cas où l'utilisateur a tenté
+// d'accéder à /admin/X sans token et a été redirigé ici).
+function postLoginTarget(): { name: string } | string {
+  const next = route.query.next
+  if (typeof next === 'string' && next.startsWith('/') && next !== '/admin/login') {
+    return next
+  }
+  return { name: 'admin-overview' }
+}
 const token = ref('')
 const submitting = ref(false)
 const error = ref<string | null>(null)
@@ -19,12 +30,10 @@ async function submit() {
   // Si 401 -> on l'efface et on affiche l'erreur. Si OK -> on redirige.
   login(t)
   try {
-    // Le plus léger : POST sur une route protégée avec un body invalide volontairement
-    // pour récupérer 422 (auth OK) ou 401 (auth KO) sans créer de ressource.
-    // Mais c'est sale. Mieux : faire un GET protégé. On n'a pas de "whoami".
-    // Solution : POST /api/members avec body vide -> renvoie 422 si admin OK, 401 sinon.
+    // L'API n'a pas de route "whoami". Trick : POST /api/members avec body vide
+    // -> renvoie 422 si l'auth est OK (validation_failed), 401 si le token est faux.
     await api.post('/api/members', {})
-    router.push({ name: 'dashboard' })
+    router.push(postLoginTarget())
   } catch (e) {
     if (e instanceof ApiError) {
       if (e.status === 401) {
@@ -32,7 +41,7 @@ async function submit() {
         error.value = 'Token invalide.'
       } else {
         // 422 (validation_failed) signifie que l'auth est OK, on continue.
-        router.push({ name: 'dashboard' })
+        router.push(postLoginTarget())
       }
     } else {
       logout()
diff --git a/frontend/src/pages/ProjectDetailPage.vue b/frontend/src/pages/ProjectDetailPage.vue
index 5b1eea3..8e4a35f 100644
--- a/frontend/src/pages/ProjectDetailPage.vue
+++ b/frontend/src/pages/ProjectDetailPage.vue
@@ -12,6 +12,7 @@ import Avatar from '@/components/Avatar.vue'
 import LoadingState from '@/components/LoadingState.vue'
 import ErrorState from '@/components/ErrorState.vue'
 import JoinProjectModal from '@/components/JoinProjectModal.vue'
+import ImageGallery from '@/components/ImageGallery.vue'
 import { formatDate, formatMonthYear, formatRelative } from '@/utils/formatDate'
 
 const props = defineProps<{ slug: string }>()
@@ -24,7 +25,7 @@ const loading = ref(true)
 const error = ref<string | null>(null)
 
 // Tabs
-type Tab = 'roadmap' | 'discussions' | 'resources'
+type Tab = 'roadmap' | 'discussions' | 'resources' | 'images'
 const activeTab = ref<Tab>('roadmap')
 
 // Discussions et resources : lazy-loaded au 1er affichage du tab.
@@ -302,7 +303,7 @@ const ROLE_LABEL = { admin: 'Admin', contributor: 'Contributor', observer: 'Obse
         <div class="border-b border-donut-border">
           <nav class="flex items-center gap-6 -mb-px" role="tablist">
             <button
-              v-for="tab in (['roadmap', 'discussions', 'resources'] as const)"
+              v-for="tab in (['roadmap', 'images', 'discussions', 'resources'] as const)"
               :key="tab"
               type="button"
               role="tab"
@@ -321,6 +322,12 @@ const ROLE_LABEL = { admin: 'Admin', contributor: 'Contributor', observer: 'Obse
                 </svg>
                 Feuille de route
               </span>
+              <span v-else-if="tab === 'images'" class="inline-flex items-center gap-2">
+                <svg viewBox="0 0 24 24" class="w-4 h-4" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+                  <rect x="3" y="3" width="18" height="18" rx="2"/><circle cx="9" cy="9" r="2"/><path d="m21 15-3.086-3.086a2 2 0 0 0-2.828 0L6 21"/>
+                </svg>
+                Images
+              </span>
               <span v-else-if="tab === 'discussions'" class="inline-flex items-center gap-2">
                 <svg viewBox="0 0 24 24" class="w-4 h-4" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                   <path d="M21 15a2 2 0 0 1-2 2H7l-4 4V5a2 2 0 0 1 2-2h14a2 2 0 0 1 2 2z"/>
@@ -415,6 +422,11 @@ const ROLE_LABEL = { admin: 'Admin', contributor: 'Contributor', observer: 'Obse
           </form>
         </div>
 
+        <!-- Tab : Images -->
+        <div v-else-if="activeTab === 'images'">
+          <ImageGallery :project-slug="project.slug" />
+        </div>
+
         <!-- Tab : Discussions -->
         <div v-else-if="activeTab === 'discussions'" class="space-y-4">
           <LoadingState v-if="discussionsLoading" />
diff --git a/frontend/src/pages/admin/AdminCategoriesPage.vue b/frontend/src/pages/admin/AdminCategoriesPage.vue
new file mode 100644
index 0000000..ba39258
--- /dev/null
+++ b/frontend/src/pages/admin/AdminCategoriesPage.vue
@@ -0,0 +1,110 @@
+<script setup lang="ts">
+import { ref, onMounted } from 'vue'
+import { api, ApiError } from '@/api/client'
+import type { Category, Stats, Wrapped } from '@/types/api'
+import AdminSubNav from '@/components/AdminSubNav.vue'
+import LoadingState from '@/components/LoadingState.vue'
+import ErrorState from '@/components/ErrorState.vue'
+
+const categories = ref<Category[]>([])
+const counts = ref<Record<string, number>>({})
+const loading = ref(true)
+const error = ref<string | null>(null)
+
+async function load() {
+  loading.value = true
+  error.value = null
+  try {
+    const [cats, stats] = await Promise.all([
+      api.get<Wrapped<Category>>('/api/categories'),
+      api.get<Stats>('/api/stats'),
+    ])
+    categories.value = cats.data
+    counts.value = Object.fromEntries(stats.by_category.map(c => [c.slug, c.count]))
+  } catch (e) {
+    error.value = e instanceof ApiError ? (e.payload.message ?? e.code) : 'Erreur réseau'
+  } finally {
+    loading.value = false
+  }
+}
+onMounted(load)
+
+const DIMENSION_LABEL = {
+  social: 'Plancher social',
+  ecologique: 'Plafond écologique',
+  transversal: 'Transversal',
+} as const
+
+async function destroy(c: Category) {
+  const count = counts.value[c.slug] ?? 0
+  if (count > 0) {
+    alert(`Impossible de supprimer "${c.name}" : ${count} projet(s) utilise(nt) cette catégorie.\nDéplace-les ou archive-les d'abord.`)
+    return
+  }
+  if (!confirm(`Supprimer la catégorie "${c.name}" ?`)) return
+  try {
+    await api.delete(`/api/categories/${encodeURIComponent(c.slug)}`)
+    categories.value = categories.value.filter(x => x.id !== c.id)
+  } catch (e) {
+    if (e instanceof ApiError) alert(`Erreur : ${e.payload.message ?? e.code}`)
+  }
+}
+</script>
+
+<template>
+  <section class="px-10 py-8 max-w-7xl">
+    <header class="mb-6">
+      <h1 class="text-3xl font-semibold text-donut-text">Administration</h1>
+      <p class="text-donut-muted mt-1">Catégories thématiques du Donut.</p>
+    </header>
+    <AdminSubNav />
+
+    <LoadingState v-if="loading" class="mt-8" />
+    <ErrorState v-else-if="error" :message="error" :retry="load" class="mt-8" />
+
+    <div v-else class="mt-6 rounded-xl border border-donut-border bg-donut-surface overflow-hidden">
+      <table class="w-full text-sm">
+        <thead class="bg-gray-50 border-b border-donut-border text-xs uppercase tracking-wider text-donut-muted">
+          <tr>
+            <th class="text-left px-4 py-3 font-medium">Catégorie</th>
+            <th class="text-left px-4 py-3 font-medium">Dimension</th>
+            <th class="text-left px-4 py-3 font-medium">Couleur</th>
+            <th class="text-right px-4 py-3 font-medium">Ordre</th>
+            <th class="text-right px-4 py-3 font-medium">Projets</th>
+            <th class="text-right px-4 py-3 font-medium">Actions</th>
+          </tr>
+        </thead>
+        <tbody>
+          <tr
+            v-for="c in [...categories].sort((a, b) => a.sort_order - b.sort_order)"
+            :key="c.id"
+            class="border-t border-donut-border hover:bg-gray-50"
+          >
+            <td class="px-4 py-3">
+              <div class="font-medium text-donut-text">{{ c.name }}</div>
+              <div v-if="c.description" class="text-xs text-donut-muted truncate max-w-md">{{ c.description }}</div>
+            </td>
+            <td class="px-4 py-3 text-donut-muted">{{ DIMENSION_LABEL[c.dimension] }}</td>
+            <td class="px-4 py-3">
+              <div class="flex items-center gap-2">
+                <span class="w-5 h-5 rounded-md shrink-0" :style="{ background: c.color_hex }" />
+                <code class="text-xs">{{ c.color_hex }}</code>
+              </div>
+            </td>
+            <td class="px-4 py-3 text-right tabular-nums">{{ c.sort_order }}</td>
+            <td class="px-4 py-3 text-right tabular-nums">{{ counts[c.slug] ?? 0 }}</td>
+            <td class="px-4 py-3 text-right">
+              <button
+                type="button"
+                class="text-red-500 hover:text-red-700 text-xs font-medium disabled:opacity-30"
+                :disabled="(counts[c.slug] ?? 0) > 0"
+                :title="(counts[c.slug] ?? 0) > 0 ? 'Catégorie utilisée par des projets' : 'Supprimer'"
+                @click="destroy(c)"
+              >Supprimer</button>
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+  </section>
+</template>
diff --git a/frontend/src/pages/admin/AdminMembersPage.vue b/frontend/src/pages/admin/AdminMembersPage.vue
new file mode 100644
index 0000000..db6147b
--- /dev/null
+++ b/frontend/src/pages/admin/AdminMembersPage.vue
@@ -0,0 +1,128 @@
+<script setup lang="ts">
+import { ref, computed, onMounted } from 'vue'
+import { RouterLink } from 'vue-router'
+import { api, ApiError } from '@/api/client'
+import type { Member, Paginated } from '@/types/api'
+import AdminSubNav from '@/components/AdminSubNav.vue'
+import LoadingState from '@/components/LoadingState.vue'
+import ErrorState from '@/components/ErrorState.vue'
+import Avatar from '@/components/Avatar.vue'
+import { formatDate } from '@/utils/formatDate'
+
+const members = ref<Member[]>([])
+const loading = ref(true)
+const error = ref<string | null>(null)
+const searchQ = ref('')
+
+async function load() {
+  loading.value = true
+  error.value = null
+  try {
+    const r = await api.get<Paginated<Member>>('/api/members', { query: { per_page: 100 } })
+    members.value = r.data
+  } catch (e) {
+    error.value = e instanceof ApiError ? (e.payload.message ?? e.code) : 'Erreur réseau'
+  } finally {
+    loading.value = false
+  }
+}
+onMounted(load)
+
+const filtered = computed(() => {
+  if (!searchQ.value.trim()) return members.value
+  const q = searchQ.value.trim().toLowerCase()
+  return members.value.filter(m =>
+    m.display_name.toLowerCase().includes(q) ||
+    (m.bio ?? '').toLowerCase().includes(q),
+  )
+})
+
+async function destroy(m: Member) {
+  if (!confirm(`Supprimer définitivement « ${m.display_name} » ?\nLe membre sera retiré de tous les projets.`)) return
+  try {
+    await api.delete(`/api/members/${encodeURIComponent(m.slug)}`)
+    members.value = members.value.filter(x => x.id !== m.id)
+  } catch (e) {
+    if (e instanceof ApiError) alert(`Erreur : ${e.payload.message ?? e.code}`)
+  }
+}
+
+const KIND_LABEL = {
+  person: 'Personne',
+  collective: 'Collectif',
+  org: 'Organisation',
+} as const
+</script>
+
+<template>
+  <section class="px-10 py-8 max-w-7xl">
+    <header class="mb-6">
+      <h1 class="text-3xl font-semibold text-donut-text">Administration</h1>
+      <p class="text-donut-muted mt-1">Annuaire des membres.</p>
+    </header>
+    <AdminSubNav />
+
+    <div class="mt-6 flex items-center gap-2">
+      <input
+        v-model="searchQ"
+        type="search"
+        placeholder="Rechercher un membre…"
+        class="bg-donut-surface border border-donut-border rounded-lg px-3 py-2 text-sm outline-none focus:border-donut-text w-64"
+      />
+    </div>
+
+    <LoadingState v-if="loading" class="mt-8" />
+    <ErrorState v-else-if="error" :message="error" :retry="load" class="mt-8" />
+
+    <div v-else class="mt-4 rounded-xl border border-donut-border bg-donut-surface overflow-hidden">
+      <table class="w-full text-sm">
+        <thead class="bg-gray-50 border-b border-donut-border text-xs uppercase tracking-wider text-donut-muted">
+          <tr>
+            <th class="text-left px-4 py-3 font-medium">Nom</th>
+            <th class="text-left px-4 py-3 font-medium">Type</th>
+            <th class="text-left px-4 py-3 font-medium">Contact</th>
+            <th class="text-left px-4 py-3 font-medium">Ajouté</th>
+            <th class="text-right px-4 py-3 font-medium">Actions</th>
+          </tr>
+        </thead>
+        <tbody>
+          <tr v-if="filtered.length === 0">
+            <td colspan="5" class="px-4 py-8 text-center text-donut-muted text-sm">
+              Aucun membre.
+            </td>
+          </tr>
+          <tr v-for="m in filtered" :key="m.id" class="border-t border-donut-border hover:bg-gray-50">
+            <td class="px-4 py-3">
+              <div class="flex items-center gap-2.5">
+                <Avatar :name="m.display_name" :initials="m.initials" :avatar-url="m.avatar_url" :size="32" />
+                <div>
+                  <RouterLink
+                    :to="{ name: 'project-detail', params: { slug: m.slug } }"
+                    class="font-medium text-donut-text hover:underline"
+                  >{{ m.display_name }}</RouterLink>
+                  <div v-if="m.bio" class="text-xs text-donut-muted truncate max-w-md">{{ m.bio }}</div>
+                </div>
+              </div>
+            </td>
+            <td class="px-4 py-3 text-donut-muted">{{ KIND_LABEL[m.kind] }}</td>
+            <td class="px-4 py-3 text-donut-muted text-xs">
+              <a v-if="m.contact_email" :href="`mailto:${m.contact_email}`" class="hover:underline">{{ m.contact_email }}</a>
+              <a v-if="m.website_url" :href="m.website_url" target="_blank" rel="noopener" class="hover:underline block">{{ m.website_url }}</a>
+              <span v-if="!m.contact_email && !m.website_url" class="text-donut-muted">—</span>
+            </td>
+            <td class="px-4 py-3 text-donut-muted">{{ formatDate(m.created_at) }}</td>
+            <td class="px-4 py-3 text-right">
+              <button
+                type="button"
+                class="text-red-500 hover:text-red-700 text-xs font-medium"
+                @click="destroy(m)"
+              >Supprimer</button>
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+
+    <p class="mt-4 text-xs text-donut-muted">{{ filtered.length }} membre{{ filtered.length > 1 ? 's' : '' }}.</p>
+  </section>
+</template>
diff --git a/frontend/src/pages/admin/AdminOverviewPage.vue b/frontend/src/pages/admin/AdminOverviewPage.vue
new file mode 100644
index 0000000..f89c54d
--- /dev/null
+++ b/frontend/src/pages/admin/AdminOverviewPage.vue
@@ -0,0 +1,99 @@
+<script setup lang="ts">
+import { ref, onMounted } from 'vue'
+import { RouterLink } from 'vue-router'
+import { api, ApiError } from '@/api/client'
+import type { ActivityEvent, Stats, Wrapped } from '@/types/api'
+import AdminSubNav from '@/components/AdminSubNav.vue'
+import LoadingState from '@/components/LoadingState.vue'
+import ErrorState from '@/components/ErrorState.vue'
+import { formatRelative } from '@/utils/formatDate'
+
+const stats = ref<Stats | null>(null)
+const activity = ref<ActivityEvent[]>([])
+const loading = ref(true)
+const error = ref<string | null>(null)
+
+async function load() {
+  loading.value = true
+  error.value = null
+  try {
+    const [s, a] = await Promise.all([
+      api.get<Stats>('/api/stats'),
+      api.get<Wrapped<ActivityEvent>>('/api/activity', { query: { limit: 15 } }),
+    ])
+    stats.value = s
+    activity.value = a.data
+  } catch (e) {
+    error.value = e instanceof ApiError ? (e.payload.message ?? e.code) : 'Erreur réseau'
+  } finally {
+    loading.value = false
+  }
+}
+onMounted(load)
+</script>
+
+<template>
+  <section class="px-10 py-8 max-w-7xl">
+    <header class="mb-6">
+      <h1 class="text-3xl font-semibold text-donut-text">Administration</h1>
+      <p class="text-donut-muted mt-1">Vue d'ensemble du Donut Infolab — gestion des projets, membres et catégories.</p>
+    </header>
+    <AdminSubNav />
+
+    <LoadingState v-if="loading" class="mt-8" />
+    <ErrorState v-else-if="error" :message="error" :retry="load" class="mt-8" />
+
+    <div v-else class="mt-8 space-y-6">
+      <!-- KPI -->
+      <div class="grid grid-cols-2 sm:grid-cols-4 gap-4">
+        <RouterLink
+          v-for="kpi in [
+            { label: 'Projets actifs',     value: stats?.projects_active     ?? 0, to: '/admin/projects', color: '#F97316' },
+            { label: 'Projets réalisés',   value: stats?.projects_completed  ?? 0, to: '/admin/projects', color: '#A855F7' },
+            { label: 'Archives',           value: stats?.projects_archived   ?? 0, to: '/admin/projects', color: '#6B7280' },
+            { label: 'Participants',       value: stats?.participants_total  ?? 0, to: '/admin/members',  color: '#EF4444' },
+          ]"
+          :key="kpi.label"
+          :to="kpi.to"
+          class="rounded-xl border border-donut-border bg-donut-surface p-5 hover:shadow-md transition-shadow"
+        >
+          <div class="flex items-center gap-2">
+            <span class="w-2 h-2 rounded-full" :style="{ background: kpi.color }" />
+            <div class="text-sm text-donut-muted">{{ kpi.label }}</div>
+          </div>
+          <div class="mt-2 text-3xl font-semibold text-donut-text tabular-nums">{{ kpi.value }}</div>
+        </RouterLink>
+      </div>
+
+      <!-- Répartition par catégorie -->
+      <div class="rounded-xl border border-donut-border bg-donut-surface p-5">
+        <h2 class="text-base font-semibold text-donut-text mb-3">Répartition des projets par catégorie</h2>
+        <ul class="space-y-2">
+          <li v-for="c in stats?.by_category" :key="c.slug" class="flex items-center gap-3">
+            <span class="w-2.5 h-2.5 rounded-full shrink-0" :style="{ background: c.color_hex }" />
+            <RouterLink
+              :to="{ name: 'projects', query: { category: c.slug } }"
+              class="flex-1 text-sm text-donut-text hover:underline truncate"
+            >{{ c.name }}</RouterLink>
+            <span class="text-sm text-donut-muted tabular-nums">{{ c.count }} projet{{ c.count > 1 ? 's' : '' }}</span>
+          </li>
+        </ul>
+      </div>
+
+      <!-- Flux d'activité -->
+      <div class="rounded-xl border border-donut-border bg-donut-surface p-5">
+        <h2 class="text-base font-semibold text-donut-text mb-3">Activité récente</h2>
+        <ul v-if="activity.length" class="space-y-2.5">
+          <li v-for="a in activity" :key="a.id" class="flex items-start gap-3 text-sm">
+            <span class="mt-1.5 w-2 h-2 rounded-full bg-status-active shrink-0" aria-hidden="true" />
+            <div class="flex-1 min-w-0">
+              <span class="text-donut-text">{{ a.summary }}</span>
+              <span class="text-donut-muted text-xs ml-2">— {{ formatRelative(a.occurred_at) }}</span>
+            </div>
+          </li>
+        </ul>
+        <p v-else class="text-sm text-donut-muted">Aucune activité récente.</p>
+      </div>
+    </div>
+  </section>
+</template>
diff --git a/frontend/src/pages/admin/AdminProjectEditPage.vue b/frontend/src/pages/admin/AdminProjectEditPage.vue
new file mode 100644
index 0000000..c0dec10
--- /dev/null
+++ b/frontend/src/pages/admin/AdminProjectEditPage.vue
@@ -0,0 +1,275 @@
+<script setup lang="ts">
+import { ref, onMounted, computed } from 'vue'
+import { RouterLink, useRouter } from 'vue-router'
+import { api, ApiError } from '@/api/client'
+import { useAuth } from '@/composables/useAuth'
+import type { Category, ProjectDetail, Wrapped } from '@/types/api'
+import AdminSubNav from '@/components/AdminSubNav.vue'
+import LoadingState from '@/components/LoadingState.vue'
+import ErrorState from '@/components/ErrorState.vue'
+
+const props = defineProps<{ slug: string }>()
+const router = useRouter()
+const { isAuthenticated } = useAuth()
+
+const project = ref<ProjectDetail | null>(null)
+const categories = ref<Category[]>([])
+const loading = ref(true)
+const loadError = ref<string | null>(null)
+
+const form = ref({
+  title: '',
+  slug: '',
+  category_id: 0 as number,
+  status: 'active' as ProjectDetail['status'],
+  territory: 'Marseille',
+  short_description: '',
+  context_description: '',
+  objectives: '',
+  cover_image_url: '',
+  external_url: '',
+  progress_percent: 0,
+})
+const submitting = ref(false)
+const fieldErrors = ref<Record<string, string>>({})
+const generalError = ref<string | null>(null)
+
+async function load() {
+  loading.value = true
+  loadError.value = null
+  try {
+    const [p, cats] = await Promise.all([
+      api.get<ProjectDetail>(`/api/projects/${encodeURIComponent(props.slug)}`),
+      api.get<Wrapped<Category>>('/api/categories'),
+    ])
+    project.value = p
+    categories.value = cats.data
+    // Préremplit le formulaire avec les valeurs du projet
+    form.value = {
+      title: p.title,
+      slug: p.slug,
+      category_id: p.category?.id ?? 0,
+      status: p.status,
+      territory: p.territory,
+      short_description: p.short_description ?? '',
+      context_description: p.context_description ?? '',
+      objectives: p.objectives ?? '',
+      cover_image_url: p.cover_image_url ?? '',
+      external_url: p.external_url ?? '',
+      progress_percent: p.progress_percent,
+    }
+  } catch (e) {
+    loadError.value = e instanceof ApiError ? (e.payload.message ?? e.code) : 'Erreur réseau'
+  } finally {
+    loading.value = false
+  }
+}
+onMounted(load)
+
+const slugChanged = computed(() => project.value !== null && form.value.slug !== project.value.slug)
+
+async function submit() {
+  fieldErrors.value = {}
+  generalError.value = null
+  if (!isAuthenticated.value) {
+    generalError.value = "Tu dois être connecté en admin."
+    return
+  }
+  if (!project.value) return
+
+  submitting.value = true
+  try {
+    // Construit le diff : on n'envoie que ce qui a changé.
+    const diff: Record<string, unknown> = {}
+    const p = project.value
+    if (form.value.title.trim() !== p.title) diff.title = form.value.title.trim()
+    if (slugChanged.value)                  diff.slug = form.value.slug.trim()
+    if (form.value.category_id !== (p.category?.id ?? 0)) diff.category_id = form.value.category_id
+    if (form.value.status !== p.status)     diff.status = form.value.status
+    if (form.value.territory.trim() !== p.territory) diff.territory = form.value.territory.trim()
+    if (form.value.short_description !== (p.short_description ?? '')) diff.short_description = form.value.short_description || null
+    if (form.value.context_description !== (p.context_description ?? '')) diff.context_description = form.value.context_description || null
+    if (form.value.objectives !== (p.objectives ?? '')) diff.objectives = form.value.objectives || null
+    if (form.value.cover_image_url !== (p.cover_image_url ?? '')) diff.cover_image_url = form.value.cover_image_url || null
+    if (form.value.external_url !== (p.external_url ?? '')) diff.external_url = form.value.external_url || null
+    if (form.value.progress_percent !== p.progress_percent) diff.progress_percent = form.value.progress_percent
+
+    if (Object.keys(diff).length === 0) {
+      generalError.value = 'Aucune modification à enregistrer.'
+      submitting.value = false
+      return
+    }
+
+    const updated = await api.patch<ProjectDetail>(`/api/projects/${encodeURIComponent(p.slug)}`, diff)
+    router.push({ name: 'admin-projects' })
+    // Si l'utilisateur a changé le slug et reste sur cette page, mettre à jour
+    project.value = updated
+  } catch (e) {
+    if (e instanceof ApiError) {
+      if (e.status === 422) {
+        fieldErrors.value = e.fields
+      } else if (e.status === 401) {
+        generalError.value = 'Session admin expirée. Reconnecte-toi.'
+      } else {
+        generalError.value = e.payload.message ?? e.code
+      }
+    } else {
+      generalError.value = 'Erreur réseau'
+    }
+  } finally {
+    submitting.value = false
+  }
+}
+</script>
+
+<template>
+  <section class="px-10 py-8 max-w-4xl">
+    <header class="mb-6">
+      <h1 class="text-3xl font-semibold text-donut-text">Administration</h1>
+      <p class="text-donut-muted mt-1">Édition d'un projet.</p>
+    </header>
+    <AdminSubNav />
+
+    <LoadingState v-if="loading" class="mt-8" />
+    <ErrorState v-else-if="loadError" :message="loadError" :retry="load" class="mt-8" />
+
+    <div v-else-if="project" class="mt-6 space-y-4">
+      <RouterLink :to="{ name: 'admin-projects' }" class="inline-flex items-center gap-1.5 text-sm text-donut-muted hover:text-donut-text">
+        <svg viewBox="0 0 24 24" class="w-4 h-4" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+          <path d="m12 19-7-7 7-7M5 12h14"/>
+        </svg>
+        Retour à la liste
+      </RouterLink>
+
+      <form @submit.prevent="submit" class="rounded-xl border border-donut-border bg-donut-surface p-6 space-y-5">
+        <header class="border-b border-donut-border pb-4">
+          <h2 class="text-base font-semibold text-donut-text">{{ project.title }}</h2>
+          <p class="text-sm text-donut-muted mt-0.5">Édition du projet — les champs envoyés sont ceux qui ont changé.</p>
+        </header>
+
+        <div>
+          <label class="block text-sm font-medium text-donut-text mb-1">Titre du projet *</label>
+          <input
+            v-model="form.title" type="text"
+            class="w-full bg-white border border-donut-border rounded-lg px-3 py-2.5 text-sm outline-none focus:border-donut-text"
+            :class="fieldErrors.title ? 'border-red-400' : ''"
+          />
+          <p v-if="fieldErrors.title" class="text-xs text-red-600 mt-1">Titre requis.</p>
+        </div>
+
+        <div class="grid grid-cols-1 sm:grid-cols-2 gap-4">
+          <div>
+            <label class="block text-sm font-medium text-donut-text mb-1">Slug</label>
+            <input
+              v-model="form.slug" type="text"
+              class="w-full bg-white border border-donut-border rounded-lg px-3 py-2.5 text-sm font-mono outline-none focus:border-donut-text"
+              :class="fieldErrors.slug ? 'border-red-400' : ''"
+            />
+            <p class="text-xs text-donut-muted mt-1">Modifier change l'URL publique du projet.</p>
+          </div>
+          <div>
+            <label class="block text-sm font-medium text-donut-text mb-1">Statut</label>
+            <select
+              v-model="form.status"
+              class="w-full bg-white border border-donut-border rounded-lg px-3 py-2.5 text-sm outline-none focus:border-donut-text"
+            >
+              <option value="active">Actif</option>
+              <option value="completed">Réalisé</option>
+              <option value="archived">Archivé</option>
+            </select>
+          </div>
+        </div>
+
+        <div class="grid grid-cols-1 sm:grid-cols-2 gap-4">
+          <div>
+            <label class="block text-sm font-medium text-donut-text mb-1">Catégorie *</label>
+            <select
+              v-model="form.category_id"
+              class="w-full bg-white border border-donut-border rounded-lg px-3 py-2.5 text-sm outline-none focus:border-donut-text"
+              :class="fieldErrors.category_id ? 'border-red-400' : ''"
+            >
+              <option v-for="c in categories" :key="c.id" :value="c.id">{{ c.name }}</option>
+            </select>
+          </div>
+          <div>
+            <label class="block text-sm font-medium text-donut-text mb-1">Territoire</label>
+            <input
+              v-model="form.territory" type="text"
+              class="w-full bg-white border border-donut-border rounded-lg px-3 py-2.5 text-sm outline-none focus:border-donut-text"
+            />
+          </div>
+        </div>
+
+        <div>
+          <label class="block text-sm font-medium text-donut-text mb-1">Progression : {{ form.progress_percent }} %</label>
+          <input
+            v-model.number="form.progress_percent" type="range" min="0" max="100" step="5"
+            class="w-full"
+          />
+        </div>
+
+        <div>
+          <label class="block text-sm font-medium text-donut-text mb-1">Description courte</label>
+          <textarea
+            v-model="form.short_description" rows="2"
+            class="w-full bg-white border border-donut-border rounded-lg px-3 py-2.5 text-sm outline-none focus:border-donut-text resize-y"
+          />
+        </div>
+
+        <div>
+          <label class="block text-sm font-medium text-donut-text mb-1">Description complète</label>
+          <textarea
+            v-model="form.context_description" rows="5"
+            class="w-full bg-white border border-donut-border rounded-lg px-3 py-2.5 text-sm outline-none focus:border-donut-text resize-y"
+          />
+        </div>
+
+        <div>
+          <label class="block text-sm font-medium text-donut-text mb-1">Objectifs</label>
+          <textarea
+            v-model="form.objectives" rows="3"
+            class="w-full bg-white border border-donut-border rounded-lg px-3 py-2.5 text-sm outline-none focus:border-donut-text resize-y"
+          />
+        </div>
+
+        <div class="grid grid-cols-1 sm:grid-cols-2 gap-4">
+          <div>
+            <label class="block text-sm font-medium text-donut-text mb-1">Image de cover (URL)</label>
+            <input
+              v-model="form.cover_image_url" type="url"
+              placeholder="https://…"
+              class="w-full bg-white border border-donut-border rounded-lg px-3 py-2.5 text-sm outline-none focus:border-donut-text"
+            />
+            <p class="text-xs text-donut-muted mt-1">Pour une galerie complète, voir l'onglet Images sur la fiche projet.</p>
+          </div>
+          <div>
+            <label class="block text-sm font-medium text-donut-text mb-1">URL externe</label>
+            <input
+              v-model="form.external_url" type="url"
+              placeholder="https://…"
+              class="w-full bg-white border border-donut-border rounded-lg px-3 py-2.5 text-sm outline-none focus:border-donut-text"
+            />
+          </div>
+        </div>
+
+        <div v-if="generalError" class="rounded-lg border border-red-200 bg-red-50 text-red-700 px-3 py-2 text-sm">
+          {{ generalError }}
+        </div>
+
+        <div class="flex items-center justify-end gap-2 pt-2 border-t border-donut-border">
+          <RouterLink
+            :to="{ name: 'admin-projects' }"
+            class="px-4 py-2 rounded-lg text-sm font-medium border border-donut-border hover:bg-gray-50"
+          >Annuler</RouterLink>
+          <button
+            type="submit"
+            :disabled="submitting"
+            class="px-4 py-2 rounded-lg bg-donut-text text-white text-sm font-medium hover:bg-black disabled:opacity-50"
+          >
+            {{ submitting ? 'Enregistrement…' : 'Enregistrer' }}
+          </button>
+        </div>
+      </form>
+    </div>
+  </section>
+</template>
diff --git a/frontend/src/pages/admin/AdminProjectsPage.vue b/frontend/src/pages/admin/AdminProjectsPage.vue
new file mode 100644
index 0000000..ae0adbe
--- /dev/null
+++ b/frontend/src/pages/admin/AdminProjectsPage.vue
@@ -0,0 +1,199 @@
+<script setup lang="ts">
+import { ref, computed, onMounted } from 'vue'
+import { RouterLink } from 'vue-router'
+import { api, ApiError } from '@/api/client'
+import type { Category, Paginated, ProjectListRow, ProjectStatus, Wrapped } from '@/types/api'
+import AdminSubNav from '@/components/AdminSubNav.vue'
+import LoadingState from '@/components/LoadingState.vue'
+import ErrorState from '@/components/ErrorState.vue'
+import StatusBadge from '@/components/StatusBadge.vue'
+import CategoryBadge from '@/components/CategoryBadge.vue'
+import { formatDate } from '@/utils/formatDate'
+
+const projects = ref<ProjectListRow[]>([])
+const categories = ref<Category[]>([])
+const loading = ref(true)
+const error = ref<string | null>(null)
+
+const filterStatus = ref<'' | ProjectStatus>('')
+const filterCategory = ref('')
+const searchQ = ref('')
+
+async function load() {
+  loading.value = true
+  error.value = null
+  try {
+    const [projs, cats] = await Promise.all([
+      api.get<Paginated<ProjectListRow>>('/api/projects', { query: { per_page: 100 } }),
+      api.get<Wrapped<Category>>('/api/categories'),
+    ])
+    projects.value = projs.data
+    categories.value = cats.data
+  } catch (e) {
+    error.value = e instanceof ApiError ? (e.payload.message ?? e.code) : 'Erreur réseau'
+  } finally {
+    loading.value = false
+  }
+}
+onMounted(load)
+
+const filtered = computed(() => {
+  let r = projects.value
+  if (filterStatus.value) r = r.filter(p => p.status === filterStatus.value)
+  if (filterCategory.value) r = r.filter(p => p.category.slug === filterCategory.value)
+  if (searchQ.value.trim()) {
+    const q = searchQ.value.trim().toLowerCase()
+    r = r.filter(p =>
+      p.title.toLowerCase().includes(q) ||
+      (p.short_description ?? '').toLowerCase().includes(q),
+    )
+  }
+  return r
+})
+
+async function destroy(p: ProjectListRow) {
+  if (!confirm(`Supprimer le projet « ${p.title} » ?\n(Soft delete, le projet sera retiré des listes publiques.)`)) return
+  try {
+    await api.delete(`/api/projects/${encodeURIComponent(p.slug)}`)
+    projects.value = projects.value.filter(x => x.id !== p.id)
+  } catch (e) {
+    if (e instanceof ApiError) alert(`Erreur : ${e.payload.message ?? e.code}`)
+    else alert('Erreur réseau')
+  }
+}
+
+async function archive(p: ProjectListRow) {
+  if (!confirm(`Archiver le projet « ${p.title} » ?`)) return
+  try {
+    await api.patch<ProjectListRow>(`/api/projects/${encodeURIComponent(p.slug)}`, { status: 'archived' })
+    p.status = 'archived'
+  } catch (e) {
+    if (e instanceof ApiError) alert(`Erreur : ${e.payload.message ?? e.code}`)
+  }
+}
+
+async function unarchive(p: ProjectListRow) {
+  try {
+    await api.patch<ProjectListRow>(`/api/projects/${encodeURIComponent(p.slug)}`, { status: 'active' })
+    p.status = 'active'
+  } catch (e) {
+    if (e instanceof ApiError) alert(`Erreur : ${e.payload.message ?? e.code}`)
+  }
+}
+</script>
+
+<template>
+  <section class="px-10 py-8 max-w-7xl">
+    <header class="mb-6">
+      <h1 class="text-3xl font-semibold text-donut-text">Administration</h1>
+      <p class="text-donut-muted mt-1">Vue d'ensemble du Donut Infolab — gestion des projets, membres et catégories.</p>
+    </header>
+    <AdminSubNav />
+
+    <div class="mt-6 flex items-end justify-between gap-4 flex-wrap">
+      <div class="flex items-center gap-2 flex-wrap">
+        <input
+          v-model="searchQ"
+          type="search"
+          placeholder="Rechercher un projet…"
+          class="bg-donut-surface border border-donut-border rounded-lg px-3 py-2 text-sm outline-none focus:border-donut-text w-64"
+        />
+        <select
+          v-model="filterStatus"
+          class="bg-donut-surface border border-donut-border rounded-lg px-3 py-2 text-sm outline-none focus:border-donut-text"
+        >
+          <option value="">Tous statuts</option>
+          <option value="active">Actifs</option>
+          <option value="completed">Réalisés</option>
+          <option value="archived">Archivés</option>
+        </select>
+        <select
+          v-model="filterCategory"
+          class="bg-donut-surface border border-donut-border rounded-lg px-3 py-2 text-sm outline-none focus:border-donut-text"
+        >
+          <option value="">Toutes catégories</option>
+          <option v-for="c in categories" :key="c.id" :value="c.slug">{{ c.name }}</option>
+        </select>
+      </div>
+      <RouterLink
+        :to="{ name: 'project-new' }"
+        class="flex items-center gap-1.5 bg-donut-text text-white rounded-lg px-3.5 py-2 text-sm font-medium hover:bg-black transition-colors"
+      >
+        <svg viewBox="0 0 24 24" class="w-4 h-4" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round">
+          <path d="M12 5v14M5 12h14" />
+        </svg>
+        Nouveau projet
+      </RouterLink>
+    </div>
+
+    <LoadingState v-if="loading" class="mt-8" />
+    <ErrorState v-else-if="error" :message="error" :retry="load" class="mt-8" />
+
+    <div v-else class="mt-4 rounded-xl border border-donut-border bg-donut-surface overflow-hidden">
+      <table class="w-full text-sm">
+        <thead class="bg-gray-50 border-b border-donut-border text-xs uppercase tracking-wider text-donut-muted">
+          <tr>
+            <th class="text-left px-4 py-3 font-medium">Titre</th>
+            <th class="text-left px-4 py-3 font-medium">Catégorie</th>
+            <th class="text-left px-4 py-3 font-medium">Statut</th>
+            <th class="text-right px-4 py-3 font-medium tabular-nums">Progression</th>
+            <th class="text-left px-4 py-3 font-medium">Créé</th>
+            <th class="text-right px-4 py-3 font-medium">Actions</th>
+          </tr>
+        </thead>
+        <tbody>
+          <tr v-if="filtered.length === 0">
+            <td colspan="6" class="px-4 py-8 text-center text-donut-muted text-sm">
+              Aucun projet ne correspond aux filtres.
+            </td>
+          </tr>
+          <tr
+            v-for="p in filtered" :key="p.id"
+            class="border-t border-donut-border hover:bg-gray-50"
+          >
+            <td class="px-4 py-3">
+              <RouterLink
+                :to="{ name: 'project-detail', params: { slug: p.slug } }"
+                class="font-medium text-donut-text hover:underline"
+              >{{ p.title }}</RouterLink>
+              <div class="text-xs text-donut-muted truncate max-w-md">{{ p.short_description }}</div>
+            </td>
+            <td class="px-4 py-3">
+              <CategoryBadge :name="p.category.name" :color-hex="p.category.color_hex" />
+            </td>
+            <td class="px-4 py-3"><StatusBadge :status="p.status" /></td>
+            <td class="px-4 py-3 text-right tabular-nums">{{ p.progress_percent }}%</td>
+            <td class="px-4 py-3 text-donut-muted">{{ formatDate(p.created_at) }}</td>
+            <td class="px-4 py-3 text-right">
+              <div class="inline-flex items-center gap-2">
+                <RouterLink
+                  :to="{ name: 'admin-project-edit', params: { slug: p.slug } }"
+                  class="text-donut-text hover:underline text-xs font-medium"
+                >Éditer</RouterLink>
+                <button
+                  v-if="p.status !== 'archived'"
+                  type="button"
+                  class="text-donut-muted hover:text-donut-text text-xs"
+                  @click="archive(p)"
+                >Archiver</button>
+                <button
+                  v-else
+                  type="button"
+                  class="text-donut-muted hover:text-donut-text text-xs"
+                  @click="unarchive(p)"
+                >Réactiver</button>
+                <button
+                  type="button"
+                  class="text-red-500 hover:text-red-700 text-xs font-medium"
+                  @click="destroy(p)"
+                >Supprimer</button>
+              </div>
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+
+    <p class="mt-4 text-xs text-donut-muted">{{ filtered.length }} projet{{ filtered.length > 1 ? 's' : '' }} affiché{{ filtered.length > 1 ? 's' : '' }} sur {{ projects.length }} total.</p>
+  </section>
+</template>
diff --git a/frontend/src/router/index.ts b/frontend/src/router/index.ts
index 5819474..5a02e1a 100644
--- a/frontend/src/router/index.ts
+++ b/frontend/src/router/index.ts
@@ -5,6 +5,19 @@
 
 import { createRouter, createWebHistory, type RouteRecordRaw } from 'vue-router'
 import AppLayout from '@/layouts/AppLayout.vue'
+import { getAdminToken } from '@/api/client'
+
+/**
+ * Guard pour les routes /admin/* (hors /admin/login). Si pas de token Bearer
+ * en localStorage, redirige vers /admin/login (en mémorisant la destination
+ * via query.next pour qu'on y retourne après auth).
+ */
+function requireAdmin(to: { fullPath: string }) {
+  if (!getAdminToken()) {
+    return { name: 'admin-login', query: { next: to.fullPath } }
+  }
+  return true
+}
 
 const routes: RouteRecordRaw[] = [
   {
@@ -19,6 +32,14 @@ const routes: RouteRecordRaw[] = [
       { path: 'projects/:slug', name: 'project-detail', component: () => import('@/pages/ProjectDetailPage.vue'), props: true },
       { path: 'archives', name: 'archives', component: () => import('@/pages/ArchivesPage.vue') },
       { path: 'categories', name: 'categories', component: () => import('@/pages/CategoriesPage.vue') },
+
+      // --- Admin dashboard (token Bearer requis pour toutes les sous-pages sauf /admin/login) ---
+      { path: 'admin', name: 'admin-overview', component: () => import('@/pages/admin/AdminOverviewPage.vue'), beforeEnter: requireAdmin },
+      { path: 'admin/projects', name: 'admin-projects', component: () => import('@/pages/admin/AdminProjectsPage.vue'), beforeEnter: requireAdmin },
+      { path: 'admin/projects/:slug/edit', name: 'admin-project-edit', component: () => import('@/pages/admin/AdminProjectEditPage.vue'), props: true, beforeEnter: requireAdmin },
+      { path: 'admin/members', name: 'admin-members', component: () => import('@/pages/admin/AdminMembersPage.vue'), beforeEnter: requireAdmin },
+      { path: 'admin/categories', name: 'admin-categories', component: () => import('@/pages/admin/AdminCategoriesPage.vue'), beforeEnter: requireAdmin },
+
       { path: 'admin/login', name: 'admin-login', component: () => import('@/pages/AdminLoginPage.vue'), meta: { hideForAuthed: true } },
       { path: ':pathMatch(.*)*', name: 'not-found', component: () => import('@/pages/NotFoundPage.vue') },
     ],
diff --git a/frontend/src/types/api.ts b/frontend/src/types/api.ts
index c0fdc62..43b3ab2 100644
--- a/frontend/src/types/api.ts
+++ b/frontend/src/types/api.ts
@@ -157,6 +157,22 @@ export interface Resource {
   updated_at: string
 }
 
+export interface ProjectImage {
+  id: number
+  project_id: number
+  url: string
+  caption: string | null
+  sort_order: number
+  /** Présent si upload disque, null si URL externe. */
+  storage_path: string | null
+  mime_type: string | null
+  size_bytes: number | null
+  width: number | null
+  height: number | null
+  created_at: string
+  updated_at: string
+}
+
 export type ActivityVerb =
   | 'joined'
   | 'left'
diff --git a/frontend/vite.config.ts b/frontend/vite.config.ts
index a0a619a..cba6068 100644
--- a/frontend/vite.config.ts
+++ b/frontend/vite.config.ts
@@ -20,6 +20,11 @@ export default defineConfig({
         target: 'http://donut-gestprojet.test',
         changeOrigin: true,
       },
+      // Images uploadées (galerie projet) servies par Apache/Caddy en static.
+      '/uploads': {
+        target: 'http://donut-gestprojet.test',
+        changeOrigin: true,
+      },
     },
   },
 })
diff --git a/migrations/003_add_project_images.sql b/migrations/003_add_project_images.sql
new file mode 100644
index 0000000..7891358
--- /dev/null
+++ b/migrations/003_add_project_images.sql
@@ -0,0 +1,27 @@
+-- Migration 003 — galerie d'images par projet.
+--
+-- Sous Windows + Git Bash, appliquer avec :
+--   mysql --default-character-set=utf8mb4 -uinfolab -p infolab < migrations/003_add_project_images.sql
+-- En prod, c'est apply.sh dans le conteneur (charset utf8mb4 OK par défaut).
+
+SET NAMES utf8mb4;
+
+CREATE TABLE IF NOT EXISTS project_images (
+    id              BIGINT UNSIGNED  NOT NULL AUTO_INCREMENT,
+    project_id      BIGINT UNSIGNED  NOT NULL,
+    url             VARCHAR(1024)    NOT NULL,
+    caption         VARCHAR(255)     NULL,
+    sort_order      INT UNSIGNED     NOT NULL DEFAULT 0,
+    -- Métadonnées remplies par le backend quand l'image est uploadée
+    -- depuis le disque (sinon URL externe → ces colonnes restent NULL).
+    storage_path    VARCHAR(512)     NULL,   -- chemin relatif au docroot Apache, ex: uploads/projects/nos-ecoles/abc123.jpg
+    mime_type       VARCHAR(64)      NULL,
+    size_bytes      INT UNSIGNED     NULL,
+    width           INT UNSIGNED     NULL,
+    height          INT UNSIGNED     NULL,
+    created_at      DATETIME         NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at      DATETIME         NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    PRIMARY KEY (id),
+    KEY idx_image_project (project_id, sort_order),
+    CONSTRAINT fk_image_project FOREIGN KEY (project_id) REFERENCES projects(id) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
diff --git a/public/index.php b/public/index.php
index 607bf9b..e44d8e3 100644
--- a/public/index.php
+++ b/public/index.php
@@ -21,6 +21,7 @@ use Infolab\Controllers\DiscussionsController;
 use Infolab\Controllers\ResourcesController;
 use Infolab\Controllers\ActivityController;
 use Infolab\Controllers\StatsController;
+use Infolab\Controllers\ImagesController;
 
 // CORS systématique, y compris sur la preflight OPTIONS.
 Response::sendCorsHeaders();
@@ -51,6 +52,7 @@ $router->get('/api/projects/:slug/roadmap',        [RoadmapController::class,
 $router->get('/api/projects/:slug/members',        [ProjectMembersController::class, 'index']);
 $router->get('/api/projects/:slug/discussions',    [DiscussionsController::class,    'index']);
 $router->get('/api/projects/:slug/resources',      [ResourcesController::class,      'index']);
+$router->get('/api/projects/:slug/images',         [ImagesController::class,         'index']);
 
 $router->get('/api/activity',                      [ActivityController::class,       'index']);
 $router->get('/api/stats',                         [StatsController::class,          'index']);
@@ -86,6 +88,10 @@ $router->post  ('/api/projects/:slug/resources',              [ResourcesControll
 $router->patch ('/api/projects/:slug/resources/:id',          [ResourcesController::class,      'update']);
 $router->delete('/api/projects/:slug/resources/:id',          [ResourcesController::class,      'destroy']);
 
+$router->post  ('/api/projects/:slug/images',                 [ImagesController::class,         'store']);
+$router->patch ('/api/projects/:slug/images/:id',             [ImagesController::class,         'update']);
+$router->delete('/api/projects/:slug/images/:id',             [ImagesController::class,         'destroy']);
+
 // ----------------------------------------------------------------------------
 // Dispatch + handler global d'exceptions.
 // ----------------------------------------------------------------------------
diff --git a/src/Controllers/ImagesController.php b/src/Controllers/ImagesController.php
new file mode 100644
index 0000000..0380dd7
--- /dev/null
+++ b/src/Controllers/ImagesController.php
@@ -0,0 +1,271 @@
+<?php
+declare(strict_types=1);
+
+namespace Infolab\Controllers;
+
+use Infolab\Database;
+use Infolab\Request;
+use Infolab\Response;
+use Infolab\Validator;
+
+/**
+ * Galerie d'images par projet.
+ *
+ * Deux modes de création :
+ *  - URL externe  (Content-Type: application/json + body {"url":"https://..."})
+ *  - Upload disque (Content-Type: multipart/form-data + file=<binaire>)
+ *
+ * Les uploads vont dans `public/uploads/projects/:slug/<hash>.<ext>`, accessibles
+ * en direct via Apache/Caddy. Le DELETE supprime aussi le fichier sur disque.
+ */
+final class ImagesController
+{
+    private const MAX_BYTES = 5 * 1024 * 1024; // 5 MB
+    private const ALLOWED_MIMES = [
+        'image/jpeg' => 'jpg',
+        'image/png'  => 'png',
+        'image/webp' => 'webp',
+        'image/gif'  => 'gif',
+    ];
+    private const KINDS = ['link', 'document', 'dataset', 'video', 'other'];
+
+    public function index(Request $req, array $params): void
+    {
+        $p = ProjectsController::findOr404($params['slug']);
+        $rows = Database::fetchAll(
+            'SELECT id, project_id, url, caption, sort_order, storage_path, mime_type, size_bytes, width, height, created_at, updated_at
+             FROM project_images WHERE project_id = :pid ORDER BY sort_order ASC, id ASC',
+            [':pid' => (int) $p['id']],
+        );
+        Response::json(['data' => array_map([self::class, 'present'], $rows)]);
+    }
+
+    public function store(Request $req, array $params): void
+    {
+        $p = ProjectsController::findOr404($params['slug']);
+
+        // Branche A : upload disque (multipart/form-data)
+        if ($req->isMultipart() && $req->file('file') !== null) {
+            $this->storeUpload($req, $p);
+            return;
+        }
+
+        // Branche B : URL externe (JSON body)
+        $this->storeUrl($req, $p);
+    }
+
+    public function update(Request $req, array $params): void
+    {
+        $p   = ProjectsController::findOr404($params['slug']);
+        $img = self::findOr404((int) $params['id'], (int) $p['id']);
+
+        $body = $req->json();
+        $v = new Validator($body);
+        $v->string('caption', 255);
+        $v->integer('sort_order', 0);
+        $v->check();
+
+        $update = [];
+        foreach (['caption', 'sort_order'] as $f) {
+            if (array_key_exists($f, $body)) {
+                $update[$f] = $body[$f];
+            }
+        }
+        if (isset($update['sort_order'])) {
+            $update['sort_order'] = (int) $update['sort_order'];
+        }
+        if ($update !== []) {
+            Database::update('project_images', $update, 'id = :id', [':id' => (int) $img['id']]);
+        }
+        $fresh = Database::fetchOne('SELECT * FROM project_images WHERE id = :id', [':id' => (int) $img['id']]);
+        Response::json(self::present($fresh));
+    }
+
+    public function destroy(Request $req, array $params): void
+    {
+        $p   = ProjectsController::findOr404($params['slug']);
+        $img = self::findOr404((int) $params['id'], (int) $p['id']);
+
+        // Supprime la ligne en DB d'abord, puis le fichier disque (best-effort).
+        Database::delete('project_images', 'id = :id', [':id' => (int) $img['id']]);
+        if (!empty($img['storage_path'])) {
+            $absolute = $this->docroot() . '/' . ltrim((string) $img['storage_path'], '/');
+            if (is_file($absolute)) {
+                @unlink($absolute);
+            }
+        }
+        Response::noContent();
+    }
+
+    // -------------------------------------------------------------------------
+    // Helpers privés
+    // -------------------------------------------------------------------------
+
+    /** @param array<string,mixed> $project */
+    private function storeUrl(Request $req, array $project): void
+    {
+        $body = $req->json();
+        $v = new Validator($body);
+        $v->required('url')->url('url', 1024);
+        $v->string('caption', 255);
+        $v->integer('sort_order', 0);
+        $v->check();
+
+        $sortOrder = isset($body['sort_order'])
+            ? (int) $body['sort_order']
+            : self::nextSortOrder((int) $project['id']);
+
+        $id = Database::insert('project_images', [
+            'project_id'  => (int) $project['id'],
+            'url'         => (string) $body['url'],
+            'caption'     => $body['caption'] ?? null,
+            'sort_order'  => $sortOrder,
+        ]);
+        $row = Database::fetchOne('SELECT * FROM project_images WHERE id = :id', [':id' => $id]);
+        Response::json(self::present($row), 201);
+    }
+
+    /** @param array<string,mixed> $project */
+    private function storeUpload(Request $req, array $project): void
+    {
+        $file = $req->file('file');
+        if ($file === null) {
+            throw new \ApiException(400, ['error' => 'bad_request', 'message' => 'no file uploaded']);
+        }
+
+        // 1) Erreur PHP d'upload ?
+        if ($file['error'] !== UPLOAD_ERR_OK) {
+            $msg = match ($file['error']) {
+                UPLOAD_ERR_INI_SIZE, UPLOAD_ERR_FORM_SIZE => 'file too large (PHP upload limit)',
+                UPLOAD_ERR_PARTIAL    => 'upload incomplete',
+                UPLOAD_ERR_NO_TMP_DIR => 'server tmp dir missing',
+                UPLOAD_ERR_CANT_WRITE => 'server cannot write to disk',
+                UPLOAD_ERR_EXTENSION  => 'PHP extension blocked the upload',
+                default               => 'upload failed',
+            };
+            throw new \ApiException(400, ['error' => 'bad_request', 'message' => $msg]);
+        }
+
+        // 2) Taille
+        if ($file['size'] > self::MAX_BYTES) {
+            throw new \ApiException(422, [
+                'error'  => 'validation_failed',
+                'fields' => ['file' => 'too_large'],
+            ]);
+        }
+
+        // 3) MIME type RÉEL (pas l'header fourni par le client, qui est falsifiable)
+        $tmp = $file['tmp_name'];
+        $finfo = new \finfo(FILEINFO_MIME_TYPE);
+        $detected = (string) $finfo->file($tmp);
+        if (!isset(self::ALLOWED_MIMES[$detected])) {
+            throw new \ApiException(422, [
+                'error'  => 'validation_failed',
+                'fields' => ['file' => 'unsupported_mime'],
+                'message' => sprintf('MIME %s non autorisé (autorisés : %s)', $detected, implode(', ', array_keys(self::ALLOWED_MIMES))),
+            ]);
+        }
+        $ext = self::ALLOWED_MIMES[$detected];
+
+        // 4) Dimensions image (peut échouer sur GIF/webp anciens, best-effort)
+        $width = null;
+        $height = null;
+        $info = @getimagesize($tmp);
+        if (is_array($info)) {
+            $width  = (int) $info[0];
+            $height = (int) $info[1];
+        }
+
+        // 5) Construit le chemin cible : public/uploads/projects/:slug/<random>.<ext>
+        $slug = preg_replace('/[^a-z0-9\-]/', '', strtolower((string) $project['slug'])) ?? 'project';
+        $dirRelative = "uploads/projects/$slug";
+        $dirAbsolute = $this->docroot() . '/' . $dirRelative;
+        if (!is_dir($dirAbsolute) && !@mkdir($dirAbsolute, 0755, true) && !is_dir($dirAbsolute)) {
+            error_log("[Images] cannot create $dirAbsolute");
+            throw new \ApiException(500, ['error' => 'internal_server_error']);
+        }
+        $basename = bin2hex(random_bytes(12)) . '.' . $ext;
+        $pathRelative = "$dirRelative/$basename";
+        $pathAbsolute = "$dirAbsolute/$basename";
+
+        // 6) Déplace le fichier upload
+        if (!move_uploaded_file($tmp, $pathAbsolute)) {
+            error_log("[Images] move_uploaded_file failed -> $pathAbsolute");
+            throw new \ApiException(500, ['error' => 'internal_server_error']);
+        }
+        // chmod défensif pour Apache.
+        @chmod($pathAbsolute, 0644);
+
+        // 7) Lit la légende & sort_order optionnels passés en multipart
+        $caption = $req->formField('caption');
+        $sortOrderRaw = $req->formField('sort_order');
+        $sortOrder = $sortOrderRaw !== null && $sortOrderRaw !== ''
+            ? (int) $sortOrderRaw
+            : self::nextSortOrder((int) $project['id']);
+
+        $publicUrl = '/' . $pathRelative;
+
+        $id = Database::insert('project_images', [
+            'project_id'   => (int) $project['id'],
+            'url'          => $publicUrl,
+            'caption'      => $caption,
+            'sort_order'   => $sortOrder,
+            'storage_path' => $pathRelative,
+            'mime_type'    => $detected,
+            'size_bytes'   => (int) $file['size'],
+            'width'        => $width,
+            'height'       => $height,
+        ]);
+        $row = Database::fetchOne('SELECT * FROM project_images WHERE id = :id', [':id' => $id]);
+        Response::json(self::present($row), 201);
+    }
+
+    private static function findOr404(int $id, int $projectId): array
+    {
+        $row = Database::fetchOne(
+            'SELECT * FROM project_images WHERE id = :id AND project_id = :pid',
+            [':id' => $id, ':pid' => $projectId],
+        );
+        if ($row === null) {
+            throw new \ApiException(404, ['error' => 'not_found']);
+        }
+        return $row;
+    }
+
+    private static function nextSortOrder(int $projectId): int
+    {
+        return (int) Database::fetchValue(
+            'SELECT COALESCE(MAX(sort_order), 0) + 10 FROM project_images WHERE project_id = :pid',
+            [':pid' => $projectId],
+        );
+    }
+
+    /**
+     * Racine document du serveur web (Apache DocumentRoot = .../public).
+     * Le contrôleur tourne depuis public/index.php donc __DIR__ . '/../..' = public/
+     * Sauf qu'on est dans src/Controllers/ → racine = src/../../public = public.
+     */
+    private function docroot(): string
+    {
+        return dirname(__DIR__, 2) . '/public';
+    }
+
+    /** @param array<string,mixed> $row */
+    private static function present(array $row): array
+    {
+        return [
+            'id'           => (int) $row['id'],
+            'project_id'   => (int) $row['project_id'],
+            'url'          => $row['url'],
+            'caption'      => $row['caption'],
+            'sort_order'   => (int) $row['sort_order'],
+            'storage_path' => $row['storage_path'],
+            'mime_type'    => $row['mime_type'],
+            'size_bytes'   => $row['size_bytes'] !== null ? (int) $row['size_bytes'] : null,
+            'width'        => $row['width']      !== null ? (int) $row['width']      : null,
+            'height'       => $row['height']     !== null ? (int) $row['height']     : null,
+            'created_at'   => $row['created_at'],
+            'updated_at'   => $row['updated_at'],
+        ];
+    }
+}
diff --git a/src/Request.php b/src/Request.php
index d75dabb..158af0d 100644
--- a/src/Request.php
+++ b/src/Request.php
@@ -128,4 +128,40 @@ final class Request
     {
         return $this->jsonBody[$key] ?? $default;
     }
+
+    // -------------------------------------------------------------------------
+    // multipart/form-data — utilisé par les endpoints d'upload (galerie images).
+    // PHP peuple lui-même $_POST et $_FILES quand le Content-Type est multipart,
+    // on se contente d'exposer ça proprement.
+    // -------------------------------------------------------------------------
+
+    public function isMultipart(): bool
+    {
+        $ct = $this->header('content-type', '') ?? '';
+        return str_contains(strtolower($ct), 'multipart/form-data');
+    }
+
+    /**
+     * Récupère un champ du form (multipart ou x-www-form-urlencoded).
+     */
+    public function formField(string $name, ?string $default = null): ?string
+    {
+        $v = $_POST[$name] ?? null;
+        return $v === null ? $default : (string) $v;
+    }
+
+    /**
+     * Récupère un fichier uploadé. Retourne null si absent ou si erreur d'upload.
+     *
+     * @return array{name:string,type:string,tmp_name:string,error:int,size:int}|null
+     */
+    public function file(string $name): ?array
+    {
+        $f = $_FILES[$name] ?? null;
+        if (!is_array($f) || !isset($f['error']) || $f['error'] === UPLOAD_ERR_NO_FILE) {
+            return null;
+        }
+        return $f;
+    }
 }
+