feat(admin): création de membre via dashboard

Nouvelle page /admin/members/new, jumeau de l'écran d'édition :
  - Form complet : display_name, slug (auto), initials (auto), kind, bio,
    email, website, avatar URL
  - Avatar preview live (initiales / URL d'avatar mis à jour à la saisie)
  - Slug auto-généré depuis display_name (NFD + lowercase + tirets)
    tant que l'utilisateur n'a pas édité manuellement (flag slugDirty)
  - Initiales auto-suggérées (1re lettre de chaque mot, max 3, upper),
    flag initialsDirty distinct -> tu peux laisser le slug auto mais
    forcer des initiales manuelles ou vice-versa
  - Body construit en omettant les champs vides -> l'API génère ses propres
    initiales si vides, slug auto-uniqueifie sur collision (-2/-3...)
  - 201 -> redirige vers /admin/members/:slug/edit pour voir le résultat
  - 422/409/401 gérés comme les autres écrans admin

UI
  - AdminMembersPage : CTA "Nouveau membre" en haut à droite (à côté de
    la recherche, justify-between sur le wrap parent)
  - Router : route nommée admin-member-new avec guard admin

Backend
  - Aucune nouvelle route : POST /api/members existait déjà
  - Le contrôleur valide display_name (required), kind enum, email format,
    URLs ; auto-génère initiales si non fournies (1res lettres de chaque mot)
  - Slug auto avec suffixe en cas de collision (cf. Slugger::unique)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

frontend/src/pages/admin/AdminMemberNewPage.vue

@@ -0,0 +1,243 @@
+<script setup lang="ts">
+import { ref, watch } from 'vue'
+import { RouterLink, useRouter } from 'vue-router'
+import { api, ApiError } from '@/api/client'
+import { useAuth } from '@/composables/useAuth'
+import type { Member } from '@/types/api'
+import AdminSubNav from '@/components/AdminSubNav.vue'
+import Avatar from '@/components/Avatar.vue'
+
+const router = useRouter()
+const { isAuthenticated } = useAuth()
+
+const form = ref({
+  display_name: '',
+  slug: '',
+  initials: '',
+  kind: 'person' as Member['kind'],
+  bio: '',
+  avatar_url: '',
+  website_url: '',
+  contact_email: '',
+})
+const submitting = ref(false)
+const fieldErrors = ref<Record<string, string>>({})
+const generalError = ref<string | null>(null)
+
+// Slug + initiales auto-suggérés depuis display_name tant que l'utilisateur
+// n'a pas touché manuellement à ces champs. Dès qu'il édite l'un, on coupe
+// l'auto sur ce champ-là seulement.
+const slugDirty = ref(false)
+const initialsDirty = ref(false)
+
+function slugify(s: string): string {
+  return s
+    .normalize('NFD').replace(/[̀-ͯ]/g, '')   // strip diacritics
+    .toLowerCase()
+    .replace(/[^a-z0-9]+/g, '-')
+    .replace(/^-+|-+$/g, '')
+    .slice(0, 96)
+}
+function autoInitials(name: string): string {
+  return name
+    .split(/\s+/)
+    .filter(Boolean)
+    .slice(0, 3)
+    .map(w => w[0]?.toUpperCase() ?? '')
+    .join('')
+    .slice(0, 8)
+}
+
+watch(() => form.value.display_name, (n) => {
+  if (!slugDirty.value)     form.value.slug = slugify(n)
+  if (!initialsDirty.value) form.value.initials = autoInitials(n)
+})
+
+async function submit() {
+  fieldErrors.value = {}
+  generalError.value = null
+  if (!isAuthenticated.value) {
+    generalError.value = "Tu dois être connecté en admin."
+    return
+  }
+  if (!form.value.display_name.trim()) {
+    fieldErrors.value.display_name = 'required'
+    return
+  }
+
+  submitting.value = true
+  try {
+    const body: Record<string, unknown> = {
+      display_name: form.value.display_name.trim(),
+      kind:         form.value.kind,
+    }
+    if (form.value.slug.trim())          body.slug = form.value.slug.trim()
+    if (form.value.initials.trim())      body.initials = form.value.initials.trim()
+    if (form.value.bio.trim())           body.bio = form.value.bio.trim()
+    if (form.value.avatar_url.trim())    body.avatar_url = form.value.avatar_url.trim()
+    if (form.value.website_url.trim())   body.website_url = form.value.website_url.trim()
+    if (form.value.contact_email.trim()) body.contact_email = form.value.contact_email.trim()
+
+    const created = await api.post<Member>('/api/members', body)
+    // Redirige vers l'écran d'édition de la fiche fraîche pour que l'admin voie
+    // tout de suite l'avatar/initiales et puisse compléter.
+    router.push({ name: 'admin-member-edit', params: { slug: created.slug } })
+  } 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 if (e.status === 409)    generalError.value = e.payload.message ?? 'Conflit (slug déjà pris ?)'
+      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">Création d'un nouveau membre dans l'annuaire.</p>
+    </header>
+    <AdminSubNav />
+
+    <div class="mt-6 space-y-4">
+      <RouterLink :to="{ name: 'admin-members' }" 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 l'annuaire
+      </RouterLink>
+
+      <form @submit.prevent="submit" class="rounded-xl border border-donut-border bg-donut-surface p-6 space-y-5">
+        <!-- Preview avatar live -->
+        <header class="flex items-center gap-3 pb-4 border-b border-donut-border">
+          <Avatar
+            :name="form.display_name || 'Nouveau membre'"
+            :initials="form.initials || null"
+            :avatar-url="form.avatar_url || null"
+            :size="44"
+          />
+          <div class="min-w-0">
+            <h2 class="text-base font-semibold text-donut-text truncate">
+              {{ form.display_name || 'Nouveau membre' }}
+            </h2>
+            <p class="text-sm text-donut-muted">
+              {{ form.kind === 'person' ? 'Personne' : form.kind === 'collective' ? 'Collectif' : 'Organisation' }}
+            </p>
+          </div>
+        </header>
+
+        <div>
+          <label class="block text-sm font-medium text-donut-text mb-1">Nom affiché *</label>
+          <input
+            v-model="form.display_name" type="text" maxlength="128" autofocus
+            placeholder="Ex: Camille Dupont / Collectif des écoles / ATD Quart Monde"
+            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.display_name ? 'border-red-400' : ''"
+          />
+          <p v-if="fieldErrors.display_name" class="text-xs text-red-600 mt-1">Nom requis.</p>
+        </div>
+
+        <div class="grid grid-cols-1 sm:grid-cols-[1fr,140px,160px] gap-4">
+          <div>
+            <label class="block text-sm font-medium text-donut-text mb-1">Slug</label>
+            <input
+              v-model="form.slug" type="text" maxlength="96"
+              placeholder="auto-généré depuis le nom"
+              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' : ''"
+              @input="slugDirty = true"
+            />
+            <p class="text-xs text-donut-muted mt-1">Identifiant URL (auto si vide).</p>
+          </div>
+          <div>
+            <label class="block text-sm font-medium text-donut-text mb-1">Initiales</label>
+            <input
+              v-model="form.initials" type="text" maxlength="8"
+              placeholder="Auto"
+              class="w-full bg-white border border-donut-border rounded-lg px-3 py-2.5 text-sm uppercase outline-none focus:border-donut-text"
+              @input="initialsDirty = true"
+            />
+          </div>
+          <div>
+            <label class="block text-sm font-medium text-donut-text mb-1">Type</label>
+            <select
+              v-model="form.kind"
+              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="person">Personne</option>
+              <option value="collective">Collectif</option>
+              <option value="org">Organisation</option>
+            </select>
+          </div>
+        </div>
+
+        <div>
+          <label class="block text-sm font-medium text-donut-text mb-1">Bio</label>
+          <textarea
+            v-model="form.bio" rows="3" maxlength="5000"
+            placeholder="Une courte présentation du membre (optionnel)."
+            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">Email</label>
+            <input
+              v-model="form.contact_email" type="email" maxlength="255"
+              placeholder="contact@example.org"
+              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.contact_email ? 'border-red-400' : ''"
+            />
+            <p v-if="fieldErrors.contact_email" class="text-xs text-red-600 mt-1">Email invalide.</p>
+          </div>
+          <div>
+            <label class="block text-sm font-medium text-donut-text mb-1">Site web</label>
+            <input
+              v-model="form.website_url" type="url" maxlength="512"
+              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"
+              :class="fieldErrors.website_url ? 'border-red-400' : ''"
+            />
+            <p v-if="fieldErrors.website_url" class="text-xs text-red-600 mt-1">URL invalide.</p>
+          </div>
+        </div>
+
+        <div>
+          <label class="block text-sm font-medium text-donut-text mb-1">Avatar (URL)</label>
+          <input
+            v-model="form.avatar_url" type="url" maxlength="512"
+            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"
+            :class="fieldErrors.avatar_url ? 'border-red-400' : ''"
+          />
+          <p class="text-xs text-donut-muted mt-1">Image externe. Si vide, on génère l'avatar depuis les initiales.</p>
+        </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-members' }"
+            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 ? 'Création…' : 'Créer le membre' }}
+          </button>
+        </div>
+      </form>
+    </div>
+  </section>
+</template>

frontend/src/pages/admin/AdminMembersPage.vue

@@ -62,13 +62,22 @@ const KIND_LABEL = {
     </header>
     <AdminSubNav />
 
-    <div class="mt-6 flex items-center gap-2">
+    <div class="mt-6 flex items-center justify-between gap-2 flex-wrap">
       <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"
       />
+      <RouterLink
+        :to="{ name: 'admin-member-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 membre
+      </RouterLink>
     </div>
 
     <LoadingState v-if="loading" class="mt-8" />

frontend/src/router/index.ts

@@ -38,6 +38,7 @@ const routes: RouteRecordRaw[] = [
       { 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/members/new', name: 'admin-member-new', component: () => import('@/pages/admin/AdminMemberNewPage.vue'), beforeEnter: requireAdmin },
       { path: 'admin/members/:slug/edit', name: 'admin-member-edit', component: () => import('@/pages/admin/AdminMemberEditPage.vue'), props: true, beforeEnter: requireAdmin },
       { path: 'admin/categories', name: 'admin-categories', component: () => import('@/pages/admin/AdminCategoriesPage.vue'), beforeEnter: requireAdmin },
       { path: 'admin/categories/new', name: 'admin-category-new', component: () => import('@/pages/admin/AdminCategoryNewPage.vue'), beforeEnter: requireAdmin },