feat(plantes): popup variété + bouton ➕ Variété + temp_germination/temps_levee_j

- Ajoute detailPlantObj (ref<Plant>) synchronisé dans openDetails/prevVariety/nextVariety/closeDetail
- Renomme detailVarieties (ref<Plant[]>) en detailPlantGroup pour la navigation par groupe de nom_commun
- Ajoute detailVarieties comme computed<PlantVariety[]> depuis detailPlantObj.value.varieties
- Ajoute refs/fonctions formulaire variété : showFormVariety, editVariety, formVariety, openAddVariety, openEditVariety, closeFormVariety, submitVariety, deleteVariety
- Bouton ➕ Variété dans le footer du popup détail
- Liste des PlantVariety dans le popup détail (avec édition/suppression et alerte DLUO)
- Champs temp_germination et temps_levee_j dans la section caractéristiques
- Popup formulaire variété (z-[70]) avec tous les champs

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/views/PlantesView.vue

@@ -85,7 +85,7 @@
 
               <!-- Navigation variétés -->
               <div class="flex items-center gap-3 mt-3">
-                <div v-if="detailVarieties.length > 1" class="flex items-center gap-2">
+                <div v-if="detailPlantGroup.length > 1" class="flex items-center gap-2">
                   <button @click="prevVariety"
                     :disabled="detailVarietyIdx === 0"
                     :class="['w-7 h-7 rounded-full border flex items-center justify-center text-sm font-bold transition-all',
@@ -93,12 +93,12 @@
                     ‹
                   </button>
                   <span class="text-text-muted text-xs font-bold">
-                    Variété {{ detailVarietyIdx + 1 }} / {{ detailVarieties.length }}
+                    Variété {{ detailVarietyIdx + 1 }} / {{ detailPlantGroup.length }}
                   </span>
                   <button @click="nextVariety"
-                    :disabled="detailVarietyIdx === detailVarieties.length - 1"
+                    :disabled="detailVarietyIdx === detailPlantGroup.length - 1"
                     :class="['w-7 h-7 rounded-full border flex items-center justify-center text-sm font-bold transition-all',
-                      detailVarietyIdx === detailVarieties.length - 1 ? 'border-bg-soft text-text-muted/30 cursor-not-allowed' : 'border-yellow/50 text-yellow hover:bg-yellow/10']">
+                      detailVarietyIdx === detailPlantGroup.length - 1 ? 'border-bg-soft text-text-muted/30 cursor-not-allowed' : 'border-yellow/50 text-yellow hover:bg-yellow/10']">
                     ›
                   </button>
                 </div>
@@ -134,6 +134,14 @@
                 <span class="font-bold">Mois: {{ detailPlant.plantation_mois }}</span>
               </div>
             </div>
+            <div v-if="detailPlantObj?.temp_germination" class="bg-bg/30 p-3 rounded-xl border border-bg-soft">
+              <span class="text-[9px] font-black text-text-muted uppercase block mb-0.5">T° germination</span>
+              <span class="text-text text-sm">{{ detailPlantObj.temp_germination }}</span>
+            </div>
+            <div v-if="detailPlantObj?.temps_levee_j" class="bg-bg/30 p-3 rounded-xl border border-bg-soft">
+              <span class="text-[9px] font-black text-text-muted uppercase block mb-0.5">Temps de levée</span>
+              <span class="text-text text-sm">{{ detailPlantObj.temps_levee_j }}</span>
+            </div>
           </div>
 
           <!-- Boutique -->
@@ -203,6 +211,28 @@
             </div>
           </div>
 
+          <!-- Variétés (PlantVariety) -->
+          <div v-if="detailVarieties.length" class="space-y-2 mt-4">
+            <h3 class="text-[9px] font-black text-text-muted uppercase tracking-widest">
+              🌿 Variétés ({{ detailVarieties.length }})
+            </h3>
+            <div class="space-y-1">
+              <div v-for="v in detailVarieties" :key="v.id"
+                class="flex items-center justify-between bg-bg/30 px-3 py-2 rounded-lg border border-bg-soft">
+                <div>
+                  <span class="text-text text-sm font-bold">{{ v.variete || '(sans nom)' }}</span>
+                  <span v-if="v.boutique_nom" class="text-text-muted text-xs ml-2">🛒 {{ v.boutique_nom }}</span>
+                  <span v-if="v.prix_achat" class="text-yellow text-xs ml-2">{{ v.prix_achat.toFixed(2) }}€</span>
+                  <span v-if="v.dluo && isDluoExpired(v.dluo)" class="text-red text-xs ml-1">⚠️ DLUO</span>
+                </div>
+                <div class="flex gap-1">
+                  <button @click="openEditVariety(v)" class="text-text-muted hover:text-yellow text-xs px-2">✏️</button>
+                  <button @click="deleteVariety(v.id!)" class="text-text-muted hover:text-red text-xs px-2">✕</button>
+                </div>
+              </div>
+            </div>
+          </div>
+
           <!-- Galerie Photos -->
           <div class="space-y-3">
             <div class="flex justify-between items-center">
@@ -228,6 +258,10 @@
 
         <!-- Footer -->
         <div class="p-4 bg-bg-hard border-t border-bg-soft flex gap-3">
+          <button @click="openAddVariety"
+            class="btn-primary !bg-green !text-bg py-2 px-4 font-black uppercase text-xs flex items-center gap-1">
+            ➕ Variété
+          </button>
           <button @click="startEdit(detailPlant)" class="btn-primary !bg-yellow !text-bg flex-1 py-3 font-black uppercase text-xs tracking-widest">Modifier la fiche</button>
           <button @click="removePlant(detailPlant.id!)" class="btn-outline !border-red/20 !text-red hover:bg-red/10 px-6 py-3 font-black uppercase text-xs tracking-widest">Supprimer</button>
         </div>
@@ -462,6 +496,81 @@
 
     <!-- Upload Photo -->
     <input type="file" ref="fileInput" accept="image/*" class="hidden" @change="handleFileUpload" />
+
+    <!-- ====== POPUP FORMULAIRE VARIÉTÉ ====== -->
+    <div v-if="showFormVariety" class="fixed inset-0 bg-black/80 backdrop-blur-sm z-[70] flex items-center justify-center p-4" @click.self="closeFormVariety">
+      <div class="bg-bg-hard rounded-3xl p-6 w-full max-w-xl border border-bg-soft shadow-2xl max-h-[90vh] overflow-y-auto">
+        <div class="flex items-center justify-between mb-5 border-b border-bg-soft pb-4">
+          <h2 class="text-text font-black text-xl uppercase">
+            {{ editVariety ? 'Modifier la variété' : '➕ Nouvelle variété' }}
+          </h2>
+          <button @click="closeFormVariety" class="text-text-muted hover:text-red text-2xl">✕</button>
+        </div>
+        <p class="text-text-muted text-xs mb-4 italic">
+          Plante : <span class="text-yellow font-bold">{{ detailPlantObj?.nom_commun }}</span>
+        </p>
+        <form @submit.prevent="submitVariety" class="grid grid-cols-1 md:grid-cols-2 gap-4">
+          <div class="md:col-span-2">
+            <label class="text-text-muted text-[10px] font-black uppercase tracking-widest block mb-1">Nom de la variété *</label>
+            <input v-model="formVariety.variete" required
+              class="w-full bg-bg border border-bg-soft rounded-xl px-4 py-3 text-text text-sm focus:border-yellow outline-none"
+              placeholder="Ex: Nantaise, Cornue des Andes, Moneymaker…" />
+          </div>
+          <div class="md:col-span-2">
+            <label class="text-text-muted text-[10px] font-black uppercase tracking-widest block mb-1">Tags</label>
+            <input v-model="formVariety.tags"
+              class="w-full bg-bg border border-bg-soft rounded-xl px-4 py-3 text-text text-sm focus:border-yellow outline-none"
+              placeholder="bio, f1, ancien, résistant…" />
+          </div>
+          <div>
+            <label class="text-text-muted text-[10px] font-black uppercase tracking-widest block mb-1">Enseigne</label>
+            <select v-model="formVariety.boutique_nom"
+              class="w-full bg-bg border border-bg-soft rounded-xl px-4 py-3 text-text text-sm outline-none focus:border-yellow appearance-none">
+              <option value="">— Non renseigné —</option>
+              <option v-for="b in BOUTIQUES" :key="b" :value="b">{{ b }}</option>
+            </select>
+          </div>
+          <div>
+            <label class="text-text-muted text-[10px] font-black uppercase tracking-widest block mb-1">Prix (€)</label>
+            <input v-model.number="formVariety.prix_achat" type="number" step="0.01" min="0"
+              class="w-full bg-bg border border-bg-soft rounded-xl px-4 py-3 text-text text-sm focus:border-yellow outline-none" />
+          </div>
+          <div>
+            <label class="text-text-muted text-[10px] font-black uppercase tracking-widest block mb-1">Poids / Qté sachet</label>
+            <input v-model="formVariety.poids" placeholder="ex: 5g, 100 graines"
+              class="w-full bg-bg border border-bg-soft rounded-xl px-4 py-3 text-text text-sm focus:border-yellow outline-none" />
+          </div>
+          <div>
+            <label class="text-text-muted text-[10px] font-black uppercase tracking-widest block mb-1">Date d'achat</label>
+            <input v-model="formVariety.date_achat" type="date"
+              class="w-full bg-bg border border-bg-soft rounded-xl px-4 py-3 text-text text-sm focus:border-yellow outline-none" />
+          </div>
+          <div>
+            <label class="text-text-muted text-[10px] font-black uppercase tracking-widest block mb-1">DLUO</label>
+            <input v-model="formVariety.dluo" type="date"
+              class="w-full bg-bg border border-bg-soft rounded-xl px-4 py-3 text-text text-sm focus:border-yellow outline-none" />
+          </div>
+          <div class="md:col-span-2">
+            <label class="text-text-muted text-[10px] font-black uppercase tracking-widest block mb-1">URL produit</label>
+            <input v-model="formVariety.boutique_url" type="url" placeholder="https://…"
+              class="w-full bg-bg border border-bg-soft rounded-xl px-4 py-3 text-text text-sm focus:border-yellow outline-none" />
+          </div>
+          <div class="md:col-span-2">
+            <label class="text-text-muted text-[10px] font-black uppercase tracking-widest block mb-1">Notes spécifiques à cette variété</label>
+            <textarea v-model="formVariety.notes_variete" rows="3"
+              class="w-full bg-bg border border-bg-soft rounded-xl px-4 py-3 text-text text-sm focus:border-yellow outline-none resize-none" />
+          </div>
+          <div class="md:col-span-2 flex justify-between pt-4 border-t border-bg-soft">
+            <button type="button" @click="closeFormVariety"
+              class="text-text-muted hover:text-red uppercase text-xs font-bold px-6">Annuler</button>
+            <button type="submit"
+              class="btn-primary px-8 py-3 !bg-green !text-bg font-black">
+              {{ editVariety ? 'Sauvegarder' : 'Ajouter' }}
+            </button>
+          </div>
+        </form>
+      </div>
+    </div>
   </div>
 </template>
 
@@ -469,7 +578,7 @@
 import { computed, onMounted, reactive, ref } from 'vue'
 import axios from 'axios'
 import { usePlantsStore } from '@/stores/plants'
-import type { Plant } from '@/api/plants'
+import type { Plant, PlantVariety } from '@/api/plants'
 import { useToast } from '@/composables/useToast'
 
 const plantsStore = usePlantsStore()
@@ -485,17 +594,35 @@ const lightbox = ref<Media | null>(null)
 const fileInput = ref<HTMLInputElement | null>(null)
 const uploadTarget = ref<Plant | null>(null)
 
-// Navigation variétés
+// Navigation variétés (groupe de Plant par nom_commun)
-const detailVarieties = ref<Plant[]>([])
+const detailPlantGroup = ref<Plant[]>([])
 const detailVarietyIdx = ref(0)
-const detailPlant = computed(() => detailVarieties.value[detailVarietyIdx.value] ?? null)
+const detailPlant = computed(() => detailPlantGroup.value[detailVarietyIdx.value] ?? null)
+
+// detailPlantObj : ref sur la plante ouverte en détail (Plant complet)
+const detailPlantObj = ref<Plant | null>(null)
+
+// detailVarieties : variétés (PlantVariety) de la plante affichée
+const detailVarieties = computed<PlantVariety[]>(() => {
+  if (!detailPlantObj.value) return []
+  return detailPlantObj.value.varieties ?? []
+})
 
 // Associations au niveau nom_commun (première variété ayant des données)
 const detailAssociations = computed(() =>
-  detailVarieties.value.find(v => v.associations_favorables?.length || v.associations_defavorables?.length)
+  detailPlantGroup.value.find(v => v.associations_favorables?.length || v.associations_defavorables?.length)
   ?? detailPlant.value
 )
 
+// Refs pour le formulaire variété
+const showFormVariety = ref(false)
+const editVariety = ref<PlantVariety | null>(null)
+const formVariety = reactive<Partial<PlantVariety>>({
+  variete: '', tags: '', notes_variete: '',
+  boutique_nom: '', boutique_url: '', prix_achat: undefined,
+  date_achat: '', poids: '', dluo: '',
+})
+
 interface Media {
   id: number; entity_type: string; entity_id: number
   url: string; thumbnail_url?: string; titre?: string
@@ -637,7 +764,8 @@ function catTextClass(cat: string) {
 }
 
 function closeDetail() {
-  detailVarieties.value = []
+  detailPlantGroup.value = []
+  detailPlantObj.value = null
   detailVarietyIdx.value = 0
   plantPhotos.value = []
 }
@@ -645,21 +773,24 @@ function closeDetail() {
 async function openDetails(p: Plant) {
   const key = (p.nom_commun || '').toLowerCase()
   const group = plantGroups.value.get(key) || [p]
-  detailVarieties.value = [...group].sort((a, b) => (a.id || 0) - (b.id || 0))
+  detailPlantGroup.value = [...group].sort((a, b) => (a.id || 0) - (b.id || 0))
   detailVarietyIdx.value = 0
-  await fetchPhotos(detailVarieties.value[0].id!)
+  detailPlantObj.value = detailPlantGroup.value[0]
+  await fetchPhotos(detailPlantGroup.value[0].id!)
 }
 
 async function prevVariety() {
   if (detailVarietyIdx.value > 0) {
     detailVarietyIdx.value--
+    detailPlantObj.value = detailPlant.value
     await fetchPhotos(detailPlant.value!.id!)
   }
 }
 
 async function nextVariety() {
-  if (detailVarietyIdx.value < detailVarieties.value.length - 1) {
+  if (detailVarietyIdx.value < detailPlantGroup.value.length - 1) {
     detailVarietyIdx.value++
+    detailPlantObj.value = detailPlant.value
     await fetchPhotos(detailPlant.value!.id!)
   }
 }
@@ -712,6 +843,52 @@ function closeForm() {
   })
 }
 
+function openAddVariety() {
+  if (!detailPlantObj.value) return
+  editVariety.value = null
+  Object.assign(formVariety, {
+    variete: '', tags: '', notes_variete: '',
+    boutique_nom: '', boutique_url: '', prix_achat: undefined,
+    date_achat: '', poids: '', dluo: '',
+  })
+  showFormVariety.value = true
+}
+
+function openEditVariety(v: PlantVariety) {
+  editVariety.value = v
+  Object.assign(formVariety, { ...v })
+  showFormVariety.value = true
+}
+
+function closeFormVariety() {
+  showFormVariety.value = false
+  editVariety.value = null
+}
+
+async function submitVariety() {
+  if (!detailPlantObj.value?.id) return
+  const payload = { ...formVariety, prix_achat: formVariety.prix_achat ?? undefined }
+  if (editVariety.value?.id) {
+    await plantsStore.updateVariety(detailPlantObj.value.id, editVariety.value.id, payload)
+    toast.success('Variété modifiée')
+  } else {
+    await plantsStore.createVariety(detailPlantObj.value.id, payload)
+    toast.success('Variété ajoutée')
+  }
+  // Refresh plant data so detailPlantObj reflects updated varieties
+  await plantsStore.fetchAll()
+  const updatedPlant = plantsStore.plants.find(p => p.id === detailPlantObj.value?.id)
+  if (updatedPlant) detailPlantObj.value = updatedPlant
+  closeFormVariety()
+}
+
+async function deleteVariety(vid: number) {
+  if (!detailPlantObj.value?.id) return
+  if (!confirm('Supprimer cette variété ?')) return
+  await plantsStore.removeVariety(detailPlantObj.value.id, vid)
+  toast.success('Variété supprimée')
+}
+
 async function submitPlant() {
   if (submitting.value) return
   submitting.value = true