feat(machine) : allow site editing on machine detail page and align card buttons

- Add site select field in MachineInfoCard (edit mode)
- Include siteId in machine PATCH payload
- Align action buttons (Modifier/Supprimer/Détails) consistently at card bottom
- Use mt-auto + flex-col to push buttons to bottom across all machine cards

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

app/components/machine/MachineInfoCard.vue

@@ -20,6 +20,29 @@
             {{ machineName }}
           </div>
         </div>
+        <div class="form-control">
+          <label class="label">
+            <span class="label-text">Site</span>
+          </label>
+          <select
+            v-if="isEditMode"
+            :value="machineSiteId"
+            class="select select-bordered"
+            @change="$emit('update:machine-site-id', ($event.target as HTMLSelectElement).value); $emit('blur-field')"
+          >
+            <option value="">Sélectionner un site</option>
+            <option
+              v-for="site in sites"
+              :key="site.id"
+              :value="site.id"
+            >
+              {{ site.name }}
+            </option>
+          </select>
+          <div v-else class="input input-bordered bg-base-200">
+            {{ machineSiteName || 'Non défini' }}
+          </div>
+        </div>
         <div v-if="isEditMode || machineReference" class="form-control">
           <label class="label">
             <span class="label-text">Référence</span>
@@ -184,6 +207,9 @@ const props = defineProps<{
   isEditMode: boolean
   machineName: string
   machineReference: string
+  machineSiteId: string
+  machineSiteName: string
+  sites: any[]
   machineConstructeurIds: string[]
   machineConstructeursDisplay: any[]
   hasMachineConstructeur: boolean
@@ -196,6 +222,7 @@ const props = defineProps<{
 const emit = defineEmits<{
   'update:machine-name': [value: string]
   'update:machine-reference': [value: string]
+  'update:machine-site-id': [value: string]
   'update:constructeur-ids': [ids: unknown]
   'blur-field': []
   'set-custom-field-value': [field: any, value: unknown]