feat: Composants d'affichage des machines et composants

- ComponentHierarchy.vue : Affichage hiérarchique des composants
- ComponentItem.vue : Affichage d'un composant individuel
- CustomFieldsDisplay.vue : Affichage des champs personnalisés
- PieceItem.vue : Affichage des pièces de machines
- Support de l'affichage en lecture seule et édition
- Gestion des relations parent-enfant entre composants

app/components/CustomFieldsDisplay.vue

@@ -0,0 +1,135 @@
+<template>
+  <div v-if="customFields && customFields.length > 0" class="space-y-4">
+    <h4 class="font-semibold text-gray-700 mb-3">Champs personnalisés</h4>
+    <div class="grid grid-cols-1 md:grid-cols-2 gap-4">
+      <div 
+        v-for="field in customFields" 
+        :key="field.id"
+        class="form-control"
+      >
+        <label class="label">
+          <span class="label-text">{{ field.name }}</span>
+          <span v-if="field.required" class="label-text-alt text-error">*</span>
+        </label>
+        
+        <!-- Champ de type TEXT -->
+        <input 
+          v-if="field.type === 'text'"
+          v-model="fieldValues[field.id]"
+          type="text"
+          :placeholder="field.defaultValue || ''"
+          class="input input-bordered input-sm"
+          :required="field.required"
+          @blur="updateCustomFieldValue(field.id)"
+        />
+        
+        <!-- Champ de type NUMBER -->
+        <input 
+          v-else-if="field.type === 'number'"
+          v-model="fieldValues[field.id]"
+          type="number"
+          :placeholder="field.defaultValue || ''"
+          class="input input-bordered input-sm"
+          :required="field.required"
+          @blur="updateCustomFieldValue(field.id)"
+        />
+        
+        <!-- Champ de type SELECT -->
+        <select 
+          v-else-if="field.type === 'select'"
+          v-model="fieldValues[field.id]"
+          class="select select-bordered select-sm"
+          :required="field.required"
+          @change="updateCustomFieldValue(field.id)"
+        >
+          <option value="">{{ field.defaultValue || 'Sélectionner...' }}</option>
+          <option 
+            v-for="option in field.options" 
+            :key="option" 
+            :value="option"
+          >
+            {{ option }}
+          </option>
+        </select>
+        
+        <!-- Champ de type BOOLEAN -->
+        <div v-else-if="field.type === 'boolean'" class="flex items-center gap-2">
+          <input 
+            v-model="fieldValues[field.id]"
+            type="checkbox"
+            class="checkbox checkbox-sm"
+            :checked="fieldValues[field.id] === 'true'"
+            @change="updateCustomFieldValue(field.id)"
+          />
+          <span class="text-sm">{{ fieldValues[field.id] === 'true' ? 'Oui' : 'Non' }}</span>
+        </div>
+        
+        <!-- Champ de type DATE -->
+        <input 
+          v-else-if="field.type === 'date'"
+          v-model="fieldValues[field.id]"
+          type="date"
+          :placeholder="field.defaultValue || ''"
+          class="input input-bordered input-sm"
+          :required="field.required"
+          @blur="updateCustomFieldValue(field.id)"
+        />
+      </div>
+    </div>
+  </div>
+</template>
+
+<script setup>
+import { ref, reactive, onMounted, watch } from 'vue'
+
+const props = defineProps({
+  customFields: {
+    type: Array,
+    default: () => []
+  },
+  entityId: {
+    type: String,
+    required: true
+  },
+  entityType: {
+    type: String,
+    required: true, // 'machine', 'composant', 'piece'
+    validator: (value) => ['machine', 'composant', 'piece'].includes(value)
+  }
+})
+
+const emit = defineEmits(['update'])
+
+// Valeurs des champs personnalisés
+const fieldValues = reactive({})
+
+// Initialiser les valeurs avec les valeurs par défaut
+const initializeFieldValues = () => {
+  props.customFields.forEach(field => {
+    if (!fieldValues[field.id]) {
+      fieldValues[field.id] = field.defaultValue || ''
+    }
+  })
+}
+
+// Mettre à jour la valeur d'un champ personnalisé
+const updateCustomFieldValue = (fieldId) => {
+  const field = props.customFields.find(f => f.id === fieldId)
+  if (field) {
+    emit('update', {
+      fieldId,
+      value: fieldValues[fieldId],
+      field
+    })
+  }
+}
+
+// Surveiller les changements dans les champs personnalisés
+watch(() => props.customFields, () => {
+  initializeFieldValues()
+}, { deep: true })
+
+onMounted(() => {
+  initializeFieldValues()
+})
+</script>