diff --git a/scripts/seed-industrial-data.ts b/scripts/seed-industrial-data.ts
index a0b12fe..31df185 100644
--- a/scripts/seed-industrial-data.ts
+++ b/scripts/seed-industrial-data.ts
@@ -1,4 +1,6 @@
 import { PrismaClient, Prisma, ModelCategory } from '@prisma/client';
+import { normalizeComponentModelStructure } from '../src/component-models/structure.normalizer';
+import type { ComponentModelStructure } from '../src/shared/types/inventory';
 
 const prisma = new PrismaClient();
 
@@ -32,12 +34,33 @@ type PieceModelDefinition = {
   structure?: Prisma.InputJsonValue;
 };
 
+type ComponentModelStructureDraft =
+  | ComponentModelStructure
+  | ({
+      recommendedCustomFields?: Record<string, unknown>;
+      customFields?: Array<{ key?: string; name?: string; value?: unknown }>;
+      pieceTemplates?: Array<{
+        typeCode?: string;
+        modelCode?: string;
+        quantity?: number;
+        usage?: string;
+        notes?: string;
+        role?: string;
+      }>;
+      subComponentTemplates?: Array<{
+        typeCode?: string;
+        suggestedModelCodes?: string[];
+        alias?: string;
+        notes?: string;
+      }>;
+    } & Record<string, unknown>);
+
 type ComponentModelDefinition = {
   code: string;
   name: string;
   description: string;
   typeCode: string;
-  structure?: Prisma.InputJsonValue;
+  structure?: ComponentModelStructureDraft | Prisma.InputJsonValue;
 };
 
 type ConstructeurDefinition = {
@@ -4207,8 +4230,164 @@ async function createPieceModels(
   return Object.fromEntries(entries) as Record<string, { id: string }>;
 }
 
+function buildComponentModelStructure(
+  structure: ComponentModelStructureDraft | Prisma.InputJsonValue | undefined,
+  componentTypes: Record<string, { id: string }>,
+  pieceTypes: Record<string, { id: string }>,
+): Prisma.InputJsonValue | undefined {
+  if (!structure) {
+    return undefined;
+  }
+
+  if (typeof structure !== 'object' || structure === null) {
+    return structure as Prisma.InputJsonValue;
+  }
+
+  const candidate = structure as Record<string, unknown>;
+
+  const asCleanString = (value: unknown): string | undefined => {
+    if (value === undefined || value === null) {
+      return undefined;
+    }
+    const text = String(value).trim().replace(/\s+/g, ' ');
+    return text ? text : undefined;
+  };
+
+  if (
+    Array.isArray((candidate as any).pieces) ||
+    Array.isArray((candidate as any).customFields) ||
+    Array.isArray((candidate as any).subcomponents) ||
+    Array.isArray((candidate as any).subComponents)
+  ) {
+    return normalizeComponentModelStructure(candidate) as Prisma.InputJsonValue;
+  }
+
+  const customFieldEntries = new Map<string, unknown>();
+
+  const presetCustomFields = Array.isArray((candidate as any).customFields)
+    ? ((candidate as any).customFields as Array<Record<string, unknown>>)
+    : [];
+
+  for (const entry of presetCustomFields) {
+    const key = String(entry?.key ?? entry?.name ?? '').trim();
+    if (!key) {
+      continue;
+    }
+    if (!customFieldEntries.has(key)) {
+      customFieldEntries.set(key, entry?.value ?? null);
+    }
+  }
+
+  const recommended = (candidate as any).recommendedCustomFields as
+    | Record<string, unknown>
+    | undefined;
+
+  if (recommended) {
+    for (const [key, value] of Object.entries(recommended)) {
+      const trimmedKey = String(key).trim();
+      if (!trimmedKey) {
+        continue;
+      }
+      if (!customFieldEntries.has(trimmedKey)) {
+        customFieldEntries.set(trimmedKey, value ?? null);
+      }
+    }
+  }
+
+  const pieces: ComponentModelStructure['pieces'] = [];
+  const subcomponents: ComponentModelStructure['subcomponents'] = [];
+
+  const pieceTemplates = Array.isArray((candidate as any).pieceTemplates)
+    ? ((candidate as any).pieceTemplates as Array<Record<string, unknown>>)
+    : [];
+
+  for (const template of pieceTemplates) {
+    const typeCode = String(template?.typeCode ?? '').trim();
+    if (!typeCode) {
+      continue;
+    }
+
+    const normalizedRole = asCleanString(
+      template?.usage ?? template?.role ?? template?.notes ?? null,
+    );
+
+    if (pieceTypes[typeCode]) {
+      pieces.push(
+        normalizedRole
+          ? { familyCode: typeCode, role: normalizedRole }
+          : { familyCode: typeCode },
+      );
+      continue;
+    }
+
+    if (componentTypes[typeCode]) {
+      subcomponents.push(
+        normalizedRole
+          ? { familyCode: typeCode, alias: normalizedRole }
+          : { familyCode: typeCode },
+      );
+      continue;
+    }
+
+    pieces.push(
+      normalizedRole
+        ? { familyCode: typeCode, role: normalizedRole }
+        : { familyCode: typeCode },
+    );
+  }
+
+  const subComponentTemplates = Array.isArray((candidate as any).subComponentTemplates)
+    ? ((candidate as any).subComponentTemplates as Array<Record<string, unknown>>)
+    : [];
+
+  for (const template of subComponentTemplates) {
+    const typeCode = String(template?.typeCode ?? '').trim();
+    const normalizedAlias = asCleanString(template?.alias ?? template?.notes ?? null);
+    const suggestedModels = Array.isArray(template?.suggestedModelCodes)
+      ? (template?.suggestedModelCodes as string[])
+      : [];
+
+    if (suggestedModels.length > 0) {
+      suggestedModels.forEach((modelCode, index) => {
+        const hint =
+          normalizedAlias && suggestedModels.length > 1
+            ? `${normalizedAlias} #${index + 1}`
+            : normalizedAlias;
+        const fallbackFamily = typeCode || String(modelCode ?? '').trim() || 'UNKNOWN';
+        subcomponents.push(
+          hint
+            ? { familyCode: fallbackFamily, alias: hint }
+            : { familyCode: fallbackFamily },
+        );
+      });
+      continue;
+    }
+
+    if (typeCode) {
+      subcomponents.push(
+        normalizedAlias
+          ? { familyCode: typeCode, alias: normalizedAlias }
+          : { familyCode: typeCode },
+      );
+      continue;
+    }
+  }
+
+  const canonical: ComponentModelStructure = {
+    pieces,
+    subcomponents,
+    customFields: Array.from(customFieldEntries.entries()).map(([key, value]) => ({
+      key,
+      value: value ?? null,
+    })),
+  };
+
+  return normalizeComponentModelStructure(canonical) as Prisma.InputJsonValue;
+}
+
 async function createComponentModels(
   componentTypes: Record<string, { id: string }>,
+  pieceTypes: Record<string, { id: string }>,
 ) {
   console.log('🛠️  Création des modèles de composants...');
 
@@ -4224,7 +4403,11 @@ async function createComponentModels(
           name: definition.name,
           description: definition.description,
           typeComposant: { connect: { id: type.id } },
-          structure: definition.structure,
+          structure: buildComponentModelStructure(
+            definition.structure,
+            componentTypes,
+            pieceTypes,
+          ),
         },
       });
 
@@ -4519,7 +4702,7 @@ async function main() {
     const { componentTypes, pieceTypes } = await createModelTypes();
     const [pieceModels, componentModels, typeMachines] = await Promise.all([
       createPieceModels(pieceTypes),
-      createComponentModels(componentTypes),
+      createComponentModels(componentTypes, pieceTypes),
       createTypeMachines(componentTypes, pieceTypes),
     ]);