feat: add BOM materials retrieval functionality

- Implemented a new API endpoint for retrieving BOM materials based on item codes, enhancing the ability to manage and view component materials.
- Added necessary SQL queries to fetch BOM details, ensuring that the data is filtered by company code for multi-tenancy support.
- Updated frontend components to integrate BOM materials fetching, allowing for better visibility and management of materials in the process workflow.

These changes aim to streamline the management of BOM materials, facilitating better tracking and organization within the application.

backend-node/src/controllers/processInfoController.ts

@@ -420,3 +420,44 @@ export async function saveRoutingDetails(req: AuthenticatedRequest, res: Respons
     return res.status(500).json({ success: false, message: error.message });
   }
 }
+
+// ═══════════════════════════════════════════
+// BOM 구성 자재 조회 (품목코드 기반)
+// ═══════════════════════════════════════════
+
+export async function getBomMaterials(req: AuthenticatedRequest, res: Response) {
+  try {
+    const companyCode = req.user!.companyCode;
+    const { itemCode } = req.params;
+
+    if (!itemCode) {
+      return res.status(400).json({ success: false, message: "itemCode는 필수입니다" });
+    }
+
+    const query = `
+      SELECT
+        bd.id,
+        bd.child_item_id,
+        bd.quantity,
+        bd.unit as detail_unit,
+        bd.process_type,
+        i.item_name as child_item_name,
+        i.item_number as child_item_code,
+        i.type as child_item_type,
+        i.unit as item_unit
+      FROM bom b
+      JOIN bom_detail bd ON b.id = bd.bom_id AND b.company_code = bd.company_code
+      LEFT JOIN item_info i ON bd.child_item_id = i.id AND bd.company_code = i.company_code
+      WHERE b.item_code = $1 AND b.company_code = $2
+      ORDER BY bd.seq_no ASC, bd.created_date ASC
+    `;
+
+    const result = await pool.query(query, [itemCode, companyCode]);
+
+    logger.info("BOM 자재 조회 성공", { companyCode, itemCode, count: result.rowCount });
+    return res.json({ success: true, data: result.rows });
+  } catch (error: any) {
+    logger.error("BOM 자재 조회 실패", { error: error.message });
+    return res.status(500).json({ success: false, message: error.message });
+  }
+}

backend-node/src/routes/processInfoRoutes.ts

@@ -39,4 +39,7 @@ router.delete("/routing-versions/:id", ctrl.deleteRoutingVersion);
 router.get("/routing-details/:versionId", ctrl.getRoutingDetails);
 router.put("/routing-details/:versionId", ctrl.saveRoutingDetails);
 
+// BOM 구성 자재 조회
+router.get("/bom-materials/:itemCode", ctrl.getBomMaterials);
+
 export default router;