perf(import): bypass intermediate Excel file in extraction pipeline

Replace the Extract → Write Excel → Read Excel → Import DB flow with
direct record-to-database persistence. The extractor now builds
MaterialPlanRecord[] from parsed orders and imports them without the
round-trip through a merged Excel file.

Key changes:
- Add importFromRecords() to DataImportService for record-based import
- Add SQL Server OPENJSON batch insert and atomic replace operations
  in DiscreteMaterialPlanDAO for efficient bulk writes
- Extract common import logic into private importRecords() method
- Configure explicit request/connection timeouts for SQL Server
- Add unit tests for direct record import path

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

tests/unit/services/database/discrete-material-plan-dao.test.ts

@@ -0,0 +1,104 @@
+import { describe, it, expect, beforeEach, vi } from 'vitest'
+import {
+  DiscreteMaterialPlanDAO,
+  type MaterialPlanRecord
+} from '../../../../src/main/services/database/discrete-material-plan-dao'
+import type { IDatabaseService } from '../../../../src/main/services/database'
+
+vi.mock('../../../../src/main/services/logger', () => ({
+  createLogger: vi.fn(() => ({
+    info: vi.fn(),
+    debug: vi.fn(),
+    warn: vi.fn(),
+    error: vi.fn()
+  })),
+  getRequestId: vi.fn(() => 'test-request-id'),
+  trackDuration: vi.fn(async (fn) => ({ result: await fn(), durationMs: 1, isSlow: false }))
+}))
+
+vi.mock('../../../../src/main/services/database', () => ({
+  create: vi.fn()
+}))
+
+function createRecord(sourceNumber: string, index: number): MaterialPlanRecord {
+  return {
+    factory: '工厂A',
+    materialStatus: '已审批',
+    planNumber: `PLAN-${index}`,
+    sourceNumber,
+    materialType: '标准',
+    productCode: 'P001',
+    productName: '产品A',
+    productUnit: 'PCS',
+    productPlanQuantity: 1,
+    useDepartment: '',
+    remark: '',
+    creator: '',
+    createDate: new Date('2026-04-28T00:00:00Z'),
+    approver: '',
+    approveDate: new Date('2026-04-28T00:00:00Z'),
+    sequenceNumber: index,
+    materialCode: `MAT-${index}`,
+    materialName: '物料A',
+    specification: '',
+    model: '',
+    drawingNumber: '',
+    materialQuality: '',
+    planQuantity: 1,
+    unit: 'PCS',
+    requiredDate: new Date('2026-04-28T00:00:00Z'),
+    warehouse: '',
+    unitUsage: 1,
+    cumulativeOutputQuantity: 0,
+    bomVersion: ''
+  }
+}
+
+describe('DiscreteMaterialPlanDAO', () => {
+  let mockDbService: IDatabaseService
+
+  beforeEach(async () => {
+    vi.clearAllMocks()
+    mockDbService = {
+      type: 'sqlserver',
+      connect: vi.fn(),
+      disconnect: vi.fn(),
+      isConnected: vi.fn(() => true),
+      query: vi.fn(async (_sql, params = []) => {
+        const rows = JSON.parse(params[1] || '[]')
+        return {
+          rows: [{ deletedCount: 0, insertedCount: rows.length }],
+          columns: ['deletedCount', 'insertedCount'],
+          rowCount: 1
+        }
+      }),
+      transaction: vi.fn()
+    }
+
+    const database = await import('../../../../src/main/services/database')
+    vi.mocked(database.create).mockResolvedValue(mockDbService)
+  })
+
+  it('splits SQL Server replace operations by source number batches', async () => {
+    const records = Array.from({ length: 151 }, (_, index) =>
+      createRecord(`SC-${String(index).padStart(4, '0')}`, index)
+    )
+
+    const dao = new DiscreteMaterialPlanDAO()
+    const result = await dao.replaceBySourceNumbers(records, 1000)
+
+    expect(result).toEqual({ deleted: 0, inserted: 151 })
+    expect(mockDbService.query).toHaveBeenCalledTimes(7)
+
+    const firstParams = vi.mocked(mockDbService.query).mock.calls[0][1] || []
+    const sixthParams = vi.mocked(mockDbService.query).mock.calls[5][1] || []
+    const seventhParams = vi.mocked(mockDbService.query).mock.calls[6][1] || []
+
+    expect(JSON.parse(firstParams[0])).toHaveLength(25)
+    expect(JSON.parse(sixthParams[0])).toHaveLength(25)
+    expect(JSON.parse(seventhParams[0])).toHaveLength(1)
+    expect(JSON.parse(firstParams[1])).toHaveLength(25)
+    expect(JSON.parse(sixthParams[1])).toHaveLength(25)
+    expect(JSON.parse(seventhParams[1])).toHaveLength(1)
+  })
+})

tests/unit/services/erp/extractor.test.ts

@@ -97,6 +97,14 @@ describe('ExtractorService', () => {
         recordsImported: 0,
         uniqueSourceNumbers: 0,
         errors: []
+      } as ImportResult),
+      importFromRecords: vi.fn().mockResolvedValue({
+        success: true,
+        recordsRead: 0,
+        recordsDeleted: 0,
+        recordsImported: 0,
+        uniqueSourceNumbers: 0,
+        errors: []
       } as ImportResult)
     }
 
@@ -173,6 +181,65 @@ describe('ExtractorService', () => {
 
       expect(Array.isArray(result.errors)).toBe(true)
     })
+
+    it('should import parsed records directly instead of re-reading merged Excel', async () => {
+      mockExtractorCoreInstance.downloadAllBatches.mockResolvedValue({
+        downloadedFiles: ['./file1.xlsx'],
+        errors: []
+      })
+      mockExcelParserInstance.parse = vi.fn().mockImplementation(() => {
+        mockExcelParserInstance._lastOrders = [
+          {
+            orderInfo: {
+              factory: '工厂A',
+              planNumber: 'PLAN001',
+              productionOrder: 'ORD001',
+              productCode: 'P001',
+              productName: '产品A',
+              plannedQuantity: '10',
+              unit: 'PCS'
+            },
+            materials: [
+              {
+                sequence: 1,
+                materialCode: 'MAT001',
+                materialName: '物料A',
+                quantity: 2,
+                unit: 'PCS'
+              }
+            ]
+          }
+        ]
+        return Promise.resolve()
+      })
+      mockDataImportInstance.importFromRecords.mockResolvedValue({
+        success: true,
+        recordsRead: 1,
+        recordsDeleted: 0,
+        recordsImported: 1,
+        uniqueSourceNumbers: 1,
+        errors: []
+      } as ImportResult)
+
+      const service = new ExtractorService(mockAuthService, './test-downloads')
+      vi.spyOn(service as any, 'saveMergedOrders').mockResolvedValue(undefined)
+
+      const result = await service.extract({
+        orderNumbers: ['ORD001'],
+        onProgress: vi.fn(),
+        onLog: vi.fn()
+      })
+
+      expect(result.importResult?.success).toBe(true)
+      expect(mockDataImportInstance.importFromRecords).toHaveBeenCalledTimes(1)
+      expect(mockDataImportInstance.importFromExcel).not.toHaveBeenCalled()
+      expect(mockDataImportInstance.importFromRecords.mock.calls[0][0][0]).toMatchObject({
+        planNumber: 'PLAN001',
+        sourceNumber: 'ORD001',
+        materialCode: 'MAT001',
+        planQuantity: 2
+      })
+    })
   })
 
   describe('mergeFiles()', () => {
@@ -196,6 +263,7 @@ describe('ExtractorService', () => {
       ]
 
       const service = new ExtractorService(mockAuthService, './test-downloads')
+      vi.spyOn(service as any, 'saveMergedOrders').mockResolvedValue(undefined)
 
       // @ts-ignore - accessing private method for testing
       const result = await service.mergeFiles(['./file1.xlsx'], ['ORD001'])
@@ -231,6 +299,7 @@ describe('ExtractorService', () => {
       })
 
       const service = new ExtractorService(mockAuthService, './test-downloads')
+      vi.spyOn(service as any, 'saveMergedOrders').mockResolvedValue(undefined)
 
       // @ts-ignore - accessing private method for testing
       const result = await service.mergeFiles(