refactor: replace CODE field source from column C to column I (66代码)

- Add COL_IDX_CODE66 constant for column I in M04_Config.bas
- Extend data reading range to include column I in M02_DataIO.ReadSourceData
- Use .Text property for column I to preserve leading zeros
- Update baseInfo array to use column I instead of column C in M01_Main.bas
- Set output code column to text format to prevent numeric conversion

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

VBA_BOMConverter/Modules/M01_Main.bas

@@ -95,8 +95,8 @@ Public Sub RunBOMConversion()
                     catData.Add strCat, New Collection
                 End If
 
-                ' 基础信息: 代号, 名称, 数量
-                baseInfo = Array(arrData(i, M04_Config.COL_IDX_CODE), _
+                ' 基础信息: 66代码, 名称, 数量（使用I列的66代码作为编码）
+                baseInfo = Array(arrData(i, M04_Config.COL_IDX_CODE66), _
                                  arrData(i, M04_Config.COL_IDX_NAME), _
                                  arrData(i, M04_Config.COL_IDX_QTY))
 

VBA_BOMConverter/Modules/M02_DataIO.bas

@@ -6,7 +6,12 @@ Option Explicit
 
 Public Function ReadSourceData(ws As Worksheet) As Variant
     Dim lastRow As Long
-    ' 查找C列最后一行
+    Dim i As Long, r As Long
+    Dim arrRaw As Variant
+    Dim arrResult() As Variant
+    Dim cell As Range
+
+    ' 查找C列最后一行（保持原有逻辑，使用代号列判断）
     lastRow = ws.Cells(ws.Rows.count, M04_Config.COL_IDX_CODE).End(xlUp).row
 
     If lastRow < M04_Config.SRC_START_ROW Then
@@ -14,8 +19,28 @@ Public Function ReadSourceData(ws As Worksheet) As Variant
         Exit Function
     End If
 
-    ' 读取整张表的数据区域 (假设列数不超过20列，足以覆盖到类别列)
-    ReadSourceData = ws.Range(ws.Cells(M04_Config.SRC_START_ROW, 1), ws.Cells(lastRow, M04_Config.COL_IDX_CAT)).Value
+    ' 第一步：使用数组方式读取整个数据区域（高性能）
+    arrRaw = ws.Range(ws.Cells(M04_Config.SRC_START_ROW, 1), ws.Cells(lastRow, M04_Config.COL_IDX_CODE66)).Value
+
+    ' 第二步：对66代码列（第9列）使用.Text属性重新读取，以保留前导0
+    ' 因为.Value会将"00123"转换为123，而.Text会保留显示的"00123"
+    ReDim arrResult(1 To UBound(arrRaw, 1), 1 To UBound(arrRaw, 2))
+
+    ' 复制原始数据
+    For r = 1 To UBound(arrRaw, 1)
+        For i = 1 To UBound(arrRaw, 2)
+            If i = M04_Config.COL_IDX_CODE66 Then
+                ' 对于66代码列（I列），使用.Text属性读取显示文本
+                Set cell = ws.Cells(M04_Config.SRC_START_ROW + r - 1, M04_Config.COL_IDX_CODE66)
+                arrResult(r, i) = cell.Text
+            Else
+                ' 其他列使用原始值
+                arrResult(r, i) = arrRaw(r, i)
+            End If
+        Next i
+    Next r
+
+    ReadSourceData = arrResult
 End Function
 
 Public Sub WriteCategoryToNewBook(catData As Object)
@@ -105,9 +130,14 @@ Public Sub WriteCategoryToNewBook(catData As Object)
                 finalArr(r + 1, colOffset + 3) = baseInfo(2) ' Qty
             Next r
 
-            ' 4. 写入Excel
+
+            ' 4 设置编码列为文本格式（防止数字编码被转换为科学计数法或丢失前导零）
+            ws.Columns(colOffset + 2).NumberFormat = "@"
+
+            ' 4.1 写入Excel
             ws.Range("A1").Resize(UBound(finalArr, 1), UBound(finalArr, 2)).Value = finalArr
             ws.Range("A1").Resize(1, totalCols).Font.Bold = True
+
             ws.Columns.AutoFit
         End If
     Next catName

VBA_BOMConverter/Modules/M04_Config.bas

@@ -10,6 +10,7 @@ Public Const COL_IDX_NAME As Long = 4      ' 名称 (D列)
 Public Const COL_IDX_QTY As Long = 5       ' 数量 (E列)
 Public Const COL_IDX_COND As Long = 6      ' 选择条件 (F列)
 Public Const COL_IDX_CAT As Long = 8       ' 类别 (H列)
+Public Const COL_IDX_CODE66 As Long = 9    ' 66代码 (I列) - NEW
 Public Const SRC_START_ROW As Long = 4     ' 数据起始行
 
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