feat: implement inventory comparison worksheet for component materials

Add new "库存比对" worksheet that displays component inventory status
alongside material requirements for production planning.

Changes:
- M04_Config: Add INVENTORY_COMPARISON_SHEET_NAME constant
- M08_ComponentProcessor: Enhance component processing to return both
  component and sub-components when inventory insufficient; add
  GetComponentInventoryInfo() read-only function for inventory lookup
- M09_BOMExtractor: Add WriteInventoryComparisonResults() function
  to generate inventory comparison worksheet with 7 columns showing
  material code, name, required quantity, stock quantity, and status

Output format:
- Columns: 序号, 生产订单号, 物料编码, 物料名称, 所需数量, 库存数量, 库存充足
- Color coding: Green (sufficient) / Red (insufficient)
- Sequence numbering: 10+0, 10+1 per order

Backward compatibility: Existing BOM提取结果 and BIP上传 worksheets
remain unchanged.

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

VBA_BOMConverter/Modules/M04_Config.bas

@@ -28,6 +28,9 @@ Public Const BIP_ROW_NUMBER_BASE As Long = 7000
 Public Const BIP_SUPPLY_MODE As String = "一般发料"
 Public Const BIP_ISSUE_ORG As String = "重庆布莱迪仪器仪表有限公司"
 
+' 库存比对工作表配置
+Public Const INVENTORY_COMPARISON_SHEET_NAME As String = "库存比对"
+
 ' 输入列名称配置
 Public Const INPUT_COL_MODEL As String = "型号"
 Public Const INPUT_COL_PRODUCT_MODEL As String = "产品型号"