Add strategy pattern architecture for BOM module processing

- Add IModuleProcessor interface defining the processor contract
- Implement cProcessor_AppendOnly strategy for modifying existing BOM rows
- Implement cProcessor_CloneNew strategy for creating new BOM rows
- Add mProcessorFactory module for creating processor instances
- Add mSpecAdditionManager module for coordinating spec addition operations
- Enhance test suite with business logic layer and pipeline integration tests

This implements the Strategy pattern to allow flexible BOM modification behaviors while maintaining clean separation of concerns.

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

VBA/Modules/mSpecAdditionManager.bas

@@ -0,0 +1,50 @@
+' ==============================================================================
+' 模块名称: mSpecAdditionManager
+' 模块类别: 标准模块 (Standard Module)
+' 模块职责: 整个架构的主控大脑，负责协调各层组件，完成端到端的数据处理流水线
+' ==============================================================================
+Option Explicit
+
+' ------------------------------------------------------------------------------
+' 过程名称: ExecuteAddition
+' 过程功能: 执行完整的新增规格流水线
+' 参数说明:
+'   ws             - 目标工作表对象
+'   targetItemName - 用户瞄准的物料名称 (如 "径向高压接头")
+'   paramName      - 要修改的参数名 (如 "lcfw")
+'   newValue       - 新增的规格值 (如 "M19")
+'   strategyType   - UI选择的执行策略 (如 "APPEND" 或 "CLONE")
+' ------------------------------------------------------------------------------
+Public Sub ExecuteAddition( _
+    ByVal ws As Worksheet, _
+    ByVal targetItemName As String, _
+    ByVal paramName As String, _
+    ByVal newValue As String, _
+    ByVal strategyType As String)
+
+    Dim engine As cConditionEngine
+    Dim bomCollection As Collection
+    Dim processor As IModuleProcessor
+
+    ' [步骤 1] 初始化核心手术刀引擎
+    Set engine = New cConditionEngine
+
+    ' [步骤 2] 通过数据层将 Excel 读入内存变为对象集合
+    Set bomCollection = mBOMRepository.LoadAllBOMs(ws)
+
+    ' [步骤 3] 从工厂获取用户指定的策略
+    Set processor = mProcessorFactory.GetProcessor(strategyType)
+
+    ' [步骤 4] 将数据集合与目标扔给策略对象执行
+    ' 提示：所有的脏标记 (IsDirty) 会在这一步由对象自己触发记录
+    processor.ProcessSpec bomCollection, targetItemName, paramName, newValue, engine
+
+    ' [步骤 5] 将修改过的数据 (IsDirty=True) 批量写回 Excel
+    mBOMRepository.SaveAll ws, bomCollection
+
+    ' 释放资源 (VBA 虽然有垃圾回收，但良好习惯可以防止 Excel 卡死)
+    Set processor = Nothing
+    Set bomCollection = Nothing
+    Set engine = Nothing
+
+End Sub