chore: clean up whitespace and update gitignore

- Remove trailing whitespace in BIPUploadModule.bas
- Add missing newline at end of BomItem.cls
- Update .gitignore: rename Claude to AI Agent, add .sisyphus/

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

VBA/Modules/BIPUploadModule.bas

@@ -219,7 +219,7 @@ Private Sub ProcessSingleOrder(orderNumber As String, _
         Dim item As BomItem
         Dim lineIndex As Long
         lineIndex = 1
-        
+
         ' 创建字典跟踪每个 BIP 行号基数的当前序号
         Dim bipRowBaseDict As Object
         Set bipRowBaseDict = CreateObject("Scripting.Dictionary")
@@ -233,11 +233,11 @@ Private Sub ProcessSingleOrder(orderNumber As String, _
                 If itemNote <> "" Then itemNote = itemNote & "; "
                 itemNote = itemNote & item.MatchError
             End If
-            
+
             ' 计算实际行号：行号 = BIP 行号基数 + 组内序号 (从 1 开始)
             Dim baseValue As Long
             baseValue = item.BipRowNumberBase
-            
+
             Dim currentIndex As Long
             If bipRowBaseDict.Exists(baseValue) Then
                 currentIndex = bipRowBaseDict(baseValue) + 1
@@ -245,7 +245,7 @@ Private Sub ProcessSingleOrder(orderNumber As String, _
                 currentIndex = 1
             End If
             bipRowBaseDict(baseValue) = currentIndex
-            
+
             Dim actualRowNumber As Long
             actualRowNumber = baseValue + currentIndex