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>

.gitignore

@@ -6,12 +6,16 @@ log
 *.spec
 temp
 
-# Claude 临时文件
+# AI Agent 临时文件
 .claude/
+.sisyphus/
+
+
 tmpclaude-*
 *.log
 *workspace*
 *.png
 data/
 *.xlsm
-*.xlsx
+*.xlsx
+