refactor: 水池截面中转文件改用 CoreTools::getTempFilePath

删除 Pool3dCmd/PoolSectionTemp.h，JMDBDlg、JMSJDlg、HZQTDlg 共 7 处
改为 CoreTools::getTempFilePath(_T("JMSJ_"), _T(".sat"), 目录)。

同时修 getTempFilePath 自身的问题：
- 传了有效父目录时 sParentPath 没有赋值，会拼出 "\JMSJ_xxx.sat"
- 父目录为空时仍对 pszParentPath 调 _taccess，参数可能是 NULL
- return sPath(); 语法错误
- objId 用 %lu 格式化 Adesk::ULongPtr，64 位下会截断，改 %I64u

temp-file-naming.md 同步改为介绍这个通用函数。

SourceCode/Code2026/Pool3dCmd/JMSJDlg.cpp

@@ -1,7 +1,6 @@
 #include "stdafx.h"
 #include "JMSJDlg.h"
 #include "CoreTools.h"
-#include "PoolSectionTemp.h"
 #include "JUXCDlg.h"
 #include "GLTKDlg.h"
 #include "BYCDlg.h"
@@ -79,7 +78,7 @@ BOOL CJMSJDlg::OnInitDialog()
 void CJMSJDlg::ShowLastSection()
 {
 	//1.截面
-	CString sFullPath = GetPoolSectionSatPath(FilePath::getSystemTemporaryFolder());
+	CString sFullPath = CoreTools::getTempFilePath(_T("JMSJ_"), _T(".sat"), FilePath::getSystemTemporaryFolder());
 
 	AcDbVoidPtrArray arBodyPtrs;
 	if ( Acad::eOk == AcDbBody::acisIn(sFullPath,arBodyPtrs) )
@@ -138,7 +137,7 @@ void CJMSJDlg::OnBnClickedBtaddtodb()
 	UpdateData(TRUE);
 
 	if (!m_curSection.pReg) return;
-	CString sFullPath = GetPoolSectionSatPath(FilePath::getSystemTemporaryFolder());
+	CString sFullPath = CoreTools::getTempFilePath(_T("JMSJ_"), _T(".sat"), FilePath::getSystemTemporaryFolder());
 
 	CString sRegionScrp = _T("");
 	CString sLine;
@@ -424,7 +423,7 @@ void CJMSJDlg::OnBnClickedBtselfromdb()
 		CString sScr,sScrT;
 		if (dlg.GetCrossSectionScr(sScr))
 		{
-			CString sFullPath = GetPoolSectionSatPath(FilePath::getSystemTemporaryFolder());
+			CString sFullPath = CoreTools::getTempFilePath(_T("JMSJ_"), _T(".sat"), FilePath::getSystemTemporaryFolder());
 
 			CStdioFile file;
 			if (file.Open(sFullPath,CFile::modeCreate |CFile::modeWrite ))