fix: resolve CI workflow issues for documentation and xmake

- Enable XML generation in Doxyfile (GENERATE_XML=YES) for Sphinx/Exhale compatibility
- Remove obsolete Doxygen tags (HTML_TIMESTAMP, LATEX_TIMESTAMP, RTF_*) to eliminate warnings
- Simplify xmake installation on Windows CI using official installer only
- Add docs/generated/ to .gitignore to exclude auto-generated documentation
- Both documentation and test CI workflows should now work correctly

Author: WenyinWei

.github/workflows/tests.yml

@@ -87,15 +87,7 @@ jobs:
 
     - name: Install xmake
       run: |
-        # Try chocolatey first, then fallback to official installer
-        try {
-          choco install xmake -y
-        } catch {
-          Write-Host "Chocolatey installation failed, trying official installer..."
-          Invoke-Expression (Invoke-Webrequest 'https://xmake.io/psget.text' -UseBasicParsing).Content
-          $env:PATH = "$env:USERPROFILE\.local\bin;$env:PATH"
-          echo "$env:USERPROFILE\.local\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
-        }
+        Invoke-Expression (Invoke-Webrequest 'https://xmake.io/psget.text' -UseBasicParsing).Content
         
     - name: Verify xmake installation
       run: |

.gitignore

@@ -46,6 +46,9 @@
 .xmake/
 build/
 
+# Generated documentation
+docs/generated/
+
 # vscode config
 .vscode/
 

Doxyfile

@@ -49,7 +49,7 @@ HTML_EXTRA_FILES       =
 HTML_COLORSTYLE_HUE    = 220
 HTML_COLORSTYLE_SAT    = 100
 HTML_COLORSTYLE_GAMMA  = 80
-HTML_TIMESTAMP         = NO
+# HTML_TIMESTAMP is obsolete in newer Doxygen versions
 HTML_DYNAMIC_MENUS     = YES
 HTML_DYNAMIC_SECTIONS  = NO
 GENERATE_LATEX         = NO
@@ -61,20 +61,20 @@ LATEX_FOOTER           =
 LATEX_EXTRA_STYLESHEET = 
 LATEX_EXTRA_FILES      = 
 LATEX_BIB_STYLE        = plain
-LATEX_TIMESTAMP        = NO
+# LATEX_TIMESTAMP is obsolete in newer Doxygen versions
 LATEX_EMOJI_DIRECTORY  = 
 GENERATE_RTF           = NO
 RTF_OUTPUT             = rtf
 RTF_EXTENSIONS_FILE    = 
 RTF_STYLESHEET_FILE    = 
-RTF_LATEX_FONTSIZE     = 10
-RTF_TIMESTAMP          = NO
+# RTF_LATEX_FONTSIZE is obsolete in newer Doxygen versions
+# RTF_TIMESTAMP is obsolete in newer Doxygen versions
 GENERATE_MAN           = NO
 MAN_OUTPUT             = man
 MAN_EXTENSION          = .3
 MAN_SUBDIR             = 
 MAN_LINKS              = NO
-GENERATE_XML           = NO
+GENERATE_XML           = YES
 XML_OUTPUT             = xml
 XML_PROGRAMLISTING     = YES
 XML_NS_MEMB_FILE_SCOPE = NO
@@ -178,7 +178,7 @@ DISABLE_INDEX          = NO
 ENUM_VALUES_PER_LINE   = 4
 GENERATE_HTML          = YES
 HTML_DYNAMIC_SECTIONS  = NO
-HTML_TIMESTAMP         = NO
+# HTML_TIMESTAMP is obsolete in newer Doxygen versions
 GENERATE_TREEVIEW      = YES
 TREEVIEW_WIDTH         = 250
 
@@ -242,7 +242,7 @@ HTML_OUTPUT            = html
 GENERATE_LATEX         = NO
 GENERATE_RTF           = NO
 GENERATE_MAN           = NO
-GENERATE_XML           = NO
+GENERATE_XML           = YES
 GENERATE_DOCBOOK       = NO
 
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