jquery.js has become obsolete in doxygen

[albert-github]

As off doxygen/doxygen@c13c5f7 (February 09, 2026) the usage if jquery has been removed completely from doxygen, so the file is nut present in the (master) version of doxygen anymore and is removed from the header files. Furthermore some old (obsolete since doxygen 1.14.0 / 1.15.0) calls are removed and a double include has been removed.

[albert-github]

Ready to be tested, would be nice to have this in the overnight, documentation, testing as well.

[albert-github]

The fact that the overnight documentation build CGAL-6.2-Ic-114 (see https://cgal.geometryfactory.com/CGAL/Manual_doxygen_test/) didn't build is also a consequence of the recent changes in doxygen i.e. the dynsections.js is only written by doxygen when HTML_DYNAMIC_SECTIONS=YES (default in NO).

[albert-github]

Ping to set this proposed PR to "Under testing" (so we see again results of the overnight documentation master builds)

Error occurs in he post processing in the call of:

    re_replace_in_file("'src','ftv2",
                       "'src','../Manual/ftv2",
                       os.path.join('Manual','dynsections.js') )

of Documentation/doc/scripts/html_output_post_processing.py
but as written in #9321 (comment) for the master version now the setting HTML_DYNAMIC_SECTIONS=YES has to be present.

[sloriot]

Instead of shipping a copy of jquery, we should probably get rid of our usage? It's not clear to me where we need it.

[albert-github]

@sloriot
You need it in hack.js and most likely in statements starting like $(document) (and other statements starting with $)