Logger.attach_suite is not exposed in Python bindings

[elliotmelcer]

Summary

Logger::attach_suite exists in C++ and controls the "suite" field in the Analyzer's JSON output, but it's not exposed to Python. There's no way to set the suite name from Python when using wrap_problem, so JSONs always show "suite": "None".

Reproduction

import ioh
lg = ioh.logger.Analyzer(folder_name="demo")
lg.attach_suite("MySuite")
# AttributeError: 'ioh.iohcpp.logger.Analyzer' object has no attribute 'attach_suite'

Tested on ioh 0.3.22 (pip), Python 3.12, Windows 11.

Root cause

In ioh/src/logger.cpp, define_bases binds add_trigger, call, reset, and problem on Logger — but not attach_suite. The AbstractWatcher trampoline has an override hook for it, but the underlying method was never .def()-ed, so it can't be called from Python. The .pyi stub lists it on Logger, which is misleading.

Suggested fix

One line in define_bases:

.def("attach_suite", &Logger::attach_suite, py::arg("suite_name"),
     "Set the current suite name (written to the 'suite' field in Analyzer JSON output)")