Prepare Doxygen Sources

Prepare Doxygen-compatible source headers in _doxygen_input. Sphinx invokes this command automatically, so ordinary documentation work usually uses doc-build instead.

./erbsland-core-tool doc-preprocess-sources

Use --force to regenerate despite a matching cache marker. The generated directory is disposable; review the source transformations when changing this command.

See Run and Configure Commands for shared invocation options and Documentation Maintenance Reference for the technical contracts.