This directory is generated by scripts/export_runtime.sh.
It intentionally excludes upstream SOLAR's large tests/ directory and Git
history. It keeps only the executable, source needed to rebuild the executable,
license/readme files, OptiProfiler metadata, and the upstream manifest.
Language-specific wrapper repositories may copy this runtime source without
committing bin/solar or src/*.o; those generated files should be rebuilt by
CI, the server, or the user's local machine.
This runtime source includes the adapter's Linux build compatibility patch for
one upstream isnan call, rewritten as std::isnan.