The Rugnux library and the rugnux executable differ only in case, so on a
case-insensitive filesystem (macOS, Windows) their CMakeFiles/<target>.dir
directories collide and the executable's build.make overwrites the library's
("No rule to make target rugnux/CMakeFiles/Rugnux.dir/depend"). The library is
renamed JFJochRugnux, in line with the other libraries.
Apple's linker rejects the TLS wrapper clang emits for the inline thread_local
static member WorkerPool::in_worker as a duplicate symbol once it is included
from several libraries. It is now a function-local thread_local.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
