State of the leaks

```
on Windows => some leaks reported by Dr Memory and Inspector

On Mac => we leak some resources (shared lib handles, cocoa classes even) mainly because pragma(crt_destructor) didn't exist back then. All should be reclaimed when the host program dies. Even pragma(crt_destructor) is only called when the host program dies and there is no real way to do it otherwise that I know of.(modifié)
On Linux => I don't know, probably something similar to Mac?
to be explicit on Posix I know no methods of cleaning up a global variable when a plugin is unloaded, vs when the hosts dies. Because the dynlib is NOT unloaded from memory when you dlclose it.
```

No files, tests, or entry points are identified. Start by reproducing the reported Windows leaks with Dr Memory and Inspector, then compare resource cleanup on macOS and Linux. Done means the cross-platform cleanup behavior is understood and the reported leaks are addressed or their limitations are documented.

Written by the indexing model from the issue text.