chore: Library::open_by takes its notifier boxed, compiling once instead of once per caller
Its instantiations shrink from 392 KB to 128 KB. Release executables after the
debug split: Linux x86_64 48.78 to 48.45 MB (-0.33), macOS aarch64 34.85 to 34.49 MB
(-0.36).
Assisted-by: claude-opus-5.5
755934ca6dclover caruso committed on 10/3/2026, 10:13:32 PMparent7865e77