make dev composed the 1.6 GB debug static archive on every run, copied it twice, hashed it twice and statically linked it into the Go binary: a no-op make dev took about 19 seconds. Development builds (Meson's shared default_library) now compose a cdylib instead, which the Go binary loads at run time, as it did libiroh_streamplace.so before. Shipped and cross builds stay static. - The composition only runs when Cargo rebuilt an rlib or the composition changed, and its outputs are hard-linked, not copied. - The Iroh Go bindings only regenerate when Cargo relinks the library the generator reads. - A shared library needs no archive digest to make Go relink, so the generated digest file is gone and hack/native-go.sh passes through. - make native, which nothing called and which would now overwrite the development library, is gone. A no-op make dev is now about 2 seconds, and a Rust-only change relinks the library without relinking the Go binary.