Added:

- `sharedlib` build kind (shared library output)
- ASM projects (`build.language = "asm"`)
- NASM and GAS backends
- `build.platform` architecture hint for `-march` / `/arch`
- Basic CLI integration tests

src/core/builder/mod.rs

@@ -1,4 +1,5 @@
 pub mod clang;
+pub mod gas;
 pub mod gcc;
 pub mod gas;
 pub mod msvc;