rerun build script if a source file changed

crates/kshell/build.rs

@@ -18,6 +18,7 @@ fn main() {
         let os_canonical = path.canonicalize().unwrap();
         let path = Path::new("/").join(path.strip_prefix(from).unwrap());
 
+        println!("cargo:rerun-if-changed={os_canonical:?}");
         writeln!(
             asset_rs_file,
             "    ({path:?}, include_bytes!({os_canonical:?})),",