fix: reduced app size by a good margin

crates/bds-ui/build.rs

@@ -1,6 +1,12 @@
 fn main() {
     println!("cargo:rerun-if-changed=assets/app-icons/bds.ico");
 
+    // Wry and bds-core both reach objc2's native exception helper across
+    // separate Rust dylibs, so retain the static helper on the UI link line.
+    if std::env::var("CARGO_CFG_TARGET_OS").as_deref() == Ok("macos") {
+        println!("cargo:rustc-link-arg=-lobjc2_exception_helper_0_1");
+    }
+
     if std::env::var("CARGO_CFG_TARGET_OS").as_deref() == Ok("windows") {
         winresource::WindowsResource::new()
             .set_icon("assets/app-icons/bds.ico")