fix steam integration

frontend/src-tauri/build.rs

@@ -1,3 +1,42 @@
-fn main() {
-  tauri_build::build()
+use std::{env, fs::{self, read_dir}, path::{Path, PathBuf}};
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    tauri_build::build();
+
+    let out_dir = PathBuf::from(env::var("OUT_DIR")?);
+
+    let profile_target_dir = out_dir
+        .ancestors()
+        .nth(3)
+        .ok_or("Failed to determine profile target directory from OUT_DIR")?;
+
+    println!(
+        "cargo:info=Build script running for target OS: {}",
+        env::var("CARGO_CFG_TARGET_OS").unwrap_or_default()
+    );
+    println!(
+        "cargo:info=Final libraries will be copied to: {}",
+        profile_target_dir.display()
+    );
+
+    // --- Define libraries and their source locations based on OS ---
+    let target_os = env::var("CARGO_CFG_TARGET_OS")?;
+
+    let source_subdir = if target_os == "windows" {
+        "lib/win64"
+    } else if target_os == "linux" {
+        "lib/linux64"
+    } else if target_os == "macos" {
+        "lib/osx"
+    } else {
+        return Err("Unsupported target".into());
+    };
+
+    for f in read_dir(source_subdir)? {
+        let f = f?;
+        println!("cargo:rerun-if-changed={}", f.path().display());
+        fs::copy(f.path(), profile_target_dir.join(f.file_name()))?;
+    }
+
+    Ok(())
 }