Fix email module integration - update build and UI server

build.rs

@@ -1,3 +1,5 @@
-
 fn main() {
-}
+    let manifest_dir = std::env::var("CARGO_MANIFEST_DIR").unwrap();
+    let ui_path = std::path::Path::new(&manifest_dir).join("ui");
+    println!("cargo:rustc-env=BOTUI_UI_PATH={}", ui_path.display());
+}

src/ui_server/mod.rs

@@ -25,7 +25,7 @@ use tower_http::services::{ServeDir, ServeFile};
 
 #[cfg(feature = "embed-ui")]
 #[derive(RustEmbed)]
-#[folder = "$CARGO_MANIFEST_DIR/ui"]
+#[folder = "ui"]
 struct Assets;
 
 use crate::shared::AppState;