// drops empty placeholders into dist/ if the wasm-pack output is missing, so the server bin compiles standalone via cargo check.
// the real bytes get written by scripts/web/build.sh phase 1 (wasm-pack) right before phase 2 (cargo build) embeds them.

fn main() {
    let dist = std::path::Path::new("dist");
    let _ = std::fs::create_dir_all(dist);

    let path = dist.join("index.html");
    if !path.exists() {
        let _ = std::fs::write(&path, b"");
        println!(
            "cargo:warning=missing {}, wrote empty placeholder. run scripts/web/build.sh to produce the real bundle.",
            path.display()
        );
    }
    println!("cargo:rerun-if-changed={}", path.display());
}