refactor(setup): move create_env_files from vite_installer to vite_setup

This function follows the same pattern as refresh_shims (spawn vp with
different args) and belongs in the shared library alongside it.

Author: fengmk2

crates/vite_installer/src/main.rs

@@ -207,7 +207,7 @@ async fn do_install(
             print_warn(&format!("Node.js manager setup failed (non-fatal): {e}"));
         }
     } else {
-        if let Err(e) = create_env_files(install_dir).await {
+        if let Err(e) = install::create_env_files(install_dir).await {
             print_warn(&format!("Env file creation failed (non-fatal): {e}"));
         }
     }
@@ -353,23 +353,6 @@ async fn download_with_progress(
     Ok(data)
 }
 
-async fn create_env_files(
-    install_dir: &vite_path::AbsolutePath,
-) -> Result<(), Box<dyn std::error::Error>> {
-    let vp_binary = install_dir.join("current").join("bin").join(VP_BINARY_NAME);
-
-    if !tokio::fs::try_exists(&vp_binary).await.unwrap_or(false) {
-        return Ok(());
-    }
-
-    tokio::process::Command::new(vp_binary.as_path())
-        .args(["env", "setup", "--env-only"])
-        .output()
-        .await?;
-
-    Ok(())
-}
-
 fn resolve_install_dir(opts: &cli::Options) -> Result<AbsolutePathBuf, Box<dyn std::error::Error>> {
     if let Some(ref dir) = opts.install_dir {
         let path = std::path::PathBuf::from(dir);

crates/vite_setup/src/install.rs

@@ -319,6 +319,26 @@ pub async fn refresh_shims(install_dir: &AbsolutePath) -> Result<(), Error> {
     Ok(())
 }
 
+/// Create shell env files by running `vp env setup --env-only`.
+///
+/// Used when the Node.js manager is disabled — ensures env files exist
+/// even without a full shim refresh.
+pub async fn create_env_files(install_dir: &AbsolutePath) -> Result<(), Error> {
+    let vp_binary =
+        install_dir.join("current").join("bin").join(if cfg!(windows) { "vp.exe" } else { "vp" });
+
+    if !tokio::fs::try_exists(&vp_binary).await.unwrap_or(false) {
+        return Ok(());
+    }
+
+    tokio::process::Command::new(vp_binary.as_path())
+        .args(["env", "setup", "--env-only"])
+        .output()
+        .await?;
+
+    Ok(())
+}
+
 /// Clean up old version directories, keeping at most `max_keep` versions.
 ///
 /// Sorts by creation time (newest first, matching install.sh behavior) and removes