fix(tauri): hide Windows CLI console window

Set CREATE_NO_WINDOW on the spawned local CLI process so the packaged Windows Tauri app does not flash an extra console window when it launches Node.

packages/tauri-app/src-tauri/src/cli_manager.rs

@@ -17,10 +17,23 @@ use std::thread;
 use std::time::{Duration, Instant};
 use tauri::{webview::cookie::Cookie, AppHandle, Emitter, Manager, Url};
 
+#[cfg(windows)]
+use std::os::windows::process::CommandExt;
+
+#[cfg(windows)]
+const CREATE_NO_WINDOW: u32 = 0x08000000;
+
 fn log_line(message: &str) {
     println!("[tauri-cli] {message}");
 }
 
+fn configure_spawn(command: &mut Command) {
+    #[cfg(windows)]
+    {
+        command.creation_flags(CREATE_NO_WINDOW);
+    }
+}
+
 fn workspace_root() -> Option<PathBuf> {
     std::env::current_dir().ok().and_then(|mut dir| {
         for _ in 0..3 {
@@ -456,6 +469,7 @@ impl CliProcessManager {
                     .env("ELECTRON_RUN_AS_NODE", "1")
                     .stdout(Stdio::piped())
                     .stderr(Stdio::piped());
+                configure_spawn(&mut c);
                 if let Some(ref cwd) = cwd {
                     c.current_dir(cwd);
                 }
@@ -468,6 +482,7 @@ impl CliProcessManager {
                     .env("ELECTRON_RUN_AS_NODE", "1")
                     .stdout(Stdio::piped())
                     .stderr(Stdio::piped());
+                configure_spawn(&mut c);
                 if let Some(ref cwd) = cwd {
                     c.current_dir(cwd);
                 }