Fix Git invokation on Windows (#313)

src-tauri/yaak-git/src/binary.rs

@@ -1,16 +1,38 @@
-use crate::error::Error::GitNotFound;
-use crate::error::Result;
 use std::path::Path;
-use std::process::Command;
+use std::process::{Command, Stdio};
+use crate::error::Result;
+
+#[cfg(target_os = "windows")]
+use std::os::windows::process::CommandExt;
+use crate::error::Error::GitNotFound;
+
+#[cfg(target_os = "windows")]
+const CREATE_NO_WINDOW: u32 = 0x0800_0000;
 
 pub(crate) fn new_binary_command(dir: &Path) -> Result<Command> {
-    let status = Command::new("git").arg("--version").status();
+    // 1. Probe that `git` exists and is runnable
+    let mut probe = Command::new("git");
+    probe.arg("--version").stdin(Stdio::null()).stdout(Stdio::null()).stderr(Stdio::null());
 
-    if let Err(_) = status {
+    #[cfg(target_os = "windows")]
+    {
+        probe.creation_flags(CREATE_NO_WINDOW);
+    }
+
+    let status = probe.status().map_err(|_| GitNotFound)?;
+
+    if !status.success() {
         return Err(GitNotFound);
     }
 
+    // 2. Build the reusable git command
     let mut cmd = Command::new("git");
     cmd.arg("-C").arg(dir);
+
+    #[cfg(target_os = "windows")]
+    {
+        cmd.creation_flags(CREATE_NO_WINDOW);
+    }
+
     Ok(cmd)
 }