Bonus: Fix LaunchBehavior::Quit crashing game on Unix

Author: yungcomputerchair

src-tauri/src/lib.rs

@@ -18,6 +18,7 @@ use util::AlertVariant;
 use std::{
     collections::{HashMap, HashSet},
     env,
+    process::Stdio,
     sync::{mpsc, Arc, LazyLock, OnceLock},
     vec,
 };
@@ -668,6 +669,12 @@ async fn prep_launch(
             }
         }
 
+        // Detach stdio so the child doesn't crash from broken pipes
+        // when the launcher exits (e.g. LaunchBehavior::Quit)
+        cmd.stdin(Stdio::null());
+        cmd.stdout(Stdio::null());
+        cmd.stderr(Stdio::null());
+
         util::log_command(&cmd);
         state.launch_cmd = Some(cmd);
         Ok(timeout_sec)