macos: when executing a script directly, always wait after command

macos/Sources/App/macOS/AppDelegate.swift

@@ -412,6 +412,11 @@ class AppDelegate: NSObject,
             // due to things like Homebrew. Instead, we set the command to
             // `<filename>; exit` which is what Terminal and iTerm2 do.
             config.initialInput = "\(filename); exit\n"
+            
+            // For commands executed directly, we want to ensure we wait after exit
+            // because in most cases scripts don't block on exit and we don't want
+            // the window to just flash closed once complete.
+            config.waitAfterCommand = true
 
             // Set the parent directory to our working directory so that relative
             // paths in scripts work.

macos/Sources/Ghostty/SurfaceView.swift

@@ -424,6 +424,9 @@ extension Ghostty {
 
         /// Extra input to send as stdin
         var initialInput: String? = nil
+        
+        /// Wait after the command
+        var waitAfterCommand: Bool = false
 
         init() {}
 
@@ -475,6 +478,9 @@ extension Ghostty {
 
             // Zero is our default value that means to inherit the font size.
             config.font_size = fontSize ?? 0
+            
+            // Set wait after command
+            config.wait_after_command = waitAfterCommand
 
             // Use withCString to ensure strings remain valid for the duration of the closure
             return try workingDirectory.withCString { cWorkingDir in