Add flag for quick terminal

macos/Sources/Features/QuickTerminal/QuickTerminalController.swift

@@ -342,7 +342,10 @@ class QuickTerminalController: BaseTerminalController {
         // animate out.
         if surfaceTree.isEmpty,
            let ghostty_app = ghostty.app {
-            let view = Ghostty.SurfaceView(ghostty_app, baseConfig: nil)
+            var config = Ghostty.SurfaceConfiguration()
+            config.environmentVariables["GHOSTTY_QUICK_TERMINAL"] = "1"
+
+            let view = Ghostty.SurfaceView(ghostty_app, baseConfig: config)
             surfaceTree = SplitTree(view: view)
             focusedSurface = view
         }

src/apprt/gtk/class/surface.zig

@@ -1465,6 +1465,10 @@ pub const Surface = extern struct {
         // EnvMap is a bit annoying so I'm punting it.
         if (ext.getAncestor(Window, self.as(gtk.Widget))) |window| {
             try window.winproto().addSubprocessEnv(&env);
+
+            if (window.isQuickTerminal()) {
+                try env.put("GHOSTTY_QUICK_TERMINAL", "1");
+            }
         }
 
         return env;