feat: implement toggleMaximize for macOS

macos/Sources/App/macOS/AppDelegate.swift

@@ -807,6 +807,12 @@ class AppDelegate: NSObject,
         setSecureInput(.toggle)
     }
 
+    @IBAction func toggleMaximize(_ sender: Any) {
+        if NSApp.isActive, let keyWindow = NSApp.keyWindow {
+            keyWindow.zoom(self)
+        }
+    }
+
     @IBAction func toggleQuickTerminal(_ sender: Any) {
         if quickController == nil {
             quickController = QuickTerminalController(

macos/Sources/Features/Command Palette/TerminalCommandPalette.swift

@@ -29,7 +29,6 @@ struct TerminalCommandPaletteView: View {
             let key = String(cString: c.action_key)
             switch (key) {
             case "toggle_tab_overview",
-                 "toggle_maximize",
                 "toggle_window_decorations":
                 return false
             default:

macos/Sources/Ghostty/Ghostty.App.swift

@@ -523,6 +523,9 @@ extension Ghostty {
             case GHOSTTY_ACTION_TOGGLE_COMMAND_PALETTE:
                 toggleCommandPalette(app, target: target)
 
+            case GHOSTTY_ACTION_TOGGLE_MAXIMIZE:
+                toggleMaximize(app, target: target)
+
             case GHOSTTY_ACTION_TOGGLE_QUICK_TERMINAL:
                 toggleQuickTerminal(app, target: target)
 
@@ -767,6 +770,14 @@ extension Ghostty {
             }
         }
 
+        private static func toggleMaximize(
+            _ app: ghostty_app_t,
+            target: ghostty_target_s
+        ) {
+            guard let appDelegate = NSApplication.shared.delegate as? AppDelegate else { return }
+            appDelegate.toggleMaximize(self)
+        }
+
         private static func toggleVisibility(
             _ app: ghostty_app_t,
             target: ghostty_target_s