fix: ensure terminal tabs are reconstructed in main window after toggling visibility

macos/Sources/App/macOS/AppDelegate.swift

@@ -706,20 +706,42 @@ class AppDelegate: NSObject,
 
     /// Toggles visibility of all Ghosty Terminal windows. When hidden, activates Ghostty as the frontmost application
     @IBAction func toggleVisibility(_ sender: Any) {
-        // We only care about terminal windows.
-        for window in NSApp.windows.filter({ $0.windowController is BaseTerminalController }) {
-            if isVisible {
-                window.orderOut(nil)
-            } else {
-                window.makeKeyAndOrderFront(nil)
+        if let mainWindow = terminalManager.mainWindow {
+            guard let parent = mainWindow.controller.window else {
+                Self.logger.debug("could not get parent window")
+                return
+            }
+            
+            guard let controller = parent.windowController as? TerminalController,
+                  let primaryWindow = controller.window else {
+                Self.logger.debug("Could not retrieve primary window")
+                return
+            }
+            
+            // Fetch all terminal windows controlled by BaseTerminalController
+            for terminalWindow in NSApp.windows.filter({ $0.windowController is BaseTerminalController }) {
+                if isVisible {
+                    terminalWindow.orderOut(nil)
+                } else {
+                    primaryWindow.makeKeyAndOrderFront(nil)
+                    primaryWindow.addTabbedWindow(terminalWindow, ordered: .above)
+                }
+            }
+            
+            // If our parent tab group already has this window, macOS added it and
+            // we need to remove it so we can set the correct order in the next line.
+            // If we don't do this, macOS gets really confused and the tabbedWindows
+            // state becomes incorrect.
+            if let tg = parent.tabGroup, tg.windows.firstIndex(of: parent) != nil {
+                tg.removeWindow(parent)
             }
         }
-
+        
         // After bringing them all to front we make sure our app is active too.
         if !isVisible {
             NSApp.activate(ignoringOtherApps: true)
         }
-
+        
         isVisible.toggle()
     }
 

macos/Sources/Features/Terminal/TerminalManager.swift

@@ -26,7 +26,7 @@ class TerminalManager {
 
     /// Returns the main window of the managed window stack. If there is no window
     /// then an arbitrary window will be chosen.
-    private var mainWindow: Window? {
+    var mainWindow: Window? {
         for window in windows {
             if (window.controller.window?.isMainWindow ?? false) {
                 return window