macos: Address window spawning and ordering issues from service.

macos/Sources/AppDelegate.swift

@@ -104,12 +104,6 @@ class AppDelegate: NSObject,
         // Initial config loading
         configDidReload(ghostty)
         
-        // Let's launch our first window. We only do this if we have no other windows. It
-        // is possible to have other windows if we're opening a URL since `application(_:openFile:)`
-        // is called before this.
-        if (terminalManager.windows.count == 0) {
-            terminalManager.newWindow()
-        }
         
         // Register our service provider. This must happen after everything
         // else is initialized.
@@ -132,6 +126,18 @@ class AppDelegate: NSObject,
         center.delegate = self
     }
 
+    func applicationDidBecomeActive(_ notification: Notification) {
+        // Let's launch our first window. We only do this if we have no other windows. It
+        // is possible to have other windows if we're opening a URL since `application(_:openFile:)`
+        // is called before this.
+        if (ghostty.firstLaunch) {
+            if terminalManager.windows.count == 0 {
+                terminalManager.newWindow()
+            }
+            ghostty.firstLaunch = false
+        }
+    }
+
     func applicationShouldTerminateAfterLastWindowClosed(_ sender: NSApplication) -> Bool {
         return ghostty.shouldQuitAfterLastWindowClosed
     }

macos/Sources/Features/Terminal/TerminalManager.swift

@@ -33,8 +33,8 @@ class TerminalManager {
             }
         }
         
-        // If we have no main window, just use the first window.
-        return windows.first
+        // If we have no main window, just use the last window.
+        return windows.last
     }
     
     init(_ ghostty: Ghostty.AppState) {

macos/Sources/Ghostty/AppState.swift

@@ -36,6 +36,9 @@ extension Ghostty {
         /// Optional delegate
         weak var delegate: GhosttyAppStateDelegate?
 
+        /// True when application is first launched. Immidiately set to false after first window is shown.
+        var firstLaunch: Bool = true
+
         /// The ghostty global configuration. This should only be changed when it is definitely
         /// safe to change. It is definite safe to change only when the embedded app runtime
         /// in Ghostty says so (usually, only in a reload configuration callback).