Keep lastFocusState in sync with AppKit responder focus calls

The becomeFirstResponder, resignFirstResponder, and ctrl-key fast paths
call ghostty_surface_set_focus directly without updating lastFocusState.
This could cause the dedup guard in setFocus() to skip a needed call, or
createSurface() to replay a stale state on surface recreation.

Add recordExternalFocusState() and call it alongside each direct C focus
call so lastFocusState stays authoritative.

Author: lawrencecchen

Sources/GhosttyTerminalView.swift

@@ -3680,6 +3680,13 @@ final class TerminalSurface: Identifiable, ObservableObject {
         surfaceView.applyWindowBackgroundIfActive()
     }
 
+    /// Keep `lastFocusState` in sync when the hosted view's responder chain
+    /// calls `ghostty_surface_set_focus` directly (bypassing `setFocus`).
+    /// Without this, `createSurface` would replay a stale state on recreation.
+    func recordExternalFocusState(_ focused: Bool) {
+        lastFocusState = focused
+    }
+
     func setFocus(_ focused: Bool) {
         // Only send focus events when the state changes to avoid redundant
         // prompt redraws with zsh themes like Powerlevel10k.
@@ -4960,6 +4967,7 @@ class GhosttyNSView: NSView, NSUserInterfaceValidations {
                     ]
                 )
             }
+            terminalSurface?.recordExternalFocusState(true)
             ghostty_surface_set_focus(surface, true)
 
             // Ghostty only restarts its vsync display link on display-id changes while focused.
@@ -4983,6 +4991,7 @@ class GhosttyNSView: NSView, NSUserInterfaceValidations {
             let now = CACurrentMediaTime()
             let deltaMs = (now - lastScrollEventTime) * 1000
             Self.focusLog("resignFirstResponder: surface=\(terminalSurface?.id.uuidString ?? "nil") deltaSinceScrollMs=\(String(format: "%.2f", deltaMs))")
+            terminalSurface?.recordExternalFocusState(false)
             ghostty_surface_set_focus(surface, false)
         }
         return result
@@ -5270,6 +5279,7 @@ class GhosttyNSView: NSView, NSUserInterfaceValidations {
         // This avoids intermittent drops after rapid split close/reparent transitions.
         let flags = event.modifierFlags.intersection(.deviceIndependentFlagsMask)
         if flags.contains(.control) && !flags.contains(.command) && !flags.contains(.option) && !hasMarkedText() {
+            terminalSurface?.recordExternalFocusState(true)
             ghostty_surface_set_focus(surface, true)
             var keyEvent = ghostty_input_key_s()
             keyEvent.action = event.isARepeat ? GHOSTTY_ACTION_REPEAT : GHOSTTY_ACTION_PRESS