v9 patch: fix macOS 26 SDK compilation error

Replace extern NSString* declarations with raw string literals
(@"AXTextStateChangeType" etc.) to avoid redeclaration type conflict
with NSAccessibilityConstants.h on macOS 26 Tahoe SDK where these
symbols were added to public headers.

patches/0001-ns-implement-AXBoundsForRange-for-macOS-Zoom-cursor-.patch

@@ -1,5 +1,5 @@
 From: Martin Sukany <martin@sukany.cz>
-Date: Tue, 25 Feb 2026 20:45:00 +0100
+Date: Tue, 25 Feb 2026 21:00:00 +0100
 Subject: [PATCH] ns: implement macOS Zoom cursor tracking and VoiceOver
  support
 
@@ -25,9 +25,9 @@ Add comprehensive accessibility support for macOS:
      FocusedUIElementChanged (window focus)
    Ref: https://developer.apple.com/documentation/appkit/nsaccessibilityprotocol
 
-accessibilityFrame returns the view's frame (not cursor rect) to avoid
-VoiceOver drawing a duplicate cursor overlay.  Cursor position is exposed
-only via accessibilityBoundsForRange:.
+Uses raw string literals ("AXTextStateChangeType" etc.) for semi-private
+notification keys to avoid type conflicts between SDK versions (these
+symbols were added to public AppKit headers in macOS 26).
 ---
 diff --git a/src/nsterm.h b/src/nsterm.h
 index 7c1ee4c..5e5f61b 100644
@@ -45,22 +45,20 @@ index 7c1ee4c..5e5f61b 100644
  
  /* AppKit-side interface.  */
 diff --git a/src/nsterm.m b/src/nsterm.m
-index 932d209..8dc5915 100644
+index 932d209..6bfc080 100644
 --- a/src/nsterm.m
 +++ b/src/nsterm.m
-@@ -3232,6 +3232,117 @@ Note that CURSOR_WIDTH is meaningful only for (h)bar cursors.
+@@ -3232,6 +3232,115 @@ Note that CURSOR_WIDTH is meaningful only for (h)bar cursors.
    /* Prevent the cursor from being drawn outside the text area.  */
    r = NSIntersectionRect (r, ns_row_rect (w, glyph_row, TEXT_AREA));
  
 +#ifdef NS_IMPL_COCOA
-+  /* Semi-private NSAccessibility keys for rich text change notifications.
-+     These symbols are exported by AppKit.framework (macOS 10.11+) and used
-+     by WebKit for VoiceOver typing echo.  Declared extern here because
-+     they are not in the public AppKit headers.  */
-+  extern NSString *NSAccessibilityTextStateChangeTypeKey;
-+  extern NSString *NSAccessibilityTextChangeValues;
-+  extern NSString *NSAccessibilityTextEditType;
-+  extern NSString *NSAccessibilityTextChangeValue;
++  /* NSAccessibility keys for rich text change notifications.
++     Used by WebKit/Safari for VoiceOver typing echo.  These symbols
++     have been exported by AppKit since macOS 10.11 but were only
++     added to the public headers in the macOS 26 SDK.  We use raw
++     string literals here to avoid redeclaration type conflicts
++     across different SDK versions.  */
 +
 +  /* Accessibility cursor tracking for macOS Zoom and VoiceOver.
 +
@@ -121,12 +119,12 @@ index 932d209..8dc5915 100644
 +		   kAXTextStateChangeTypeEdit = 1, kAXTextEditTypeTyping = 3.  */
 +
 +		NSDictionary *change = @{
-+		  NSAccessibilityTextEditType: @3,
-+		  NSAccessibilityTextChangeValue: changedText
++		  @"AXTextEditType": @3,
++		  @"AXTextChangeValue": changedText
 +		};
 +		NSDictionary *userInfo = @{
-+		  NSAccessibilityTextStateChangeTypeKey: @1,
-+		  NSAccessibilityTextChangeValues: @[change]
++		  @"AXTextStateChangeType": @1,
++		  @"AXTextChangeValues": @[change]
 +		};
 +		NSAccessibilityPostNotificationWithUserInfo (
 +		  view, NSAccessibilityValueChangedNotification, userInfo);
@@ -166,7 +164,7 @@ index 932d209..8dc5915 100644
    ns_focus (f, NULL, 0);
  
    NSGraphicsContext *ctx = [NSGraphicsContext currentContext];
-@@ -8237,6 +8348,14 @@ - (void)windowDidBecomeKey      /* for direct calls */
+@@ -8237,6 +8346,14 @@ - (void)windowDidBecomeKey      /* for direct calls */
    XSETFRAME (event.frame_or_window, emacsframe);
    kbd_buffer_store_event (&event);
    ns_send_appdefined (-1);  // Kick main loop
@@ -181,7 +179,7 @@ index 932d209..8dc5915 100644
  }
  
  
-@@ -9474,6 +9593,421 @@ - (int) fullscreenState
+@@ -9474,6 +9591,421 @@ - (int) fullscreenState
    return fs_state;
  }