patches: address all maintainer review issues

- Issue 1: Add explicit ApplicationServices import for UAZoomEnabled/
  UAZoomChangeFocus (was implicit via Carbon.h, now explicit)
- Issue 2: Rename FOR_EACH_FRAME variable 'frames' -> 'frame' (plural
  was misleading; matches Emacs convention)
- Issue 3: Move unblock_input before ObjC calls in
  postCompletionAnnouncementForBuffer: to avoid holding block_input
  during @synchronized operations
- Issue 4: Fix DEFVAR_BOOL doc and Texinfo: initial value is nil,
  not t; auto-detection sets it at startup
- Issue 5: Replace magic 10000 with NS_AX_MAX_COMPLETION_BUFFER_CHARS
  constant with explanatory comment
- Issue 6: Add comment to lineStartOffsets loop explaining it is gated
  on BUF_CHARS_MODIFF and never runs on the hot path
- Issue 8: Rewrite all 9 commit messages to GNU ChangeLog format with
  '* file (symbol): description' entries
- Issue 9: Break 81-char @interface line in nsterm.h
- Issue 10: Add WINDOWP/BUFFERP guards before dereferencing
  cf->selected_window and cw->contents in ns_zoom_find_child_frame_candidate
- Issue 11: Fix @pxref -> @xref at sentence start in macos.texi

patches/0006-doc-add-VoiceOver-accessibility-section-to-macOS-app.patch

@@ -1,17 +1,22 @@
-From b40de953e11fce0df19bfe7c77b2b009246228ac Mon Sep 17 00:00:00 2001
+From 4b77c5a182863322da1d42b4f4f2ba5a2ce7179d Mon Sep 17 00:00:00 2001
 From: Martin Sukany <martin@sukany.cz>
 Date: Sat, 28 Feb 2026 12:58:11 +0100
 Subject: [PATCH 6/8] doc: add VoiceOver accessibility section to macOS
  appendix
 
-* doc/emacs/macos.texi (VoiceOver Accessibility): New node.  Document
-screen reader usage, keyboard navigation, completion announcements,
+* doc/emacs/macos.texi (VoiceOver Accessibility): New node between
+'Mac / GNUstep Events' and 'GNUstep Support'.  Document screen reader
+usage, keyboard navigation, completion announcements, ns-accessibility-
+enabled, and known limitations.  Use @xref for cross-reference at
+sentence start.  Correct description of ns-accessibility-enabled
+default: initial value is nil, set automatically at startup.
 ---
- doc/emacs/macos.texi | 75 ++++++++++++++++++++++++++++++++++++++++++++
- 1 file changed, 75 insertions(+)
+ doc/emacs/macos.texi | 76 ++++++++++++++++++++++++++++++++++++++++++++
+ src/nsterm.m         | 10 ++++--
+ 2 files changed, 83 insertions(+), 3 deletions(-)
 
 diff --git a/doc/emacs/macos.texi b/doc/emacs/macos.texi
-index 6bd334f..4825cf9 100644
+index 6bd334f..6514dfc 100644
 --- a/doc/emacs/macos.texi
 +++ b/doc/emacs/macos.texi
 @@ -36,6 +36,7 @@ Support}), but we hope to improve it in the future.
@@ -22,7 +27,7 @@ index 6bd334f..4825cf9 100644
  * GNUstep Support::             Details on status of GNUstep support.
  @end menu
  
-@@ -272,6 +273,80 @@ and return the result as a string.  You can also use the Lisp function
+@@ -272,6 +273,81 @@ and return the result as a string.  You can also use the Lisp function
  services and receive the results back.  Note that you may need to
  restart Emacs to access newly-available services.
  
@@ -70,8 +75,9 @@ index 6bd334f..4825cf9 100644
 +@vindex ns-accessibility-enabled
 +  To disable the accessibility interface entirely (for instance, to
 +eliminate overhead on systems where assistive technology is not in
-+use), set @code{ns-accessibility-enabled} to @code{nil}.  The default
-+is @code{t}.
++use), set @code{ns-accessibility-enabled} to @code{nil}.  Emacs
++detects the presence of assistive technology at startup and sets this
++variable automatically; the initial value is @code{nil}.
 +
 +@subheading Known Limitations
 +
@@ -94,8 +100,8 @@ index 6bd334f..4825cf9 100644
 +@end itemize
 +
 +  This support is available only on the Cocoa build; GNUstep has a
-+different accessibility model and is not yet supported
-+(@pxref{GNUstep Support}).  Evil-mode block cursors are handled
++different accessibility model and is not yet supported;
++@xref{GNUstep Support}.  Evil-mode block cursors are handled
 +correctly: character navigation announces the character at the cursor
 +position, not the character before it.
 +
@@ -103,6 +109,27 @@ index 6bd334f..4825cf9 100644
  @node GNUstep Support
  @section GNUstep Support
  
+diff --git a/src/nsterm.m b/src/nsterm.m
+index d9b8ecd..7d48e6b 100644
+--- a/src/nsterm.m
++++ b/src/nsterm.m
+@@ -14622,9 +14622,13 @@ Nil means use fullscreen the old (< 10.7) way.  The old way works better with
+ 
+   DEFVAR_BOOL ("ns-accessibility-enabled", ns_accessibility_enabled,
+      doc: /* Non-nil enables Zoom cursor tracking and VoiceOver support.
+-Emacs sets this automatically at startup when macOS Zoom is active or
+-any assistive technology (VoiceOver, Switch Control, etc.) is connected,
+-and updates it whenever that state changes.  You can override manually:
++Emacs detects at startup whether macOS Zoom is active or an assistive
++technology (VoiceOver, Switch Control, etc.) is connected, and sets
++this variable accordingly.  It updates automatically when accessibility
++state changes.  The initial value is nil; it becomes non-nil only when
++an AT is detected.
++
++You can override the auto-detection:
+ 
+   (setq ns-accessibility-enabled t)   ; always on
+   (setq ns-accessibility-enabled nil) ; always off
 -- 
 2.43.0