patches: update TESTING.txt + README.txt for 0007/0008

TESTING: sections 14 (overlay completion) + 15 (child frame completion)
README: patch series listing, overlay/child frame architecture,
  textDidChange flag, focus restoration, new limitations

patches/TESTING.txt

@@ -11,13 +11,15 @@ Base: emacs master (upstream HEAD at time of test)
 
 1. Patch Application
 --------------------
-PASS — All 6 patches applied cleanly via git-am:
+PASS — All 8 patches applied cleanly via git-am:
   0001 ns: add accessibility base classes and text extraction
   0002 ns: implement buffer accessibility element (core protocol)
   0003 ns: add buffer notification dispatch and mode-line element
   0004 ns: add interactive span elements for Tab navigation
   0005 ns: integrate accessibility with EmacsView and redisplay
   0006 doc: add VoiceOver accessibility section to macOS appendix
+  0007 ns: announce overlay completion candidates for VoiceOver
+  0008 ns: announce child frame completion candidates for VoiceOver
 
 No conflicts, no warnings.
 
@@ -111,3 +113,32 @@ PASS — Ran 1 test, 1 result as expected:
   - ns-accessibility-enabled is bound                         OK
   - ns-accessibility-enabled defaults to t                    OK
   (ERT 1/1 passed, 2026-02-28 11:45:55 CET)
+
+14. VoiceOver — Overlay Completion (Patch 0007)
+------------------------------------------------
+PASS — Vertico minibuffer overlay completion:
+  - Vertico candidates announced on C-n / C-p navigation     OK
+  - Selected candidate face detected (vertico-current)        OK
+  - Deduplication: same candidate not re-announced            OK
+  - Zoom tracks selected candidate in minibuffer
+    (overlayZoomRect / overlayZoomActive lifecycle)            OK
+  - overlayZoomActive cleared on text input                   OK
+  - hl-line-mode compatibility: cursor movement in dired
+    and read-only buffers correctly announces lines
+    (textDidChange flag decouples modiff branch from
+    cursor-move branch)                                       OK
+
+15. VoiceOver — Child Frame Completion (Patch 0008)
+----------------------------------------------------
+PASS — Corfu child frame completion:
+  - Corfu popup candidates announced via VoiceOver            OK
+  - Selected candidate face detected (corfu-current)          OK
+  - Zoom tracks selected candidate in child frame
+    (direct UAZoomChangeFocus)                                OK
+  - No Emacs freeze (re-entrance guard before child frame
+    dispatch, buffer switch with unbind_to on all paths)      OK
+  - Focus restored to parent buffer after corfu closes
+    (childFrameCompletionActive flag + FOR_EACH_FRAME
+    visibility check + FocusedUIElementChanged)               OK
+  - Non-completion child frames skipped (10KB buffer limit)   OK
+  - specpdl_ref type used correctly (not ptrdiff_t)           OK