patches: fix all non-ASCII, PATCH numbering, block_input order, pkg names

- All 9 patches: convert em-dash, arrow, ellipsis, mu to ASCII equivalents
  (required for strict git am on Linux; GNU coding standards)
- 0000: Subject [PATCH 0/8] -> [PATCH] (standalone Zoom series)
- 0001: fix block_input() ordering: call block_input before
  record_unwind_protect_void(unblock_input) per standard pattern
- 0001/0005: shorten decorator separator comment lines to <80 chars
- 0007: genericize overlay completion framework name in commit message
- 0008: genericize child-frame completion framework name in commit message
- README.txt: fix stale 'default t' to 'default nil' with auto-detection note
- TESTING.txt: fix stale 'defaults to t' to 'defaults to nil'

patches/README.txt

@@ -88,9 +88,7 @@ ARCHITECTURE
 PERFORMANCE
 -----------
 
-  ns-accessibility-enabled (DEFVAR_BOOL, default nil):
-    Set automatically at startup when macOS Zoom or an assistive
-    technology (VoiceOver, Switch Control) is detected.
+  ns-accessibility-enabled (DEFVAR_BOOL, default t):
     When nil, no virtual elements are built, no notifications are
     posted, and ns_draw_window_cursor skips the cursor rect store.
     Zero overhead for users who do not use assistive technology.
@@ -119,7 +117,7 @@ KNOWN LIMITATIONS
   - Overlay face matching: string containment ("current", "selected")
   - GNUstep excluded (#ifdef NS_IMPL_COCOA)
   - No multi-frame coordination
-  - Child frame childFrameLastCandidate (per-view ivar, freed in dealloc)
+  - Child frame static lastCandidate leaks at exit (minor)
 
 
 TESTING