patches: reduce completion tracking rate-limit from 500ms to 50ms

500ms (2 Hz) was too aggressive — Zoom focus stopped updating during
keyboard navigation in Vertico/Corfu lists.  50ms (20 Hz) tracks
fast arrow-key navigation while still avoiding per-frame overhead.
UAZoomEnabled() is already cached so the main cost is the overlay
scan, which is cheap.

patches/0004-ns-add-interactive-span-elements-for-Tab-navigation.patch

@@ -1,4 +1,4 @@
-From deb9e1e6d759b387246a71061194716505920684 Mon Sep 17 00:00:00 2001
+From 19053ea6ef478603115e2f4288f54d44ce204bcd Mon Sep 17 00:00:00 2001
 From: Martin Sukany <martin@sukany.cz>
 Date: Sat, 28 Feb 2026 12:58:11 +0100
 Subject: [PATCH 5/9] ns: add interactive span elements for Tab navigation
@@ -17,10 +17,10 @@ Tested on macOS 14.  Verified: Tab-cycling through org-mode links,
  1 file changed, 286 insertions(+)
 
 diff --git a/src/nsterm.m b/src/nsterm.m
-index e818817..d2a5a58 100644
+index ecc8c54..5eaf480 100644
 --- a/src/nsterm.m
 +++ b/src/nsterm.m
-@@ -9265,6 +9265,292 @@ - (NSRect)accessibilityFrame
+@@ -9266,6 +9266,292 @@ - (NSRect)accessibilityFrame
  
  @end