patches: fix singleLineMove compile error - out-of-scope variables

oldLine and newLine were declared inside 'if (cachedText && oldPoint > 0)'
block but singleLineMove block referenced them from outside that scope.

Fix: declare singleLineMove = NO before the granularity detection block;
compute adjFwd/adjBwd inside the 'if (oldLine.location != newLine.location)'
branch where both variables are in scope.

patches/0007-ns-announce-overlay-completion-candidates-for-VoiceO.patch

@@ -1,4 +1,4 @@
-From b90379446166af5f851f6994aff68e242b8d2dca Mon Sep 17 00:00:00 2001
+From a264f3ec7acb0f736e79bd692bd79c11b0f16c2e Mon Sep 17 00:00:00 2001
 From: Daneel <daneel@sukany.cz>
 Date: Mon, 2 Mar 2026 18:39:46 +0100
 Subject: [PATCH 7/8] ns: announce overlay completion candidates for VoiceOver