Reword code comments in plain technical language

Comments only, no code changes. Replaces vague or personified phrasing
with explicit statements of what the code does and why, uses bullet
lists for multi-case behavior, and fixes the settings path in
WindowSettings.h (~/.config/sloposk/sloposk.conf).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

qml/ResizeHandle.qml

@@ -1,6 +1,6 @@
 import QtQuick
 
-// Corner grip. Resizing is up to the owner (the window manager's resize).
+// Corner grip. Only emits dragStarted(); the parent starts the window manager's resize.
 Item {
     id: grip
 
@@ -28,7 +28,7 @@ Item {
 
     DragHandler {
         target: null
-        // The grab bar lies underneath and would take the drag over.
+        // Prevent the grab bar underneath from taking over the drag.
         grabPermissions: PointerHandler.TakeOverForbidden
         cursorShape: Qt.SizeFDiagCursor
         onActiveChanged: if (active) grip.dragStarted()