assets added css js

Asset/css/tweak-drag.css

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+/*
+ * TweakDrag -- board drag/touch and column-gap tweaks.
+ *
+ * The wider column gap is applied conditionally from Template/layout/variable.php (only
+ * when the "Widen the gap between columns" setting is on), using border-spacing with the
+ * --td-column-gap value, so it is not in this static stylesheet.
+ *
+ * Below: click-and-drag horizontal scrolling (added by Asset/js/drag-scroll.js when the
+ * "Drag the board background to scroll" setting is enabled). The .td-drag-scroll class is
+ * set on #board-container by the script, so these rules are inert when disabled. A grab
+ * cursor advertises the empty background; cards keep the normal cursor since pressing them
+ * does a card drag, not a pan.
+ */
+#board-container.td-drag-scroll {
+    cursor: grab;
+}
+
+#board-container.td-drag-scroll .task-board {
+    cursor: default;
+}
+
+.td-grabbing,
+.td-grabbing * {
+    cursor: grabbing !important;
+    user-select: none !important;
+}