Clean up dead code, typos, and minor style issues

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/views/Files/FilesPage.vue

@@ -824,7 +824,7 @@ function download(type, id, source, name) {
  */
 function primaryDragDelete() {
   compareData.value.unshift(primaryDragData.value[0]);
-  primaryDragData.value.length = 0;
+  primaryDragData.value = [];
 }
 
 /**
@@ -832,7 +832,7 @@ function primaryDragDelete() {
  */
 function secondaryDragDelete() {
   compareData.value.unshift(secondaryDragData.value[0]);
-  secondaryDragData.value.length = 0;
+  secondaryDragData.value = [];
 }
 
 /**