fix: someday list delete buttons obscured by task items below

Raise z-index on the list header when delete confirmation is active
so Cancel/Delete buttons render above the task list items.

v1.57.10

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

package.json

@@ -1,6 +1,6 @@
 {
   "name": "my-weekly-todo-list",
-  "version": "1.57.9",
+  "version": "1.57.10",
   "description": "A web-based weekly task management application that organizes to-dos and calendar events in a single, intuitive weekly view",
   "main": "index.js",
   "scripts": {

src/components/WeeklyView.tsx

@@ -8009,6 +8009,7 @@ export default function WeeklyView() {
                                                         display: "flex",
                                                         justifyContent: "flex-start",
                                                         alignItems: "center",
+                                                        ...(listToDelete === list.id ? { position: "relative", zIndex: 10 } : {}),
                                                     }}
                                                 >
                                                     {listToDelete === list.id ? (