feat(KB-127): add Quick Entry box to ListView for rapid task creation

- Add QuickEntryBox component to ListView for inline task creation
- Wire up Quick Create functionality in App.tsx
- Add comprehensive tests for Quick Entry feature in ListView
- Remove legacy TaskDetailModal edit button and related styles
- Clean up unused store methods and update vitest configs

packages/dashboard/app/styles.css

@@ -3142,6 +3142,15 @@ body {
   gap: 6px;
 }
 
+.list-quick-entry {
+  flex-shrink: 0;
+}
+
+.list-quick-entry .quick-entry-box {
+  margin-bottom: 0;
+  padding: 4px 8px;
+}
+
 .list-column-dropdown {
   position: absolute;
   top: 100%;