fix(frontend): require 1s press-and-hold to drag tasks on mobile (#1987)

## Summary
- Adds a 1-second press-and-hold delay before drag mode activates on
touch devices
- Allows users to tap tasks to open them on mobile without accidentally
triggering drag mode
- Only affects touch devices (desktop behavior unchanged via
`delayOnTouchOnly`)

Fixes #1986

frontend/src/components/project/views/ProjectKanban.vue

@@ -338,7 +338,7 @@ const DRAG_OPTIONS = {
 	ghostClass: 'ghost',
 	dragClass: 'task-dragging',
 	delayOnTouchOnly: true,
-	delay: 150,
+	delay: 1000,
 } as const
 
 const MIN_SCROLL_HEIGHT_PERCENT = 0.25

frontend/src/components/project/views/ProjectList.vue

@@ -60,6 +60,8 @@
 							type: 'transition-group'
 						}"
 						:animation="100"
+						:delay-on-touch-only="true"
+						:delay="1000"
 						ghost-class="task-ghost"
 						@start="handleDragStart"
 						@end="saveTaskPosition"