refactor(V0.2): 拖动交互收紧 —— 仅把手触发 / 缩小把手 / 去多余元素 / 打卡跨组

- 打卡与列表: 去掉卡片整体长按拖动路径, 只有 ⠿ 把手可拖; 把手缩小
- 列表行去掉跟动的蓝色目标列徽标 (drag-pill), 占位/克隆浮层承担全部反馈
- 打卡支持跨组拖动: 落到其他周期组的目标卡 = 改周期 + 落位一次完成
  (updateHabit period + reorder), 组内排序不变
- 看板: 去掉 ⠿ 把手, 恢复长按拖动

src/pages/checkin/MergedView.jsx

@@ -100,18 +100,28 @@ export default function MergedView({ date, onDateChange }) {
 
   const drag = useHabitDrag({ onDrop: reorderHabit })
 
-  // 组内拖动落位: 重排后按渲染分组顺序整体展平重写 sortOrder
-  async function reorderHabit(dragged, targetId, after) {
+  // 拖动落位: 组内排序; 落到其他周期组 = 同时改周期并落位。
+  // 重排后按渲染分组顺序整体展平重写 sortOrder。
+  async function reorderHabit(dragged, targetId, after, targetPeriod) {
     const snapshot = detail
-    const g = groups.find((x) => x.key === (GROUP_ORDER.includes(dragged.period) ? dragged.period : 'other'))
+    const g = groups.find((x) => x.items.some((i) => i.id === targetId))
     if (!g) return
+    const target = g.items.find((i) => i.id === targetId)
     const rest = g.items.filter((i) => i.id !== dragged.id)
     const ti = rest.findIndex((i) => i.id === targetId)
     if (ti < 0) return
-    rest.splice(after ? ti + 1 : ti, 0, dragged)
-    const flat = groups.map((x) => (x.key === g.key ? rest : x.items)).flat()
+    const crossed = targetPeriod && targetPeriod !== dragged.period
+    const moved = crossed
+      ? { ...dragged, period: targetPeriod, periodLabel: GROUP_LABEL[targetPeriod] || target.periodLabel }
+      : dragged
+    rest.splice(after ? ti + 1 : ti, 0, moved)
+    // 展平时把拖动项从原组剔除 (跨组场景原组可能仍包含它)
+    const flat = groups
+      .map((x) => (x.key === g.key ? rest : x.items.filter((i) => i.id !== dragged.id)))
+      .flat()
     setDetail((d) => ({ ...d, items: flat.map((it, i) => ({ ...it, sortOrder: i })) }))
     try {
+      if (crossed) await checkinApi.updateHabit(dragged.id, { period: targetPeriod })
       await checkinApi.reorderHabits(flat.map((i) => i.id))
     } catch (e) {
       setDetail(snapshot)
@@ -324,7 +334,6 @@ export default function MergedView({ date, onDateChange }) {
                   + (drag.dragItem?.id === item.id ? ' dragging' : '')
                   + (drag.over?.id === item.id ? ` dragover ${drag.over.after ? 'after' : 'before'}` : '')
                 }
-                {...drag.bind(item)}
               >
                 <span className="grip" title="拖动排序" {...drag.bindHandle(item)}>⠿</span>
                 <RingProgress

src/pages/task/BoardView.jsx

@@ -40,7 +40,6 @@ export default function BoardView({
                   task={t}
                   dragging={drag.dragTask?.id === t.id}
                   bindDrag={drag.bind}
-                  bindDragHandle={drag.bindHandle}
                   onClick={() => { if (!drag.dragTask && !drag.justEnded()) onOpen?.(t) }}
                   onToggleSub={onToggleSub}
                   onToggle={onToggle}

src/pages/task/ListView.jsx

@@ -52,9 +52,8 @@ export default function ListView({
                   onToggle={onToggle}
                   onClick={() => { if (!drag.justEnded()) onOpen(t) }}
                   onMore={onMore}
-                  bindDrag={drag.bind}
                   bindDragHandle={drag.bindHandle}
-                  dragTarget={dragging ? orderedCols[dragging.toIdx] : null}
+                  dragging={!!dragging}
                   dragOver={drag.over?.id === t.id ? drag.over : null}
                 />
                 {kids.length > 0 && (