fix(admin): 修正日期滚动范围过小导致找不到今天的问题

上一版把扩天步长压到±3天且多选start锁死≥0,需要滚很多次才到目标日期.

调整:
- 单次滚动像素: 120px → 160px (约3~4张卡片)
- 初始范围: 单选 -10~+15天 / 多选 -3~+38天 (多选允许看过去3天以便对齐今日)
- 无限扩天步长: ±5天 (折衷); 扩天触发阈值 50px→100px,快到边缘就提前扩
- 多选去除 Math.max(0,start) 限制,允许往过去扩展

app/components/Admin/AdminDatePicker.vue

@@ -169,7 +169,7 @@ const emit = defineEmits(['update:modelValue', 'change'])
 const dateSelector = ref(null)
 const isFirstDateVisible = ref(false)
 const isLastDateVisible = ref(false)
-const dateRange = ref({ start: -8, end: 10 })
+const dateRange = ref({ start: -10, end: 15 })
 const showCalendar = ref(false)
 
 const pad = (n) => n.toString().padStart(2, '0')
@@ -248,7 +248,7 @@ const scrollToDateElement = (behavior = 'smooth') => {
 const handleWheel = (event) => {
   event.preventDefault()
   if (!dateSelector.value) return
-  const scrollAmount = 120
+  const scrollAmount = 160
   const currentScroll = dateSelector.value.scrollLeft
   dateSelector.value.scrollTo({
     left: event.deltaY > 0 ? currentScroll + scrollAmount : currentScroll - scrollAmount,
@@ -258,7 +258,7 @@ const handleWheel = (event) => {
 
 const scrollDates = (direction) => {
   if (!dateSelector.value) return
-  const scrollAmount = 120
+  const scrollAmount = 160
   const currentScroll = dateSelector.value.scrollLeft
   dateSelector.value.scrollTo({
     left: direction === 'right' ? currentScroll + scrollAmount : currentScroll - scrollAmount,
@@ -269,16 +269,16 @@ const scrollDates = (direction) => {
 const handleScroll = () => {
   if (!dateSelector.value) return
   const { scrollLeft, scrollWidth, clientWidth } = dateSelector.value
-  if (scrollLeft < 50) {
+  if (scrollLeft < 100) {
     const oldScrollWidth = scrollWidth
-    dateRange.value.start -= 3
+    dateRange.value.start -= 5
     nextTick(() => {
       const newScrollWidth = dateSelector.value.scrollWidth
       dateSelector.value.scrollLeft += newScrollWidth - oldScrollWidth
     })
   }
-  if (scrollWidth - scrollLeft - clientWidth < 50) {
-    dateRange.value.end += 3
+  if (scrollWidth - scrollLeft - clientWidth < 100) {
+    dateRange.value.end += 5
   }
 }
 
@@ -286,8 +286,8 @@ const scrollToToday = () => {
   const todayStr = formatDateStr(today)
   if (props.modelValue !== todayStr) selectDate(todayStr)
   if (dateRange.value.start > 0 || dateRange.value.end < 0) {
-    dateRange.value.start = -8
-    dateRange.value.end = 10
+    dateRange.value.start = -10
+    dateRange.value.end = 15
   }
   nextTick(() => scrollToDateElement('smooth'))
 }

app/components/Admin/AdminMultiDatePicker.vue

@@ -191,7 +191,7 @@ const emit = defineEmits(['update:modelValue', 'change'])
 const dateSelector = ref(null)
 const isFirstDateVisible = ref(false)
 const isLastDateVisible = ref(false)
-const dateRange = ref({ start: 0, end: 28 })
+const dateRange = ref({ start: -3, end: 38 })
 const showCalendar = ref(false)
 const lastClickedDate = ref('')
 
@@ -343,7 +343,7 @@ const applyBatchAction = (action) => {
 const handleWheel = (event) => {
   event.preventDefault()
   if (!dateSelector.value) return
-  const scrollAmount = 120
+  const scrollAmount = 160
   const currentScroll = dateSelector.value.scrollLeft
   dateSelector.value.scrollTo({
     left: event.deltaY > 0 ? currentScroll + scrollAmount : currentScroll - scrollAmount,
@@ -353,7 +353,7 @@ const handleWheel = (event) => {
 
 const scrollDates = (direction) => {
   if (!dateSelector.value) return
-  const scrollAmount = 120
+  const scrollAmount = 160
   const currentScroll = dateSelector.value.scrollLeft
   dateSelector.value.scrollTo({
     left: direction === 'right' ? currentScroll + scrollAmount : currentScroll - scrollAmount,
@@ -364,23 +364,23 @@ const scrollDates = (direction) => {
 const handleScroll = () => {
   if (!dateSelector.value) return
   const { scrollLeft, scrollWidth, clientWidth } = dateSelector.value
-  if (scrollLeft < 50 && dateRange.value.start > 0) {
+  if (scrollLeft < 100) {
     const oldScrollWidth = scrollWidth
-    dateRange.value.start = Math.max(0, dateRange.value.start - 3)
+    dateRange.value.start -= 5
     nextTick(() => {
       const newScrollWidth = dateSelector.value.scrollWidth
       dateSelector.value.scrollLeft += newScrollWidth - oldScrollWidth
     })
   }
-  if (scrollWidth - scrollLeft - clientWidth < 50) {
-    dateRange.value.end += 3
+  if (scrollWidth - scrollLeft - clientWidth < 100) {
+    dateRange.value.end += 5
   }
 }
 
 const scrollToToday = () => {
   if (dateRange.value.start > 0 || dateRange.value.end < 0) {
-    dateRange.value.start = 0
-    dateRange.value.end = 20
+    dateRange.value.start = -3
+    dateRange.value.end = 25
   }
   nextTick(() => {
     if (!dateSelector.value) return