fix: harden today progress summary

frontend/src/App.vue

@@ -174,7 +174,7 @@ async function submitTaskCompose() {
       tasks.value.push(task)
       totalTasks.value = nextTotalAfterLocalTaskAdd(totalTasks.value)
     }
-    if (activeView.value === 'today') await loadTodayTaskSummary()
+    if (activeView.value === 'today') void loadTodayTaskSummary()
     taskComposeOpen.value = false
     toast('任务已添加')
   } catch (reason) { fail(reason) }
@@ -229,7 +229,7 @@ const progressWidth = (completed: number, total: number) => `${total > 0 ? Math.
 const todayTaskProgressPercent = computed(() => progressWidth(todayTaskCompleted.value, todayTaskTotal.value))
 const todayHabitProgressPercent = computed(() => progressWidth(todayHabitCompleted.value, todayHabitTotal.value))
 const todayTaskProgressHint = computed(() => todayTaskTotal.value ? `还剩 ${todayOpenTasks.value} 件` : '今天暂无任务')
-const todayHabitProgressHint = computed(() => todayHabitTotal.value ? `还差 ${Math.max(todayHabitTotal.value - todayHabitCompleted.value, 0)} 次` : '今天暂无习惯')
+const todayHabitProgressHint = computed(() => todayHabitTotal.value ? `还有 ${Math.max(todayHabitTotal.value - todayHabitCompleted.value, 0)} 项未完成` : '今天暂无习惯')
 function scrollTodaySection(id: 'today-tasks' | 'today-habits') {
   document.getElementById(id)?.scrollIntoView({ behavior: 'smooth', block: 'start' })
 }
@@ -368,18 +368,20 @@ function isoAtLocalDayOffset(offset: number) {
 }
 async function loadTodayTaskSummary() {
   const token = ++todaySummaryLoadToken
-  const summaryTotal = async (completed: boolean) => {
-    const params = new URLSearchParams({ page: '1', page_size: '1' })
-    params.set('due_from', isoAtLocalDayOffset(0))
-    params.set('due_to', isoAtLocalDayOffset(1))
-    params.set('completed', String(completed))
-    const data = await api(`/tasks?${params}`)
-    return Number(data.total ?? data.items?.length ?? 0)
-  }
-  const [open, completed] = await Promise.all([summaryTotal(false), summaryTotal(true)])
-  if (token !== todaySummaryLoadToken || activeView.value !== 'today') return
-  todayTaskCompleted.value = completed
-  todayTaskTotal.value = open + completed
+  try {
+    const summaryTotal = async (completed: boolean) => {
+      const params = new URLSearchParams({ page: '1', page_size: '1' })
+      params.set('due_from', isoAtLocalDayOffset(0))
+      params.set('due_to', isoAtLocalDayOffset(1))
+      params.set('completed', String(completed))
+      const data = await api(`/tasks?${params}`)
+      return Number(data.total ?? data.items?.length ?? 0)
+    }
+    const [open, completed] = await Promise.all([summaryTotal(false), summaryTotal(true)])
+    if (token !== todaySummaryLoadToken || activeView.value !== 'today') return
+    todayTaskCompleted.value = completed
+    todayTaskTotal.value = open + completed
+  } catch { /* 概览统计失败不阻断今天页 */ }
 }
 async function loadOverdueTasks() {
   const params = new URLSearchParams()
@@ -422,8 +424,10 @@ async function loadAll() {
   try {
     if (!navigationLoaded.value) await loadNavigation()
     await loadTasksPage()
-    if (activeView.value === 'today') await Promise.all([loadOverdueTasks(), loadTodayTaskSummary()])
-    else overdueTasks.value = []
+    if (activeView.value === 'today') {
+      await loadOverdueTasks()
+      void loadTodayTaskSummary()
+    } else overdueTasks.value = []
     if (page.value > totalPages.value) { page.value = totalPages.value; await loadTasksPage() }
   } catch (reason) { fail(reason) } finally { loading.value = false }
 }
@@ -469,7 +473,7 @@ async function patchTask(task: Task, patch: Partial<Task>) {
 async function toggle(task: Task) {
   try {
     await patchTask(task, { completed: !task.completed })
-    if (activeView.value === 'today') await loadTodayTaskSummary()
+    if (activeView.value === 'today') void loadTodayTaskSummary()
     toast(task.completed ? '已重新打开' : '完成啦')
   } catch (reason) { fail(reason) }
 }
@@ -642,7 +646,7 @@ async function saveTask() {
       }
     }
     if (selectedTask.value) selectedTask.value = { ...selectedTask.value, ...updated }
-    if (activeView.value === 'today') await loadTodayTaskSummary()
+    if (activeView.value === 'today') void loadTodayTaskSummary()
     toast('已保存')
   } catch (reason) { fail(reason) }
 }
@@ -653,7 +657,7 @@ async function removeTask(task: Task) {
     tasks.value = tasks.value.filter((item) => item.id !== task.id && item.parent_id !== task.id)
     selectedTask.value = null
     mobileDetail.value = false
-    if (activeView.value === 'today') await loadTodayTaskSummary()
+    if (activeView.value === 'today') void loadTodayTaskSummary()
     toast('已移到回收站')
   } catch (reason) { fail(reason) }
 }
@@ -776,13 +780,13 @@ onMounted(bootstrap)
       <CountdownPanel ref="countdownComposer" v-else-if="activeView==='countdowns'" @notice="toast" />
       <template v-else>
         <section v-if="activeView==='today'" class="today-board" aria-label="今日进度">
-          <button class="today-track today-task-track" type="button" @click="scrollTodaySection('today-tasks')">
+          <button class="today-track today-task-track" type="button" aria-controls="today-tasks" @click="scrollTodaySection('today-tasks')">
             <span class="today-track-head"><strong>任务 {{ todayTaskCompleted }} / {{ todayTaskTotal }}</strong><small>{{ todayTaskProgressHint }}</small></span>
-            <span class="today-track-rail" aria-hidden="true"><i class="today-track-fill" :style="{ width: todayTaskProgressPercent }" /></span>
+            <span class="today-track-rail" role="progressbar" aria-label="今日任务进度" aria-valuemin="0" :aria-valuemax="todayTaskTotal" :aria-valuenow="todayTaskCompleted"><i class="today-track-fill" :style="{ width: todayTaskProgressPercent }" /></span>
           </button>
-          <button class="today-track today-habit-track" type="button" @click="scrollTodaySection('today-habits')">
+          <button class="today-track today-habit-track" type="button" aria-controls="today-habits" @click="scrollTodaySection('today-habits')">
             <span class="today-track-head"><strong>习惯 {{ todayHabitProgress }}</strong><small>{{ todayHabitProgressHint }}</small></span>
-            <span class="today-track-rail" aria-hidden="true"><i class="today-track-fill" :style="{ width: todayHabitProgressPercent }" /></span>
+            <span class="today-track-rail" role="progressbar" aria-label="今日习惯进度" aria-valuemin="0" :aria-valuemax="todayHabitTotal" :aria-valuenow="todayHabitCompleted"><i class="today-track-fill" :style="{ width: todayHabitProgressPercent }" /></span>
           </button>
         </section>
         <template v-if="activeView==='today'">