perf: streamline view data loading

frontend/src/style.test.ts

@@ -227,7 +227,7 @@ describe('mobile list row language', () => {
 
   it('provides a minimal archived-habit viewing path', () => {
     expect(mvpPanel).toContain("request('/habits?archived=true')")
-    expect(mvpPanel).toContain('已归档（{{ archivedHabits.length }}）')
+    expect(mvpPanel).toContain("{{ archivedHabitsLoaded ? `已归档（${archivedHabits.length}）` : '已归档' }}")
     expect(mvpPanel).toContain('v-for="h in archivedHabits"')
   })
 
@@ -319,14 +319,13 @@ describe('task and habit row decoration', () => {
     expect(css).toContain('.task-check:focus-visible{')
   })
 
-  it('refreshes the current task data after toggling completion', () => {
+  it('reconciles concurrent completion mutations without suppressing their feedback', () => {
     const toggleBlock = app.slice(app.indexOf('async function toggle(task: Task)'), app.indexOf('function isInteractiveTarget'))
     expect(toggleBlock).toContain('const completing = !task.completed')
-    expect(toggleBlock).toContain('await patchTask(task, { completed: completing })')
-    expect(toggleBlock).toContain('await loadTasksPage()')
-    expect(toggleBlock).toContain("if (activeView.value === 'today')")
-    expect(toggleBlock).toContain('await loadOverdueTasks()')
-    expect(toggleBlock).toContain('void loadTodayTaskSummary()')
+    expect(toggleBlock).toContain('await taskMutationReconciler.run(')
+    expect(toggleBlock).toContain("() => toast(completing ? '完成啦' : '已重新打开')")
+    expect(toggleBlock).toContain('applyTaskUpdate(task, updated)')
+    expect(toggleBlock).not.toContain("beginLatestRequest('tasks')")
   })
 
   it('shows the same visible round check control for boolean and numeric habits in both views', () => {
@@ -634,11 +633,10 @@ describe('unified floating add interaction', () => {
     expect(app).toContain('重复次数')
   })
 
-  it('preloads countdowns after authentication', () => {
+  it('preloads countdowns through the shared cache after authentication', () => {
     expect(app).toContain('void preloadCountdowns()')
-    expect(app).toContain("const active = await api('/countdowns')")
-    expect(app).toContain("const archived = await api('/countdowns?archived=true')")
-    expect(app).toContain('writeCountdownCache(active ?? [], archived ?? [])')
+    expect(app).toContain('await loadCountdownCache(async () =>')
+    expect(app).toContain("Promise.all([api('/countdowns'), api('/countdowns?archived=true')])")
   })
 
   it('reuses one draggable FAB component for task, habit, and countdown views', () => {