fix(data): 增加全局保存失败保护

apps/web/stores/useDevTaskStore.ts

@@ -4,6 +4,7 @@ import type { DevTask, DevTaskStatus } from '@/lib/dev-task';
 import { generateTaskNo, isLegacyTask } from '@/lib/dev-task';
 import { applyDevTaskTransition, normalizeDevTaskOnCreate } from '@/lib/dev-task-workflow';
 import { createEntityId, dedupeEntityIds } from '@/lib/entity-id';
+import { scheduleSaveWithOptimisticRollback } from '@/lib/optimistic-persistence';
 import { loadServerData, saveServerData, SERVER_DATA_CACHE_MS } from '@/lib/server-data';
 import {
   makeDevTaskBlockedActivity,
@@ -73,23 +74,40 @@ export const useDevTaskStore = create<DevTaskState>((set, get) => ({
     } as DevTask);
     const updated = [...list, task];
     set({ tasks: updated, loaded: true });
-    saveStored(updated);
+    scheduleSaveWithOptimisticRollback({
+      save: () => saveServerData('dev-tasks', updated),
+      expected: updated,
+      getCurrent: () => get().tasks,
+      rollback: () => set({ tasks: list, loaded: true }),
+    });
     useWorkActivityStore.getState().addActivity(makeDevTaskCreatedActivity(task, task.createdBy || task.assigneeId));
     return task;
   },
 
   updateTask: (id, data) => {
-    const updated = get().tasks.map((t) =>
+    const previous = get().tasks;
+    const updated = previous.map((t) =>
       t.id === id ? { ...t, ...data, aiDraft: false, updatedAt: new Date().toISOString() } : t,
     );
     set({ tasks: updated, loaded: true });
-    saveStored(updated);
+    scheduleSaveWithOptimisticRollback({
+      save: () => saveServerData('dev-tasks', updated),
+      expected: updated,
+      getCurrent: () => get().tasks,
+      rollback: () => set({ tasks: previous, loaded: true }),
+    });
   },
 
   deleteTask: (id) => {
-    const updated = get().tasks.filter((t) => t.id !== id);
+    const previous = get().tasks;
+    const updated = previous.filter((t) => t.id !== id);
     set({ tasks: updated, loaded: true });
-    saveStored(updated);
+    scheduleSaveWithOptimisticRollback({
+      save: () => saveServerData('dev-tasks', updated),
+      expected: updated,
+      getCurrent: () => get().tasks,
+      rollback: () => set({ tasks: previous, loaded: true }),
+    });
   },
 
   changeStatus: (id, to, opts) => {