feat: support shared pet care tasks and smooth daily page return

pets-be/internal/httpapi/admin.go

@@ -360,7 +360,9 @@ func (a *API) adminTasks(c *gin.Context) {
 	ids, petIDs, taskIDs := []string{}, []string{}, []string{}
 	for _, t := range rows {
 		ids = append(ids, t.UserID)
-		petIDs = append(petIDs, t.PetID)
+		if t.PetID != nil {
+			petIDs = append(petIDs, *t.PetID)
+		}
 		taskIDs = append(taskIDs, t.ID)
 	}
 	names, err := a.userNames(ids)
@@ -388,7 +390,11 @@ func (a *API) adminTasks(c *gin.Context) {
 	}
 	items := make([]gin.H, 0, len(rows))
 	for _, t := range rows {
-		items = append(items, gin.H{"id": t.ID, "user_id": t.UserID, "user_name": names[t.UserID], "pet_id": t.PetID, "pet_name": petNames[t.PetID], "title": t.Title, "category": t.Category, "time_of_day": t.TimeOfDay, "repeat_rule": t.RepeatRule, "reminder_enabled": t.ReminderEnabled, "completed": done[t.ID], "created_at": t.CreatedAt})
+		petName := "全部宠物"
+		if t.PetID != nil {
+			petName = petNames[*t.PetID]
+		}
+		items = append(items, gin.H{"id": t.ID, "user_id": t.UserID, "user_name": names[t.UserID], "pet_id": t.PetID, "all_pets": t.PetID == nil, "pet_name": petName, "title": t.Title, "category": t.Category, "time_of_day": t.TimeOfDay, "repeat_rule": t.RepeatRule, "reminder_enabled": t.ReminderEnabled, "completed": done[t.ID], "created_at": t.CreatedAt})
 	}
 	page.Items = items
 	ok(c, page)