refactor(mock): remove lib/mock fixtures and empty stores

store/orders.ts

@@ -8,7 +8,6 @@ import { allow, deny } from "@/lib/decision"
 import { evaluateOrderTransition, type OrderAction } from "@/lib/domain/order-machine"
 import type { ApiDecision } from "@/lib/errors"
 import { generateId } from "@/lib/id"
-import { mockOrders } from "@/lib/mock"
 import type { Order, OrderStatus } from "@/lib/types"
 import { useAuthStore } from "@/store/auth"
 import { useChatStore } from "@/store/chat"
@@ -301,7 +300,7 @@ export const useOrderStore = create<OrderState>((set, get) => {
   }
 
   return {
-    orders: mockOrders,
+    orders: [],
     createOrder: (input, actor) => {
       if (actor.role !== "consumer") {
         return { decision: deny(403, "仅客户可下单") }