chore: fork from IRIS track 供 LICA 部门独立运行

- 复制来源: /home/yueli/track @ 192c8ee (feature/ai-audit-update)
- 组织隔离目标: LICA
- 端口规划: 前端 8030 / 后端 8031 / 数据库 8032
- 已排除 deploy.sh、deploy_full.sh、docker-compose.prod.yml（IRIS 生产发布脚本）
- 已排除工作区未提交改动，取干净的 192c8ee 状态

backend/app/services/__init__.py

@@ -0,0 +1,44 @@
+"""业务逻辑层"""
+from app.services.product_service import (
+    get_product_by_serial,
+    get_product,
+    create_product,
+    update_product,
+    update_overall_status,
+    get_all_products,
+)
+from app.services.task_service import (
+    get_task,
+    get_top_level_tasks,
+    create_task,
+    update_task,
+    complete_task,
+    receive_task,
+    reject_task,
+    transfer_task,
+    create_subtask,
+    add_task_record,
+    get_all_tasks,
+)
+
+__all__ = [
+    # Product
+    "get_product_by_serial",
+    "get_product",
+    "create_product",
+    "update_product",
+    "update_overall_status",
+    "get_all_products",
+    # Task
+    "get_task",
+    "get_top_level_tasks",
+    "create_task",
+    "update_task",
+    "complete_task",
+    "receive_task",
+    "reject_task",
+    "transfer_task",
+    "create_subtask",
+    "add_task_record",
+    "get_all_tasks",
+]