feat: 产品接口暴露lifecycle_phase并做阶段感知状态校验

backend/app/schemas/product.py

@@ -54,6 +54,8 @@ class ProductResponse(BaseModel):
     macro_status: str | None = None  # 🔧 后端预计算的任务树状态（免前端逐条展开）
     overall_status: str | None = None
     status: str
+    # 🔧 生命周期阶段：PRODUCTION(生产制造/发货测试) | AFTER_SALES(出库后返厂售后维修)
+    lifecycle_phase: str = "PRODUCTION"
     created_at: datetime
     # 🔧 最新动态 — 该产品活跃任务的最新记录
     latest_record_time: datetime | None = None
@@ -86,6 +88,8 @@ class ProductScanResponse(BaseModel):
     current_location_id: str | None = None
     overall_status: str | None = None
     status: str
+    # 🔧 生命周期阶段：PRODUCTION(生产制造/发货测试) | AFTER_SALES(出库后返厂售后维修)
+    lifecycle_phase: str = "PRODUCTION"
     created_at: datetime
     top_level_tasks: list[TaskSummaryResponse] = []
     task_tree: list[TaskResponse] = []