test(rush): 锁定试排世界急单重排走柔性引擎的回归用例

夹具还原「文件夹快试导入」世界形态（主干种子 + trialOnly + 最小柔性
主数据/班组），断言：急单桥接进 flexOrders（SALES/RELEASED）、生成 FV
草稿版本、急单真实排出虚拟产线、主轨不再新增空壳版本。
已做反向验证：临时禁用 is_trial_world 分支该用例必失败。

tests/golden/test_rush.py

@@ -109,3 +109,85 @@ def test_rush_evaluate_existing_order():
     assert not target.get("isRush")  # 主干未改
     assert impact["baseline"]["orderCount"] == 7
     assert impact["after"]["orderCount"] == 7
+
+
+def _trial_flex_world() -> dict:
+    """试排世界夹具：主干种子数据 + planningContext.trialOnly + 最小柔性主数据。
+
+    模拟「文件夹快试导入」后的真实形态：排产只认 flex* 主数据，
+    主干 RULE 引擎在此类世界上只能产出 0 工单的空壳版本。
+    """
+    world = seed_world()
+    world["planningContext"] = {"trialOnly": True, "dataDate": "2026-08-04"}
+    world["flexOperations"] = [{"id": 1, "code": "CUT", "name": "下料", "changeoverMin": 10}]
+    world["flexTeams"] = [{
+        "id": 1, "code": "TEAM-CUT", "name": "下料班", "memberCount": 4,
+        "supportOps": ["CUT"],
+    }]
+    world["flexRoutings"] = [{
+        "id": 1, "productCode": "CTRL-A", "productName": "控制柜 A", "seq": 1,
+        "operationCode": "CUT", "operationName": "下料", "stdTimePerUnit": 5.0,
+    }]
+    world["flexMaterials"] = [{
+        "id": 1, "code": "CTRL-A", "name": "控制柜 A", "type": "FINISHED_PRODUCT",
+        "unit": "件", "stock": 0, "inTransit": 0, "safetyStock": 0,
+        "procurementLeadTime": 0, "sourcingType": "MAKE",
+    }]
+    world["flexEquipment"] = [{
+        "id": 1, "code": "EQ-1", "name": "切割机", "status": "RUNNING",
+        "capabilities": ["CUT"], "availabilityRate": 1.0,
+    }]
+    return world
+
+
+def test_rush_apply_in_trial_world_routes_to_flex_engine():
+    """试排世界采用急单必须走柔性引擎（回归：急单入池却排不进/看不见）。
+
+    锁定三点：急单桥接进 flexOrders（source=SALES/RELEASED）；生成 FV 柔性
+    草稿版本且急单真实排出虚拟产线；主轨 scheduleVersions 不再新增空壳版本。
+    """
+    world = _trial_flex_world()
+    n_trunk_versions = len(world["scheduleVersions"])
+    n_flex_versions = len(world.get("flexScheduleVersions") or [])
+
+    applied = apply_rush(world, _next_id_factory(world), {
+        "payload": {
+            "customerName": "试排急单客户",
+            "customerLevel": "VIP",
+            "productCode": "CTRL-A",
+            "quantity": 3,
+            "deliveryDate": fmt_date(add_minutes(today0(), 5 * 24 * 60)),
+            "priority": 1,
+        },
+        "strategy": "DELIVERY_FIRST",
+    })
+    order = applied["order"]
+    result = applied["result"]
+
+    assert order["isRush"] is True
+    assert order["status"] == "APPROVED"
+
+    # 急单已桥接进柔性订单池
+    flex_row = next(
+        (o for o in world["flexOrders"] if o.get("orderNo") == order["orderNo"]),
+        None,
+    )
+    assert flex_row is not None, "急单未桥接进 flexOrders，柔性排产必然看不到它"
+    assert flex_row["source"] == "SALES"
+    assert flex_row["status"] == "RELEASED"
+    assert flex_row["isRush"] is True
+
+    # 生成的是柔性 FV 草稿版本，而不是主轨 RULE 空壳版本
+    assert str(result.versionNo).startswith("FV")
+    assert len(world["scheduleVersions"]) == n_trunk_versions, "主轨不应新增空壳版本"
+    assert len(world["flexScheduleVersions"]) == n_flex_versions + 1
+    assert world["flexScheduleVersions"][-1]["versionNo"] == result.versionNo
+    assert result.orderCount == len(world["flexOrders"])
+
+    # 急单真实排出虚拟产线（修复前在此类世界为 0 工单）
+    rush_vls = [
+        v for v in world["flexVirtualLines"]
+        if v.get("orderNo") == order["orderNo"]
+        and v.get("versionId") == world["flexScheduleVersions"][-1]["id"]
+    ]
+    assert rush_vls, "急单在柔性版本中应有至少一条虚拟产线"