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sync_state_machine/domain/construction/sync_strategy.py

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+from ...sync_system.strategy import DefaultSyncStrategy
+from ...sync_system.config import StrategyConfig, OrphanAction, UpdateDirection
+from schemas.construction.construction import ConstructionResponse
+
+
+class ConstructionTaskSyncStrategy(DefaultSyncStrategy[ConstructionResponse]):
+    """
+    Construction Task 同步策略（合同子业务）。
+    """
+
+    schema = ConstructionResponse
+
+    default_config = StrategyConfig(
+        auto_bind=True,
+        auto_bind_fields=["contract_id", "task_type"],
+        depend_fields={"contract_id": "contract", "project_id": "project"},
+        local_orphan_action=OrphanAction.CREATE_REMOTE,
+        remote_orphan_action=OrphanAction.NONE,
+        update_direction=UpdateDirection.PUSH,
+    )