将persist和后端分离，方便替换为其他数据库

tests/integration/test_full_pipeline_multinode_mock.py

@@ -11,6 +11,7 @@ import pytest_asyncio
 from sync_state_machine.common.binding import BindingManager
 from sync_state_machine.common.collection import DataCollection
 from sync_state_machine.common.persistence import PersistenceBackend
+from sync_state_machine.common.sqlite_backend import SQLitePersistenceBackend
 from sync_state_machine.common.types import BindingStatus, SyncAction, SyncStatus
 from sync_state_machine.pipeline.full_sync_pipeline import FullSyncPipeline
 from sync_state_machine.sync_system.strategy_ops.compare_ops import (
@@ -39,7 +40,7 @@ async def pipeline_bundle():
     register_test_domain()
 
     db = Path(tempfile.mkdtemp(prefix="sync_state_machine_pipeline_") ) / "state.db"
-    persistence = PersistenceBackend(str(db))
+    persistence = SQLitePersistenceBackend(str(db))
     await persistence.initialize()
 
     local_collection = DataCollection("local", persistence=persistence, auto_persist=False)
@@ -304,7 +305,7 @@ async def test_load_overrides_bind_data_id_from_bindings(pipeline_bundle):
 
     existing_persistence = local_collection.persistence
     assert existing_persistence is not None
-    persistence = PersistenceBackend(existing_persistence.db_path)
+    persistence = SQLitePersistenceBackend(existing_persistence.db_path)
     await persistence.initialize()
 
     await persistence.conn.execute(
@@ -443,7 +444,7 @@ async def test_pipeline_create_then_update_completes_in_single_run_with_reload()
     register_test_domain()
 
     db = Path(tempfile.mkdtemp(prefix="sync_state_machine_pipeline_reload_") ) / "state.db"
-    persistence = PersistenceBackend(str(db))
+    persistence = SQLitePersistenceBackend(str(db))
     await persistence.initialize()
 
     local_collection = DataCollection("local", persistence=persistence, auto_persist=False)