HEL-282: 写库路径事务提交与审计留痕自查修复

同类未提交即 close 回滚、业务与审计拆成两笔事务的路径一并收进可嵌套事务边界。

Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: multica-agent <github@multica.ai>

tests/test_master_data.py

@@ -210,6 +210,40 @@ class MasterDataUnitTests(unittest.TestCase):
         )
 
 
+class MasterDataCommitTests(unittest.TestCase):
+    """File-database checks that business rows and audit share one commit."""
+
+    def setUp(self) -> None:
+        self.temp_dir = tempfile.TemporaryDirectory()
+        self.addCleanup(self.temp_dir.cleanup)
+        self.db_path = Path(self.temp_dir.name) / "app.db"
+        self.connection = connect(self.db_path)
+        self.addCleanup(self.connection.close)
+        migrate(self.connection)
+
+    def test_create_company_and_audit_survive_connection_close(self) -> None:
+        company_id = master_data.create_company(
+            self.connection, "丁公司", None, None, actor=None
+        )
+        self.connection.close()
+        fresh = connect(self.db_path)
+        try:
+            company = fresh.execute(
+                "SELECT name FROM companies WHERE id = ?", (company_id,)
+            ).fetchone()
+            change = fresh.execute(
+                """
+                SELECT action, entity_id FROM master_data_changes
+                WHERE entity_type = 'company'
+                """
+            ).fetchone()
+        finally:
+            fresh.close()
+        self.assertEqual("丁公司", company["name"])
+        self.assertEqual("create", change["action"])
+        self.assertEqual(company_id, change["entity_id"])
+
+
 class MasterDataApiTests(unittest.TestCase):
     """Live-server workflow tests for account registration and review."""