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_period_close.py

@@ -189,6 +189,42 @@ class PeriodCloseTests(LedgerBase):
         self.assertEqual(1, versions[0]["version"])
         self.assertEqual(2, versions[-1]["version"])
 
+    def test_close_and_reopen_request_survive_connection_close(self) -> None:
+        """HEL-282: monthly close / reopen request must persist with audit."""
+        from bank_importer.db import connect as db_connect
+
+        self._cover_month()
+        closed = self._close()
+        req = period_close.request_reopen(
+            self.connection, self.MONTH, self.admin,
+            reason="补录金牛煤业七月运输费并核对金额",
+        )
+        report_no = closed["report_no"]
+        request_id = req["id"]
+        self.connection.close()
+        fresh = db_connect(self.db_path)
+        try:
+            run = fresh.execute(
+                "SELECT status, report_no FROM period_close_runs WHERE year_month = ?",
+                (self.MONTH,),
+            ).fetchone()
+            reopen = fresh.execute(
+                "SELECT status FROM period_reopen_requests WHERE id = ?",
+                (request_id,),
+            ).fetchone()
+            actions = {
+                row["action"]
+                for row in fresh.execute(
+                    "SELECT action FROM period_audit_events"
+                ).fetchall()
+            }
+        finally:
+            fresh.close()
+        self.assertEqual("closed", run["status"])
+        self.assertEqual(report_no, run["report_no"])
+        self.assertEqual("pending", reopen["status"])
+        self.assertTrue({"close_execute", "reopen_request"} <= actions)
+
     def test_wal_on_file_database(self) -> None:
         mode = self.connection.execute("PRAGMA journal_mode").fetchone()[0]
         self.assertEqual("wal", str(mode).lower())