risk: add kill-switch refresh retry policy and tests (#377)

tests/test_kill_switch.py

@@ -53,3 +53,52 @@ async def test_kill_switch_collects_step_errors() -> None:
 
     report = await ks.trigger(reason="test", cancel_pending_orders=_boom)
     assert any(err.startswith("cancel_pending_orders:") for err in report.errors)
+
+
+@pytest.mark.asyncio
+async def test_kill_switch_refresh_retries_then_succeeds() -> None:
+    ks = KillSwitchOrchestrator()
+    refresh_calls = {"count": 0}
+
+    def _flaky_refresh() -> None:
+        refresh_calls["count"] += 1
+        if refresh_calls["count"] < 3:
+            raise RuntimeError("temporary refresh failure")
+
+    report = await ks.trigger(
+        reason="test",
+        refresh_order_state=_flaky_refresh,
+        refresh_retry_attempts=3,
+        refresh_retry_base_delay_sec=0.0,
+    )
+    assert refresh_calls["count"] == 3
+    assert report.errors == []
+
+
+@pytest.mark.asyncio
+async def test_kill_switch_refresh_retry_exhausted_records_error_and_continues() -> None:
+    ks = KillSwitchOrchestrator()
+    calls: list[str] = []
+
+    def _refresh_fail() -> None:
+        raise RuntimeError("persistent refresh failure")
+
+    def _reduce() -> None:
+        calls.append("reduce")
+
+    def _snapshot() -> None:
+        calls.append("snapshot")
+
+    report = await ks.trigger(
+        reason="test",
+        refresh_order_state=_refresh_fail,
+        reduce_risk=_reduce,
+        snapshot_state=_snapshot,
+        refresh_retry_attempts=2,
+        refresh_retry_base_delay_sec=0.0,
+    )
+    assert any(
+        err.startswith("refresh_order_state: failed after 2 attempts")
+        for err in report.errors
+    )
+    assert calls == ["reduce", "snapshot"]