fix(pl): sync stop dibang on arrange even when all unchecked.

Ensure cancel/block paths run when every generateDibang option is false.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/tests/test_pl_dibang_upsert_on_arrange.py

@@ -647,3 +647,13 @@ def test_arrange_transport_source_has_no_revoke_call():
 
     src = inspect.getsource(transport_api.arrange_transport)
     assert "revoke_regeneratable_dibang_for_transport" not in src
+
+
+def test_arrange_transport_syncs_stop_dibang_even_when_all_unchecked():
+    """全部取消勾选时仍应进入按段 sync，以便取消/已过磅阻断生效。"""
+    import inspect
+    from app.api.pl import transport as transport_api
+
+    src = inspect.getsource(transport_api.arrange_transport)
+    assert "bool(stop_dibang_options)" in src
+    assert "item.generate_dibang for item in stop_dibang_options" not in src