ScenarioFactory + CWM + Engine changes:
1. Scenario.venue field (default='bingx') — each scenario tagged with venue
2. ScenarioFactory.exchange_id parameter — controls which exchange scenarios simulate
3. _make_state + _behavior_state: venue propagated to VenueRules.exchange
4. All 34 scenario builders: venue=self.exchange_id
5. cross_exchange_transfer(): re-tag scenarios for different exchange
(strategy evolved on BingX can be re-evaluated on Binance)
6. CWM core.py: is_maker check updated for three-dimensional order model
(POST_ONLY no longer in OrderType; uses post_only flag instead)
Cross-exchange learning flow:
factory_bingx = ScenarioFactory(exchange_id='bingx')
scenarios_bingx = factory_bingx.build_suite(symbols=[...])
strategy = train(scenarios_bingx) # evolve on BingX
factory_binance = ScenarioFactory(exchange_id='binance')
scenarios_binance = factory_bingx.cross_exchange_transfer(
scenarios_bingx, target_exchange='binance')
score = evaluate(strategy, scenarios_binance) # test on Binance
All tests pass. Strategy PARAMETERS transfer; only venue tag + fees + order mapping change.
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