workflow.run_spread_payoff

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Payoff, breakeven(s), and max profit/loss for a Deribit BTC/ETH vertical spread (2 legs, same option type, opposite direction, e.g. a bull call spread) or an iron condor/butterfly (4 legs: 2 calls + 2 puts) at a scenario price. Coin-settled, and the max profit/loss are genuinely NOT the flat, textbook USD-settled values: because each leg's own payoff is divided by the settlement price, (1) a debit vertical spread's peak payoff occurs exactly at its short strike, not "anywhere beyond it" - and its profit is a finite WINDOW that closes again at a high enough price, decaying back toward a full loss of the premium paid, and (2) an iron condor/butterfly's max loss is genuinely UNBOUNDED toward price->0 (maxLossCoin: null) if it has a put wing, unlike the "capped at wing width" USD-settled result - only the call side is actually bounded. Use when user asks about a bull/bear call/put spread, vertical spread, iron condor, or iron butterfly, e.g. "what's my max loss on this BTC call spread?" or "where do my iron condor breakevens sit?". Returns: structureType (vertical_spread/iron_condor/iron_butterfly, inferred from the legs given), netDebitCoin (negative = credit received), scenarioPayoffCoin, scenarioPnlCoin/Usd, breakevenPrices (0-3, ascending), maxLossCoin/maxProfitCoin (null = unbounded), isProfitable.