While we made a loose flop call, we successfully realized our equity and extracted value once the straight arrived on the river.
This is a clear fold. We have no pair and no direct draws, making it impossible to continue profitably against a large 40% pot c-bet.
Note: Calling with high card and no draws is a significant error; we lack the equity to continue even in position.
Checking back is the most consistent play once we pick up an open-ended straight draw on this spade-heavy turn.
We hit our straight and must bet for value. CO's second check indicates a capped range that will likely bluff-catch with pairs or missed draws.