GTO-style frequencies

Toy polarized river math: minimum defense frequency, alpha (fold weight), and value-to-bluff combo ratios. These are geometry-based teaching helpers—not a full solver.

Minimum defense frequency also appears under Stacks & display for HUD workflows.

Export	Summary
alphaFrequency	1 - MDF = exploit weight if hero never defends.
bluffToValueRatio	Polarized river combo ratio.
valueToBluffRatio	Reciprocal; Infinity when bet is 0.
minimumDefenseFrequencyWithRake	MDF on post-rake pot geometry.
alphaFrequencyWithRake	1 − MDF with rake model.
bluffToValueRatioWithRake	Polarized bluff:value ratio with rake.
valueToBluffRatioWithRake	Reciprocal bluff:value with rake.