Race difficulty choice was missing
What the user saw
The game could not store the selected race difficulty. A difficulty control could not update the game state or keep its choice after a reset.
Why it happened
The game store had no difficulty value or action for changing it.
What the real fix did
The store now starts at easy, accepts difficulty changes, and preserves the choice when the race state resets.
This issue is worth 3 points: the real fix changed 690 source lines. Models fixed it in 16 of 16 recorded runs.
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