Marketplace window, memorize the value entered by the player when the player changes the starting and destination resources

[LeHerosInconnu]

Preliminary checks

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Describe the problem requiring a solution

I suggest to memorize the value entered by the player when the player changes the starting and destination resources.
If a resource is not sufficient to obtain the requested value, the maximum possible value is proposed.

In fheroes2:

2025-01-11.14-22-26.mp4

Describe the possible solution

I suggest to memorize the value entered by the player when the player changes the starting and destination resources.
If a resource is not sufficient to obtain the requested value, the maximum possible value is proposed.

Additional info

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