Allow a deficit in money to prepare money based stories

We plan to have more stories caused by having low money (eg: https://github.com/AcevedoR/outplant/pull/91),
for that we could benefit the engine allowing to have negative money.

It means changing the Win/Loose condition.

Maybe setting -200 money is the new loosing condition ?

The request targets the game engine’s money-based Win/Loose logic. Start by finding where the current money check triggers defeat and where low-money story events are evaluated, then adjust that path to allow negative balances and apply the agreed losing threshold. After the change, run any gameplay or gameflow tests/smoke checks covering money depletion and losing conditions to confirm behavior is correct.

Written by the indexing model from the issue text.