[PARTIALLY FIXED] Pocgen sometimes doesn't understand the `forge-std` API

[IliaMManolov]

Example:

Error (6160): Wrong argument count for function call: 1 arguments given but expected 0.
   --> contracts/test/Insufficient_validation_on_user_inputs_test.t.sol:101:13:
    |
101 |             fail("Loan creation with excessive duration did not revert as expected. Input validation insufficient.");

Another example:

vm.expectRevert(stdError.arithmeticError); // Expect arithmetic underflow error (panic 0x11)

We should probably give it examples of how to use common forge testing functionality.

[Miyamura80]

I think this is addressed now with foundry.md. Ok to close issue?

https://github.com/GatlingX/Archimedes_Prototype/blob/main/hackbot/resources/system_prompts/docs/foundry.md