✅ Get unit by id

Category	Ability
Status	Passing
Test	tests/test_data_loader.py::test_get_unit_by_id

PRECONDITIONS:

Preconditions

• UNITS data loaded

Action

• Call get_unit("001").

Expected Postconditions

• Returns UnitData with name="Duban".

• hp == 6, pwr == 3.

Assertions

assert unit.name == "Duban"
    assert unit.hp == 6
    assert unit.pwr == 3