"""Plain-Gymnasium ad-creative environment — a single-step CONTEXTUAL BANDIT.

The agent reads a persona feature vector, picks a creative brief from fixed menus, and is graded
against a rule-derived answer key. One action = one ad = one reward; there is no state transition,
so this is a contextual bandit, not an MDP (do not call it an "RL environment").
"""

__version__ = "0.2.0"