Gymnasium Bridge (Subprocess, JSON Lines)

Umbrella import for TorchLean’s Gymnasium subprocess bridge.

The bridge has two layers:

• NN.Runtime.RL.Gymnasium.Client: JSON-lines protocol, startup handshake, and low-level reset/stepRaw operations.
• NN.Runtime.RL.Gymnasium.Session: stores the previous observation so stepChecked can emit a full observed transition validated by the trust-boundary contract.

References:

• Gymnasium API docs (reset/step, terminated vs truncated): https://gymnasium.farama.org/
• The original Gym API paper (background on the env interface): https://arxiv.org/abs/1606.01540
• Gymnasium source repository (implementation reference): https://github.com/Farama-Foundation/Gymnasium
• Trust-boundary rationale: see NN.Runtime.RL.Boundary.