HF RL Explorer

We need to tighten up handling of pseudo-header fields.

We need to tighten up handling of pseudo-header fields.: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). All of these say stream error, but hyper-h2 has generally treated errors like this as connection errors, and so we may well continue down that route here.

The task

All of these say stream error, but hyper-h2 has generally treated errors like this as connection errors, and so we may well continue down that route here.

Part of FineEnvs/MiMo-V2.6-RL-harbor-code.