fail proxy loudly

[xzrderek]

Note

Introduce proxy optional extra with required deps and explicit ImportError fallbacks; update remote Fireworks tests to fetch traces via adapter and adjust CI to ignore them.

• Proxy/runtime behavior:
  • Add explicit fallbacks in eval_protocol/__init__.py for create_app, AuthProvider, and AccountInfo that raise ImportError with install hint when proxy deps are missing (with pyright ignore for type).
• Optional dependencies:
  • Introduce proxy extra in pyproject.toml with redis, langfuse, and uuid6.
• Remote Fireworks tests:
  • tests/remote_server/test_remote_fireworks.py: add Fireworks tracing output data loader (fireworks_output_data_loader) to fetch traces via FireworksTracingAdapter; track and assert multiple rollout_ids; increase timeout.
  • tests/remote_server/test_remote_fireworks_propagate_status.py: add Fireworks tracing output data loader and use it in RemoteRolloutProcessor while asserting propagated error status.
• CI:
  • Update .github/workflows/ci.yml to ignore tests/remote_server/test_remote_fireworks.py (and keep ignoring the propagate-status test) in parallel test run.
• Lockfile:
  • Update uv.lock to include proxy extras and packages (redis, langfuse, uuid6).

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[dphuang2]

one nit, should be easy to fix