Map trajectory records to OpenAI Evals or LangSmith-style traces

[weich97]

Scope

Design a conversion layer from TradeArena trajectory records into an eval/trace schema used by adjacent agent tooling.

Discussion points

• How to represent risk reports as guardrail or grader events.
• How to represent simulated fills as tool results.
• What raw provider text remains redacted by default.

Acceptance criteria

• A schema example is added.
• A fixture conversion test is added.
• Docs explain compatibility limits.

Validation

python -m pytest tests/test_trace_schema_export.py -q