pre release update and small fix

[lorenss-m]

Note

Pre-release eval updates

• Switch to load_tasks() and pass a task list to run_dataset; enforce tool restrictions by setting task.env._agent_include = ["anthropic_computer"] for each task; remove per-agent allowed_tools param
• Keep Claude config in agent_params and run with the same concurrency/step limits

CLI display fix

• Make lock parsing for environment variables null-safe by using or {} and deriving required/optional from variables if present

Docs

• Update docs/quick-links/environments.mdx with a Tip pointing to pre-built tools and simplify FastAPI tools section

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