Summary

• add a terminal Braintrust experiment inspector for listing, latest, and show workflows
• document Braintrust CLI/API usage from the repo without relying on the UI
• add a narrow foundation update skip mechanism for legacy-preservation cases
• tighten spec update prompts and eval criteria for refresh-style edits

Validation

• bun run eval:check
• bun run eval:typecheck
• bun run ci:check

Notes

• Targeted reruns for the previously failing spec evals passed with local and Braintrust reporters.
• This PR does not squash; merge with a merge commit if checks are green.