Summary

• Add a focused scripts/export-promptfoo-config.ts path that exports representative AgentV eval YAML into a Promptfoo config for validation.
• Preserve Promptfoo-native colon provider IDs and labels, lower agentv:codex-cli to a generated Promptfoo-loadable TypeScript custom provider module, and keep validation free of live provider calls.
• Export the supported host/filesystem environment subset into a generated Promptfoo beforeAll extension, while passing the resolved isolated workdir through provider config, default-test vars, and metadata.
• Fail Docker-shaped environment export with a clear diagnostic instead of degrading isolation, image/context, mounts, services, resources, secrets, or provenance.
• Add a CI Promptfoo Export job that runs exporter tests, exports the host environment fixture, and validates it with promptfoo validate config.
• Document direct Promptfoo provider compatibility vs AgentV-only compatibility by export.

Dependency Notes

This PR is stacked on feat/av-uttb-provider-surface-migration-docs because it builds on that provider-surface docs/migration branch. I did not merge feat/av-ctfu-providers-schema: that active worktree currently has uncommitted parser/schema changes owned by worker av-ctfu-providers-schema, so this exporter stays out of those core parser files.

Promptfoo 0.121.15 and 0.121.17 both reject provider IDs with a file://...ts:callApi suffix during config validation. The exporter therefore emits the accepted TypeScript custom provider module form file://.agentv/generated/promptfoo/providers/codex-cli-provider.ts while the generated module also exposes callApi internally.

Validation

• bun run validate:promptfoo-export
• bunx biome check scripts/export-promptfoo-config.ts scripts/export-promptfoo-config.test.ts scripts/fixtures/promptfoo-export/host-environment.agentv.yaml scripts/fixtures/promptfoo-export/docker-environment-unsupported.agentv.yaml .github/workflows/ci.yml apps/web/src/content/docs/docs/next/reference/promptfoo-parity.mdx
• tmpdir=$(mktemp -d) && bun scripts/export-promptfoo-config.ts --input scripts/fixtures/promptfoo-export/host-environment.agentv.yaml --output "$tmpdir/promptfooconfig.yaml" && bunx promptfoo@0.121.15 validate config -c "$tmpdir/promptfooconfig.yaml"
• bun run typecheck
• git diff --check

Live dogfood was not run because this change only exports and validates/config-loads Promptfoo config and does not execute AgentV eval/provider/grader behavior.