[codex] split beta_lab and update atlas smoke seam

[iamh2o]

Summary

• split BetaLabService internals out of beta_lab.py into focused mixin modules while keeping the public entrypoint stable
• update the cross-repo smoke to use Atlas's POST /api/integrations/bloom/v1/materials/accepted seam
• include the current untracked bloom.sh file in the published worktree

Why

• beta_lab.py had grown too large to manage comfortably, and the refactor keeps behavior stable while making the service easier to navigate
• Atlas removed POST /api/intake/outcomes, so the Bloom-side smoke needed to move to the current accepted-material integration seam

Validation

• ruff check tests/test_beta_cross_repo_smoke.py
• bloom db init
• pytest --no-cov tests/test_beta_cross_repo_smoke.py tests/test_beta_lab.py tests/test_queue_flow.py
  • validated against a temporary TapDB config on an alternate local PG port to avoid the shared local2 runtime