Closes the recurrence path of PR #2556. The data fix realigned 8→4
templates in publish-runtime.yml's TEMPLATES variable, but the
underlying drift hazard was unguarded — the next manifest change
could silently leave cascade out of sync again.
This gate fails any PR that changes manifest.json or
publish-runtime.yml in a way that makes the cascade list diverge
from manifest workspace_templates (suffix-stripped). Either
direction is caught:
missing-from-cascade templates that won't auto-rebuild on a new
wheel publish (the codex-stuck-on-stale-runtime
bug class — PR #2512 added codex to manifest,
cascade wasn't updated, codex stayed pinned to
its last-built runtime version for weeks).
extra-in-cascade cascade dispatches to deprecated templates
(the wasted-API-calls + dead-CI-noise class —
PR #2536 pruned 5 templates from manifest;
cascade kept dispatching to all 8 until
PR #2556).
Triggers narrowly: only on PRs that touch manifest.json,
publish-runtime.yml, or the script itself. Fast (single grep+sed+comm
pipeline, no Go build).
Surfaced during the RFC #388 prior-art audit; folded in as the
structural follow-up to the data fix#2556 promised.
Self-tested both failure modes locally before commit:
- Drop codex from cascade → script fails with "MISSING: codex"
- Add langgraph to cascade → script fails with "EXTRA: langgraph"
Refs: https://github.com/Molecule-AI/molecule-controlplane/issues/388
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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