CI Exceptions Policy (Release Readiness)

Last updated: 2026-04-20 Owner: @Neftedollar

Policy

• Required release lane is Self-host CI (.github/workflows/build.yml).
• Allowed exceptions in the required lane: none.
• continue-on-error is not allowed in Self-host CI.
• Archived stage0 workflow is non-blocking by policy and may use continue-on-error.

Allowed exceptions registry

Scope	Allowed	Rationale	Review cadence
.github/workflows/build.yml (Self-host CI)	No	Release-critical lane for LLL-first operation	Every release cut
.github/workflows/legacy-stage0.yml (Archived Stage0 (.NET, manual))	Yes (non-blocking/manual)	Emergency bootstrap diagnostics only	Every release cut

Enforcement

tools/check-release-readiness.sh verifies that:

1. Self-host CI has no continue-on-error.
2. Required release steps are present.
3. Archived stage0 workflow remains manual and explicitly non-blocking.