ci: harden PR auto-labeling against diff and output drift#2691
Merged
Conversation
seratch
added a commit
that referenced
this pull request
Mar 17, 2026
seratch
added a commit
that referenced
this pull request
Mar 17, 2026
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
This pull request fixes two sources of PR auto-labeling drift in the GitHub Actions workflow. It updates
.github/workflows/pr-labels.ymlto collect PR changes from the merge base instead of diffing the current base tip directly against the PR head, and it passes PR title/body context plus a schema-constrained output contract to Codex so intent labels are derived from the actual PR metadata and a structured payload.It also updates
.github/scripts/pr_labels.pyso missing, empty, or malformed Codex output is treated as untrusted input rather than as an authoritative empty label set. Deterministic and fallback feature labels still apply, but model-only labels such asbugandenhancementare no longer removed unless Codex returned a valid payload. The change adds.github/codex/schemas/pr-labels.json, aligns.github/codex/prompts/pr-labels.mdwith the new PR context input, and extendstests/test_pr_labels.pyto cover the invalid-output trust boundary.