feat(workflows): add closed-PR comment redirect #489
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Add closed-pr-comment.yml: detects comments on closed PRs by non-maintainers, posts a redirect to the issue tracker, and pages oncall via the existing SLACK_WEBHOOK_URL. Update slack-issue-notification.yml: switch to injection-safe env+toJSON pattern and emit a uniform 20-key payload (with event_type discriminator) so the Slack workflow can branch on event type. COE AI-7: an external user reported the SDK SPII OTEL leak by commenting on a closed revert PR; oncall does not monitor closed-PR comments, so the report was missed for ~20 hours.
- Gate Slack notification on already_posted so oncall is paged only on the first external comment per PR. Subsequent comments don't page — the redirect comment has already directed the commenter to issues. - Add per-PR concurrency group so the marker-comment dedup is race-free (cancel-in-progress: false to ensure later runs still execute against the just-posted marker). - Inline steps.pr_state.outputs.state in the Slack payload directly rather than routing it through env: to avoid step-level evaluation ambiguity. The value is enum-typed (merged|closed) so injection-safe.
aidandaly24
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tejaskash
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May 21, 2026
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All three prior review comments addressed. LGTM.
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Summary
Add a workflow that responds to comments on closed PRs by external users — posts a redirect asking them to open a new issue, and pages oncall via Slack so closed-PR comments are not missed.
Also hardens the existing `slack-issue-notification.yml` to use injection-safe `env:` + `toJSON()` and emits a uniform 20-key payload (with `event_type` discriminator) so the Slack workflow can branch on event type.
Why
COE AI-7 (Bedrock AgentCore SDK SPII OTEL leak). An external user reported the v1.4.8 SPII leak by commenting on a closed revert PR in this repo; oncall does not monitor closed-PR comments, so the report was missed for ~20 hours. This closes that detection gap.
This repo is the one the COE was filed against.
Quip: https://quip-amazon.com/SmCwABMBwzgH
Test plan
Workflow-only change. Manual verification once merged:
Slack-side change (out of band)
The shared Slack workflow `GitHub Issue Response - Moab` was updated separately to: