fix(#1492): prevent triage agent from creating unknown labels - #1495
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Add a label-existence guard in post-triage.sh that fetches the repo's existing labels before processing label_actions. Agent-recommended labels that don't already exist in the repo are skipped with a warning instead of being auto-created by the GitHub API. Also add issue-type awareness to the issue-labels skill: when a repo uses GitHub issue types, the agent is instructed not to recommend labels that duplicate the issue type (e.g., no 'bug' label when the issue is typed as Bug). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Add a label-existence guard in post-triage.sh that fetches the repo's existing labels before processing label_actions. Agent-recommended labels that don't already exist in the repo are skipped with a warning instead of being auto-created by the GitHub API.
Also add issue-type awareness to the issue-labels skill: when a repo uses GitHub issue types, the agent is instructed not to recommend labels that duplicate the issue type (e.g., no 'bug' label when the issue is typed as Bug).
Co-Authored-By: Claude Opus 4.6 noreply@anthropic.com
Closes #1492
Post-script verification
agent/1492-label-existence-guard)addf9a24b1a9d937a2e2027b8c67a84f8d087739..HEAD)