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Check current labels before modifying. Only remove classification labels that differ from the chosen one and are actually present; only add the chosen label if it's not already there. Eliminates no-op label churn on synchronize events.
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Pull request overview
This PR fixes noisy PR timeline events caused by the AI labeler unconditionally removing and re-adding classification labels on every synchronize event, even when the label hadn't changed. It adds a check of the PR's current labels before making any gh pr edit calls.
Changes:
- Fetch current labels before modifying them, and only remove a classification label if it's currently present and differs from the newly chosen one.
- Only add the newly chosen label if it isn't already applied to the PR.
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Summary
synchronizeevent, even when the label hadn't changed — producing timeline noise like "added bug and removed bug"Test plan
bugwhere the model still picksbug— verify no label events in timelinebugwhere the model now picksenhancement— verifybugremoved andenhancementadded