Run the review auto-merge gate in shadow mode (Stage 4 calibration) - #148
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Records the would-auto-merge decision (verdict block, run notice, action output) without acting on it. Part of Stage 4 of the human-review optimisation program, QuantEcon/project-translation#15; merging starts this edition's calibration window. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Pull request overview
This PR switches the translations review workflow into the action’s auto-merge “shadow” mode, so the action computes and records the would-auto-merge decision during reviews without taking any automated merge or routing actions.
Changes:
- Passes
auto-merge-mode: shadowtoQuantEcon/action-translationin review mode. - Documents (in-line) that shadow mode only records the decision (verdict block / run notice / output) and does not act on it.
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One-line workflow change: review mode now passes
auto-merge-mode: shadowto action-translation.Nothing observable changes for this repo. Shadow computes the would-auto-merge decision on every review and records it in three places — the
translation-review-verdictblock (wouldAutoMerge: true|false), a workflow notice in the run log, and awould-auto-mergeaction output — and acts on none of them. No PR is merged by machine, no label or routing changes; sync PRs keep going to editors exactly as today.Why: Stage 4 of the human-review optimisation program (QuantEcon/project-translation#15) needs ≥4 weeks of recorded decisions on real sync traffic to measure the gate's base rate (how often it would fire) and precision (whether it would have been right) before the per-criterion floors are set — the floors shipped in verdict v2 are provisional placeholders, and shadow data is what replaces them. Merging this PR starts this edition's calibration window.
Safety: the mechanism shipped in v0.22.0 default-off, is fail-closed throughout (a malformed verdict gates to
editor, never to merge), and was field-validated on the test harness at v0.25.0 on 2026-08-04 — the deployed-path run recordedwouldAutoMerge: trueand took no action (validation record on QuantEcon/project-translation#15).activeis deliberately unimplemented and fails loudly. Reverting is deleting one input line.🤖 Generated with Claude Code