githooks/pre-commit


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#!/usr/bin/env bash
#
# pre-commit hook — block commits when the canonical/mirror pair drifts.
#
# Enable by running: git config core.hooksPath githooks
# (handled by make install-hooks; idempotent on re-run.)

set -euo pipefail

repo_root="$(git rev-parse --show-toplevel)"
"$repo_root/scripts/sync-check.sh" || {
    echo "" >&2
    echo "pre-commit: canonical/mirror drift detected. Commit blocked." >&2
    exit 1
}