OrderReporter produces empty test_order.log in parallel DRb mode

[gmalette]

Summary

OrderReporter produces an empty log/test_order.log when tests run in parallel using Rails' ActiveSupport::Testing::Parallelization (forked processes with DRb). This makes it impossible to reproduce order-dependent flaky test failures because the test order is never recorded.

Expected behavior

The test order should be recorded even in parallel DRb mode. Ideally as per-worker files, since a single interleaved file doesn't represent any process's actual execution order and can't be used to bisect state pollution between tests.

Environment

• ci-queue 0.85.0
• Rails with parallelize(workers: N, with: :processes)
• minitest 5.27.0