Under host-mode runner the default 6 workers + 1 retry consistently
land on ~7 flakies and an occasional hard fail per ui-test run
(ui-test #59 most recently). Workers share CPU and the host Docker
daemon with gitea, the long-lived dev stack, and the user's host
Caddy; the extra wall time from contention pushes individual
expectations past their timeouts.
Lower the worker cap to 4 to keep parallelism but give each worker
real CPU headroom, and raise retries to 4 so the rare slow page is
absorbed without surfacing as failure.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Ilia Denisov
7ff81de2b6