The reviewer's task is pure document reasoning over text already in its
prompt -- internal consistency, terminology drift, cross-references --
and never needs shell access. With Bash available and pinned to model:
haiku, the agent was externalizing tracking state into /tmp scratchpad
files; on OpenCode those bash invocations blocked indefinitely (39-88
minute hangs reported in #832). The subagent template's
"operationally read-only" prose constraint did not reliably suppress
the behavior at the model level, so the deterministic fix is removing
the tool from the allowlist.
A pinned frontmatter test prevents Bash from being re-added to
ce-coherence-reviewer. The NO_BASH_AGENTS set extends naturally to
other pure-document reviewers if needed.
Fixes#832
Trevin Chow
994b69612f