* fix(js): auto-wrap top-level return expressions in an IIFE
Agents naturally write js() calls with top-level `return`, which is a
syntax error in Runtime.evaluate. js() now detects `return ` and wraps
the expression in an IIFE so both styles work without callers needing
to know the CDP constraint.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
* refactor(run): replace heredoc stdin with -c flag
Drops the <<'PY' heredoc pattern entirely. Agents now pass code via
`browser-harness -c "..."`, which is simpler to construct programmatically
and avoids heredoc quoting pitfalls.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---------
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
Sarath S Menon