No trailing indentation in prompts; preserve fenced body whitespace and Python helpers. Accept semantic HTML attribute/text equivalents; browser behavior and parser syntax are reported independently. Add diagnostic hidden-test pass rate; primary all-tests-required macro score unchanged. Fixed 350 data/test/reference files unchanged. Live browser validation still outstanding.
Fix CSS injection with disabled page scripting and browser workspace setup
Use synchronous style DOM insertion; add runtime computed-style preflight; report exact setup stage; use writable private HOME/XDG/temp paths and subprocess UID/GID rather than Python preexec hooks. Separate read-only requests from writable Docker workspaces. Fixed 350-task dataset unchanged. Live Modal verification remains outstanding.
Bound browser candidate hangs with a phase-aware watchdog
