v0.12.13

Summary

• Disables global self-validation by default to remove routine done -> validation -> done confirmation turns.
• Keeps explicit self_validate=True support for callers that want the old validation behavior.
• Keeps targeted final-answer recovery nudges and top-N/list count checks enabled.
• Updates the v0.12 plan with the 0.12.12 eval result and 0.12.13 adjustment.

Motivation

The 0.12.12 run recovered part of the blocked-site success regression, but trace detail showed 100/198 tasks called done twice and 102/198 tasks had a provisional finalization turn. Those provisional-final tasks averaged about $0.0614 versus $0.0487 for the rest. This release removes that global confirmation round trip while preserving targeted guards.

Validation

• .venv/bin/python -m unittest discover -s tests
• .venv/bin/python -m compileall -q python tests bench
• cargo check -p bu-py
• .venv/bin/maturin develop
• cargo test -p bu-cdp -p bu-dom -p bu-browser
• .venv/bin/python bench/release_preflight.py
• Installed package reports browser_use_rs.__version__ == "0.12.13"