v0.12.10

Changes

• Reuse the previous full PAGE_STATE prompt when URL + cleaned LLM-facing DOM are unchanged.
• Append a small PAGE_STATE_UNCHANGED marker instead of resending another screenshot/DOM blob, allowing provider prompt caching to reuse the retained full state.
• Force a full refresh after 3 reused steps by default.
• Add state_cache_max_reuse_steps, BROWSER_USE_RS_STATE_CACHE_MAX_REUSE_STEPS, and BU_RS_STATE_CACHE_MAX_REUSE_STEPS; set to 0 to disable.
• Add prompt metadata for page-state bytes, page-state image bytes, reuse marker count, and reuse count.

Notes

• The cache key uses cleaned browser state: URL + rendered LLM DOM. It does not use raw DOM, and it ignores exact screenshot bytes to avoid animation/ad churn defeating cache reuse.
• Full PAGE_STATE is not reused when the retained full state contained transient <read_state>.

Validation

• .venv/bin/maturin develop
• .venv/bin/python -m unittest discover -s tests
• .venv/bin/python -m compileall -q python tests bench
• cargo check -p bu-py
• cargo test -p bu-cdp -p bu-dom -p bu-browser
• .venv/bin/python bench/release_preflight.py