openai/gpt-chat-latest → B (8:1)

Side B introduces substantial new infrastructure: an extensible external URL foundation with a GitHub resolver, new UI actions and write commands for system ingests, resolver cooldown state, URL normalization improvements, recursive garden browsing enhancements, and extensive unit/browser tests. Side A is a focused bug fix that correctly changes rank highlighting to be computed per ranking group instead of globally and adds regression tests, but its scope and long-term architectural impact are much smaller.