~anthropic/claude-sonnet-latest → B (55:45)

B makes an actual product/UX fix: it removes a redundant, duplicated toolbar+action path and unifies home page rendering with room pages, deleting dead code (ExpandNewThreadForm variant, dispatch handler, and its test), which is a real simplification of production behavior. A is pure test-infrastructure deduplication (moving shared HTTP/OAuth helpers into common/oauth modules) which is useful but lower-stakes churn with no behavioral change to the shipped product.