methodology

Fan out agent work into isolated worktrees, verify with three lenses that never saw the builder, reduce in plain code, and put a single human gate at the end. What the diamond buys, what it costs, and the failures that shaped it.

Most browser agents reach for vision to read a page. The structured web already ships a clean, LLM-ready description of itself in the accessibility tree — built decades ago for screen readers. Vision is the escape hatch, not the default.