Browser control is getting lighter-weight

The fastest way for an agent to use a browser is to let it write code. dev-browser runs Playwright-style scripts in a sandboxed QuickJS WASM environment — install it globally, point the agent at dev-browser --help, and it handles the rest.

npm i -g dev-browser
dev-browser install

From the repo benchmarks: Dev Browser finishes a representative task in 3m 53s at $0.88 with 29 turns. Playwright MCP takes 4m 31s at $1.45 with 51 turns. Batching interactions into scripts beats one-tool-call-per-action.

Pre-approve in .claude/settings.json: "allow": ["Bash(dev-browser *)"].