Set up Cursor Cloud dev environment

[brianshattuck]

Summary

Sets up the development environment for the Superchain Token List (@eth-optimism/tokenlist) so future Cloud Agents can lint, test, build, generate, and validate the list out of the box.

This is a Node.js/TypeScript CLI + library (no web UI / long-running server). Development happens through the package.json scripts.

Changes

• Add AGENTS.md with a ## Cursor Cloud specific instructions section documenting runtime choice (system Node v22 works; no need to force the mise.toml-pinned 18.18.0), the harmless ${NPM_TOKEN} .npmrc warning, the standard scripts, and the optional bot service.

No application/source code was modified.

Environment

• Package manager: pnpm 8.6.0
• Node: system /exec-daemon/node v22 (always first on PATH; project runs fine on it)
• Update script (dependency refresh): NPM_TOKEN=nada pnpm install --frozen-lockfile

Verification

All run successfully:

Command	Result
pnpm typecheck	passes
pnpm lint:check	passes (no warnings)
pnpm test	1/1 suite, 1/1 test passed
pnpm generate --datadir ./data --outfile <file>	generated Superchain Token List, 1086 tokens
pnpm build	ESM + CJS bundles built
pnpm validate --datadir ./data --tokens OP	exit 0 (network to RPC/Etherscan/CoinGecko works)

Note: the generated optimism.tokenlist.json is intentionally not committed (regenerated & published only by CI on master); output was written to /tmp.