docs(agents): fix test command — tests/ does not exist

[3822802]

Summary

AGENTS.md documents a test command that cannot run: there is no tests/ directory in this repo.

Current

## Testing

- Run the llms-kit suite: `node --test tests/`
- Include liveness checks against the deployed site: `LLMS_LIVE=1 node --test tests/`

Problem

• tests/ does not exist — the repo root contains .claude/, .github/, app/, githooks/, public/, scripts/, vendor/
• The project uses vitest, not node --test:
  • package.json → "test": "vitest run", vitest@^2.1.9 in devDependencies
  • README.md → "npm test — vitest"
  • CI (.github/workflows/ci.yml) runs vitest

An agent that follows AGENTS.md gets Could not find test files and may conclude the suite is broken, when it simply used the wrong runner.

Fix

Point the Testing section at the command the project actually uses, keeping the LLMS_LIVE=1 env var since that is read by the tests themselves, not by the runner.

-- Run the llms-kit suite: `node --test tests/`
-- Include liveness checks against the deployed site: `LLMS_LIVE=1 node --test tests/`
+- Run the test suite: `npm test` (vitest)
+- Include liveness checks against the deployed site: `LLMS_LIVE=1 npm test`

[vercel]

@3822802 is attempting to deploy a commit to the Coinbase Team on Vercel.

A member of the Team first needs to authorize it.

[cb-heimdall]

🟡 Heimdall Review Status

Requirement	Status	More Info
Reviews	🟡 0/1	Denominator calculation Show calculation 1 if user is bot 0 1 if user is external 0 2 if repo is sensitive 0 From .codeflow.yml 1 Additional review requirements Show calculation Max 0 0 From CODEOWNERS 0 Global minimum 0 Max 1 1 1 if commit is unverified 0 Sum 1