AGENTS.md teaches the agent

Grok Build works with existing tools: AGENTS.md, plugins, hooks, skills, MCP servers. When you start in a repo, it absorbs how you work. That means a short AGENTS.md is leverage for every future session.

What to put in AGENTS.md

• Stack and commands: dev, test, typecheck, build
• Folder map: where routes, components, server code live
• Non-negotiables: no drive-by refactors, no new deps without ask
• UI rules if relevant: tokens, no emoji chrome, mobile-first
• Security: never commit secrets; validate at boundaries only

# Agent instructions

## Commands
- dev: npm run dev
- test: npm test
- typecheck: npm run typecheck
- build: npm run build

## Structure
- src/routes — pages
- src/components — UI
- src/lib — shared logic

## Rules
- Prefer small diffs; no unrelated refactors
- Match existing patterns before inventing new ones
- After changes: run typecheck + relevant tests
- Ask before adding dependencies