Add AGENTS.md with Cursor Cloud development instructions

[fathiraz]

Summary

Adds AGENTS.md with Cursor Cloud specific instructions for future cloud agents developing in this codebase.

What's included

• Quick reference table for common dev commands (pnpm install, pnpm dev, pnpm build, pnpm typecheck)
• Key caveats: Node.js 25 requirement, pnpm version, absence of test framework, dev server behavior in headless environments, postinstall types generation, and known harmless warnings

Environment setup verified

Check	Status
pnpm install	Passes
pnpm typecheck	Passes (0 errors)
pnpm build	Passes (2.19 MB output)
pnpm dev	Passes (WXT dev server on port 3000)
Extension loaded in Chrome	Working — popup renders correctly

Extension popup with PAT input form

  

---

Summary by cubic

Adds AGENTS.md with Cursor Cloud development setup for the WXT + React browser extension, making local install, dev, and build straightforward. It includes a quick commands table and key caveats: Node.js 25, pnpm@10.32.1, WXT dev server on port 3000 (headless behavior), postinstall type generation, no test framework (use pnpm typecheck), and harmless @primer/react styled-components warnings.

^{Written for commit 876758c. Summary will update on new commits.}