docs(agents): add Cursor Cloud setup instructions

.agents/AGENTS.md

@@ -41,3 +41,19 @@ feat(notifications): add real-time user notifications
 chore(deps): update dependencies
 docs(readme): add setup instructions
 ```
+
+## Cursor Cloud specific instructions
+
+This repo is the `create-mf2-app` monorepo (a Bun + Turborepo workspace), not a scaffolded app. Bun is the package manager (pinned via `packageManager` in `package.json`) and is installed to `~/.bun/bin` (added to `~/.bashrc` by the installer, so interactive shells find it automatically). The update script keeps Bun and `bun install` current.
+
+Runnable pieces and how to exercise them (commands live in the root and per-package `package.json` / CI at `.github/workflows/ci.yml`):
+
+- CLI (`apps/cli`, the published product `create-mf2-app`): lint `bun run check`, test `bun test apps/cli/scripts/`, build `bun run build --filter=create-mf2-app`. Run it end-to-end non-interactively with `node apps/cli/dist/index.js <name> --package-manager bun` (add `--disable-git` to skip the git commit). Scaffolding runs a full `bun install` for the generated 8-app/22-package monorepo (~5500 packages), so it is slow but works offline against cached deps.
+- `apps/web`: Next.js marketing site, `bun run dev --filter=web` serves on port 3001.
+- `apps/docs`: Mintlify docs, `bun run dev --filter=docs` (port 3004) — requires the global `mint` CLI (`bun add -g mint` / `npm i -g mint`), which is not part of the update script; treat as optional.
+
+Non-obvious gotchas:
+
+- `apps/cli/template/**` is the scaffold payload and is intentionally excluded from `bun run check` (Biome) and `react-doctor`; do not lint/typecheck it as part of this repo. CI typechecks the template separately by running `bun install` + `bun run typecheck` inside `apps/cli/template`.
+- `bunfig.toml` enables an isolated linker and a 3-day `minimumReleaseAge` cooldown on newly published packages; `bun install` respects the committed lockfile so this does not block installs.
+- `typecheck` scripts use `tsgo` (from `@typescript/native-preview`), only available inside packages/apps that depend on it — not from the repo root.