updated stuff

packages/live-sdk/README.md

@@ -0,0 +1,40 @@
+# @originmain/live
+
+Browser SDK for [Originmain](https://originmain.com) — installs the React fiber hook that enables live component inspection and design editing in the Originmain canvas.
+
+## Installation
+
+```bash
+npm install @originmain/live
+# or
+pnpm add @originmain/live
+```
+
+## Usage
+
+Import **before React** in your app entry point:
+
+```ts
+// app/layout.tsx (or pages/_app.tsx)
+import '@originmain/live';   // ← must be first
+import React from 'react';
+// ...
+```
+
+Or use the [`@originmain/next`](https://www.npmjs.com/package/@originmain/next) plugin which injects it automatically:
+
+```ts
+// next.config.ts
+import { withOriginmain } from '@originmain/next';
+export default withOriginmain({ reactStrictMode: true });
+```
+
+## How it works
+
+- Installs `__REACT_DEVTOOLS_GLOBAL_HOOK__` **before** React evaluates (module load time), so React captures fiber commits from the very first render.
+- Activates **only** when the page runs inside an Originmain artboard iframe (detected via `#__om_artboard=<id>` in the URL fragment).
+- **Complete no-op** in production or any non-Originmain context — zero runtime cost.
+
+## License
+
+MIT