docs: add CONTRIBUTING.md and build status badge

CONTRIBUTING.md

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+# Contributing to agent-browser
+
+Thanks for your interest in contributing! This guide will help you get started.
+
+## Development Setup
+
+### Prerequisites
+
+- **Node.js** >= 18
+- **pnpm** (install via `npm install -g pnpm`)
+- **Rust** (optional, only needed for native binary builds): [rustup.rs](https://rustup.rs)
+
+### Getting Started
+
+1. **Fork and clone the repository:**
+
+   ```bash
+   git clone https://github.com/<your-username>/agent-browser.git
+   cd agent-browser
+   ```
+
+2. **Install dependencies:**
+
+   ```bash
+   pnpm install
+   ```
+
+3. **Build the TypeScript daemon:**
+
+   ```bash
+   pnpm build
+   ```
+
+4. **Build the native Rust CLI (optional, requires Rust):**
+
+   ```bash
+   pnpm build:native
+   ```
+
+5. **Link for local development:**
+
+   ```bash
+   pnpm link --global
+   agent-browser install  # Download Chromium
+   ```
+
+6. **Run in dev mode (auto-reloads TypeScript):**
+
+   ```bash
+   pnpm dev
+   ```
+
+### Running Tests
+
+```bash
+pnpm test            # Run tests once
+pnpm test:watch      # Run tests in watch mode
+```
+
+### Type Checking
+
+```bash
+pnpm typecheck
+```
+
+## Coding Style
+
+- **Formatter:** [Prettier](https://prettier.io/) — run `pnpm format` before committing.
+- **Lint-staged:** Prettier runs automatically on staged `.ts` files via Husky + lint-staged.
+- **TypeScript strict mode** is enabled. Avoid `any` unless absolutely necessary.
+- **Naming conventions:**
+  - `camelCase` for variables and functions
+  - `PascalCase` for classes and types
+  - `kebab-case` for file names
+- **Keep functions small** and focused. Extract helpers when logic grows beyond ~30 lines.
+
+## Project Structure
+
+```
+agent-browser/
+├── src/            # TypeScript daemon (WebSocket server, Playwright bridge)
+├── cli/            # Rust CLI source (Cargo project)
+├── bin/            # Platform binaries and entry point scripts
+├── dist/           # Compiled TypeScript output (committed)
+├── scripts/        # Build and release scripts
+├── test/           # Test files
+├── docs/           # Documentation site (Next.js)
+├── docker/         # Docker build configs for cross-platform builds
+└── skills/         # AI agent skill definitions
+```
+
+## Submitting a PR
+
+1. **Create a feature branch** from `main`:
+
+   ```bash
+   git checkout -b feat/my-feature
+   ```
+
+2. **Make your changes.** Follow the coding style above.
+
+3. **Run checks locally:**
+
+   ```bash
+   pnpm typecheck
+   pnpm test
+   pnpm format:check
+   ```
+
+4. **Commit with a clear message:**
+
+   ```bash
+   git commit -m "feat: add support for X"
+   ```
+
+   We follow [Conventional Commits](https://www.conventionalcommits.org/):
+   - `feat:` — new features
+   - `fix:` — bug fixes
+   - `docs:` — documentation changes
+   - `refactor:` — code refactoring (no behavior change)
+   - `test:` — adding or updating tests
+   - `chore:` — build, tooling, or dependency updates
+
+5. **Push and open a PR** against the `main` branch:
+
+   ```bash
+   git push origin feat/my-feature
+   ```
+
+6. **PR description:** Clearly describe what changed and why. Link any related issues.
+
+### PR Checklist
+
+- [ ] Code compiles (`pnpm build`)
+- [ ] Tests pass (`pnpm test`)
+- [ ] Type checking passes (`pnpm typecheck`)
+- [ ] Formatting is clean (`pnpm format:check`)
+- [ ] PR description explains the change
+
+## Reporting Issues
+
+- Use [GitHub Issues](https://github.com/dextonai/agent-browser/issues) for bugs and feature requests.
+- Include: OS, Node.js version, agent-browser version, and reproduction steps.
+
+## License
+
+By contributing, you agree that your contributions will be licensed under the [Apache-2.0 License](LICENSE).

README.md

@@ -1,5 +1,9 @@
 # agent-browser
 
+[![CI](https://github.com/dextonai/agent-browser/actions/workflows/ci.yml/badge.svg)](https://github.com/dextonai/agent-browser/actions/workflows/ci.yml)
+[![npm](https://img.shields.io/npm/v/agent-browser)](https://www.npmjs.com/package/agent-browser)
+[![License](https://img.shields.io/github/license/dextonai/agent-browser)](LICENSE)
+
 Headless browser automation CLI for AI agents. Fast Rust CLI with Node.js fallback.
 
 ## Installation