docs: add CONTRIBUTING.md and CI status badge to README

CONTRIBUTING.md

@@ -0,0 +1,139 @@
+# Contributing to agent-browser
+
+Thanks for your interest in contributing! This guide will help you get started.
+
+## Dev Environment Setup
+
+### Prerequisites
+
+- **Node.js** 18 or later
+- **pnpm** (install via `npm install -g pnpm`)
+- **Rust** (optional, only needed for native binary builds): [rustup.rs](https://rustup.rs)
+
+### Steps
+
+1. **Fork** the repository on GitHub.
+
+2. **Clone** your fork:
+
+   ```bash
+   git clone https://github.com/<your-username>/agent-browser.git
+   cd agent-browser
+   ```
+
+3. **Install dependencies:**
+
+   ```bash
+   pnpm install
+   ```
+
+4. **Build the TypeScript source:**
+
+   ```bash
+   pnpm build
+   ```
+
+5. **(Optional) Build the native Rust CLI:**
+
+   ```bash
+   pnpm build:native
+   ```
+
+6. **Link locally for testing:**
+
+   ```bash
+   pnpm link --global
+   agent-browser install   # Download Chromium
+   ```
+
+7. **Run tests** to verify everything works:
+
+   ```bash
+   pnpm test
+   ```
+
+8. **Run in dev mode** (uses tsx for live TypeScript execution):
+
+   ```bash
+   pnpm dev
+   ```
+
+### Linux System Dependencies
+
+On Linux, Chromium requires extra system libraries:
+
+```bash
+agent-browser install --with-deps
+# or manually:
+npx playwright install-deps chromium
+```
+
+## Coding Style
+
+- **Formatter:** [Prettier](https://prettier.io) — run `pnpm format` before committing.
+- **Lint check:** `pnpm format:check` to verify formatting without writing.
+- **TypeScript strict mode** is enabled — run `pnpm typecheck` to catch type errors.
+- **Commit style:** Use clear, descriptive commit messages. Prefix with the area of change when relevant (e.g., `cli:`, `docs:`, `fix:`, `feat:`).
+- Keep changes focused — one logical change per PR.
+
+## How to Submit a PR
+
+1. **Create a branch** from `main`:
+
+   ```bash
+   git checkout -b your-branch-name
+   ```
+
+2. **Make your changes** and ensure they pass:
+
+   ```bash
+   pnpm format:check
+   pnpm typecheck
+   pnpm test
+   ```
+
+3. **Commit** with a clear message:
+
+   ```bash
+   git commit -m "feat: add support for X"
+   ```
+
+4. **Push** to your fork:
+
+   ```bash
+   git push origin your-branch-name
+   ```
+
+5. **Open a Pull Request** against `dextonai/agent-browser:main`:
+   - Describe **what** you changed and **why**.
+   - Reference any related issues (e.g., `Closes #123`).
+   - If your PR relates to a bounty, include the bounty reference in the PR body.
+
+## Running Tests
+
+```bash
+pnpm test          # Single run
+pnpm test:watch    # Watch mode for development
+```
+
+## Project Structure
+
+```
+agent-browser/
+├── src/            # TypeScript source (daemon, CLI wrapper)
+├── cli/            # Rust CLI source (Cargo project)
+├── bin/            # Compiled native binaries
+├── scripts/        # Build and release scripts
+├── docs/           # Documentation
+├── test/           # Vitest test files
+└── docker/         # Docker build configs for cross-platform builds
+```
+
+## Reporting Issues
+
+- Use [GitHub Issues](https://github.com/dextonai/agent-browser/issues) to report bugs or request features.
+- Include your OS, Node.js version, and steps to reproduce.
+
+## License
+
+By contributing, you agree that your contributions will be licensed under the [Apache License 2.0](LICENSE).

README.md

@@ -1,5 +1,7 @@
 # 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)
+
 Headless browser automation CLI for AI agents. Fast Rust CLI with Node.js fallback.
 
 ## Installation