docs: add CI badge and contributing guide

CONTRIBUTING.md

@@ -0,0 +1,64 @@
+# Contributing
+
+Thanks for helping improve agent-browser. This guide covers local setup, coding expectations, and the pull request process for documentation and code changes.
+
+## Development Setup
+
+1. Install prerequisites:
+   - Node.js and pnpm for package scripts.
+   - Rust via rustup when building or testing the native CLI.
+   - Chrome when running end-to-end browser tests.
+2. Install dependencies:
+
+   ```bash
+   pnpm install
+   ```
+
+3. Build from source when you need to validate the native CLI:
+
+   ```bash
+   pnpm build:native
+   ```
+
+4. Link the local binary only when you need to test global CLI behavior:
+
+   ```bash
+   pnpm link --global
+   agent-browser install
+   ```
+
+## Coding Style
+
+- Use pnpm for JavaScript package commands.
+- Follow the existing Rust and TypeScript layout instead of introducing new patterns for small changes.
+- Keep CLI flags in kebab-case, for example `--auto-connect`.
+- Respect `NO_COLOR` by using the existing color helpers instead of hardcoded ANSI escape codes.
+- For user-facing feature changes, update the help output, README, skill documentation, docs site, and relevant inline comments together.
+- Keep documentation tables consistent with the existing docs convention; MDX pages use HTML tables.
+
+## Testing
+
+Run the checks that match the files you changed. Common commands include:
+
+```bash
+cd cli && cargo test
+cd cli && cargo fmt -- --check
+cd cli && cargo clippy
+```
+
+End-to-end tests launch a real browser and should run serially:
+
+```bash
+cd cli && cargo test e2e -- --ignored --test-threads=1
+```
+
+For documentation-only changes, review the rendered Markdown and run formatting or link checks when available.
+
+## Pull Request Process
+
+1. Create a focused branch for one change.
+2. Keep commits scoped and descriptive.
+3. Include a clear PR summary, the validation you ran, and any follow-up risks.
+4. Reference the related issue or bounty in the PR body when applicable.
+5. Do not include secrets, local credentials, private runtime configuration, or unrelated generated files.
+6. Respond to review feedback with focused follow-up commits.

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)
+
 Browser automation CLI for AI agents. Fast native Rust CLI.
 
 ## Installation