docs: add license, CI, fix content quality, document rcd provider (#38)

- Add 0BSD LICENSE (matches gogrlx/grlx)
- Add GitHub Actions CI workflow (build + eslint)
- Fix eslint config: add ignores for .astro/dist, add typescript parser deps
- Update README: replace npm boilerplate with bun commands, add badges
- Document rc.d (BSD) service provider alongside systemd
- Update service ingredient to reference provider interface instead of claiming systemd-only
- Fix frontmatter: desc -> description in groups.md and user.md
- Close unclosed :::note directive in ingredients overview
- Fix typo in ingredients overview ('Check them out the list' -> 'Check out the list')
- Update astro 5.17.3 -> 5.18.0

README.md

@@ -1,45 +1,29 @@
 # grlx docs
 
 [![Built with Starlight](https://astro.badg.es/v2/built-with-starlight/tiny.svg)](https://starlight.astro.build)
+[![License: 0BSD](https://img.shields.io/badge/license-0BSD-blue)](LICENSE)
 
+Documentation site for [grlx](https://github.com/gogrlx/grlx) — effective fleet configuration management.
 
-## 🚀 Project Structure
+Live at **[docs.grlx.dev](https://docs.grlx.dev)**
 
-Inside of your Astro + Starlight project, you'll see the following folders and files:
+## Development
 
-```
-.
-├── public/
-├── src/
-│   ├── assets/
-│   ├── content/
-│   │   ├── docs/
-│   │   └── config.ts
-│   └── env.d.ts
-├── astro.config.mjs
-├── package.json
-└── tsconfig.json
-```
+All commands are run from the root of the project:
 
-Starlight looks for `.md` or `.mdx` files in the `src/content/docs/` directory. Each file is exposed as a route based on its file name.
+| Command          | Action                                      |
+| :--------------- | :------------------------------------------ |
+| `bun install`    | Install dependencies                        |
+| `bun run dev`    | Start local dev server at `localhost:4321`   |
+| `bun run build`  | Build production site to `./dist/`           |
+| `bun run preview`| Preview the build locally before deploying   |
 
-Images can be added to `src/assets/` and embedded in Markdown with a relative link.
+## Stack
 
-Static assets, like favicons, can be placed in the `public/` directory.
+- [Astro](https://astro.build) + [Starlight](https://starlight.astro.build)
+- [Tailwind CSS v4](https://tailwindcss.com)
+- [Pagefind](https://pagefind.app) for search (built-in via Starlight)
 
-## 🧞 Commands
+## License
 
-All commands are run from the root of the project, from a terminal:
-
-| Command                   | Action                                           |
-| :------------------------ | :----------------------------------------------- |
-| `npm install`             | Installs dependencies                            |
-| `npm run dev`             | Starts local dev server at `localhost:4321`      |
-| `npm run build`           | Build your production site to `./dist/`          |
-| `npm run preview`         | Preview your build locally, before deploying     |
-| `npm run astro ...`       | Run CLI commands like `astro add`, `astro check` |
-| `npm run astro -- --help` | Get help using the Astro CLI                     |
-
-## 👀 Want to learn more?
-
-Check out [Starlight’s docs](https://starlight.astro.build/), read [the Astro documentation](https://docs.astro.build), or jump into the [Astro Discord server](https://astro.build/chat).
+[0BSD](LICENSE)