Convert docs-site from submodule to regular directory

- Remove submodule reference for docs-site
- Add all documentation files as regular tracked files
- Preserves all existing documentation content

Author: dgellow

docs-site

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+# build output
+dist/
+# generated types
+.astro/
+
+# dependencies
+node_modules/
+
+# logs
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+
+
+# environment variables
+.env
+.env.production
+
+# macOS-specific files
+.DS_Store

docs-site/.gitignore

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+# Starlight Starter Kit: Basics
+
+[![Built with Starlight](https://astro.badg.es/v2/built-with-starlight/tiny.svg)](https://starlight.astro.build)
+
+```
+npm create astro@latest -- --template starlight
+```
+
+[![Open in StackBlitz](https://developer.stackblitz.com/img/open_in_stackblitz.svg)](https://stackblitz.com/github/withastro/starlight/tree/main/examples/basics)
+[![Open with CodeSandbox](https://assets.codesandbox.io/github/button-edit-lime.svg)](https://codesandbox.io/p/sandbox/github/withastro/starlight/tree/main/examples/basics)
+[![Deploy to Netlify](https://www.netlify.com/img/deploy/button.svg)](https://app.netlify.com/start/deploy?repository=https://github.com/withastro/starlight&create_from_path=examples/basics)
+[![Deploy with Vercel](https://vercel.com/button)](https://vercel.com/new/clone?repository-url=https%3A%2F%2Fgithub.com%2Fwithastro%2Fstarlight%2Ftree%2Fmain%2Fexamples%2Fbasics&project-name=my-starlight-docs&repository-name=my-starlight-docs)
+
+> 🧑‍🚀 **Seasoned astronaut?** Delete this file. Have fun!
+
+## 🚀 Project Structure
+
+Inside of your Astro + Starlight project, you'll see the following folders and files:
+
+```
+.
+├── public/
+├── src/
+│   ├── assets/
+│   ├── content/
+│   │   ├── docs/
+│   └── content.config.ts
+├── astro.config.mjs
+├── package.json
+└── tsconfig.json
+```
+
+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.
+
+Images can be added to `src/assets/` and embedded in Markdown with a relative link.
+
+Static assets, like favicons, can be placed in the `public/` directory.
+
+## 🧞 Commands
+
+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).

docs-site/README.md

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+// @ts-check
+import { defineConfig } from 'astro/config';
+import starlight from '@astrojs/starlight';
+
+// https://astro.build/config
+export default defineConfig({
+	site: 'https://dgellow.github.io',
+	base: '/mcp-front',
+	integrations: [
+		starlight({
+			title: 'MCP Front',
+			description: 'OAuth 2.1 authenticated proxy for Model Context Protocol servers',
+			logo: {
+				alt: 'MCP Front Logo',
+				src: './src/assets/logo.svg',
+			},
+			social: [
+				{ icon: 'github', label: 'GitHub', href: 'https://github.com/dgellow/mcp-front' },
+			],
+			sidebar: [
+				{
+					label: 'Start Here',
+					items: [
+						{ label: 'Introduction', slug: 'index' },
+						{ label: 'Getting Started', slug: 'getting-started' },
+						{ label: 'Architecture', slug: 'architecture' },
+					],
+				},
+				{
+					label: 'Configuration',
+					items: [
+						{ label: 'Overview', slug: 'config/overview' },
+						{ label: 'Bearer Token Auth', slug: 'config/bearer-token' },
+						{ label: 'OAuth 2.1 Auth', slug: 'config/oauth' },
+						{ label: 'MCP Servers', slug: 'config/mcp-servers' },
+						{ label: 'Environment Variables', slug: 'config/environment' },
+					],
+				},
+				{
+					label: 'Deployment',
+					items: [
+						{ label: 'Docker', slug: 'deployment/docker' },
+						{ label: 'Docker Compose', slug: 'deployment/docker-compose' },
+						{ label: 'Google Cloud Run', slug: 'deployment/cloud-run' },
+						{ label: 'Production Setup', slug: 'deployment/production' },
+					],
+				},
+				{
+					label: 'OAuth Guide',
+					items: [
+						{ label: 'OAuth 2.1 Overview', slug: 'oauth/overview' },
+						{ label: 'Google Workspace Setup', slug: 'oauth/google-workspace' },
+						{ label: 'Firestore Configuration', slug: 'oauth/firestore' },
+						{ label: 'Security Best Practices', slug: 'oauth/security' },
+					],
+				},
+				{
+					label: 'API Reference',
+					items: [
+						{ label: 'Endpoints', slug: 'api/endpoints' },
+						{ label: 'Authentication', slug: 'api/authentication' },
+						{ label: 'SSE Protocol', slug: 'api/sse-protocol' },
+					],
+				},
+				{
+					label: 'Development',
+					items: [
+							{ label: 'Testing', slug: 'dev/testing' },
+						{ label: 'Architecture Decisions', slug: 'dev/architecture-decisions' },
+					],
+				},
+			],
+			customCss: ['./src/styles/custom.css'],
+		}),
+	],
+});