Add instant previews page

docs.json

@@ -27,6 +27,7 @@
                 "pages": [
                   "index",
                   "quickstart",
+                  "instant-previews",
                   "ai-native",
                   "migration"
                 ]

instant-previews.mdx

@@ -0,0 +1,61 @@
+---
+title: "Instant previews"
+description: "Generate a hosted preview of any public GitHub repository by replacing the domain in the URL"
+---
+
+Instant previews let you generate a fully-hosted site for any public GitHub repository by replacing `github.com` with `mintlify.com` in the URL.
+
+## How it works
+
+1. Take any public GitHub repository URL:
+   ```
+   https://github.com/owner/repo
+   ```
+
+2. Replace `github.com` with `mintlify.com`:
+   ```
+   https://mintlify.com/owner/repo
+   ```
+
+3. Enter your email to start generation. You'll receive an email when your site is ready.
+
+## Generation process
+
+When you submit a repository, the system:
+
+1. **Provisions** a new hosted site with a unique subdomain
+2. **Analyzes** the repository to discover project context, including:
+   - README content
+   - Programming languages used
+   - GitHub topics and metadata
+   - Homepage URL and branding assets (colors, logos, favicon)
+3. **Generates** content using AI based on your codebase structure
+4. **Reviews** the generated content for quality
+5. **Deploys** the site and sends you an email with the URL
+
+The process typically takes 15-30 minutes.
+
+## Keeping content updated
+
+Generated sites track the source repository they were created from. The system stores:
+
+- The source repository URL
+- The commit SHA at the time of generation
+
+This allows the content to be regenerated when the source repository changes, ensuring your site stays current with your codebase.
+
+## Requirements
+
+- The repository must be public
+- The repository must have a minimum number of GitHub stars
+
+## Claiming your site
+
+After your site is generated, you can sign up to claim it and gain access to:
+
+- The web editor for making changes
+- Custom domain configuration
+- Analytics and feedback
+- All other Mintlify features
+
+The email you receive after generation includes a link to [sign up and claim your site](https://dashboard.mintlify.com/signup).