ci: add GitHub Actions workflow for automated releases

- Create automatic ZIP file generation on tag push
- Add release notes template
- Ensure clean plugin package without development files

Author: richyBaxter

.github/workflows/release.yml

@@ -0,0 +1,72 @@
+name: Create Release
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    
+    steps:
+    - uses: actions/checkout@v3
+    
+    - name: Create plugin directory
+      run: mkdir -p postgrid-wp
+    
+    - name: Copy plugin files
+      run: |
+        rsync -av --exclude-from='.gitignore' \
+          --exclude='.git' \
+          --exclude='.github' \
+          --exclude='*.md' \
+          --exclude='composer.lock' \
+          --exclude='node_modules' \
+          --exclude='tests' \
+          --exclude='phpunit.xml' \
+          --exclude='.gitignore' \
+          --exclude='package-lock.json' \
+          --exclude='RELEASE_NOTES_*' \
+          ./ postgrid-wp/
+    
+    - name: Create ZIP file
+      run: zip -r postgrid-wp-${{ github.ref_name }}.zip postgrid-wp/
+    
+    - name: Create Release
+      id: create_release
+      uses: actions/create-release@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        tag_name: ${{ github.ref }}
+        release_name: PostGrid ${{ github.ref_name }}
+        body: |
+          ## PostGrid ${{ github.ref_name }}
+          
+          See [CHANGELOG.md](https://github.com/${{ github.repository }}/blob/main/CHANGELOG.md) for details.
+          
+          ### Installation
+          
+          1. Download `postgrid-wp-${{ github.ref_name }}.zip`
+          2. Go to WordPress Admin → Plugins → Add New → Upload Plugin
+          3. Select the downloaded ZIP file
+          4. Activate the plugin
+          
+          ### Migration from Caxton
+          
+          PostGrid includes full backwards compatibility with Caxton. See the [Migration Guide](https://github.com/${{ github.repository }}/blob/main/CAXTON_MIGRATION_GUIDE.md) for details.
+        draft: false
+        prerelease: false
+    
+    - name: Upload Release Asset
+      uses: actions/upload-release-asset@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        upload_url: ${{ steps.create_release.outputs.upload_url }}
+        asset_path: ./postgrid-wp-${{ github.ref_name }}.zip
+        asset_name: postgrid-wp-${{ github.ref_name }}.zip
+        asset_content_type: application/zip

RELEASE_NOTES_v0.1.0.md

@@ -0,0 +1,101 @@
+# Release Notes for v0.1.0
+
+## PostGrid v0.1.0 - Initial Release
+
+**Release Date**: 10th July 2025
+
+### 🎉 Introducing PostGrid
+
+PostGrid is a lightweight WordPress posts grid block that's been completely refactored from the Caxton v1.30.1 codebase. This initial release focuses on simplicity, performance, and seamless migration from Caxton.
+
+### ✨ Key Features
+
+- **Clean & Minimal**: Simplified posts grid with modern WordPress standards
+- **Responsive Design**: 1-6 column layouts that adapt to any screen
+- **Smart Filtering**: Category selection and customisable post counts
+- **Flexible Display**: Toggle dates and excerpts to suit your needs
+- **Zero Dependencies**: No external libraries for maximum performance
+- **PSR-4 Autoloading**: Modern PHP architecture
+- **Direct Access Prevention**: Security-first approach on all PHP files
+
+### 🔄 Legacy Caxton Support
+
+PostGrid includes comprehensive backwards compatibility:
+- Automatic recognition of Caxton shortcodes (`[caxton/posts]`, `[caxton/posts-grid]`, etc.)
+- Intelligent attribute mapping
+- Gutenberg block conversion via `render_block` filter
+- Zero-downtime migration
+
+### 📦 Installation
+
+#### From GitHub Release
+1. Download `postgrid-wp-v0.1.0.zip` from the releases page
+2. Navigate to WordPress Admin → Plugins → Add New → Upload Plugin
+3. Select the downloaded file and activate
+
+#### From Source
+1. Clone the repository: `git clone https://github.com/richardbaxterseo/postgrid-wp.git`
+2. Upload to `wp-content/plugins/postgrid-wp/`
+3. Activate via WordPress admin
+
+### 🚀 Migration from Caxton
+
+If you're currently using Caxton:
+1. Install PostGrid alongside Caxton
+2. Test your existing grids - they'll work immediately
+3. Once verified, deactivate Caxton
+4. Your grids continue working seamlessly
+
+**Supported Caxton Formats**:
+- `[caxton/posts]`
+- `[caxton/posts-grid]`
+- `[caxton/post-grid]`
+- `[caxton/grid]`
+- Gutenberg blocks: `<!-- wp:caxton/posts -->`
+
+### 📖 Documentation
+
+- [Migration Guide](https://github.com/richardbaxterseo/postgrid-wp/blob/main/CAXTON_MIGRATION_GUIDE.md)
+- [README](https://github.com/richardbaxterseo/postgrid-wp/blob/main/README.md)
+
+### 🛠️ Technical Details
+
+- **WordPress Version**: 6.0+
+- **PHP Version**: 7.4+
+- **License**: GPL v2 or later
+- **Text Domain**: postgrid
+
+### 🤝 Contributing
+
+PostGrid is open source! Feel free to:
+- Submit issues on [GitHub](https://github.com/richardbaxterseo/postgrid-wp/issues)
+- Create pull requests
+- Share feedback and suggestions
+
+### 📋 Full Changelog
+
+**Added**
+- Initial release of PostGrid plugin
+- Complete refactor from Caxton v1.30.1 codebase
+- Simplified posts grid block with modern WordPress standards
+- Legacy Caxton shortcode support for seamless migration
+- Gutenberg block conversion for Caxton blocks
+- Comprehensive migration guide
+- PSR-4 autoloading
+- Direct access prevention on all PHP files
+
+**Features**
+- Responsive grid layout (1-6 columns)
+- Category filtering
+- Customisable post count
+- Date and excerpt display toggles
+- Order by date, title, or menu order
+- Ascending/descending sort options
+- Clean, minimal design
+- No external dependencies
+
+---
+
+**Download**: [postgrid-wp-v0.1.0.zip](#)  
+**Repository**: https://github.com/richardbaxterseo/postgrid-wp  
+**Issues**: https://github.com/richardbaxterseo/postgrid-wp/issues