Release version 1.0.2

- Migrate settings to WooCommerce Settings page
- Add WC_TPP_Settings class for proper WooCommerce integration
- Remove standalone settings submenu
- Improve UX with native WooCommerce settings UI

releases/RELEASE-INFO-1.0.1.md

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+# WooCommerce Tier and Package Prices - Release 1.0.1
+
+**Release Date:** December 21, 2025
+**Version:** 1.0.1
+**Package Size:** 395 KB
+**Git Tag:** v1.0.1
+
+## Download
+
+**File:** `wc-tier-and-package-prices-1.0.1.zip`
+
+### Checksums
+
+**SHA256:**
+```
+92c1385d92527e77646e37f23c1bd1555a4290a5ec9314c0ee6ed896ded55e88
+```
+
+**MD5:**
+```
+e6cfc9b88df9e7763be0cd56517ce8ab
+```
+
+## Installation
+
+1. Download the ZIP file: `wc-tier-and-package-prices-1.0.1.zip`
+2. Log in to your WordPress admin panel
+3. Navigate to **Plugins > Add New > Upload Plugin**
+4. Choose the downloaded ZIP file
+5. Click **Install Now**
+6. After installation, click **Activate Plugin**
+
+### Requirements
+
+- **WordPress:** 6.0 or higher
+- **PHP:** 7.4 or higher
+- **WooCommerce:** 8.0 or higher
+
+## What's New in 1.0.1
+
+### New Features
+- ✅ **Twig Template Engine** - Modern template system with automatic escaping
+- ✅ **Swiss German Translation** - Added de_CH_informal translation
+- ✅ **Template Caching** - Improved performance with compiled templates
+- ✅ **Composer Integration** - Professional dependency management
+
+### Improvements
+- 🔄 Migrated all templates from PHP to Twig format
+- 🔒 Enhanced security with automatic HTML escaping
+- 📁 Better template organization (admin/ and frontend/ directories)
+- 🎨 Cleaner separation of logic and presentation
+
+### Technical Changes
+- Added Twig v3.22.2 dependency
+- Created WC_TPP_Template_Loader class for centralized rendering
+- Integrated WordPress functions (__(), wc_price(), etc.) into Twig
+- Optimized autoloader for production
+- Removed legacy PHP templates
+
+## Package Contents
+
+The installation package includes:
+
+### Core Files
+- `wc-tier-and-package-prices.php` - Main plugin file
+- `composer.json` - Dependency configuration
+- `CHANGELOG.md` - Full version history
+- `README.md` - Plugin documentation
+
+### Directories
+- `includes/` - PHP class files
+  - `class-wc-tpp-admin.php`
+  - `class-wc-tpp-cart.php`
+  - `class-wc-tpp-frontend.php`
+  - `class-wc-tpp-product-meta.php`
+  - `class-wc-tpp-template-loader.php`
+- `templates/` - Twig template files
+  - `admin/` - Admin interface templates
+  - `frontend/` - Customer-facing templates
+- `languages/` - Translation files
+  - de_CH_informal (Swiss German, Informal)
+  - de_DE (German, Germany)
+  - en_US (English, US)
+- `assets/` - CSS and JavaScript files
+- `vendor/` - Composer dependencies (Twig)
+
+## Translations Included
+
+1. **English (US)** - en_US ✅
+2. **German (Germany)** - de_DE ✅
+3. **German (Switzerland, Informal)** - de_CH_informal ✅ NEW!
+
+## Features
+
+### Tier Pricing
+- Quantity-based discount tiers
+- Automatic price calculation
+- Volume discount display
+
+### Package Pricing
+- Fixed-price bundles
+- Custom package labels
+- Multiple package options per product
+
+### Admin Features
+- Easy-to-use product meta boxes
+- Configurable display positions
+- Settings page for global options
+
+### Frontend Features
+- Beautiful pricing tables
+- Real-time cart updates
+- Responsive design
+
+## Support
+
+- **Documentation:** See README.md and USAGE_EXAMPLES.md
+- **Issues:** https://src.bundespruefstelle.ch/wc-tier-package-prices/issues
+- **Author:** Marco Graetsch
+
+## License
+
+GPL v2 or later - https://www.gnu.org/licenses/gpl-2.0.html
+
+---
+
+**Note:** This is a production-ready package with optimized autoloader and no development dependencies.