Release version 1.2.0 - Add complete variable product support

This major feature release adds full support for WooCommerce variable products with variation-level pricing configuration.

## Key Features
- Each product variation can have independent tier and package pricing
- AJAX-based dynamic pricing table loading on variation selection
- Admin UI integrated into WooCommerce variation panels
- Full backward compatibility with existing simple product functionality
- WooCommerce Blocks compatibility maintained

## Implementation Highlights
- Effective ID pattern throughout codebase for variation handling
- Variation-specific meta boxes with field prefix support
- Template system updated to support both simple and variation products
- JavaScript enhancements for variation selector integration
- Cart logic updated to handle variation pricing correctly

## Files Changed
- Core: wc-tier-and-package-prices.php (version 1.2.0), composer.json
- Cart: includes/class-wc-tpp-cart.php (effective ID logic)
- Frontend: includes/class-wc-tpp-frontend.php (AJAX endpoint, variation detection)
- Admin: includes/class-wc-tpp-product-meta.php (variation hooks and methods)
- Templates: templates/admin/*.twig (field prefix support, table structure)
- JavaScript: assets/js/*.js (variation support)
- Documentation: CHANGELOG.md, README.md, CLAUDE.md

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

CHANGELOG.md

@@ -5,6 +5,96 @@ All notable changes to WooCommerce Tier and Package Prices will be documented in
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.2.0] - 2025-12-29
+
+### Added - Variable Product Support
+
+**Major Feature**: Complete support for WooCommerce variable products with variation-level pricing
+
+- Variable products can now have tier and package pricing configured independently for each variation
+- Admin UI: Each variation displays tier/package pricing fields in the variation edit panel
+- Frontend: Pricing tables load dynamically via AJAX when customer selects a variation
+- Cart: Variation-specific pricing correctly applied during checkout
+- Quantity restrictions work per-variation (not just per-product)
+- Catalog buttons: "View Options" appears for variable products with restricted variations
+
+### Changed
+
+- **Admin Templates**: Converted tier/package row templates from `<div>` to `<tr>` table structure for better layout
+- **Admin UI**: Simple product pricing fields now use table layout for consistency with variations
+- **Frontend Display**: Variable products show placeholder container; pricing appears on variation selection
+- **Cart Logic**: All cart methods now use "effective ID" pattern (variation ID when present, product ID otherwise)
+- **Template System**: Added `field_prefix` parameter support to admin templates for variation field naming
+
+### Technical Details
+
+#### Backend Changes
+
+- **class-wc-tpp-cart.php**: Added variation ID resolution throughout; updated all meta lookups to use effective ID
+- **class-wc-tpp-frontend.php**:
+  - Updated `get_tier_price()` and `get_package_price()` to accept `variation_id` parameter
+  - Added AJAX endpoint `ajax_get_variation_pricing()` for fetching variation pricing data
+  - Updated `display_pricing_table()` to detect variable products and show placeholder
+  - Fixed `modify_catalog_add_to_cart_button()` to check variations for restrictions
+- **class-wc-tpp-product-meta.php**:
+  - Added hooks: `woocommerce_variation_options_pricing`, `woocommerce_save_product_variation`
+  - New method: `add_variation_pricing_fields()` - renders pricing UI in variation panels
+  - New method: `save_variation_pricing_fields()` - saves variation-specific pricing data
+  - New methods: `render_variation_tier_row()`, `render_variation_package_row()` - variation rendering helpers
+
+#### Frontend Changes
+
+- **frontend.js**:
+  - Added variation selector integration listening to `found_variation` and `reset_data` events
+  - Implemented AJAX fetching of variation pricing when variation selected
+  - Dynamic quantity restriction handling per-variation
+  - Re-initialization of event handlers for dynamically loaded pricing tables
+- **admin.js**:
+  - Separated simple product and variation handlers
+  - Variation-specific add/remove tier/package row management
+  - Context-aware template selection using variation loop index
+
+#### Template Changes
+
+- **tier-row.twig**: Added `field_prefix` variable for variation field naming; changed to `<tr>` structure
+- **package-row.twig**: Added `field_prefix` variable for variation field naming; changed to `<tr>` structure
+
+#### Data Storage
+
+- Meta keys remain the same: `_wc_tpp_tiers`, `_wc_tpp_packages`, `_wc_tpp_restrict_to_packages`
+- Simple products: Stored on product post meta
+- Variations: Stored on variation post meta (independent per-variation)
+
+### Backward Compatibility
+
+- **100% backward compatible** - No breaking changes
+- Simple products continue working exactly as before
+- Existing tier/package data unaffected
+- No database migrations required
+- Templates remain compatible (field_prefix optional)
+
+### Migration Notes
+
+- Existing installations can upgrade seamlessly
+- Variable products simply gain new functionality
+- No action required for existing simple product configurations
+
+### Performance Considerations
+
+- AJAX requests only made when variation selected (not on page load)
+- Pricing data fetched per-variation (not all variations at once)
+- Nonce verification on all AJAX requests for security
+- Template rendering server-side for SEO/performance
+
+### Testing Performed
+
+- Simple products: All existing functionality verified
+- Variable products: Tier pricing, package pricing, restrictions tested per-variation
+- Mixed carts: Simple + variable products working correctly
+- WooCommerce Blocks: Cart block, mini-cart block, checkout block compatibility verified
+- Admin UI: Add/remove rows working for both simple products and variations
+- Quantity restrictions: Enforced correctly per-variation in cart and checkout
+
 ## [1.1.22] - 2025-12-23
 
 ### Changed