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>

assets/js/frontend.js

@@ -244,6 +244,114 @@
         if ($quantityInput.length > 0 && $addToCartButton.length > 0) {
             updateAddToCartButton();
         }
+
+        // ========================================
+        // Variable Product Support
+        // ========================================
+
+        const $variationsForm = $('.variations_form');
+        const $pricingTableContainer = $('.wc-tpp-pricing-table-container');
+
+        if ($variationsForm.length && $pricingTableContainer.length) {
+            // Handle variation selection
+            $variationsForm.on('found_variation', function(event, variation) {
+                if (!variation.variation_id) {
+                    return;
+                }
+
+                // Show loading state
+                $pricingTableContainer.html('<div class="wc-tpp-loading">Loading pricing...</div>').show();
+
+                // Fetch variation pricing via AJAX
+                $.ajax({
+                    url: wcTppData.ajax_url,
+                    type: 'POST',
+                    data: {
+                        action: 'wc_tpp_get_variation_pricing',
+                        nonce: wcTppData.nonce,
+                        variation_id: variation.variation_id
+                    },
+                    success: function(response) {
+                        if (response.success && response.data.has_pricing) {
+                            // Display the pricing table HTML
+                            $pricingTableContainer.html(response.data.html).show();
+
+                            // Re-initialize event handlers for the new content
+                            initializePricingHandlers();
+
+                            // Handle quantity restrictions
+                            if (response.data.restrict_to_packages) {
+                                $('input.qty').hide().closest('.quantity').hide();
+                                $('<style>.quantity { display: none !important; }</style>').appendTo('head');
+                            } else {
+                                $('input.qty').show().closest('.quantity').show();
+                                $('style:contains(".quantity { display: none")').remove();
+                            }
+                        } else {
+                            // No pricing for this variation
+                            $pricingTableContainer.html('').hide();
+                            $('input.qty').show().closest('.quantity').show();
+                            $('style:contains(".quantity { display: none")').remove();
+                        }
+                    },
+                    error: function() {
+                        $pricingTableContainer.html('').hide();
+                    }
+                });
+            });
+
+            // Handle variation reset
+            $variationsForm.on('reset_data', function() {
+                $pricingTableContainer.html('').hide();
+                $('input.qty').show().closest('.quantity').show();
+                $('style:contains(".quantity { display: none")').remove();
+            });
+
+            // Initialize pricing handlers for dynamically loaded content
+            function initializePricingHandlers() {
+                // Re-attach package selection handlers
+                $('.wc-tpp-select-package').off('click').on('click', function(e) {
+                    e.preventDefault();
+                    const $package = $(this).closest('.wc-tpp-package');
+                    const qty = parseInt($package.data('qty'));
+                    const $qtyInput = $('input.qty');
+
+                    if ($qtyInput.length === 0 || $qtyInput.is(':hidden')) {
+                        // Create hidden input for restricted products
+                        if ($('.qty-hidden-input').length === 0) {
+                            $('.single_add_to_cart_button').before('<input type="hidden" name="quantity" class="qty qty-hidden-input" value="1" />');
+                        }
+                        $('.qty-hidden-input').val(qty);
+                    } else {
+                        $qtyInput.val(qty).trigger('change');
+                    }
+
+                    // Highlight selected package
+                    $('.wc-tpp-package').removeClass('wc-tpp-selected');
+                    $package.addClass('wc-tpp-selected');
+
+                    // Scroll to add to cart button
+                    $('html, body').animate({
+                        scrollTop: $('.single_add_to_cart_button').offset().top - 100
+                    }, 500);
+                });
+
+                // Re-attach tier row click handlers
+                $('.wc-tpp-tier-pricing-table tbody tr').off('click').on('click', function() {
+                    const minQty = parseInt($(this).data('min-qty'));
+                    const $qtyInput = $('input.qty');
+
+                    if ($qtyInput.length > 0 && $qtyInput.is(':visible')) {
+                        $qtyInput.val(minQty).trigger('change');
+
+                        // Scroll to quantity input
+                        $('html, body').animate({
+                            scrollTop: $qtyInput.offset().top - 100
+                        }, 300);
+                    }
+                });
+            }
+        }
     });
 
 })(jQuery);