Release version 1.1.1 - Cart quantity field hiding

Enhanced package quantity restriction enforcement by hiding the cart
quantity input field when restrictions are enabled. This prevents
customers from modifying quantities in the cart to bypass package
restrictions.

Changes:
- Added cart quantity input hiding for restricted products
- Implemented woocommerce_cart_item_quantity filter hook
- Created maybe_hide_cart_quantity_input() method in WC_TPP_Cart
- Fixed cart quantity bypass vulnerability
- Cart displays quantity as read-only text for restricted products

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

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

CHANGELOG.md

@@ -5,6 +5,24 @@ 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).
 
+## [1.1.1] - 2025-12-21
+
+### Added
+- Cart quantity field hiding when package restriction is enabled
+- Automatic read-only quantity display in cart for restricted products
+
+### Changed
+- Cart quantity input replaced with plain text when restrictions apply
+- Enhanced cart display to prevent quantity modification for restricted products
+
+### Fixed
+- Cart quantity bypass vulnerability for package-restricted products
+
+### Technical
+- Added `maybe_hide_cart_quantity_input()` method in WC_TPP_Cart class
+- Extended `woocommerce_cart_item_quantity` filter hook
+- CSS class `wc-tpp-cart-quantity` for styled quantity display
+
 ## [1.1.0] - 2025-12-21
 
 ### Added