Release version 1.1.8 - Critical activation fix

Fixed critical plugin activation error that was preventing the plugin from
being activated on WordPress 6.9.x and WooCommerce 10.x.

The issue was introduced in v1.1.3 when admin classes were still being
instantiated immediately at file include time, before WooCommerce was loaded.
While v1.1.6 fixed this for Frontend and Cart classes, the Admin and
Product Meta classes were missed.

Critical Fix:
- Removed immediate instantiation from WC_TPP_Admin class
- Removed immediate instantiation from WC_TPP_Product_Meta class
- Both classes now instantiated via woocommerce_loaded hook
- Ensures all WooCommerce hooks are available before registration

Technical Changes:
- Removed "new WC_TPP_Admin();" from class-wc-tpp-admin.php
- Removed "new WC_TPP_Product_Meta();" from class-wc-tpp-product-meta.php
- Added both classes to init_classes() method in main plugin file
- All four main classes now follow consistent initialization pattern

Impact:
- Plugin now activates correctly on all WordPress/WooCommerce versions
- Resolves fatal errors during plugin activation
- Last working version was v1.1.2, now fixed in v1.1.8

Updated Files:
- includes/class-wc-tpp-admin.php (removed auto-instantiation)
- includes/class-wc-tpp-product-meta.php (removed auto-instantiation)
- wc-tier-and-package-prices.php (version 1.1.8, init_classes updated)
- composer.json (version 1.1.8)
- CHANGELOG.md (v1.1.8 section added)

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

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

CHANGELOG.md

@@ -5,6 +5,23 @@ 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).
 
+## [1.1.8] - 2025-12-22
+
+### Fixed
+
+- **CRITICAL:** Plugin activation fatal error introduced in v1.1.3-v1.1.7
+- Fixed premature class instantiation of `WC_TPP_Admin` and `WC_TPP_Product_Meta`
+- Both classes now instantiated via `woocommerce_loaded` hook after WooCommerce is available
+- Resolves WordPress 6.9.x and WooCommerce 10.x compatibility issues
+
+### Technical Details
+
+- Removed `new WC_TPP_Admin();` from bottom of class-wc-tpp-admin.php
+- Removed `new WC_TPP_Product_Meta();` from bottom of class-wc-tpp-product-meta.php
+- Added both classes to `init_classes()` method in main plugin file
+- All four main classes (Admin, Product Meta, Frontend, Cart) now follow same initialization pattern
+- Ensures WooCommerce hooks are available before registration
+
 ## [1.1.7] - 2025-12-22
 
 ### Added