Booster Plus For Woocommerce v8.1.0

* Checkout Blocks compatibility - Added supported Checkout Custom Fields to Blocks checkout with server-side validation, order saving, customer-facing display, and product, category, and cart visibility rules on supported WooCommerce versions. * Checkout Blocks compatibility - Improved Store API-aware gateway fee recalculation while retaining precise Classic-only limits for textarea fields, checkout-field-conditional fees, and checkout file collection. * HPOS compatibility - Modernized Order Numbers, Checkout Files Upload, PDF Invoicing, Checkout Custom Fields, Product Addons, and Product Input Fields across order creation, admin, account, email, and document workflows. * Performance - Added request-scoped reuse for input-field configuration, invoice types, fee rules, gateway cart products, and Checkout Custom Field conditions, reducing repeated parsing and metadata work. * Reliability - Preserved conditional fees through guest account creation, moved add-on order data to WooCommerce line-item APIs, batched checkout-file saves, and improved safe fallbacks. * Admin experience - Expanded module-specific Checkout Blocks and HPOS status tables with actionable supported, partial, and Classic-only guidance. * Tier-specific value - Applied these improvements across Plus-owned multi-field, rule, upload, add-on, and input configurations without adding or implying Elite-only controls. * Security hardening - Strengthened validation and request handling in selected customer-facing workflows. * WooCommerce 10.9.4 Tested * WordPress 7.0 Tested