WooCommerce Merit Aktiva Integration

• Added tax rate mapping: every WooCommerce tax rate is linked to a Merit tax rate from a dropdown instead of pasting GUIDs
• Added optional GL account per WooCommerce tax rate
• Added VAT-exempt order rule for EU/UK VAT Validation Manager and similar plugins - own Merit tax rate and separate revenue accounts for goods and services, with a choice of where shipping and fees are booked
• Added optional background invoice creation via Action Scheduler - a slow or unreachable Merit API no longer blocks the order status change. Temporary failures are retried after 5 min, 15 min, 1 h, 3 h and 6 h; invoices Merit rejects outright are reported straight away instead of being retried pointlessly
• Added activity log with separate retention for events (14 days) and errors (90 days), readable in the System Status tab, with optional API request logging
• Added project and department support - a global default plus per-product overrides, sent as ProjectCode and DepartmentCode on every invoice row
• Added Merit account code and dimension fields to the product category screen - the invoice builder already read them but nothing could set them
• Added tax configuration overview to System Status: mapping coverage, VAT-exempt rule state, background queue state and detected VAT plugins
• Added Russian (ru_RU) translation and completed the Estonian one
• Changed Merit tax rate, project, department and dimension lists to be cached with a manual refresh button
• Changed product codes longer than Merit's 20 character limit to be shortened consistently on both the item card and the invoice rows, with a hash suffix so two long codes cannot collapse into one Merit item
• Changed default shipping account from 3003 to 3000 - 3003 does not exist in the default Merit chart of accounts (existing settings are kept)
• Fixed invoice totals being sent before discounts while the rows carried the discount - orders with a coupon reached Merit with the total and VAT overstated by the discount amount (same fix for credit invoices and refunds)
• Fixed invoice row rounding - the row discount now absorbs the unit price rounding residue, so the row total in Merit matches the WooCommerce line to the cent
• Fixed item descriptions not being capped at Merit's 150 character limit on invoice rows
• Fixed warehouse code never being added to invoice rows when inventory tracking was enabled
• Fixed license activation notice linking to a non-existent settings page

Added a function to select the default tax rate for invoices.

Enhanced functionality and bug fixes

• Company fields are now immediately visible in the Woo Block Editor checkout.
• Added support for E-Business Register Autocomplete (Company name, reg. code, address, postal code)
• When using the "Display invoice number instead of order name" method, an invoice number is also created in cases where automatic payment receipt is not performed in WooCommerce (e.g., "Pay by bank transfer").
• Added the "Create credit invoice when order status is changed to 'refunded'" option