Release version 1.3.0 - License management and settings sub-tabs

Breaking Changes:
- PHP 8.3+ now required (previously 7.4+)

Added:
- License management integration using magdev/wc-licensed-product-client
- Settings page split into General and License sub-tabs
- License validation and activation via AJAX
- PHP version check with admin notice

Changed:
- Refactored settings class to use modern WooCommerce patterns
- Updated all translations with new license-related strings

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

languages/wc-tier-package-prices-it_CH.po

@@ -277,3 +277,103 @@ msgstr "Prezzo"
 #: includes/class-wc-tpp-product-meta.php:165
 msgid "Label (optional)"
 msgstr "Etichetta (facoltativo)"
+
+#: wc-tier-and-package-prices.php
+msgid "WooCommerce Tier and Package Prices requires PHP 8.3 or higher. Your server is running PHP %s."
+msgstr "WooCommerce Prezzi a scaglioni e pacchetti richiede PHP 8.3 o superiore. Il tuo server utilizza PHP %s."
+
+#: includes/class-wc-tpp-settings.php
+msgid "License"
+msgstr "Licenza"
+
+#: includes/class-wc-tpp-settings.php
+msgid "License Management"
+msgstr "Gestione licenza"
+
+#: includes/class-wc-tpp-settings.php
+msgid "Enter your license key to receive updates and support."
+msgstr "Inserisci la tua chiave di licenza per ricevere aggiornamenti e supporto."
+
+#: includes/class-wc-tpp-settings.php
+msgid "License Server URL"
+msgstr "URL server licenza"
+
+#: includes/class-wc-tpp-settings.php
+msgid "The URL of the license server."
+msgstr "L'URL del server di licenza."
+
+#: includes/class-wc-tpp-settings.php
+msgid "License Key"
+msgstr "Chiave di licenza"
+
+#: includes/class-wc-tpp-settings.php
+msgid "Your license key for this plugin."
+msgstr "La tua chiave di licenza per questo plugin."
+
+#: includes/class-wc-tpp-settings.php
+msgid "License Status"
+msgstr "Stato licenza"
+
+#: includes/class-wc-tpp-settings.php
+msgid "Validate License"
+msgstr "Verifica licenza"
+
+#: includes/class-wc-tpp-settings.php
+msgid "Activate License"
+msgstr "Attiva licenza"
+
+#: includes/class-wc-tpp-settings.php
+msgid "No license activated"
+msgstr "Nessuna licenza attivata"
+
+#: includes/class-wc-tpp-settings.php
+msgid "License Active"
+msgstr "Licenza attiva"
+
+#: includes/class-wc-tpp-settings.php
+msgid "License Invalid"
+msgstr "Licenza non valida"
+
+#: includes/class-wc-tpp-settings.php
+msgid "Lifetime License"
+msgstr "Licenza a vita"
+
+#: includes/class-wc-tpp-settings.php
+msgid "Expires: %s"
+msgstr "Scade il: %s"
+
+#: includes/class-wc-tpp-settings.php
+msgid "Last checked: %s"
+msgstr "Ultima verifica: %s"
+
+#: includes/class-wc-tpp-settings.php
+msgid "License is valid!"
+msgstr "La licenza è valida!"
+
+#: includes/class-wc-tpp-settings.php
+msgid "License activated successfully!"
+msgstr "Licenza attivata con successo!"
+
+#: includes/class-wc-tpp-settings.php
+msgid "Permission denied."
+msgstr "Accesso negato."
+
+#: includes/class-wc-tpp-settings.php
+msgid "License key and server URL are required."
+msgstr "La chiave di licenza e l'URL del server sono obbligatori."
+
+#: includes/class-wc-tpp-settings.php
+msgid "Please enter both license server URL and license key."
+msgstr "Inserisci sia l'URL del server di licenza che la chiave di licenza."
+
+#: includes/class-wc-tpp-settings.php
+msgid "Validation failed."
+msgstr "Verifica fallita."
+
+#: includes/class-wc-tpp-settings.php
+msgid "Activation failed."
+msgstr "Attivazione fallita."
+
+#: includes/class-wc-tpp-settings.php
+msgid "Request failed. Please try again."
+msgstr "Richiesta fallita. Per favore riprova."