Implement versions 0.0.4-0.0.7 features

v0.0.4:
- Add WooCommerce settings tab for default license settings
- Per-product settings override global defaults

v0.0.5:
- Add bulk license operations (activate, deactivate, revoke, extend, delete)
- Add license renewal/extension and lifetime functionality
- Add quick action buttons per license row

v0.0.6:
- Add license dashboard with statistics and analytics
- Add license transfer functionality (admin)
- Add CSV export for licenses
- Add OpenAPI 3.1 specification
- Remove /deactivate API endpoint

v0.0.7:
- Move license dashboard to WooCommerce Reports section
- Add license search and filtering in admin
- Add customer-facing license transfer with AJAX modal
- Add email notifications for license expiration warnings
- Add bulk import licenses from CSV
- Update README with comprehensive documentation

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

src/Admin/SettingsController.php

@@ -0,0 +1,142 @@
+<?php
+/**
+ * Settings Controller
+ *
+ * @package Jeremias\WcLicensedProduct\Admin
+ */
+
+declare(strict_types=1);
+
+namespace Jeremias\WcLicensedProduct\Admin;
+
+/**
+ * Handles WooCommerce settings tab for license defaults
+ */
+final class SettingsController
+{
+    /**
+     * Settings option name
+     */
+    public const OPTION_NAME = 'wc_licensed_product_settings';
+
+    /**
+     * Constructor
+     */
+    public function __construct()
+    {
+        $this->registerHooks();
+    }
+
+    /**
+     * Register WordPress hooks
+     */
+    private function registerHooks(): void
+    {
+        add_filter('woocommerce_settings_tabs_array', [$this, 'addSettingsTab'], 50);
+        add_action('woocommerce_settings_tabs_licensed_product', [$this, 'renderSettingsTab']);
+        add_action('woocommerce_update_options_licensed_product', [$this, 'saveSettings']);
+    }
+
+    /**
+     * Add settings tab to WooCommerce settings
+     */
+    public function addSettingsTab(array $tabs): array
+    {
+        $tabs['licensed_product'] = __('Licensed Products', 'wc-licensed-product');
+        return $tabs;
+    }
+
+    /**
+     * Get settings fields
+     */
+    public function getSettingsFields(): array
+    {
+        return [
+            'section_title' => [
+                'name' => __('Default License Settings', 'wc-licensed-product'),
+                'type' => 'title',
+                'desc' => __('These settings serve as defaults for new licensed products. Individual product settings override these defaults.', 'wc-licensed-product'),
+                'id' => 'wc_licensed_product_section_defaults',
+            ],
+            'default_max_activations' => [
+                'name' => __('Default Max Activations', 'wc-licensed-product'),
+                'type' => 'number',
+                'desc' => __('Default maximum number of domain activations per license.', 'wc-licensed-product'),
+                'id' => 'wc_licensed_product_default_max_activations',
+                'default' => '1',
+                'custom_attributes' => [
+                    'min' => '1',
+                    'step' => '1',
+                ],
+            ],
+            'default_validity_days' => [
+                'name' => __('Default License Validity (Days)', 'wc-licensed-product'),
+                'type' => 'number',
+                'desc' => __('Default number of days a license is valid. Leave empty or set to 0 for lifetime licenses.', 'wc-licensed-product'),
+                'id' => 'wc_licensed_product_default_validity_days',
+                'default' => '',
+                'placeholder' => __('Lifetime', 'wc-licensed-product'),
+                'custom_attributes' => [
+                    'min' => '0',
+                    'step' => '1',
+                ],
+            ],
+            'default_bind_to_version' => [
+                'name' => __('Default Bind to Major Version', 'wc-licensed-product'),
+                'type' => 'checkbox',
+                'desc' => __('If enabled, licenses are bound to the major version at purchase time by default.', 'wc-licensed-product'),
+                'id' => 'wc_licensed_product_default_bind_to_version',
+                'default' => 'no',
+            ],
+            'section_end' => [
+                'type' => 'sectionend',
+                'id' => 'wc_licensed_product_section_defaults_end',
+            ],
+        ];
+    }
+
+    /**
+     * Render settings tab content
+     */
+    public function renderSettingsTab(): void
+    {
+        woocommerce_admin_fields($this->getSettingsFields());
+    }
+
+    /**
+     * Save settings
+     */
+    public function saveSettings(): void
+    {
+        woocommerce_update_options($this->getSettingsFields());
+    }
+
+    /**
+     * Get default max activations
+     */
+    public static function getDefaultMaxActivations(): int
+    {
+        $value = get_option('wc_licensed_product_default_max_activations', 1);
+        return max(1, (int) $value);
+    }
+
+    /**
+     * Get default validity days
+     */
+    public static function getDefaultValidityDays(): ?int
+    {
+        $value = get_option('wc_licensed_product_default_validity_days', '');
+        if ($value === '' || $value === '0') {
+            return null;
+        }
+        return (int) $value;
+    }
+
+    /**
+     * Get default bind to version setting
+     */
+    public static function getDefaultBindToVersion(): bool
+    {
+        return get_option('wc_licensed_product_default_bind_to_version', 'no') === 'yes';
+    }
+}