Dashboard widget improvements and download counter feature (v0.3.7)

- Fixed: Dashboard widget "View All Licenses" link used wrong page slug
- Fixed: Download links in customer account resulted in 404 errors
- Removed: Redundant "Status Breakdown" section from dashboard widget
- Changed: License Types section now uses card style layout
- Added: Download counter for licensed product versions
- Added: Download Statistics admin dashboard widget
- Updated translations (356 strings)

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

src/Installer.php

@@ -35,8 +35,9 @@ final class Installer
         // Set version in options
         update_option('wc_licensed_product_version', WC_LICENSED_PRODUCT_VERSION);
 
-        // Register the licenses endpoint before flushing rewrite rules
+        // Register endpoints before flushing rewrite rules
         add_rewrite_endpoint('licenses', EP_ROOT | EP_PAGES);
+        add_rewrite_endpoint('license-download', EP_ROOT | EP_PAGES);
 
         // Flush rewrite rules for REST API and My Account endpoints
         flush_rewrite_rules();
@@ -103,6 +104,7 @@ final class Installer
             download_url VARCHAR(512) DEFAULT NULL,
             attachment_id BIGINT UNSIGNED DEFAULT NULL,
             file_hash VARCHAR(64) DEFAULT NULL,
+            download_count BIGINT UNSIGNED NOT NULL DEFAULT 0,
             is_active TINYINT(1) NOT NULL DEFAULT 1,
             released_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
             created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,