Major improvements: Fix download limits, enhance license display, fix software filenames

🔧 Bug Fixes:
- Fixed download limits defaulting to 5 instead of 0 for unlimited downloads
- Fixed software license filename sanitization (spaces→dashes, dots→underscores, proper .zip extension)
- Software downloads now show as "Test-Plugin-v2-2-0.zip" instead of "Test Plugin v2.2.0"

✨ UI/UX Enhancements:
- Redesigned license key display to span full table width with FontAwesome copy icons
- Added responsive CSS styling for license key rows
- Integrated FontAwesome CDN for modern copy icons

🏗️ Architecture Improvements:
- Added comprehensive filename sanitization in both download handler and API paths
- Enhanced software license product handling for local package files
- Improved error handling and logging throughout download processes

📦 Infrastructure:
- Added Gitea workflows for automated releases on push to main
- Created comprehensive .gitignore excluding test files and browser automation
- Updated documentation with all recent improvements and technical insights

🔍 Technical Details:
- Software license products served from wp-content/uploads/wpdd-packages/
- Download flow: token → process_download_by_token() → process_download() → deliver_file()
- Dual path coverage for both API downloads and regular file delivery
- Version placeholder system for automated deployment

🤖 Generated with [Claude Code](https://claude.ai/code)

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

assets/js/frontend.js

@@ -27,6 +27,9 @@ jQuery(document).ready(function($) {
             
             // Download status check
             $(document).on('click', '.wpdd-check-download', this.checkDownloadStatus);
+            
+            // Copy license key
+            $(document).on('click', '.wpdd-copy-license', this.copyLicenseKey);
         },
         
         initProductCards: function() {
@@ -358,6 +361,61 @@ jQuery(document).ready(function($) {
         
         formatPrice: function(price) {
             return '$' + parseFloat(price).toFixed(2);
+        },
+        
+        copyLicenseKey: function(e) {
+            e.preventDefault();
+            
+            var $button = $(this);
+            var licenseKey = $button.data('license');
+            
+            if (!licenseKey) {
+                WPDD.showNotice('No license key to copy', 'error');
+                return;
+            }
+            
+            // Try to use the modern clipboard API
+            if (navigator.clipboard && window.isSecureContext) {
+                navigator.clipboard.writeText(licenseKey).then(function() {
+                    WPDD.showNotice('License key copied to clipboard!', 'success');
+                    $button.text('Copied!');
+                    setTimeout(function() {
+                        $button.text('Copy');
+                    }, 2000);
+                }).catch(function() {
+                    WPDD.fallbackCopyTextToClipboard(licenseKey, $button);
+                });
+            } else {
+                WPDD.fallbackCopyTextToClipboard(licenseKey, $button);
+            }
+        },
+        
+        fallbackCopyTextToClipboard: function(text, $button) {
+            var textArea = document.createElement('textarea');
+            textArea.value = text;
+            textArea.style.position = 'fixed';
+            textArea.style.left = '-999999px';
+            textArea.style.top = '-999999px';
+            document.body.appendChild(textArea);
+            textArea.focus();
+            textArea.select();
+            
+            try {
+                var successful = document.execCommand('copy');
+                if (successful) {
+                    WPDD.showNotice('License key copied to clipboard!', 'success');
+                    $button.text('Copied!');
+                    setTimeout(function() {
+                        $button.text('Copy');
+                    }, 2000);
+                } else {
+                    WPDD.showNotice('Failed to copy license key', 'error');
+                }
+            } catch (err) {
+                WPDD.showNotice('Failed to copy license key', 'error');
+            }
+            
+            document.body.removeChild(textArea);
         }
     };