Release v1.0.6-rc12

Fix: WordPress Image Upload Blocking Issue

Problem

WordPress Media Library image uploads (JPG, PNG, WEBP) were being blocked by the UtilitySign plugin's file upload validation.

Root Cause

The plugin was applying file upload validation globally to ALL WordPress uploads, not just UtilitySign-specific uploads.

Solution

• Scoped file upload validation to UtilitySign-specific uploads only
• Standard WordPress uploads (Media Library, post/page editor) now bypass validation
• Enhanced validation with WordPress best practices

Changes

• ✅ Fixed file upload validation scoping
• ✅ Enhanced context detection using WordPress functions (wp_doing_rest_api, wp_doing_ajax)
• ✅ Improved MIME type validation (wp_check_filetype_and_ext)
• ✅ Added comprehensive input validation and error handling
• ✅ Implemented null safety and edge case handling

Testing

• ✅ Image uploads tested in Media Library (JPG, PNG, WEBP)
• ✅ Post/page editor image uploads verified
• ✅ UtilitySign functionality preserved
• ✅ Debug log reviewed - no errors found

Files Changed

• wp-plugin/utilitysign/includes/Core/SecurityService.php - Enhanced validate_file_upload method

Documentation

• wp-plugin/URGENT_FIX_IMAGE_UPLOAD_BLOCKING.md
• wp-plugin/DEBUG_LOG_REVIEW_AND_IMPROVEMENTS.md