• Fixed README banner image accessibility - Changed banner image URL from GitHub blob to GitHub Pages to ensure visibility for non-logged-in users.
• Fixed memory exhaustion on PHP 7.4 - Export batch size calculation now caps batch size more conservatively for PHP 7.x and low-memory environments (≤256MB), preventing memory exhaustion during first export with custom fields.

• Taxonomy optimization for unchanged terms - Import now skips wp_set_post_terms() calls when taxonomy terms are unchanged, significantly reducing processing time for update-heavy imports.
• Increased default batch size - Default import batch size increased from 100 to 500 rows, reducing AJAX overhead for large imports.
• Configurable batch size limit - New fe_csv_import_export_import_max_batch_size filter allows per-site customization of the maximum batch size.
• Detailed import profiling - Added granular profiling for import phases (preload, row context, row processor, meta/taxonomy preparation and application) with WP_DEBUG batch profile logging.

• Fixed JavaScript ES module import syntax - Removed static ES module imports from main JS file to resolve browser syntax errors.

• Bundled JavaScript files - Bundled JavaScript files to reduce HTTP requests and improve page load performance.
• Updated export batch planner - Updated export batch planner to use memory_limit for dynamic batch size calculation.

• Removed load_plugin_textdomain() as WordPress 4.6+ handles text domain loading automatically.
• Renamed image files to remove special characters for WordPress.org compliance.
• Updated image references in PHP and CSS files.
• Added README.md to .gitattributes export-ignore for release ZIP.
• Refactored uninstall.php to use WordPress API instead of direct database calls.
• Removed hidden files (.DS_Store, .eslintignore, .prettierignore) from distribution.

• Maintenance release for the latest public package.

• Lower memory usage for large imports - Import batches now read CSV data incrementally and reuse cached file offsets instead of keeping full CSV content in memory.
• Reduced duplicate CSV parsing - Batch processing reuses parsed row data within the same batch to cut repeated parsing overhead.
• Improved batch diagnostics - Import profiling logs now make it easier to identify time and memory hotspots while debugging large imports.

• RFC 4180-aligned CSV parsing - Core str_getcsv() usage now disables backslash escaping so quoted fields are interpreted more predictably.
• Import log stability improvements - Import log tabs initialize more reliably, recent logs remain available at completion, and error logs stay aligned with error counts.
• Safer log cleanup behavior - UI log clearing now targets the current import panels more precisely.

• Branch-aware release script - test-release.sh can build a release ZIP from the current branch or an explicitly provided branch.
• Automatic artifact cleanup - Temporary test-release output and generated minified assets are removed after local release builds.
• Cleaner repository state - Generated release artifacts and minified distribution files are no longer expected to remain tracked in Git.

• Interface-based import system - New base classes and WP-compatible implementations
• Enhanced taxonomy handling - Dedicated taxonomy writer interface and utilities
• Object-type PHPDoc - IDE compatibility improvements with generic object types
• Modular JavaScript architecture - Organized export modules with 6 separate files

• Environment setup guide - Comprehensive direnv + wp-config.php integration documentation
• PHPUnit configuration fix - Local development testing now works out of the box
• Enhanced developer documentation - Updated skills/ directory with latest patterns
• Build process improvements - Streamlined npm scripts and development workflow

• Complete hooks reference - Updated for current implementation with new import hooks
• Environment setup conventions - New guide for AI feature development and API key management
• Troubleshooting guides - Updated for current architecture and common issues
• Coding standards refresh - Object-type PHPDoc guidelines and modern practices

• WordPress 6.6+ compatibility - Updated minimum requirements and tested compatibility
• PHP 8.1+ optimization - Modern PHP features and performance improvements
• Enhanced error handling - Better cleanup on error paths and exception management
• Improved logging system - Transient-based log storage with configurable limits

• ACF references removed - Documentation updated to use "enhanced features" terminology
• PHPUnit bootstrap path - Fixed for local development (may require configuration update)
• Hook signature updates - Some import hooks have updated parameters for better extensibility

• Progress bar UI overhaul - Complete redesign with beautiful shimmer animations
• Real-time export details - 1-by-1 processing status with post titles
• Enhanced license detection - Accurate status detection for 3 different scenarios
• Complete Japanese localization - Full translation support with proper HTML rendering

• Shimmer animations - 6 different animation patterns (standard, reverse, alternate, pulse, fast, slow)
• Progress tracking - Accurate 1% increment updates during processing
• Visual feedback - Processing state with animated gradients, completed state with green color
• Consistent experience - Unified UI between import and export operations

• Complete Japanese translation - All interface elements translated to natural Japanese
• HTML tag rendering - Proper <code> tag display for technical documentation
• Natural terminology - 'All statuses' instead of 'All posts' for better clarity
• Context-aware messaging - Different messages for different license states

• Export batch size fix - Correctly respects export limits instead of total post count
• License status detection - Distinguishes between not installed, inactive, and server unconfigured
• Error handling - Enhanced error messages and state management
• Code cleanup - Removed all debug code for clean production build

• Detailed processing display - Shows individual post titles during export/import
• Natural Japanese messaging - User-friendly messages in proper Japanese
• Visual progress indicators - Beautiful animations and color transitions
• Intuitive operation flow - Clear next-step instructions for each scenario

• Asset management - Updated .gitattributes with correct file names
• Build system - Proper minified asset inclusion for distribution
• Version requirements - Updated to WordPress 6.0+ and PHP 8.0+
• Documentation - Updated README and changelog with latest features

• Progress bar completion - Fixed import progress bar not turning green on completion
• Button state management - Fixed export button text inconsistency after completion
• Message display - Fixed undefined messages in license handling
• Translation rendering - Fixed HTML tag display in translated strings

• Import refactoring - Split responsibilities into utility classes for better maintainability

• Release cleanup - Removed unconditional server/client debug logs for normal usage

• Code cleanup and optimization - Removed duplicate code and unnecessary comments across all PHP files
• Debug logging system - Added comprehensive debug logging with [FE CSV Import & Export] prefix for better troubleshooting
• JavaScript debugging - Implemented conditional debug logging in admin scripts based on WP_DEBUG
• Documentation improvements - Updated SKILL.md with troubleshooting knowledge base
• Build system enhancements - Improved GitHub Actions workflows for better automation

• CSS optimization issues - Fixed design breaks caused by aggressive CSS cleanup
• File naming consistency - Updated references to use correct JavaScript file names
• Translation file cleanup - Removed outdated translation JSON files

• Removed duplicate functions - Cleaned up redundant PHP functions and CSS rules
• Code standardization - Applied consistent coding standards across all files
• Documentation updates - Ensured all documentation reflects current implementation

• Environment setup improvements - Enhanced direnv configuration for better development experience
• Debug logging enhancements - Improved debug output with consistent formatting
• Build process optimization - Streamlined npm build scripts

• Development environment - Better WP-CLI compatibility and database connection handling
• Error handling - Enhanced error messages and debugging information
• Code quality - Improved code organization and maintainability

• WP-CLI connection issues - Fixed database variable quoting problems
• Environment variable handling - Resolved path issues with spaces in directory names

• AJAX import/export system - Complete rewrite with modern AJAX handling
• Real-time progress tracking - Dynamic progress bars for large file processing
• Enhanced error handling - Better error reporting and user feedback
• WordPress coding standards - Full compliance with WPCS

• Performance optimization - Chunked processing for large CSV files
• User interface - Modern responsive design with better UX
• Memory management - Optimized memory usage for large datasets
• Internationalization - Complete Japanese translation support

• ACF field export - Fixed empty ACF columns in exported CSV
• JavaScript progress elements - Resolved DOM selector issues after UI refactor
• Date formatting - Fixed filename date format bug
• AJAX response format - Added proper success flag for WordPress compatibility

• Multi-value custom fields support - Import/export multiple values using pipe separator (e.g., "value1|value2|value3")
• WordPress coding standards compliance - Applied WPCS to exporter class

• Backward compatible with single-value custom fields
• Automatic empty value filtering in multi-value processing
• Updated documentation with usage examples
• Enhanced code quality and maintainability

• Docsify-based documentation system
• Automatic API documentation generation
• GitHub Pages deployment support

• CSV processing performance improvements
• Memory usage optimization
• Enhanced error handling

• Memory leak fix for large file processing
• Japanese character encoding issue fix

• Batch processing functionality
• Custom field support
• Export functionality

For complete changelog, see GitHub repository.