Security: Improved escaping and sanitization across several admin outputs and request-handling areas.

Fixed: Failed save messages are now visibly shown in the UI.

Fixed: Corrected missing and incorrect text domains.

Fixed: Corrected multiple typos throughout the extension.

Added: One Dark editor theme for improved code editor readability.

Added: Code folding UI and fold keymap support.

Added: Autocompletion and automatic bracket closing in the code editor.

Added: Natural Tab indentation support in the code editor.

Added: PHP pre-save syntax validation to help catch common syntax errors before saving snippets.

Added: Validation to reject PHP opening and closing tags in snippets.

Added: Safer raw snippet storage handling with per-snippet storage flags to preserve existing saved snippets.

Updated: CodeMirror library to version 6.

Updated: PHP editor mode now uses plain PHP mode for tagless snippets.

Updated: AJAX save responses now use wp_send_json_success() and wp_send_json_error() for improved WordPress compatibility.

Updated: Custom JS snippets now load only on MainWP pages, matching the existing Custom CSS behavior.

Updated: Save handling now supports both WordPress JSON responses and the previous legacy success format.