Version 0.5.0 - Major code refactoring Broke down monolithic editor.js into focused, maintainable modules: - vtt-utils.js: VTT/subtitle utility functions - timeline-renderer.js: Quality timeline rendering - subtitle-list-renderer.js: Subtitle list rendering - video-controls.js: Video playback controls and setup - editor-actions.js: API action functions - editor-insert-modal.js: Insert segment modal - editor-manual-edit-modal.js: Manual VTT edit modal - editor-reset-modal.js: Reset segment modal - editor-gitlab-push-modal.js: GitLab push modal Reduced editor.js from 1614 to ~715 lines (56% reduction) Improved separation of concerns and code maintainability