- Add visual feedback styling for search states (searching, success, fail)
- Show match count in status label when searching
- Add hide (X) button to hide search panel
- Fix typo: stateus_lbl → status_lbl
- Add _set_find_options_lbl to display active search options
- Moved plugins to apropriate sub folders
- Refactor command system with new add_command method and rename GetCommandSystemEvent to GetNewCommandSystemEvent
- Add RegisterCommandEvent for dynamic command registration
- Change footer container orientation to VERTICAL
- Add search-highlight tag to source buffer
- Add file change detection (deleted, externally modified) in source_file
- Add JSON prettify option to source view popup menu
- Enable hexpand on VTE widget
- Update plugins_controller_mixin to use widget_registry
