Fixed
- D3TUI Public API completeness
- Complete missing cursor movement wrappers (up, down, forward,
backward, home, next_line, save, restore, visible)
- Complete missing attribute wrappers (set_attributes,
reset_attributes)
- Complete missing terminal config wrappers (set_dimensions,
get_dimensions, set_scrollback, set_word_wrap)
- Complete missing buffer/scroll wrappers (get_buffer, scroll_up,
scroll_down, page_up, page_down)
- Add fallback stub implementations for unimplemented terminal_core
functions