Paste: enable CSI ? 2004 mode, parse ESC[200~...ESC[201~ into one
TuiPaste event routed to the focused panel, literal body, over-cap
pastes dropped whole. TextBox inserts with CR/CRLF normalized,
Terminal queues bytes to the pty, unmarked CRLF coalesces to one
Enter, idle flush no longer shreds slow pastes.
Complete: new TuiAutocomplete popup owned by TuiTextBox via
complete=, typing filters, arrows move, Enter accepts, Esc
dismisses. tui_complete_command feeds COMMANDS with HELP_TEXT
descriptions. Demo prompt dialog wired as the showcase.
retoor