fix(ui,tty,core): ISSUE #28 — enable alt-screen + app cursor keys; set raw/noecho+keypad/meta; robust ESC parsing (CSI/SS3) with tolerant cleanup; normalize ESCAPE_SEQUENCE_MAP (no \E, plus-style names, ;2..;8 modifiers); map Shift+Up/Down; correct Alt+I=up and Alt+K=down; preload CLI filename from argv[1] for unnamed buffers; mypy-friendly keybinding loader

Author: SSobol77