menu_ask_value used line-oriented read -rp: a multiline Ctrl+V paste
flooded the tty queue, read consumed only the first line, and the rest
executed as commands later (or were eaten by a later prompt).
- lib/menu-lib.sh: new menu_read_value() raw-mode bracketed-paste
reader (stty -icanon -echo -isig, \e[?2004h/l, literal newlines inside
[200~..[201~, Enter submits outside paste, edit keys, cancel on
Ctrl-D-empty/Ctrl-C/Z/\, terminal restored via trap). Bytes via
dd|od|tr chunks, not bash read: read self-interrupts on ETX from a
tty even with ISIG disabled.
- bin/pos-ai-alias: prompt encode/decode (backslash, newline) with
load/save wiring; newline-safe truncate; edit wizard Enter keeps the
full original prompt (no more silent >80-char truncation).
Verified via pty harnesses: multiline + single-line paste captured
verbatim with nothing executed, Ctrl-D/Ctrl-C cancel cleanly, full
create/list/show/edit E2E, round-trips byte-exact. Gates: make gen &&
make check, make lint 0 FAIL 0 WARN.