AltGr-composed special characters (@ # [ ] { }) not received by input box on Windows, Italian keyboard layout

[Danipon]

Environment: Windows 11, Windows Terminal, dirge 0.19.4, Italian keyboard layout

Repro: In the dirge TUI input box, typing any AltGr-composed character (@, #, [, ], {, }) produces nothing. Pasting text containing any of these characters also fails to insert them — plain ASCII text pastes correctly. The same characters type and paste correctly at a plain shell prompt in the same terminal window, ruling out a terminal-level issue.

Impact: makes @-file-reference and any code/text containing these characters unusable to enter.