v0.8.0: fix tui command stty failure handling with set -e

Add || true after stty commands so set -e doesn't kill the script
when stdin is not a terminal.

passepartout

@@ -384,15 +384,15 @@ case "$COMMAND" in
         fi
         # Restore terminal on any exit (set -e can kill the script before the
         # explicit stty restore below if sbcl exits non-zero).
-        cleanup() { stty icanon echo ixon 2>/dev/null; }
+        cleanup() { stty icanon echo ixon 2>/dev/null || true; }
         trap cleanup EXIT
         # Capture terminal dimensions in non-standard env vars
         # (SBCL strips COLUMNS/LINES but leaves MY_* alone).
-        ts=$(stty size 2>/dev/null)
+        ts=$(stty size 2>/dev/null) || true
         export MY_TERM_ROWS="${ts%% *}" MY_TERM_COLS="${ts##* }"
         # Set character-at-a-time mode BEFORE SBCL starts
         # (uiop:run-program inside SBCL can't access the terminal)
-        stty -icanon -echo -ixon 2>/dev/null
+        stty -icanon -echo -ixon 2>/dev/null || true
         # Ensure COLORTERM is set for modern backend detection
         export COLORTERM="${COLORTERM:-truecolor}"
         # Clear stale cache