fix(iso): route kernel logs to tty2, keep tty1 clean for TUI

console=tty0 sent kernel messages to the active VT (tty1), overwriting
the TUI. Changed to console=tty2 so kernel logs land on a dedicated
console. tty1 is now clean; operator can press Alt+F2 to inspect kernel
messages and Alt+F3 for an extra shell.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

iso/overlay/etc/profile.d/bee.sh

@@ -17,4 +17,5 @@ if [ -z "${SSH_CONNECTION:-}" ] \
     && [ "$(tty 2>/dev/null)" = "/dev/tty1" ]; then
     echo "Bee live environment ready."
     echo "Run 'menu' to open the TUI."
+    echo "Kernel logs: Alt+F2  |  Extra shell: Alt+F3"
 fi