fix: fully silent first-boot — no prompts, auto-reboot on completion

Removes all interactive prompts from install-kiosk.sh. Username fixed
to 'kiosk', display name fixed to 'Kiosk'. Reboots automatically after
setup without waiting for user input.

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

install-kiosk.sh

@@ -13,20 +13,9 @@ echo "   SeniorNet Kiosk — First-Boot Setup"
 echo "============================================"
 echo
 
-# ── Prompt for user details ────────────────────────────────────────
+# ── Fixed user details ─────────────────────────────────────────────
 KIOSK_USER="kiosk"
-
-while true; do
-  read -rp "Enter the senior's name (e.g. Mary Smith): " KIOSK_NAME
-  if [ -n "$KIOSK_NAME" ]; then break; fi
-  echo "  Name cannot be empty."
-done
-
-echo
-echo "  Name     : $KIOSK_NAME"
-echo
-read -rp "Proceed with setup? [Y/n] " CONFIRM
-if [[ "$CONFIRM" =~ ^[Nn] ]]; then echo "Aborted."; exit 1; fi
+KIOSK_NAME="Kiosk"
 echo
 
 # ── Paths ──────────────────────────────────────────────────────────
@@ -157,5 +146,4 @@ echo "   Setup complete!"
 echo "   Kiosk will start after reboot as: $KIOSK_NAME ($KIOSK_USER)"
 echo "============================================"
 echo
-read -rp "Press Enter to reboot..."
 reboot