Fix interactive prompts silently failing when installed via bash <(curl ...)

[Copilot]

When running bash <(curl -L .../curl-install.sh), stdin can end up bound to the process substitution pipe rather than the terminal (notably on macOS with bash 3.2). Any read or select call immediately receives EOF, so the OS selection prompt appears but user input is ignored — empty input falls to the * default case ("Exit") and installation cancels.

Changes

• scripts/curl-install.sh — before exec-ing install.sh, redirect stdin from /dev/tty if it is not already a TTY:

  if [ -t 0 ]; then
      exec ./install.sh
  else
      exec ./install.sh < /dev/tty
  fi

• scripts/install.sh — defensive early guard that reconnects stdin to /dev/tty for any invocation path where stdin is not a terminal:

  if [ ! -t 0 ] && [ -c /dev/tty ]; then
      exec < /dev/tty
  fi

---

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.