feat(installer): improve Arch Linux support, dependency handling, and…

[Paraspandey-debugs]

Diff Summary

Added

• Arch Linux support:

  • pacman -Syu --noconfirm with dependencies (git, figlet, curl, wget, php, xdotool).
  • Safe AUR build and install process for boxes with temp directory and cleanup.

• Python virtual environment setup:

  • Creates .venv using python3 -m venv.
  • Activates venv before installing requirements.

• Improved error handling:

  • Consistent use of exit 1 instead of plain exit.
  • Internet connectivity check updated with fallback to github.com.

• Cleaner user messaging for installation steps and errors.

Changed

• Debian install block:

  • Added boxes to apt install.
  • Simplified installation flow.

• Arch install block:

  • Fixed incorrect pacman flags (-Suy -y → -Syu --noconfirm).
  • Replaced inline cd boxes with safer build and cleanup process.

• Script structure:

  • Consolidated redundant exit paths.
  • Reorganized dependency handling order.

Removed

• Duplicate sudo apt install figlet -y lines.
• Redundant or unreachable code in the installer block.