chore: clearer messaging if dep missing

Author: goodroot

lib/src/cli_commands.py

@@ -18,11 +18,17 @@
     # Hard fail – rich is required for the CLI
     print("ERROR: python-rich is not available in this Python environment.", file=sys.stderr)
     print(f"ImportError: {e}", file=sys.stderr)
+    print(f"\nPython being used: {sys.executable}", file=sys.stderr)
+    print(f"Python version:    {sys.version.split()[0]}", file=sys.stderr)
+    print("\nThis usually means python-rich is installed for a different Python version.", file=sys.stderr)
+    print("The CLI requires system Python with distro packages installed.", file=sys.stderr)
     print("\nTry installing it using your package manager:", file=sys.stderr)
     print("  Arch:          pacman -S python-rich", file=sys.stderr)
     print("  Debian/Ubuntu: apt install python3-rich", file=sys.stderr)
     print("  Fedora:        dnf install python3-rich", file=sys.stderr)
     print("  Or via pip:    pip install rich>=13.0.0", file=sys.stderr)
+    print("\nIf using a Python version manager (pyenv, mise, asdf), ensure", file=sys.stderr)
+    print("python-rich is installed for your system Python (/usr/bin/python3).", file=sys.stderr)
     sys.exit(1)
 
 try: