Improve Windows Python install guidance

Author: mbv06

install-windows.ps1

@@ -213,12 +213,27 @@ function Main {
     Log 'Checking Python 3.11+'
     $python = Find-Python
     if (-not $python) {
+        $winget = Get-Command 'winget' -ErrorAction SilentlyContinue |
+                  Select-Object -ExpandProperty Source -ErrorAction SilentlyContinue
+        if ($winget) {
+            Die @"
+Python $MinMajor.$MinMinor+ was not found.
+
+Install Python by running:
+
+  winget install Python.Python.3.14
+
+Then open a new terminal window and run this installer again.
+"@
+        }
+
         Die @"
 Python $MinMajor.$MinMinor+ was not found.
 
-Install Python from https://www.python.org/downloads/windows/
-Make sure to check "Add python.exe to PATH" during installation,
-then run this installer again.
+Install Python from:
+  https://www.python.org/downloads/windows/
+
+Then open a new terminal window and run this installer again.
 "@
     }
     Write-Host "Using Python: $python"