Portable installation for windows needed

This is especially important for being able to use the software on computers where you can't install softwaree like the office or a public space like a library. These re the times that security can be the most important but the hardest to implement.

The issue names no files, tests, or entry points, and only requests portable installation on Windows for computers where software cannot be installed. First clarify the supported portable workflow, security constraints, and affected installer or client components; done would mean a documented and working portable Windows distribution.

Written by the indexing model from the issue text.