Reset Windows tooling setup to use Scoop

[Copilot]

The repo’s WinGet-based setup could leave freshly installed tools unavailable because binaries were installed outside the active PATH. This rebuilds the project scaffold around Scoop so CLI tools are installed through user-local shims.

• Scoop-first bootstrap

  • Replaced WinGet install flow with Scoop installation and PATH refresh helpers.
  • Installs Git, PowerShell 7, and just through Scoop before setup handoff.

• Declarative package config

  • Replaced config/packages.json with config/scoop.json.
  • Defines buckets and packages used by setup.ps1.

• Fresh minimal scaffold

  • Removed old WinGet docs, assets, submodule wiring, and split PowerShell scaffold.
  • Added lean setup/uninstall scripts for packages, symlinks, and PowerShell modules.

• Updated docs and task runner

  • README now documents the Scoop workflow and command entry points.
  • Justfile now targets the new setup/check commands.

Example package declaration:

{
  "buckets": ["main", "extras", "nerd-fonts"],
  "packages": ["git", "pwsh", "just", "ripgrep", "fd", "neovim"]
}