New nomarchy-installed-summary script renders a markdown table via
gum format with the install shape the user should verify before they
start customising:
- theme / font / panel position (~/.config/nomarchy/state.json)
- timezone / DNS / hybrid GPU (/etc/nixos/state.json)
- form factor (BAT* sysfs presence)
- software profiles (presence of marker packages)
- FDE (any crypt entry in lsblk)
- drives (lsblk filtered to disk/part/crypt)
nomarchy-welcome calls it as Step 0 — before the theme/font/panel
pickers — and gates progression on a gum input prompt so the user has
to acknowledge before customisation rewrites anything. The script is
also callable standalone from any terminal: `nomarchy-installed-summary`.
Self-contained — no installer-side changes. Software profiles are
detected heuristically (the installer bakes the user's pick into the
generated home.nix as concrete home.packages rather than persisting a
profile list), which is good enough for verification but won't catch
manually-removed profile packages. gum is in the existing categoryDeps
so no new tools are needed; falls back to plain markdown when gum
isn't on PATH (recovery contexts).
Closes the "Installer: What's installed? summary on first boot"
Now-column item from Pillar 4.
