feat(installer): add software-profile multi-select

- Add select_profiles step with gum choose --no-limit
- Implement state persistence and review for selected profiles
- Map profiles to home.packages and system-level toggles (Docker, Steam)
- Update generate_flake_config to emit profile-specific Nix snippets
- Fix duplicate environment.systemPackages in virtualization.nix
- Update ROADMAP.md

docs/ROADMAP.md

@@ -19,7 +19,6 @@ Guardrails (apply when adding anything):
 
 ### Now (ready to pick up)
 
-- **Software-profile multi-select in the installer.** Carryover from the old TODO. Add a `gum choose --no-limit` step in `installer/install.sh` (between hardware and impermanence) for opt-in profiles (Dev, Gaming, Office, Media, …). Each profile maps to a list of `home.packages` and optional `nomarchy.system.*` toggles emitted into the generated `home.nix`/`system.nix`.
 - **Form-factor → laptop preset auto-enable.** When the installer writes `nomarchy.system.formFactor = "laptop"`, also flip on a yet-to-be-built laptop preset (TLP, brightness keys, lid handling). The option exists; the preset module doesn't.
 
 ### Next (bigger lifts that build on Now)
@@ -127,6 +126,7 @@ Each PR description should reference the row(s) in `docs/SCRIPTS.md` it closes,
 
 (Move items here when they land — keep them brief, link the commit/PR.)
 
+- _2026-04-25_ — Software-profile multi-select in the installer. Users can now pick Dev, Gaming, Office, Media, and CLI Utils profiles during install; logic emits corresponding `home.packages` and system toggles into the generated config.
 - _2026-04-25_ — Pillar 3 Phase B: script & menu audit. Ported/implemented/stubbed ~40 scripts including `nomarchy-version`, `nomarchy-debug`, `nomarchy-reinstall`, `nomarchy-rollback`, `nomarchy-update-firmware`, `nomarchy-pkg-*`, and `nomarchy-theme-*` wrappers. Moved desktop scripts to packaged utility directory.
 - _2026-04-25_ — Docker & fwupd support. Added `nomarchy.system.virtualization.docker.enable` and `nomarchy.hardware.fwupd` options. Wires system services and adds `docker-compose` and `fwupdmgr` to PATH.
 - _2026-04-25_ — Installer VM testing. Added `installerVm` to flake nixosConfigurations, packages, and apps. `nomarchy-test-installer` now uses `nix run .#installerVm`.