profiles groups for #486

[deadc0de6]

features for #486:

• profiles groups
• hidden profiles with _<profile-name>
• profiles description

profiles:
  # --- hidden meta profiles (leading underscore) ---
  _base:
    group: meta
    description: base set of dotfiles shared by all hosts
    dotfiles:
    - f_gitconfig
    - f_zshrc
  _zsh:
    group: meta
    description: zsh specific dotfiles
    dotfiles:
    - f_zshrc
  _ai:
    group: meta
    description: ai tooling config
    dotfiles:
    - f_ai_agents
  _hyprland:
    group: meta
    description: hyprland window manager config
    dotfiles:
    - f_hyprland_conf
  # --- host profiles (group hosts) ---
  archlinux:
    group: hosts
    description: arch linux workstation
    include:
    - _base
    - _hyprland
    dotfiles:
    - f_vimrc
  macosx:
    group: hosts
    description: macos laptop
    include:
    - _base
    - _ai
    dotfiles:
    - f_vimrc
  # --- hidden profile that belongs to no group ---
  _legacy:
    description: old experimental profile, kept for reference
    dotfiles:
    - f_vimrc
  # profile with no group at all: part of the unnamed top group,
  # displayed first without a group header
  laptop:
    description: personal laptop, not part of any group
    dotfiles:
    - f_zshrc
    - f_vimrc

ends up with

Available profile(s):
	-> laptop (2 dotfiles) - personal laptop, not part of any group
group "hosts":
	-> archlinux (4 dotfiles) - arch linux workstation
	-> macosx (4 dotfiles) - macos laptop

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.41%. Comparing base (ca41d69) to head (bb69dc7).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #487      +/-   ##
==========================================
+ Coverage   89.29%   89.41%   +0.11%     
==========================================
  Files          23       23              
  Lines        5026     5072      +46     
==========================================
+ Hits         4488     4535      +47     
+ Misses        538      537       -1     

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