refactor: major architectural restructure for theme-centric organization

Theme System:
- Move all theme app configs to apps/ subdirectory (20 themes)
- Add theme-loader.nix for dynamic theme config deployment
- Simplify stylix.nix to focus on base theming only

Override System:
- Add overrides.nix for file-based config overrides
- Add behavior-configs.nix for non-visual configuration
- Split hypr/nomarchy.conf into behavior vs visual sections

Module Improvements:
- Add lib.mkDefault to all customizable settings
- Add modules/lib/ with shared utilities and state schema
- Update all home and system modules for downstream overridability

Installer:
- New minimal TTY installer (installer/install.sh)
- Golden path: BTRFS + LUKS2 (disko-golden.nix)
- New installer-iso.nix for TTY-only installation
- Keep graphical installer as installerIsoGraphical option

Cleanup:
- Remove obsolete install.sh, disko-ext4.nix, install-nomarchy.sh
- Update live-iso.nix references
- Add .claude/ to .gitignore for local IDE settings

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

modules/home/default.nix

@@ -1,10 +1,10 @@
 { config, pkgs, inputs, lib, ... }:
 
 let
-  palettes = import ../../assets/themes/nomarchy-palettes.nix;
+  nomarchyLib = import ../lib { inherit lib; };
   userPackagesFile = "${config.home.homeDirectory}/.config/home-manager/user-packages.json";
-  userPackages = if builtins.pathExists userPackagesFile then 
-    let 
+  userPackages = if builtins.pathExists userPackagesFile then
+    let
       pkgNames = builtins.fromJSON (builtins.readFile userPackagesFile);
       # Filter to only packages that exist in pkgs to prevent build failures
       validPkgs = builtins.filter (name: builtins.hasAttr name pkgs) pkgNames;
@@ -17,6 +17,9 @@ in
     inputs.walker.homeManagerModules.default
     ./options.nix
     ./state.nix
+    ./overrides.nix
+    ./behavior-configs.nix
+    ./theme-loader.nix
     ./theme-files.nix
     ./fonts.nix
     ./alacritty.nix
@@ -35,30 +38,47 @@ in
     ./bash.nix
   ];
 
-  colorScheme = lib.mkDefault (palettes.${config.nomarchy.theme} or palettes.nord);
+  colorScheme = lib.mkDefault (nomarchyLib.getColorScheme config.nomarchy.theme);
 
   home.packages = lib.mkDefault (with pkgs; [
+    # Core applications
     firefox
     xfce.thunar
-    imv
-    mpv
     neovim
+
+    # Media
+    imv              # Image viewer
+    mpv              # Video player
+
+    # Hyprland ecosystem
+    swww             # Wallpaper daemon
+    mako             # Notification daemon
+    hyprlock         # Lock screen
+
+    # Screenshot and clipboard
     wl-clipboard
     grim
     slurp
+
+    # Hardware control
     brightnessctl
     playerctl
     pamixer
-    mise
+
+    # Utilities
     jq
     xmlstarlet
+    mise
+    gum              # TUI components for scripts
+
+    # Theming
     yaru-theme
     bibata-cursors
+
+    # Fonts
     nerd-fonts.jetbrains-mono
     nerd-fonts.roboto-mono
     nerd-fonts.fira-code
     nerd-fonts.ubuntu-mono
   ] ++ userPackages);
-
-  # Shell aliases are now managed in bash.nix
 }