refactor: implement component-based architecture for enhanced maintainability

- Reorganize directory structure into core/, features/, and themes/
- Colocate application Nix logic, configs, scripts, and theme overrides
- Implement 'Inversion of Control' for theming: apps now pull theme-specific layouts
- Update flake.nix and shared library paths to match the new structure
- Document the new Feature-Centric architecture in README.md

core/home/options.nix

@@ -0,0 +1,104 @@
+{ lib, pkgs, ... }:
+
+{
+  options.nomarchy = {
+    toggles = {
+      suspend = lib.mkOption {
+        type = lib.types.bool;
+        default = true;
+        description = "Whether to show suspend in system menu.";
+      };
+      screensaver = lib.mkOption {
+        type = lib.types.bool;
+        default = true;
+        description = "Whether the screensaver is enabled.";
+      };
+      idle = lib.mkOption {
+        type = lib.types.bool;
+        default = true;
+        description = "Whether the idle lock is enabled.";
+      };
+      nightlight = lib.mkOption {
+        type = lib.types.bool;
+        default = false;
+        description = "Whether the nightlight is enabled.";
+      };
+      waybar = lib.mkOption {
+        type = lib.types.bool;
+        default = true;
+        description = "Whether the top bar is enabled.";
+      };
+      skipVsCodeTheme = lib.mkOption {
+        type = lib.types.bool;
+        default = false;
+        description = "Whether to skip theme changes in VSCode.";
+      };
+    };
+    nightlightTemperature = lib.mkOption {
+      type = lib.types.int;
+      default = 4000;
+      description = "Temperature for the nightlight.";
+    };
+    theme = lib.mkOption {
+      type = lib.types.str;
+      default = "nord";
+      description = "System theme name.";
+    };
+    wallpaper = lib.mkOption {
+      type = lib.types.str;
+      default = "";
+      description = "System wallpaper path.";
+    };
+    hyprland = {
+      gaps_in = lib.mkOption {
+        type = lib.types.int;
+        default = 5;
+        description = "Inner gaps for Hyprland.";
+      };
+      gaps_out = lib.mkOption {
+        type = lib.types.int;
+        default = 10;
+        description = "Outer gaps for Hyprland.";
+      };
+      border_size = lib.mkOption {
+        type = lib.types.int;
+        default = 2;
+        description = "Border size for Hyprland.";
+      };
+    };
+    fonts = {
+      monospace = lib.mkOption {
+        type = lib.types.str;
+        default = "JetBrainsMono Nerd Font";
+        description = "System monospace font.";
+      };
+    };
+    iconsTheme = lib.mkOption {
+      type = lib.types.str;
+      default = "Yaru-blue";
+      description = "System icon theme name.";
+    };
+    isLightMode = lib.mkOption {
+      type = lib.types.bool;
+      default = false;
+      description = "Whether the current theme is light mode.";
+    };
+    cursor = {
+      name = lib.mkOption {
+        type = lib.types.str;
+        default = "Bibata-Modern-Ice";
+        description = "Mouse cursor theme name.";
+      };
+      package = lib.mkOption {
+        type = lib.types.package;
+        default = pkgs.bibata-cursors;
+        description = "Package providing the cursor theme.";
+      };
+    };
+    configOverrides = lib.mkOption {
+      type = lib.types.nullOr lib.types.path;
+      default = null;
+      description = "Path to a directory containing configuration overrides.";
+    };
+  };
+}