feat(core): migrate system state to unified declarative JSON

- Consolidate all configuration toggles (suspend, idle, waybar, etc.) into ~/.config/home-manager/state.json
- Introduce nomarchy.toggles and nomarchy.hyprland options in Nix
- Inject toggle states into all bin/ scripts via environment variables
- Update toggle scripts to mutate JSON and trigger background rebuilds
- Add a migration script to transition legacy flag files to the new format

modules/home/stylix.nix

@@ -4,14 +4,9 @@ let
   # Re-use our state-based logic
   palettes = import ../../themes/nomarchy-palettes.nix;
   
-  themeStateFile = "${config.home.homeDirectory}/.config/home-manager/theme-state.nix";
-  activeThemeName = if builtins.pathExists themeStateFile then 
-    lib.removeSuffix "\n" (builtins.readFile themeStateFile) 
-  else "nord";
-
-  wallpaperStateFile = "${config.home.homeDirectory}/.config/home-manager/wallpaper-state.nix";
-  activeWallpaper = if builtins.pathExists wallpaperStateFile then 
-    lib.removeSuffix "\n" (builtins.readFile wallpaperStateFile) 
+  activeThemeName = config.nomarchy.theme;
+  activeWallpaper = if config.nomarchy.wallpaper != "" then 
+    config.nomarchy.wallpaper 
   else "${../../themes/catppuccin/backgrounds/1-totoro.png}"; # Fallback
 
   # Map nix-colors palette to a format Stylix expects (attrset of hex strings)