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/state.nix

@@ -0,0 +1,43 @@
+{ config, lib, ... }:
+
+let
+  stateDir = "${config.home.homeDirectory}/.config/home-manager";
+  
+  # Helper to read state from a file, with a default
+  readState = file: default:
+    if builtins.pathExists "${stateDir}/${file}" then
+      let 
+        content = builtins.readFile "${stateDir}/${file}";
+        cleanContent = lib.removeSuffix "\n" content;
+      in
+      if lib.hasSuffix ".json" file then
+        builtins.fromJSON cleanContent
+      else
+        cleanContent
+    else
+      default;
+
+  # Unified state reading
+  togglesState = readState "state.json" {};
+in
+{
+  config.nomarchy = {
+    toggles = {
+      suspend = togglesState.suspend or true;
+      screensaver = togglesState.screensaver or true;
+      idle = togglesState.idle or true;
+      nightlight = togglesState.nightlight or false;
+      waybar = togglesState.waybar or true;
+      skipVsCodeTheme = togglesState.skipVsCodeTheme or false;
+    };
+    nightlightTemperature = togglesState.nightlightTemperature or 4000;
+    theme = togglesState.theme or "nord";
+    wallpaper = togglesState.wallpaper or "";
+    hyprland = {
+      gaps_in = togglesState.hyprland.gaps_in or 5;
+      gaps_out = togglesState.hyprland.gaps_out or 10;
+      border_size = togglesState.hyprland.border_size or 2;
+    };
+    fonts.monospace = togglesState.font or "JetBrainsMono Nerd Font";
+  };
+}