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/nightlight.nix

@@ -1,11 +1,7 @@
-{ config, pkgs, ... }:
+{ config, ... }:
 
 let
-  stateFile = "${config.home.homeDirectory}/.config/home-manager/hyprsunset-state.json";
-  hyprsunsetState = if builtins.pathExists stateFile then 
-    builtins.fromJSON (builtins.readFile stateFile)
-  else { enabled = false; temperature = 4000; };
-  temp = toString (if hyprsunsetState.enabled then hyprsunsetState.temperature else 6500);
+  temp = toString (if config.nomarchy.toggles.nightlight then config.nomarchy.nightlightTemperature else 6500);
 in
 {
   services.hyprsunset = {