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

bin/nomarchy-toggle-waybar

@@ -1,7 +1,25 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
-if pgrep -x waybar >/dev/null; then
-  pkill -x waybar
+# Toggles the waybar top bar.
+# Hybrid: updates state.json and provides instant feedback.
+
+STATE_FILE="$HOME/.config/home-manager/state.json"
+mkdir -p "$(dirname "$STATE_FILE")"
+
+# Initialize if doesn't exist
+[[ ! -f $STATE_FILE ]] && echo "{}" > "$STATE_FILE"
+
+if [[ $NOMARCHY_TOGGLE_WAYBAR == "false" ]]; then
+    NEW_VALUE="true"
+    uwsm-app -- waybar >/dev/null 2>&1 &
+    notify-send -u low "󰍜  Top bar enabled"
 else
-  uwsm-app -- waybar >/dev/null 2>&1 &
+    NEW_VALUE="false"
+    pkill -x waybar
+    notify-send -u low "󰍜  Top bar disabled"
 fi
+
+TMP_JSON=$(mktemp)
+jq ".waybar = $NEW_VALUE" "$STATE_FILE" > "$TMP_JSON" && mv "$TMP_JSON" "$STATE_FILE"
+
+echo "Waybar state set to $NEW_VALUE. Environment will be fully updated on next rebuild."