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-idle

@@ -1,28 +1,27 @@
 #!/usr/bin/env bash
 
 # Toggles the idle daemon (hypridle) between enabled and disabled.
-# Declarative + Hybrid (instant IPC/kill) for Nomarchy NixOS.
+# Hybrid: updates state.json and provides instant feedback.
 
-STATE_FILE="$HOME/.config/home-manager/idle-state.json"
+STATE_FILE="$HOME/.config/home-manager/state.json"
 mkdir -p "$(dirname "$STATE_FILE")"
 
-if [ ! -f "$STATE_FILE" ]; then
-    echo '{"enabled": true}' > "$STATE_FILE"
-fi
+# Initialize if doesn't exist
+[[ ! -f $STATE_FILE ]] && echo "{}" > "$STATE_FILE"
 
-enabled=$(jq -r '.enabled' "$STATE_FILE")
-
-if [[ $enabled == "true" ]]; then
-    NEW_ENABLED="false"
-    pkill -x hypridle
-    notify-send -u low "󱫖  Stop locking computer when idle"
-else
-    NEW_ENABLED="true"
+if [[ $NOMARCHY_TOGGLE_IDLE == "false" ]]; then
+    NEW_VALUE="true"
     setsid hypridle >/dev/null 2>&1 &
     notify-send -u low "󱫖  Now locking computer when idle"
+else
+    NEW_VALUE="false"
+    pkill -x hypridle
+    notify-send -u low "󱫖  Stop locking computer when idle"
 fi
 
-echo "{\"enabled\": $NEW_ENABLED}" > "$STATE_FILE"
-echo "Idle daemon set to $NEW_ENABLED declaratively."
+TMP_JSON=$(mktemp)
+jq ".idle = $NEW_VALUE" "$STATE_FILE" > "$TMP_JSON" && mv "$TMP_JSON" "$STATE_FILE"
+
+echo "Idle state set to $NEW_VALUE. Environment will be fully updated on next rebuild."
 
 pkill -RTMIN+9 waybar # Signal waybar if needed