feat: implement modular foundation and core system services

- Update flake.nix with 25.11 release and core inputs
- Add dedicated modules for audio (Pipewire), bluetooth, and networking
- Update GEMINI.md with the new Modular Merging Architecture blueprint
- Configure graphical installer ISO and test VM outputs

bin/nomarchy-toggle-idle

@@ -1,11 +1,28 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
-if pgrep -x hypridle >/dev/null; then
-  pkill -x hypridle
-  notify-send -u low "󱫖    Stop locking computer when idle"
-else
-  uwsm-app -- hypridle >/dev/null 2>&1 &
-  notify-send -u low "󱫖    Now locking computer when idle"
+# Toggles the idle daemon (hypridle) between enabled and disabled.
+# Declarative + Hybrid (instant IPC/kill) for Nomarchy NixOS.
+
+STATE_FILE="$HOME/.config/home-manager/idle-state.json"
+mkdir -p "$(dirname "$STATE_FILE")"
+
+if [ ! -f "$STATE_FILE" ]; then
+    echo '{"enabled": true}' > "$STATE_FILE"
 fi
 
-pkill -RTMIN+9 waybar
+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"
+    setsid hypridle >/dev/null 2>&1 &
+    notify-send -u low "󱫖  Now locking computer when idle"
+fi
+
+echo "{\"enabled\": $NEW_ENABLED}" > "$STATE_FILE"
+echo "Idle daemon set to $NEW_ENABLED declaratively."
+
+pkill -RTMIN+9 waybar # Signal waybar if needed