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-nightlight

@@ -1,30 +1,36 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
-# Default temperature values
-ON_TEMP=4000
-OFF_TEMP=6000
+# Toggles the nightlight (hyprsunset) between enabled (4000) and disabled (6500)
+# Declarative + Hybrid (instant IPC) for Nomarchy NixOS.
 
-# Ensure hyprsunset is running
-if ! pgrep -x hyprsunset; then
-  setsid uwsm-app -- hyprsunset &
-  sleep 1 # Give it time to register
+STATE_FILE="$HOME/.config/home-manager/hyprsunset-state.json"
+mkdir -p "$(dirname "$STATE_FILE")"
+
+if [ ! -f "$STATE_FILE" ]; then
+    echo '{"enabled": false, "temperature": 4000}' > "$STATE_FILE"
 fi
 
-# Query the current temperature
-CURRENT_TEMP=$(hyprctl hyprsunset temperature 2>/dev/null | grep -oE '[0-9]+')
+enabled=$(jq -r '.enabled' "$STATE_FILE")
 
-restart_nightlighted_waybar() {
-  if grep -q "custom/nightlight" ~/.config/waybar/config.jsonc; then
-    nomarchy-restart-waybar # restart waybar in case user has waybar module for hyprsunset
-  fi
-}
-
-if [[ $CURRENT_TEMP == $OFF_TEMP ]]; then
-  hyprctl hyprsunset temperature $ON_TEMP
-  notify-send -u low "  Nightlight screen temperature"
-  restart_nightlighted_waybar
+if [[ $enabled == "true" ]]; then
+    NEW_ENABLED="false"
+    TEMP=6500
+    notify-send -u low "  Nightlight DISABLED"
 else
-  hyprctl hyprsunset temperature $OFF_TEMP
-  notify-send -u low "   Daylight screen temperature"
-  restart_nightlighted_waybar
+    NEW_ENABLED="true"
+    TEMP=4000
+    notify-send -u low "  Nightlight ENABLED"
 fi
+
+# Instant feedback via IPC
+if pgrep -x hyprsunset >/dev/null; then
+    hyprctl hyprsunset temperature $TEMP
+else
+    # Should be started by systemd, but just in case
+    setsid hyprsunset -t $TEMP &
+fi
+
+echo "{\"enabled\": $NEW_ENABLED, \"temperature\": 4000}" > "$STATE_FILE"
+echo "Nightlight set to $NEW_ENABLED ($TEMP) declaratively."
+# No need to run env-update if we don't want the delay, 
+# as next HM switch will pick it up and apply it.