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-font-set

@@ -1,46 +1,36 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Set the system-wide monospace font that should be used by the terminal, hyprlock, waybar, swayosd, etc.
-# The font name must be one of the ones returned by nomarchy-font-list.
+# Declarative version for Nomarchy NixOS.
 
 font_name="$1"
 
-if [[ -n $font_name ]]; then
-  if fc-list | grep -iq "$font_name"; then
-    if [[ -f ~/.config/alacritty/alacritty.toml ]]; then
-      sed -i "s/family = \".*\"/family = \"$font_name\"/g" ~/.config/alacritty/alacritty.toml
-    fi
-
-    if [[ -f ~/.config/kitty/kitty.conf ]]; then
-      sed -i "s/^font_family .*/font_family $font_name/g" ~/.config/kitty/kitty.conf
-      pkill -USR1 kitty
-    fi
-
-    if [[ -f ~/.config/ghostty/config ]]; then
-      sed -i "s/font-family = \".*\"/font-family = \"$font_name\"/g" ~/.config/ghostty/config
-      pkill -SIGUSR2 ghostty
-    fi
-
-    sed -i "s/font_family = .*/font_family = $font_name/g" ~/.config/hypr/hyprlock.conf
-    sed -i "s/font-family: .*/font-family: '$font_name';/g" ~/.config/waybar/style.css
-    sed -i "s/font-family: .*/font-family: '$font_name';/g" ~/.config/swayosd/style.css
-    xmlstarlet ed -L \
-      -u '//match[@target="pattern"][test/string="monospace"]/edit[@name="family"]/string' \
-      -v "$font_name" \
-      ~/.config/fontconfig/fonts.conf
-
-    nomarchy-restart-waybar
-    nomarchy-restart-swayosd
-
-    if pgrep -x ghostty; then
-      notify-send -u low "    You must restart Ghostty to see font change"
-    fi
-
-    nomarchy-hook font-set "$font_name"
-  else
-    echo "Font '$font_name' not found."
-    exit 1
-  fi
-else
+if [[ -z $font_name ]]; then
   echo "Usage: nomarchy-font-set <font-name>"
+  exit 1
+fi
+
+STATE_DIR="$HOME/.config/home-manager"
+STATE_FILE="$STATE_DIR/font-state.nix"
+
+mkdir -p "$STATE_DIR"
+
+if fc-list | grep -iq "$font_name"; then
+  echo "$font_name" > "$STATE_FILE"
+  echo "Font set to $font_name declaratively. Applying changes..."
+  env-update
+  
+  # Instant feedback for certain apps via IPC
+  if pgrep -x kitty; then
+    pkill -USR1 kitty
+  fi
+  if pgrep -x ghostty; then
+    pkill -SIGUSR2 ghostty
+    notify-send -u low "    You must restart Ghostty to see font change"
+  fi
+  
+  nomarchy-hook font-set "$font_name"
+else
+  echo "Font '$font_name' not found."
+  exit 1
 fi