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-pkg-missing

@@ -1,11 +1,15 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
-# Returns true if any of the named packages are missing from the system (or false if they're all there).
+PKG_NAME="$1"
 
-for pkg in "$@"; do
-  if ! pacman -Q "$pkg" &>/dev/null; then
+if [ -z "$PKG_NAME" ]; then
+    echo "Usage: nomarchy-pkg-missing <package-name>"
+    exit 1
+fi
+
+nomarchy-pkg-present "$PKG_NAME"
+if [ $? -eq 0 ]; then
+    exit 1
+else
     exit 0
-  fi
-done
-
-exit 1
+fi