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-install-vscode

@@ -1,29 +1,22 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
-# Install VSCode and configure it to use the gnome-libsecret password store, not to update automatically, and to use the current Nomarchy theme.
+# Install VSCode declaratively for Nomarchy NixOS.
 
 echo "Installing VSCode..."
-nomarchy-pkg-add visual-studio-code-bin
+nomarchy-pkg-add vscode
 
-mkdir -p ~/.vscode ~/.config/Code/User
-
-cat > ~/.vscode/argv.json << 'EOF'
-// This configuration file allows you to pass permanent command line arguments to VS Code.
-// Only a subset of arguments is currently supported to reduce the likelihood of breaking
-// the installation.
-//
-// PLEASE DO NOT CHANGE WITHOUT UNDERSTANDING THE IMPACT
-//
-// NOTE: Changing this file requires a restart of VS Code.
-{
-  "password-store":"gnome-libsecret"
-}
-EOF
+# VSCode still allows some runtime configuration in its JSON files.
+mkdir -p ~/.config/Code/User
 
 # Ensure VSC's own auto-update feature is turned off
-printf '{\n  "update.mode": "none"\n}\n' > ~/.config/Code/User/settings.json
+if [ ! -f ~/.config/Code/User/settings.json ]; then
+    echo '{"update.mode": "none"}' > ~/.config/Code/User/settings.json
+else
+    # Update existing settings.json with update.mode: none using jq
+    jq '. + {"update.mode": "none"}' ~/.config/Code/User/settings.json > ~/.config/Code/User/settings.json.tmp && mv ~/.config/Code/User/settings.json.tmp ~/.config/Code/User/settings.json
+fi
 
 # Apply Nomarchy theme to VSCode
 nomarchy-theme-set-vscode
 
-setsid gtk-launch code
+setsid code >/dev/null 2>&1 &