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

modules/home/fonts.nix

@@ -1,9 +1,11 @@
 { config, pkgs, lib, ... }:
 
 let
-  stateFile = "${config.home.homeDirectory}/.config/home-manager/font-state.nix";
-  activeFont = if builtins.pathExists stateFile then 
-    lib.removeSuffix "\n" (builtins.readFile stateFile) 
+  # Standardize state files to a common directory
+  stateDir = "${config.home.homeDirectory}/.config/home-manager";
+  fontStateFile = "${stateDir}/font-state.nix";
+  activeFont = if builtins.pathExists fontStateFile then 
+    lib.removeSuffix "\n" (builtins.readFile fontStateFile) 
   else "JetBrainsMono Nerd Font";
 in
 {
@@ -14,4 +16,9 @@ in
       description = "Monospace font for the system";
     };
   };
+
+  config = {
+    fonts.fontconfig.enable = true;
+    xdg.dataFile."fonts/nomarchy.ttf".source = ../../config/nomarchy.ttf;
+  };
 }