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/default.nix

@@ -7,12 +7,23 @@ let
   activeThemeName = if builtins.pathExists stateFile then 
     lib.removeSuffix "\n" (builtins.readFile stateFile) 
   else "dracula";
+  userPackagesFile = "${config.home.homeDirectory}/.config/home-manager/user-packages.json";
+  userPackages = if builtins.pathExists userPackagesFile then 
+    let 
+      pkgNames = builtins.fromJSON (builtins.readFile userPackagesFile);
+      # Filter to only packages that exist in pkgs to prevent build failures
+      validPkgs = builtins.filter (name: builtins.hasAttr name pkgs) pkgNames;
+    in builtins.map (name: pkgs.${name}) validPkgs
+  else [];
 in
 {
   imports = [
     inputs.nix-colors.homeManagerModules.default
     inputs.walker.homeManagerModules.default
     ./fonts.nix
+    ./alacritty.nix
+    ./nightlight.nix
+    ./idle.nix
     ./stylix.nix
     ./hyprland.nix
     ./waybar.nix
@@ -25,8 +36,25 @@ in
   colorScheme = palettes.${activeThemeName} or palettes.dracula;
 
   home.packages = with pkgs; [
-    alacritty
-  ];
+    firefox
+    thunar
+    imv
+    mpv
+    neovim
+    wl-clipboard
+    grim
+    slurp
+    brightnessctl
+    playerctl
+    pamixer
+    mise
+    jq
+    xmlstarlet
+    nerd-fonts.jetbrains-mono
+    nerd-fonts.roboto-mono
+    nerd-fonts.fira-code
+    nerd-fonts.ubuntu-mono
+  ] ++ userPackages;
 
   home.shellAliases = {
     sys-update = "sudo nixos-rebuild switch --flake /etc/nixos#default";