complete restructure

modules/services/avahi.nix

@@ -0,0 +1,22 @@
+# modules/services/avahi.nix
+# mDNS for local network discovery
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}:
+
+{
+  services.avahi = {
+    enable = true;
+    nssmdns4 = true;
+    openFirewall = true;
+
+    publish = {
+      enable = true;
+      addresses = true;
+      workstation = true;
+    };
+  };
+}

modules/services/default.nix

@@ -0,0 +1,9 @@
+# modules/services/default.nix
+{
+  imports = [
+    ./avahi.nix
+    ./printing.nix
+    ./maintenance.nix
+    ./navidrome.nix
+  ];
+}

modules/services/maintenance.nix

@@ -0,0 +1,26 @@
+# modules/services/maintenance.nix
+# System maintenance and optimization services
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}:
+
+{
+  services.psd.enable = true;
+  services.fwupd.enable = true;
+
+  services.earlyoom = {
+    enable = true;
+    freeMemThreshold = 5;
+    freeSwapThreshold = 10;
+    enableNotifications = true;
+  };
+
+  services.locate = {
+    enable = true;
+    package = pkgs.plocate;
+    interval = "daily";
+  };
+}

modules/services/navidrome.nix

@@ -0,0 +1,32 @@
+# modules/services/navidrome.nix
+# Self-hosted music streaming server
+{
+  config,
+  pkgs,
+  lib,
+  username,
+  ...
+}:
+
+{
+  services.navidrome = {
+    enable = true;
+
+    settings = {
+      MusicFolder = "/home/${username}/Music";
+      Address = "127.0.0.1";
+      Port = 4533;
+      UIWelcomeMessage = "Welcome to Navidrome!";
+      EnableTranscodingConfig = true;
+      ScanSchedule = "@every 1h";
+      LastFM.Enabled = true;
+      EnableSharing = true;
+      CoverArtPriority = "cover.*, folder.*, front.*, embedded, external";
+      SessionTimeout = "24h";
+    };
+  };
+
+  systemd.tmpfiles.rules = [
+    "d /home/${username}/Music 0755 ${username} users -"
+  ];
+}

modules/services/printing.nix

@@ -0,0 +1,12 @@
+# modules/services/printing.nix
+# CUPS printing service
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}:
+
+{
+  services.printing.enable = true;
+}