Refactor: Simplify module structure and reorganize services

- Removed system/ directory, merged applications into users/geir.nix
- Simplified fonts.nix to bare minimum (users can add more)
- Moved transmission.nix to sleeper-service/services/ (machine-specific)
- Organized grey-area services into services/ directory
- Updated import paths and tested all configurations
- Added research documentation for deploy-rs and GNU Stow

machines/grey-area/services/audiobook.nix

@@ -0,0 +1,11 @@
+{ configs, pkgs, ... }:
+{
+  environment.systemPackages = [
+    pkgs.audiobookshelf
+  ];
+  services.audiobookshelf.group = "users";
+  services.audiobookshelf.enable = true;
+  services.audiobookshelf.host = "0.0.0.0" ;
+  services.audiobookshelf.port = 8000;
+  services.audiobookshelf.openFirewall = true;
+}

machines/grey-area/services/calibre-web.nix

@@ -0,0 +1,16 @@
+{ config, pkgs, ... }:
+{
+  services.calibre-web = {
+    enable = true;
+    group = "users";
+    listen = {
+        ip = "0.0.0.0";
+        port = 8083;
+    };
+    options = {
+      calibreLibrary = "/mnt/remote/media/books/calibre/";
+      enableBookUploading = true;
+    };
+  };
+  networking.firewall.allowedTCPPorts = [ 8083 ];
+}

machines/grey-area/services/forgejo.nix

@@ -0,0 +1,26 @@
+{ pkgs, config, ... }:
+{
+  services.forgejo = {
+    enable = true;
+    #user = "git";
+  };
+   
+  services.forgejo.settings = {
+    DEFAULT = {
+      RUN_MODE = "prod";
+    };
+    service = {
+      DISABLE_REGISTRATION = true;
+    };
+    server = {
+      ROOT_URL = "http://apps:3000";
+      SSH_DOMAIN = "git.geokkjer.eu";
+    };
+    repository = {
+      ENABLE_PUSH_CREATE_USER = true;
+    };
+    other = {
+      SHOW_FOOTER_VERSION = true;
+    };
+  };
+}

machines/grey-area/services/jellyfin.nix

@@ -0,0 +1,9 @@
+{ config, pkgs, ... }:
+{
+  services.jellyfin = { 
+  	enable = true;
+	  group = "users";
+	};	
+  networking.firewall.allowedTCPPorts = [ 8096 8920 ];
+  networking.firewall.allowedUDPPorts = [ 1900 7359 ];
+}