refactor: reorganize server modules

- Moved each individual service definition into a dedicated `services/`
  directory under every server module (e.g.
`modules/servers/bragi/services/`).
- Updated the corresponding `default.nix` files to import the renamed
  service modules from the new location.
- Applied the same changes across all server modules, ensuring
  the API and import paths remain consistent.

modules/servers/bragi/services/audiobookshelf.nix

@@ -0,0 +1,32 @@
+{...}: {
+  services.audiobookshelf = {
+    enable = true;
+  };
+
+  systemd.services.audiobookshelf = {
+    after = ["mnt.mount"];
+    bindsTo = ["mnt.mount"];
+  };
+
+  services.traefik.dynamicConfigOptions.http = {
+    services.audiobookshelf.loadBalancer.servers = [
+      {
+        url = "http://localhost:8000";
+      }
+    ];
+
+    routers.audiobookshelf = {
+      rule = "Host(`abs.cronyakatsuki.xyz`)";
+      tls = {
+        certResolver = "porkbun";
+      };
+      service = "audiobookshelf";
+      entrypoints = "websecure";
+    };
+  };
+
+  services.restic.backups = {
+    local.paths = ["/var/lib/audiobookshelf"];
+    server.paths = ["/var/lib/audiobookshelf"];
+  };
+}

modules/servers/bragi/services/navidrome.nix

@@ -0,0 +1,37 @@
+{config, ...}: {
+  services.navidrome = {
+    enable = true;
+    settings = {
+      MusicFolder = "/mnt/music";
+      BaseUrl = "https://nd.cronyakatsuki.xyz";
+    };
+    environmentFile = "${config.age.secrets.navidrome.path}";
+  };
+
+  systemd.services.navidrome = {
+    after = ["mnt.mount"];
+    bindsTo = ["mnt.mount"];
+  };
+
+  services.traefik.dynamicConfigOptions.http = {
+    services.navidrome.loadBalancer.servers = [
+      {
+        url = "http://localhost:4533";
+      }
+    ];
+
+    routers.navidrome = {
+      rule = "Host(`nd.cronyakatsuki.xyz`)";
+      tls = {
+        certResolver = "porkbun";
+      };
+      service = "navidrome";
+      entrypoints = "websecure";
+    };
+  };
+
+  services.restic.backups = {
+    local.paths = ["/var/lib/navidrome"];
+    server.paths = ["/var/lib/navidrome"];
+  };
+}

modules/servers/bragi/services/storage-box.nix

@@ -0,0 +1,19 @@
+{
+  config,
+  pkgs,
+  ...
+}: {
+  environment.systemPackages = [pkgs.rclone];
+
+  fileSystems."/mnt" = {
+    device = "storage:";
+    fsType = "rclone";
+    options = [
+      "nodev"
+      "nofail"
+      "allow_other"
+      "args2env"
+      "config=${config.age.secrets.rclone.path}"
+    ];
+  };
+}

modules/servers/bragi/services/umurmur.nix

@@ -0,0 +1,9 @@
+{...}: {
+  services.umurmur = {
+    enable = true;
+    openFirewall = true;
+    settings = {
+      welcometext = "Welcome to crony's nutsack.";
+    };
+  };
+}