feat(nixos): add pikachu homepage guest

configs/nixos/registry/homepage.nix

@@ -0,0 +1,45 @@
+{ lib, ... }:
+{
+  type = lib.types.submodule {
+    options = {
+      tab = lib.mkOption {
+        type = lib.types.str;
+        example = "Apps";
+        description = "Homepage tab that contains this entry.";
+      };
+
+      section = lib.mkOption {
+        type = lib.types.str;
+        example = "Media";
+        description = "Homepage section that contains this entry.";
+      };
+
+      name = lib.mkOption {
+        type = lib.types.str;
+        example = "Navidrome";
+        description = "Homepage display name for this entry.";
+      };
+
+      description = lib.mkOption {
+        type = lib.types.nullOr lib.types.str;
+        default = null;
+        example = "Music";
+        description = "Homepage description for this entry.";
+      };
+
+      icon = lib.mkOption {
+        type = lib.types.nullOr lib.types.str;
+        default = null;
+        example = "navidrome.png";
+        description = "Homepage icon for this entry.";
+      };
+
+      href = lib.mkOption {
+        type = lib.types.nullOr lib.types.str;
+        default = null;
+        example = "https://music.alexion.dev";
+        description = "Homepage link override for this entry.";
+      };
+    };
+  };
+}

configs/nixos/registry/route.nix

@@ -12,6 +12,10 @@
         );
       message = "Route UDP ports must be unique.";
     }
+    {
+      assertion = entries: lib.all (entry: entry.value.port == null || entry.value.http.port == null) entries;
+      message = "Route entries must not set both port and http.port.";
+    }
   ];
 
   type = lib.types.submodule {
@@ -19,14 +23,21 @@
       domain = lib.mkOption {
         type = lib.types.str;
         example = "files.alexion.dev";
-        description = "Public domain served by this route entry.";
+        description = "Domain served by this route entry.";
       };
 
       port = lib.mkOption {
         type = lib.types.nullOr lib.types.port;
         default = null;
         example = 3923;
-        description = "Backend TCP port served by the matching address registry entry.";
+        description = "HTTPS backend TCP port served by the matching address registry entry.";
+      };
+
+      http.port = lib.mkOption {
+        type = lib.types.nullOr lib.types.port;
+        default = null;
+        example = 8082;
+        description = "HTTP backend TCP port served by the matching address registry entry.";
       };
 
       udp.ports = lib.mkOption {