manatee: Add jellyfin module

hosts/manatee/modules/jellyfin/default.nix

@@ -0,0 +1,39 @@
+{ pkgs, ... }:
+{
+  users.users.jellyfin = {
+    isSystemUser = true;
+    group = "storage";
+
+    extraGroups = [
+      "render"
+      "video"
+    ];
+  };
+
+  hardware = {
+    graphics = {
+      enable = true;
+      extraPackages = [
+        pkgs.intel-media-driver # Modern Intel VA-API driver (needed for N305)
+        pkgs.libvdpau-va-gl # VDPAU backend for VA-API GLX interop
+      ];
+
+    };
+  };
+
+  services = {
+    jellyfin = {
+      enable = true;
+      openFirewall = true;
+
+      user = "jellyfin";
+      group = "storage";
+    };
+  };
+
+  environment.systemPackages = [
+    pkgs.jellyfin
+    pkgs.jellyfin-web
+    pkgs.jellyfin-ffmpeg
+  ];
+}