add(apps): jellyfin-mpv-shim proper

apps/jellyfin-mpv-shim/default.nix

@@ -1,7 +1,37 @@
 {pkgs, ...}: {
-  home.packages = with pkgs; [
-    jellyfin-mpv-shim
-  ];
+  services.jellyfin-mpv-shim = {
+    enable = true;
+    package = pkgs.jellyfin-mpv-shim;
+    settings = {
+      audio_output = "hdmi";
+      auto_play = true;
+      check_updates = false;
+      discord_presence = true;
+      enable_gui = true;
+      enable_osc = true;
+      fullscreen = true;
+      menu_mouse = true;
+      player_name = "hakase";
+      raise_mpv = true;
+      shader_pack_enable = true;
+      shader_pack_remember = true;
+      shader_pack_subtype = "lq";
+      skip_credits_enable = true;
+      skip_intro_enable = true;
+      thumbnail_enable = true;
+      thumbnail_osc_builtin = true;
+      use_mpv_config = true;
+      menu_style = "osc";
+      # Good UI/Quality defaults
+      remote_kbps = 100000;
+      local_kbps = 1000000;
+      lang_filter = "und,eng,jpn,mis,mul,zxx";
+      subtitle_size = 100;
+      subtitle_color = "#FFFFFFFF";
+      seek_left = -5;
+      seek_right = 5;
+    };
+  };
 
   wayland.windowManager.hyprland.settings.windowrulev2 = [
     # --- JELLYFIN MPV SHIM ---
@@ -12,8 +42,4 @@
     "idleinhibit focus, class:^(jellyfin-mpv-shim)$"
     "noblur, class:^(jellyfin-mpv-shim)$"
   ];
-
-  wayland.windowManager.hyprland.settings.exec-once = [
-    "uwsm app -- jellyfin-mpv-shim"
-  ];
 }