media1: ship kodi logs to loki

Kodi logs to ~/.kodi/temp/kodi.log which isn't picked up by the
journal or varlog scrape configs. Add a dedicated promtail scrape
config for it.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

hosts/media1/media-desktop.nix

@@ -1,4 +1,5 @@
 {
+  config,
   pkgs,
   lib,
   ...
@@ -117,4 +118,23 @@ in
     MOZ_ENABLE_WAYLAND = "1";
     LIBVA_DRIVER_NAME = "iHD";
   };
+
+  # Ship Kodi logs to Loki
+  services.promtail.configuration.scrape_configs = [
+    {
+      job_name = "kodi";
+      static_configs = [
+        {
+          targets = [ "localhost" ];
+          labels = {
+            job = "kodi";
+            hostname = config.networking.hostName;
+            tier = config.homelab.host.tier;
+            role = config.homelab.host.role;
+            __path__ = "/home/kodi/.kodi/temp/kodi.log";
+          };
+        }
+      ];
+    }
+  ];
 }