feat: add notes to all applications

src/content/docs/applications/navidrome.mdx

@@ -13,3 +13,17 @@ hero:
       link: https://gitea.alexlebens.dev/alexlebens/infrastructure/src/branch/main/clusters/cl01tl/helm/navidrome
       icon: right-arrow
 ---
+
+import { Aside } from '@astrojs/starlight/components';
+
+<Aside type="tip">Has an internal [Grafana Dashboard](https://grafana.alexlebens.net/goto/bfit82l8b0gsgf?orgId=1).</Aside>
+
+# Purpose
+
+Music server that uses the subsonic protocol.
+
+# Notes
+
+Chart also deploys a webclient of [Feishin](https://github.com/jeffvli/feishin), but I mostly use the desktop app. On Android I use [Symfonium](https://symfonium.app/).
+
+While I can use [Jellyfin](https://docs.alexlebens.dev/applications/jellyfin) for music, I prefer separation for dedicated media types.