feat: serve audio as local Hugo page resources instead of Jellyfin

Download all 20 track MP3s from Jellyfin and store them as page bundle
resources (track.mp3). Update templates to use .Resources.GetMatch
instead of .Params.audio, removing external API key dependencies.

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

layouts/partials/head/json-ld.html

@@ -30,10 +30,10 @@
     "@type": "Person",
     "name": "{{ .Params.artist | default .Site.Params.author }}"
   }
-  {{- if .Params.audio }},
+  {{- with .Resources.GetMatch "track.*" }},
   "audio": {
     "@type": "AudioObject",
-    "contentUrl": "{{ .Params.audio }}"
+    "contentUrl": "{{ .Permalink }}"
   }
   {{- end }}
   {{- if .Params.genre }},

layouts/partials/head/opengraph.html

@@ -30,13 +30,15 @@
 {{- end }}
 
 {{/* Audio-specific OpenGraph tags */}}
-{{- if and (eq .Section "tracks") .Params.audio }}
-<meta property="og:audio" content="{{ .Params.audio }}">
+{{- if eq .Section "tracks" }}
+  {{- with .Resources.GetMatch "track.*" }}
+<meta property="og:audio" content="{{ .Permalink }}">
 <meta property="og:audio:type" content="audio/mpeg">
-  {{- if .Params.duration }}
-<meta property="music:duration" content="{{ .Params.duration }}">
   {{- end }}
-  {{- if .Params.artist }}
-<meta property="music:musician" content="{{ .Params.artist }}">
+  {{- if $.Params.duration }}
+<meta property="music:duration" content="{{ $.Params.duration }}">
+  {{- end }}
+  {{- if $.Params.artist }}
+<meta property="music:musician" content="{{ $.Params.artist }}">
   {{- end }}
 {{- end }}

layouts/partials/head/preload.html

@@ -1,6 +1,3 @@
-{{/* Preconnect to external domains */}}
-<link rel="preconnect" href="https://jellyfin.media.pivoine.art" crossorigin>
-
 {{/* DNS prefetch */}}
 <link rel="dns-prefetch" href="https://unpkg.com">