asw-v01: archive deferred content (packs, site, lab, legacy examples)

- 2.1: packs/ -> archive/packs/
- 2.2: site/ -> archive/site/
- 2.3: src/lab/ -> archive/lab/
- 2.4: examples/ -> archive/examples-legacy/ (SSI-based)

archive/site/layouts/partials/head.html

@@ -0,0 +1,62 @@
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1">
+<meta name="color-scheme" content="dark">
+<title>
+  {{- if .IsHome -}}
+    {{ .Site.Title }}
+  {{- else -}}
+    {{ .Title }} · {{ .Site.Title }}
+  {{- end -}}
+</title>
+{{- with .Description }}<meta name="description" content="{{ . }}">{{- end }}
+{{- if not .Description }}{{- with .Site.Params.description }}<meta name="description" content="{{ . }}">{{- end }}{{- end }}
+
+{{- /* ── Meta partials ─────────────────────────────────────────── */}}
+{{- partial "meta/seo.html"           . -}}
+{{- partial "meta/og.html"            . -}}
+{{- partial "meta/ai-disclosure.html" . -}}
+{{- partial "meta/json-ld.html"       . -}}
+
+{{- /* ── CSS ────────────────────────────────────────────────────── */}}
+{{- if hugo.IsDevelopment }}
+  <link rel="stylesheet" href="/vendor/open-props.min.css">
+  <link rel="stylesheet" href="/vendor/media.min.css">
+  <link rel="stylesheet" href="/css/layers/00-reset.css">
+  <link rel="stylesheet" href="/css/layers/01-tokens.css">
+  <link rel="stylesheet" href="/css/layers/02-typography.css">
+  <link rel="stylesheet" href="/css/layers/03-landmarks.css">
+  <link rel="stylesheet" href="/css/layers/04-forms.css">
+  <link rel="stylesheet" href="/css/layers/05-components.css">
+  <link rel="stylesheet" href="/css/layers/06-navigation.css">
+  <link rel="stylesheet" href="/css/layers/07-data-attrs.css">
+  <link rel="stylesheet" href="/css/layers/08-utilities.css">
+  <link rel="stylesheet" href="/css/layers/09-charts.css">
+  <link rel="stylesheet" href="/css/layers/10-chroma.css">
+  <link rel="stylesheet" href="/css/layers/11-layout.css">
+  <link rel="stylesheet" href="/css/layers/12-landing.css">
+{{- else }}
+  <link rel="stylesheet" href="/asw.css">
+{{- end }}
+
+{{- range .AlternativeOutputFormats -}}
+<link rel="{{ .Rel }}" type="{{ .MediaType.Type }}" href="{{ .Permalink | safeURL }}">
+{{- end }}
+<script>
+// Theme toggle — respects OS preference, persists choice
+(function(){
+  var s = localStorage.getItem('theme');
+  if (s) document.documentElement.setAttribute('data-theme', s);
+  document.addEventListener('click', function(e) {
+    var b = e.target.closest('[data-theme-toggle]');
+    if (!b) return;
+    var current = document.documentElement.getAttribute('data-theme')
+      || (matchMedia('(prefers-color-scheme: light)').matches ? 'light' : 'dark');
+    var next = current === 'light' ? 'dark' : 'light';
+    document.documentElement.setAttribute('data-theme', next);
+    localStorage.setItem('theme', next);
+  });
+})();
+</script>
+
+<!-- Umami analytics — estate dashboard -->
+<script defer src="https://analytics.trentuna.com/script.js" data-website-id="9546a046-b901-471f-bfed-88c874786435"></script>