wip(web): mock control-file and META.json blocks on the adminpack catalog page

Author: lgarciaog

web/data/catalog/extension_meta/adminpack.yaml

@@ -0,0 +1,43 @@
+# Extension packaging metadata shown on the catalog detail page.
+# One file per extension under data/catalog/extension_meta/<name>.yaml;
+# the extension template renders these blocks when a file exists.
+#
+# control: fetched verbatim from the PostgreSQL source tree (REL_16_STABLE —
+#   adminpack was removed in PostgreSQL 17):
+#   https://raw.githubusercontent.com/postgres/postgres/REL_16_STABLE/contrib/adminpack/adminpack.control
+#
+# meta: MOCK. adminpack is a core contrib module and is NOT distributed on
+#   PGXN, so no META.json exists upstream. This block is synthesized following
+#   the PGXN Meta Spec v1.0.0 with adminpack's real facts, as a shape preview
+#   for extensions that do ship one.
+
+control:
+  source: https://github.com/postgres/postgres/blob/REL_16_STABLE/contrib/adminpack/adminpack.control
+  fields:
+    comment: administrative functions for PostgreSQL
+    default_version: "2.1"
+    module_pathname: "$libdir/adminpack"
+    relocatable: "false"
+    schema: pg_catalog
+
+meta:
+  mock: true
+  name: adminpack
+  abstract: administrative functions for PostgreSQL
+  version: "2.1.0"
+  maintainer: PostgreSQL Global Development Group
+  license: postgresql
+  release_status: stable
+  provides:
+    adminpack:
+      file: adminpack--1.0.sql
+      version: "2.1.0"
+      abstract: administrative functions for PostgreSQL
+  resources:
+    repository: https://github.com/postgres/postgres/tree/REL_16_STABLE/contrib/adminpack
+    documentation: https://www.postgresql.org/docs/16/adminpack.html
+  tags:
+    - admin
+    - administration
+    - files
+    - contrib

web/layouts/catalog/single.html

@@ -89,6 +89,74 @@ <h2 style="margin-top:2rem;">Versions</h2>
     </table>
     {{ end }}
 
+    {{ with index (site.Data.catalog.extension_meta | default dict) $c.name }}
+      {{ with .control }}
+      <h2 style="margin-top:2rem;">Control file</h2>
+      <table class="versions-table">
+        <tbody>
+          {{ range $k, $v := .fields }}
+            <tr><td class="mono">{{ $k }}</td><td class="mono">{{ $v }}</td></tr>
+          {{ end }}
+        </tbody>
+      </table>
+      {{ with .source }}
+      <p style="font-size:0.8rem; color:hsl(var(--muted-foreground)); margin-top:0.75rem;">
+        Source: <a href="{{ . }}" target="_blank" rel="noopener">{{ $c.name }}.control ↗</a>
+      </p>
+      {{ end }}
+      {{ end }}
+
+      {{ with .meta }}
+      <h2 style="margin-top:2rem;">Distribution metadata (META.json){{ if .mock }} <span class="pill pill-light">mock</span>{{ end }}</h2>
+      <div class="component-meta-grid">
+        <div class="meta-block">
+          <h3>Distribution</h3>
+          <p>{{ .abstract }}</p>
+          <span class="pill mono">v{{ .version }}</span>
+          <span class="pill">{{ .release_status }}</span>
+        </div>
+        <div class="meta-block">
+          <h3>Maintainer</h3>
+          <p>{{ .maintainer }}</p>
+        </div>
+        <div class="meta-block">
+          <h3>License</h3>
+          <span class="pill mono">{{ .license }}</span>
+        </div>
+        {{ with .resources }}
+        <div class="meta-block">
+          <h3>Resources</h3>
+          <ul>
+            {{ with .repository }}<li><a href="{{ . }}" target="_blank" rel="noopener">Repository ↗</a></li>{{ end }}
+            {{ with .documentation }}<li><a href="{{ . }}" target="_blank" rel="noopener">Documentation ↗</a></li>{{ end }}
+          </ul>
+        </div>
+        {{ end }}
+        {{ with .tags }}
+        <div class="meta-block">
+          <h3>Tags</h3>
+          {{ range . }}<span class="pill">{{ . }}</span> {{ end }}
+        </div>
+        {{ end }}
+      </div>
+      {{ with .provides }}
+      <h3 style="margin-top:1.5rem;">Provides</h3>
+      <table class="versions-table">
+        <thead><tr><th>Extension</th><th>Version</th><th>File</th></tr></thead>
+        <tbody>
+          {{ range $name, $p := . }}
+            <tr>
+              <td class="mono">{{ $name }}</td>
+              <td class="mono">{{ $p.version }}</td>
+              <td class="mono">{{ $p.file }}</td>
+            </tr>
+          {{ end }}
+        </tbody>
+      </table>
+      {{ end }}
+      {{ end }}
+    {{ end }}
+
   {{ else if eq $category "addon" }}
     {{ with index $c.versions 0 }}
       <p class="component-description">{{ .longDescription | default .description }}</p>