site: feeds everywhere + programmatic surface

Feeds: JSON Feed 1.1 at /feed.json, per-category and per-tag RSS at
/categories/<name>/rss.xml and /tags/<name>/rss.xml alongside the main
/rss.xml — all from a shared src/lib/feed.ts item source. Category/tag
pages advertise their scoped feed via autodiscovery; new /feeds/
directory page (footer-linked) lists every feed with counts; RSS feeds
gain an atom:link self reference and a feed.xsl stylesheet so they
render readably in browsers.

Programmatic readers: build-generated /llms.txt (site map with every
review/bundle/post), SearchAction on the WebSite JSON-LD wired to
/search/?q=, and a "For robots" section on /feeds/ documenting
search.json, llms.txt, the sitemap, and JSON-LD coverage.

Claude-Session: https://claude.ai/code/session_01WZaczDJjL3xZ3u5spsN5AL

src/layouts/BaseLayout.astro

@@ -20,6 +20,8 @@ interface Props {
   modifiedTime?: Date;
   articleTags?: string[];
   jsonLd?: Record<string, unknown> | Record<string, unknown>[];
+  /** Page-scoped feeds (category/tag) advertised alongside the site-wide ones. */
+  feeds?: Array<{ title: string; href: string }>;
   /** Opt into the wider content tier on roomy viewports (grid/listing pages). */
   wide?: boolean;
 }
@@ -40,6 +42,7 @@ const {
   modifiedTime,
   articleTags,
   jsonLd,
+  feeds,
   wide,
 } = Astro.props;
 const siteName = 'Unique';
@@ -77,6 +80,7 @@ const year = new Date().getFullYear();
       modifiedTime={modifiedTime}
       articleTags={articleTags}
       jsonLd={jsonLd}
+      feeds={feeds}
     />
     <script defer src="https://static.cloudflareinsights.com/beacon.min.js" data-cf-beacon='{"token": "fc978456945c49ae90a0b7e0b891ffd2"}'></script>
   </head>
@@ -123,6 +127,7 @@ const year = new Date().getFullYear();
             <li><a href="/">Home</a></li>
             <li><a href="/grid/">Grid</a></li>
             <li><a href="/sources/">Sources</a></li>
+            <li><a href="/feeds/">Feeds</a></li>
           </ul>
         </section>
         <section>