Remove the per-page Copy Markdown and Open buttons

The button row above each page body held fumadocs' MarkdownCopyButton and
ViewOptionsPopover (the "Open" popover: view as markdown / edit on GitHub).
Drop both, along with the now-unused markdownUrl and sourcePath locals and
the getPageMarkdownUrl and gitConfig imports.

DocsDescription loses its mb-0 override and falls back to the default mb-8;
the override only existed so the description butted against the button
row's bottom border, which is gone with it.

The /llms.mdx/docs/**/content.md routes stay — the copy button fetched
them, but llms.txt and llms-full.txt still do. gitConfig stays in
lib/layout.shared.tsx for the navbar's GitHub link.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GKc3BJAnDEG26khsB5p125

Author: kyleconroy

app/(docs)/[[...slug]]/page.tsx

@@ -1,17 +1,14 @@
-import { getPageImageUrl, getPageMarkdownUrl, source } from '@/lib/source';
+import { getPageImageUrl, source } from '@/lib/source';
 import {
   DocsBody,
   DocsDescription,
   DocsPage,
   DocsTitle,
-  MarkdownCopyButton,
-  ViewOptionsPopover,
 } from 'fumadocs-ui/layouts/docs/page';
 import { notFound } from 'next/navigation';
 import { getMDXComponents } from '@/components/mdx';
 import type { Metadata } from 'next';
 import { createRelativeLink } from '@/lib/relative-link';
-import { gitConfig } from '@/lib/shared';
 
 // Routes carry the .html suffix of the legacy Read the Docs URLs
 // (/howto/select.html); page slugs in the source do not.
@@ -28,24 +25,11 @@ export default async function Page(props: PageProps<'/[[...slug]]'>) {
   if (!page) notFound();
 
   const MDX = page.data.body;
-  const markdownUrl = getPageMarkdownUrl(page).url;
-  // Per-release changelog pages are split out of reference/changelog.md by
-  // the ingest step; their upstream source is that one file.
-  const sourcePath = page.path.startsWith('reference/changelog/')
-    ? 'reference/changelog.md'
-    : page.path;
 
   return (
     <DocsPage toc={page.data.toc} full={page.data.full}>
       <DocsTitle>{page.data.title}</DocsTitle>
-      <DocsDescription className="mb-0">{page.data.description}</DocsDescription>
-      <div className="flex flex-row gap-2 items-center border-b pb-6">
-        <MarkdownCopyButton markdownUrl={markdownUrl} />
-        <ViewOptionsPopover
-          markdownUrl={markdownUrl}
-          githubUrl={`https://github.com/${gitConfig.user}/${gitConfig.repo}/blob/${gitConfig.branch}/docs/${sourcePath}`}
-        />
-      </div>
+      <DocsDescription>{page.data.description}</DocsDescription>
       <DocsBody>
         <MDX
           components={getMDXComponents({