complete i18n migration to /[locale]/ with EN+ES content

Full rewrite of the docs site under app/[locale]/ with next-intl
in localePrefix:"always" mode. Every page now exists at both
/en/<path> and /es/<path>; the root / shows a meta-refresh + JS
redirect to /<defaultLocale>/ so GitHub Pages serves something
on the apex URL.

Highlights:
- 107 doc pages migrated to file-per-page JSON namespaces under
  messages/en/ and messages/es/. Spanish content is fully
  translated (no copy-of-English placeholders).
- New documentation for the Active Suppressions section in the
  Settings tab and the per-event Dismiss dropdown in the Health
  Monitor modal.
- New screenshots: dismiss-duration-dropdown.png and an updated
  health-suppression-settings.png.
- Pagefind integrated for client-side search; index is built on
  every CI deploy (not committed).
- RSS feeds: per-locale at /<locale>/rss.xml plus root /rss.xml
  for backward compat.
- Removed the dead app/[locale]/guides/[slug]/ route — every
  guide now has its own static page and no markdown source
  remains.
- Fixed orphan link /guides/nvidia -> /guides/nvidia-manual in
  docs/hardware/nvidia-host.
- Removed obsolete components (footer2, calendar, drawer).

Verified locally with `npm ci && npm run build`: 2804 files in
out/, 231 pages indexed by pagefind, root redirect intact, both
locale roots and the new Active Suppressions docs render OK.

web/components/ui/command-table.tsx

@@ -0,0 +1,85 @@
+"use client"
+
+import React, { useState } from "react"
+import { Copy, Check } from "lucide-react"
+
+export interface CommandEntry {
+  command: string
+  description: string
+}
+
+export interface CommandGroup {
+  title: string
+  commands: CommandEntry[]
+}
+
+interface CommandTableProps {
+  groups: CommandGroup[]
+}
+
+function CopyButton({ text }: { text: string }) {
+  const [copied, setCopied] = useState(false)
+
+  const copyToClipboard = () => {
+    navigator.clipboard.writeText(text)
+    setCopied(true)
+    setTimeout(() => setCopied(false), 2000)
+  }
+
+  return (
+    <button
+      type="button"
+      onClick={copyToClipboard}
+      aria-label={copied ? "Copied" : "Copy to clipboard"}
+      className="inline-flex items-center gap-1 rounded-md border border-gray-200 bg-white px-2 py-1 text-xs text-gray-600 hover:border-blue-300 hover:bg-blue-50 hover:text-blue-700 transition-colors"
+    >
+      {copied ? (
+        <>
+          <Check className="h-3.5 w-3.5 text-emerald-600" aria-hidden />
+          <span>Copied</span>
+        </>
+      ) : (
+        <>
+          <Copy className="h-3.5 w-3.5" aria-hidden />
+          <span>Copy</span>
+        </>
+      )}
+    </button>
+  )
+}
+
+export const CommandTable: React.FC<CommandTableProps> = ({ groups }) => {
+  return (
+    <div className="space-y-8">
+      {groups.map((group, gi) => (
+        <section key={gi}>
+          <h2 className="text-xl font-semibold mt-6 mb-3 text-gray-900">{group.title}</h2>
+          <div className="overflow-x-auto">
+            <table className="w-full text-sm border border-gray-200 rounded-md">
+              <thead className="bg-gray-50 text-gray-900">
+                <tr>
+                  <th className="text-left px-3 py-2 border-b border-gray-200 w-2/5">Command</th>
+                  <th className="text-left px-3 py-2 border-b border-gray-200">Description</th>
+                  <th className="text-left px-3 py-2 border-b border-gray-200 w-24">Action</th>
+                </tr>
+              </thead>
+              <tbody className="text-gray-800">
+                {group.commands.map((cmd, ci) => (
+                  <tr key={ci} className="border-b border-gray-100 last:border-b-0">
+                    <td className="px-3 py-2 align-top font-mono text-xs whitespace-pre-wrap break-all">
+                      {cmd.command}
+                    </td>
+                    <td className="px-3 py-2 align-top text-gray-700">{cmd.description}</td>
+                    <td className="px-3 py-2 align-top">
+                      <CopyButton text={cmd.command} />
+                    </td>
+                  </tr>
+                ))}
+              </tbody>
+            </table>
+          </div>
+        </section>
+      ))}
+    </div>
+  )
+}