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/app/[locale]/docs/help-info/gpu-commands/page.tsx

@@ -0,0 +1,100 @@
+import type { Metadata } from "next"
+import { getTranslations, getMessages, setRequestLocale } from "next-intl/server"
+import { Link } from "@/i18n/navigation"
+import { DocHeader } from "@/components/ui/doc-header"
+import { Callout } from "@/components/ui/callout"
+import { CommandTable, type CommandGroup } from "@/components/ui/command-table"
+
+export async function generateMetadata({
+  params,
+}: {
+  params: Promise<{ locale: string }>
+}): Promise<Metadata> {
+  const { locale } = await params
+  const t = await getTranslations({ locale, namespace: "docs.helpInfo.gpuCommands.meta" })
+  return {
+    title: t("title"),
+    description: t("description"),
+    keywords: [
+      "proxmox gpu passthrough",
+      "qm hostpci",
+      "vfio proxmox",
+      "iommu proxmox",
+      "lspci proxmox",
+      "proxmox nvidia passthrough",
+      "proxmox amd passthrough",
+      "proxmox intel iommu",
+      "intel_iommu proxmox",
+    ],
+    alternates: { canonical: "https://proxmenux.com/docs/help-info/gpu-commands" },
+    openGraph: {
+      title: t("ogTitle"),
+      description: t("ogDescription"),
+      type: "article",
+      url: "https://proxmenux.com/docs/help-info/gpu-commands",
+    },
+    twitter: {
+      card: "summary",
+      title: t("twitterTitle"),
+      description: t("twitterDescription"),
+    },
+  }
+}
+
+type RelatedItem = { href: string; label: string; tail?: string }
+
+export default async function GPUPassthroughPage({
+  params,
+}: {
+  params: Promise<{ locale: string }>
+}) {
+  const { locale } = await params
+  setRequestLocale(locale)
+  const t = await getTranslations({ locale, namespace: "docs.helpInfo.gpuCommands" })
+
+  const messages = (await getMessages({ locale })) as unknown as {
+    docs: { helpInfo: { gpuCommands: {
+      commandGroups: CommandGroup[]
+      related: { items: RelatedItem[] }
+    } } }
+  }
+  const commandGroups = messages.docs.helpInfo.gpuCommands.commandGroups
+  const relatedItems = messages.docs.helpInfo.gpuCommands.related.items
+
+  const code = (chunks: React.ReactNode) => <code>{chunks}</code>
+  const em = (chunks: React.ReactNode) => <em>{chunks}</em>
+
+  return (
+    <div>
+      <DocHeader
+        title={t("header.title")}
+        description={t("header.description")}
+        section={t("header.section")}
+        estimatedMinutes={5}
+        scriptPath="help_info_menu.sh"
+      />
+
+      <Callout variant="info" title={t("intro.title")}>
+        {t.rich("intro.body", { em, code })}
+      </Callout>
+
+      <CommandTable groups={commandGroups} />
+
+      <Callout variant="tip" title={t("afterChangesTip.title")}>
+        {t.rich("afterChangesTip.bodyRich", { code })}
+      </Callout>
+
+      <h2 className="text-2xl font-semibold mt-10 mb-4 text-gray-900">{t("related.heading")}</h2>
+      <ul className="list-disc pl-6 text-gray-800 leading-relaxed space-y-1">
+        {relatedItems.map((item) => (
+          <li key={item.href}>
+            <Link href={item.href} className="text-blue-600 hover:underline">
+              {item.label}
+            </Link>
+            {item.tail}
+          </li>
+        ))}
+      </ul>
+    </div>
+  )
+}