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/layout.tsx

@@ -1,126 +1,22 @@
 import "./globals.css"
 import { Inter } from "next/font/google"
-import Navbar from "@/components/navbar"
-import MouseMoveEffect from "@/components/mouse-move-effect"
 import type React from "react"
 
 const inter = Inter({ subsets: ["latin"] })
 
-export const metadata = {
-  title: "ProxMenux - Menu-Driven Script for Proxmox VE Management",
-  generator: "Next.js",
-  applicationName: "ProxMenux",
-  referrer: "origin-when-cross-origin",
-  keywords: [
-    "Proxmox VE",
-    "Proxmox",
-    "PVE",
-    "ProxMenux",
-    "MacRimi",
-    "menu-driven",
-    "menu script",
-    "scripts",
-    "virtualization",
-    "automation",
-    "server management",
-    "VM management",
-    "container management",
-    "LXC",
-  ],
-  authors: [{ name: "MacRimi", url: "https://github.com/MacRimi" }],
-  creator: "MacRimi",
-  publisher: "MacRimi",
-  description:
-    "ProxMenux is a powerful menu-driven script for Proxmox VE management, designed to simplify and streamline the execution of commands and tasks. Manage VMs, containers, networking, storage, and more with an intuitive interface.",
-  formatDetection: {
-    email: false,
-    address: false,
-    telephone: false,
-  },
-  metadataBase: new URL("https://proxmenux.com"),
-  alternates: {
-    canonical: "https://proxmenux.com",
-  },
-  openGraph: {
-    title: "ProxMenux - Menu-Driven Script for Proxmox VE Management",
-    description:
-      "ProxMenux is a powerful menu-driven script for Proxmox VE management, designed to simplify and streamline the execution of commands and tasks. Manage VMs, containers, networking, storage, and more.",
-    url: "https://proxmenux.com",
-    siteName: "ProxMenux",
-    images: [
-      {
-        url: "https://proxmenux.com/main.png",
-        width: 1363,
-        height: 735,
-        alt: "ProxMenux - Proxmox VE Management Interface",
-      },
-    ],
-    locale: "en_US",
-    type: "website",
-  },
-  twitter: {
-    card: "summary_large_image",
-    title: "ProxMenux - Menu-Driven Script for Proxmox VE",
-    description:
-      "Powerful menu-driven script for Proxmox VE management. Simplify VM, container, networking, and storage management with an intuitive interface.",
-    images: ["https://proxmenux.com/main.png"],
-    creator: "@MacRimi",
-  },
-  robots: {
-    index: true,
-    follow: true,
-    googleBot: {
-      index: true,
-      follow: true,
-      "max-video-preview": -1,
-      "max-image-preview": "large",
-      "max-snippet": -1,
-    },
-  },
-  icons: {
-    icon: [
-      { url: "/favicon.ico", sizes: "any" },
-      { url: "/icon.svg", type: "image/svg+xml" },
-    ],
-    apple: [{ url: "/apple-touch-icon.png", sizes: "180x180" }],
-  },
-}
-
+/**
+ * Minimal root layout — the localized layout under [locale]/ does the
+ * real work (provider, navbar, etc.) but cannot own <html>/<body> tags
+ * because Next.js requires those at the root level. Lang is set to the
+ * default locale here and refined client-side from inside the locale
+ * layout so the page still renders correctly with JS disabled (defaults
+ * to English) and switches to the active locale once hydrated.
+ */
 export default function RootLayout({ children }: { children: React.ReactNode }) {
   return (
     <html lang="en" className="dark">
-      <head>
-        <script
-          type="application/ld+json"
-          dangerouslySetInnerHTML={{
-            __html: JSON.stringify({
-              "@context": "https://schema.org",
-              "@type": "SoftwareApplication",
-              name: "ProxMenux",
-              description:
-                "A powerful menu-driven script for Proxmox VE management, designed to simplify and streamline the execution of commands and tasks.",
-              applicationCategory: "DeveloperApplication",
-              operatingSystem: "Linux",
-              offers: {
-                "@type": "Offer",
-                price: "0",
-                priceCurrency: "USD",
-              },
-              author: {
-                "@type": "Person",
-                name: "MacRimi",
-                url: "https://github.com/MacRimi",
-              },
-              url: "https://proxmenux.com",
-              image: "https://proxmenux.com/main.png",
-            }),
-          }}
-        />
-      </head>
       <body className={`${inter.className} bg-background text-foreground antialiased`}>
-        <Navbar />
-        <MouseMoveEffect />
-        <div className="pt-16 md:pt-16">{children}</div>
+        {children}
       </body>
     </html>
   )