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/script-viewer.tsx

@@ -0,0 +1,54 @@
+import { ExternalLink } from "lucide-react"
+import { cn } from "@/lib/utils"
+
+interface ScriptViewerProps {
+  scriptPath: string
+  githubRepo?: string
+  githubBranch?: string
+  className?: string
+}
+
+const DEFAULT_REPO = "MacRimi/ProxMenux"
+const DEFAULT_BRANCH = "main"
+
+// Top-level repo directories. When a `scriptPath` starts with any of
+// these, we treat it as already-relative-to-repo-root and skip the
+// implicit `scripts/` prefix. Bash scripts under `scripts/` (the
+// majority of doc pages) keep working as before — they don't start
+// with one of these prefixes.
+const REPO_ROOTS = ["AppImage/", "web/", "menu", "json/", "guides/", "lang/", "images/"]
+
+function buildScriptHref(scriptPath: string, repo: string, branch: string): string {
+  const isRepoAbsolute = REPO_ROOTS.some((r) => scriptPath.startsWith(r))
+  const path = isRepoAbsolute ? scriptPath : `scripts/${scriptPath}`
+  return `https://github.com/${repo}/blob/${branch}/${path}`
+}
+
+export function ScriptViewer({
+  scriptPath,
+  githubRepo = DEFAULT_REPO,
+  githubBranch = DEFAULT_BRANCH,
+  className,
+}: ScriptViewerProps) {
+  const filename = scriptPath.split("/").pop() || scriptPath
+  const githubUrl = buildScriptHref(scriptPath, githubRepo, githubBranch)
+  const isRepoAbsolute = REPO_ROOTS.some((r) => scriptPath.startsWith(r))
+  const titlePath = isRepoAbsolute ? scriptPath : `scripts/${scriptPath}`
+
+  return (
+    <a
+      href={githubUrl}
+      target="_blank"
+      rel="noopener noreferrer"
+      className={cn(
+        "inline-flex items-center gap-1.5 rounded-full border border-emerald-300 bg-emerald-50 px-2.5 py-0.5 text-xs font-medium text-emerald-800 transition-colors hover:border-emerald-400 hover:bg-emerald-100",
+        className,
+      )}
+      aria-label={`View ${filename} on GitHub (opens in a new tab)`}
+      title={`${titlePath} — opens on GitHub in a new tab`}
+    >
+      <ExternalLink className="h-3.5 w-3.5" aria-hidden="true" />
+      View script
+    </a>
+  )
+}