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/package.json

@@ -3,10 +3,14 @@
   "version": "0.1.0",
   "private": true,
   "scripts": {
+    "sync:scripts": "rm -rf public/scripts && rsync -a ../scripts/ public/scripts/",
+    "predev": "npm run sync:scripts",
     "dev": "next dev",
-    "build": "next build",
+    "prebuild": "npm run sync:scripts",
+    "build": "next build && pagefind --site out --output-path public/pagefind && cp -r public/pagefind out/pagefind",
     "start": "next start",
-    "lint": "next lint"
+    "lint": "next lint",
+    "index": "pagefind --site out --output-path public/pagefind && cp -r public/pagefind out/pagefind"
   },
   "dependencies": {
     "@hookform/resolvers": "^3.9.1",
@@ -43,31 +47,32 @@
     "cmdk": "1.0.4",
     "date-fns": "^2.30.0",
     "embla-carousel-react": "8.5.1",
+    "fs": "latest",
+    "gray-matter": "^4.0.3",
+    "html-react-parser": "^3.0.0",
     "input-otp": "1.4.1",
     "lucide-react": "^0.454.0",
-    "next": "14.2.16",
+    "mermaid": "^11.14.0",
+    "next": "15.5.15",
+    "next-intl": "^4.12.0",
     "next-themes": "^0.4.4",
-    "react": "^18",
-    "react-dom": "^18",
-    "react-day-picker": "^8.10.1",
+    "path": "latest",
+    "react": "^19",
+    "react-dom": "^19",
     "react-hook-form": "^7.54.1",
+    "react-markdown": "^9.0.0",
     "react-resizable-panels": "^2.1.7",
     "recharts": "2.15.0",
+    "remark": "latest",
+    "remark-breaks": "3.0.0",
+    "remark-gfm": "^4.0.0",
+    "remark-html": "latest",
+    "shiki": "^4.0.2",
     "sonner": "^1.7.1",
     "tailwind-merge": "^2.5.5",
     "tailwindcss-animate": "^1.0.7",
-    "vaul": "^0.9.6",
-    "zod": "^3.24.1",
-    "fs": "latest",
-    "path": "latest",
-    "remark": "latest",
-    "remark-html": "latest",
-    "react-markdown": "^9.0.0",
-    "remark-gfm": "^4.0.0",
     "unified": "^11.0.0",
-    "remark-breaks": "3.0.0",
-    "gray-matter": "^4.0.3",
-    "html-react-parser": "^3.0.0"
+    "zod": "^3.24.1"
   },
   "devDependencies": {
     "@tailwindcss/typography": "^0.5.10",