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/disk-manager/format-disk/page.tsx

@@ -0,0 +1,275 @@
+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 CopyableCode from "@/components/CopyableCode"
+
+export async function generateMetadata({
+  params,
+}: {
+  params: Promise<{ locale: string }>
+}): Promise<Metadata> {
+  const { locale } = await params
+  const t = await getTranslations({ locale, namespace: "docs.diskManager.formatDisk.meta" })
+  return {
+    title: t("title"),
+    description: t("description"),
+    openGraph: {
+      title: t("ogTitle"),
+      description: t("ogDescription"),
+      type: "article",
+      url: "https://macrimi.github.io/ProxMenux/docs/disk-manager/format-disk",
+    },
+  }
+}
+
+type StringItem = string
+type ModeRow = { mode: string; part: string; data: string; useCase: string }
+type StepData = { title: string; body?: string; bodyRich?: string }
+type RelatedItem = { href: string; label: string; tail?: string }
+
+export default async function FormatDiskPage({
+  params,
+}: {
+  params: Promise<{ locale: string }>
+}) {
+  const { locale } = await params
+  setRequestLocale(locale)
+  const t = await getTranslations({ locale, namespace: "docs.diskManager.formatDisk" })
+
+  const messages = (await getMessages({ locale })) as unknown as {
+    docs: { diskManager: { formatDisk: {
+      visibility: { items: StringItem[]; safetyItems: StringItem[] }
+      modes: { rows: ModeRow[]; fullFormatItems: StringItem[] }
+      steps: { list: StepData[] }
+      related: { items: RelatedItem[] }
+    } } }
+  }
+  const visItems = messages.docs.diskManager.formatDisk.visibility.items
+  const safetyItems = messages.docs.diskManager.formatDisk.visibility.safetyItems
+  const modeRows = messages.docs.diskManager.formatDisk.modes.rows
+  const fullFormatItems = messages.docs.diskManager.formatDisk.modes.fullFormatItems
+  const stepList = messages.docs.diskManager.formatDisk.steps.list
+  const relatedItems = messages.docs.diskManager.formatDisk.related.items
+
+  const code = (chunks: React.ReactNode) => <code>{chunks}</code>
+  const strong = (chunks: React.ReactNode) => <strong>{chunks}</strong>
+  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="storage/format-disk.sh"
+      />
+
+      <Callout variant="danger" title={t("danger.title")}>
+        {t("danger.body")}
+      </Callout>
+
+      <h2 className="text-2xl font-semibold mt-10 mb-4 text-gray-900">{t("howRuns.heading")}</h2>
+      <p className="mb-4 text-gray-800 leading-relaxed">{t("howRuns.body")}</p>
+
+      <pre className="bg-gray-100 text-gray-800 p-4 rounded-md overflow-x-auto text-sm my-4 border border-gray-200 leading-snug">
+{`┌─────────────────────────────────────────────┐
+│  PHASE 1 — Filter, choose, confirm          │
+│  (nothing touched yet)                      │
+└──────────────────┬──────────────────────────┘
+                   ▼
+      Detect disks on host (lsblk)
+                   │
+                   ▼
+      Visibility filter
+      ├─ Hidden: root / swap / system-mounted
+      ├─ Hidden: active ZFS / LVM / RAID members
+      ├─ Hidden: referenced by any VM/LXC config
+      └─ Shown: fully free disks (⚠ for stale sigs)
+                   │
+                   ▼
+      User picks a disk
+                   │
+                   ▼
+      Operation mode
+      ├─ 1. Wipe all         (partitions + sigs)
+      ├─ 2. Remove FS labels (data preserved)
+      ├─ 3. Zero all data    (partitions kept)
+      └─ 4. Full format      (new GPT + mkfs)
+                   │
+                   ▼
+      Mode = 4? → extra questions
+      ├─ Filesystem: ext4 / xfs / exfat / btrfs
+      │    └─ if tool missing (mkfs.btrfs,
+      │       mkfs.exfat) → abort with hint
+      └─ Optional label
+                   │
+                   ▼
+      ╔════════════════════════════════════╗
+      ║  Double confirmation gate           ║
+      ║  (1) yes/no dialog with summary     ║
+      ║  (2) type the full disk path exactly║
+      ║      (e.g. /dev/sdc)                ║
+      ║  Any mismatch → abort               ║
+      ╚══════════════════╤═════════════════╝
+                         │
+  ┌──────── Cancel   OR   Confirm ────┐
+  ▼                                   ▼
+Exit, nothing        ┌─────────────────┴─────────────────┐
+was changed          │  PHASE 2 — Execute                 │
+                     └─────────────────┬─────────────────┘
+                                       ▼
+                       Pre-execution re-validation
+                       (state may have changed since
+                        Phase 1 — user just confirmed)
+                       ├─ Disk now hosts system mount?
+                       │    → hard block, abort
+                       ├─ Disk now in root ZFS pool?
+                       │    → hard block, abort
+                       ├─ Disk has active swap?
+                       │    → hard block, abort
+                       └─ Data partitions still mounted?
+                          → auto-unmount; abort if fails
+                                       │
+                                       ▼
+                       Run the selected mode:
+                       ┌─────────────────────────────────┐
+                       │ 1. Wipe all                     │
+                       │    wipefs -af <disk>            │
+                       │    sgdisk --zap-all <disk>      │
+                       ├─────────────────────────────────┤
+                       │ 2. Remove FS labels             │
+                       │    wipefs -af <disk>            │
+                       │    + wipefs -af each partition  │
+                       │    (partition table PRESERVED)  │
+                       ├─────────────────────────────────┤
+                       │ 3. Zero all data                │
+                       │    For each partition:          │
+                       │      dd if=/dev/zero of=<part>  │
+                       │         bs=4M                   │
+                       │    (partition table PRESERVED)  │
+                       ├─────────────────────────────────┤
+                       │ 4. Full format                  │
+                       │    wipefs -af <disk>            │
+                       │    sgdisk --zap-all <disk>      │
+                       │    sgdisk -n 1:0:0 -t 1:8300    │
+                       │      <disk>                     │
+                       │    mkfs.<fs> [-L <label>]       │
+                       │      <disk>1                    │
+                       └─────────────────────────────────┘
+                                       │
+                                       ▼
+                       Final summary (operation + disk +
+                       bytes touched if applicable)`}
+      </pre>
+
+      <h2 className="text-2xl font-semibold mt-10 mb-4 text-gray-900">{t("visibility.heading")}</h2>
+      <p className="mb-4 text-gray-800 leading-relaxed">{t("visibility.intro")}</p>
+      <ul className="list-disc pl-6 mb-4 text-gray-800 leading-relaxed space-y-1">
+        {visItems.map((_, idx) => (
+          <li key={idx}>{t.rich(`visibility.items.${idx}`, { strong, em })}</li>
+        ))}
+      </ul>
+
+      <Callout variant="warning" title={t("visibility.safetyTitle")}>
+        <ul className="mt-2 list-disc list-inside space-y-1">
+          {safetyItems.map((_, idx) => (
+            <li key={idx}>{t.rich(`visibility.safetyItems.${idx}`, { strong, em })}</li>
+          ))}
+        </ul>
+      </Callout>
+
+      <h2 className="text-2xl font-semibold mt-10 mb-4 text-gray-900">{t("modes.heading")}</h2>
+      <p className="mb-4 text-gray-800 leading-relaxed">{t("modes.intro")}</p>
+      <div className="overflow-x-auto mb-4 rounded-md border border-gray-200">
+        <table className="min-w-full text-sm">
+          <thead className="bg-gray-50 text-left text-gray-700">
+            <tr>
+              <th className="px-4 py-2 font-semibold">{t("modes.headerMode")}</th>
+              <th className="px-4 py-2 font-semibold">{t("modes.headerPart")}</th>
+              <th className="px-4 py-2 font-semibold">{t("modes.headerData")}</th>
+              <th className="px-4 py-2 font-semibold">{t("modes.headerUseCase")}</th>
+            </tr>
+          </thead>
+          <tbody className="divide-y divide-gray-200 text-gray-800">
+            {modeRows.map((row) => (
+              <tr key={row.mode}>
+                <td className="px-4 py-2 font-semibold">{row.mode}</td>
+                <td className="px-4 py-2">{row.part}</td>
+                <td className="px-4 py-2">{row.data}</td>
+                <td className="px-4 py-2">{row.useCase}</td>
+              </tr>
+            ))}
+          </tbody>
+        </table>
+      </div>
+
+      <p className="mb-4 text-gray-800 leading-relaxed">{t.rich("modes.fullFormatOutro", { strong })}</p>
+      <ul className="list-disc pl-6 mb-4 text-gray-800 leading-relaxed space-y-1">
+        {fullFormatItems.map((_, idx) => (
+          <li key={idx}>{t.rich(`modes.fullFormatItems.${idx}`, { strong, code })}</li>
+        ))}
+      </ul>
+
+      <h2 className="text-2xl font-semibold mt-10 mb-4 text-gray-900">{t("steps.heading")}</h2>
+
+      {stepList.map((step, idx) => (
+        <section key={idx} className="mt-8 border-b border-gray-200 pb-8">
+          <div className="flex items-center gap-3 mb-3">
+            <span className="inline-flex items-center rounded-full border border-blue-200 bg-blue-50 px-2.5 py-0.5 text-xs font-semibold text-blue-800">
+              {t("steps.stepLabel")} {idx + 1}
+            </span>
+            <h3 className="text-lg font-semibold text-gray-900 m-0">{step.title}</h3>
+          </div>
+          <div className="mb-4 text-gray-800 leading-relaxed">
+            {step.bodyRich ? (
+              <p>{t.rich(`steps.list.${idx}.bodyRich`, { strong, code })}</p>
+            ) : step.body && <p>{step.body}</p>}
+          </div>
+        </section>
+      ))}
+
+      <h2 className="text-2xl font-semibold mt-10 mb-4 text-gray-900">{t("manual.heading")}</h2>
+      <p className="mb-3 text-gray-800 leading-relaxed">{t("manual.body")}</p>
+      <CopyableCode code={`# --- mode 1: wipe all (partition table + signatures) ---
+wipefs -af /dev/sdX
+sgdisk --zap-all /dev/sdX
+
+# --- mode 2: remove FS labels only (keep partitions + data) ---
+wipefs -af /dev/sdX           # clears superblock signatures
+# (do NOT run sgdisk --zap-all; it would wipe the partition table)
+
+# --- mode 3: zero all data (keep partition table) ---
+for p in /dev/sdX?*; do
+  dd if=/dev/zero of="$p" bs=4M status=progress || true
+done
+
+# --- mode 4: full format (new GPT + filesystem) ---
+wipefs -af /dev/sdX
+sgdisk --zap-all /dev/sdX
+sgdisk -n 1:0:0 -t 1:8300 /dev/sdX         # one partition, Linux filesystem
+mkfs.ext4 -L mylabel /dev/sdX1             # pick the fs you want`} />
+
+      <Callout variant="troubleshoot" title={t("troubleshoot.notListedTitle")}>
+        {t.rich("troubleshoot.notListedBody", { code })}
+      </Callout>
+      <Callout variant="troubleshoot" title={t("troubleshoot.busyTitle")}>
+        {t.rich("troubleshoot.busyBody", { 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>
+  )
+}