docs: promote /web from develop for backup-restore, Log2RAM and Network Flow guides

Brings 69 files from develop under /web/:
- Full Backup & Restore section (11 pages EN + ES: overview, how-it-works, destinations,
  creating backups, scheduled jobs, restoring, cross-kernel hydration)
- Log2RAM dedicated block in post-install/optional with commands + upstream link
- Network Flow diagram documented on monitor/dashboard/network
- Rewritten category descriptions in post-install/customizable
- Fixed automated.json thresholds + link to Log2RAM section
- Updated screenshots (network-flow-overview, storage-top-row, vms modals)

No code, config or AppImage binaries touched — /web/ scope only. Merging deploys
the documentation site to the current beta release notes.

web/app/[locale]/docs/post-install/storage/page.tsx

@@ -64,7 +64,15 @@ export default async function PostInstallStoragePage({
       />
 
       <Callout variant="info" title={t("intro.title")}>
-        {t.rich("intro.body", { strong })}
+        {t.rich("intro.body", {
+          strong,
+          code,
+          link: (chunks) => (
+            <Link href="/docs/post-install/optional#log2ram" className="text-blue-700 hover:underline">
+              {chunks}
+            </Link>
+          ),
+        })}
       </Callout>
 
       <Callout variant="warning" title={t("notTrackedTitle")}>