refine post-install and hardware GPU docs, Monitor UX and CLI styling

- rewrite the 15 post-install pages and the 3 hardware GPU pages so they reflect the current scripts (reversibility, tracked-tool counts, kernel parameters, per-tool commands, Alpine LXC propagation flow)
- migrate the legacy step-badge helper on post-install/optional and create-vm/synology to the canonical pill component, with the stepLabel key added in each locale
- fix rich-text i18n calls missing helpers across network, automated, optional, security, customization and the post-install landing pages, and escape the `<iface>` placeholder in automated so intl no longer parses it as a tag
- remove the mouse-follow blue overlay from the docs landing layout
- reposition the App-tab Edit button and stack the Search and Register controls vertically on mobile
- move the Bulk update Configure/Edit control into the section header so it behaves the same on desktop and mobile
- show a spinner during the final autoremove/autoclean pass of update-pve-safe so the cleanup step reads as active instead of silent
- restyle the shell spinner and msg_info in a distinctive purple and drop the unused msg_lang duplicate
- add a web-docs i18n build script and its CI workflow, plus tests for the pushover notification channel

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

@@ -52,6 +52,7 @@ export default async function PostInstallPerformancePage({
         title={t("header.title")}
         description={t("header.description")}
         section={t("header.section")}
+        estimatedMinutes={5}
       />
 
       <Callout variant="info" title={t("intro.title")}>
@@ -77,6 +78,10 @@ export default async function PostInstallPerformancePage({
 sed -i "s/#pigz:.*/pigz: 1/" /etc/vzdump.conf
 apt-get -y install pigz
 
+# The wrapper pins PATH so gzip resolves inside the script even under sudo,
+# and sets GZIP="-1" — fastest compression level, lowest ratio. The trade
+# is intentional: on multi-core hosts wall-clock time drops far more than
+# the archive grows.
 cat > /bin/pigzwrapper <<'EOF'
 #!/bin/sh
 PATH=/bin:$PATH
@@ -95,8 +100,8 @@ chmod +x /bin/pigzwrapper
         {t.rich("pigz.replacesBody", { code })}
       </Callout>
 
-      <Callout variant="danger" title={t("pigz.revertTitle")}>
-        {t.rich("pigz.revertBody", { strong })}
+      <Callout variant="tip" title={t("pigz.revertTitle")}>
+        {t.rich("pigz.revertBody", { strong, link: (chunks) => <Link href="/docs/post-install/uninstall" className="text-blue-600 hover:underline">{chunks}</Link>, code: (chunks) => <code>{chunks}</code> })}
       </Callout>
 
       <CopyableCode