fix(monitor): disk observations follow the disk, and OCI containers keep their address

- The observations of a disk belong to its serial number, not to its
  connector: a replaced disk starts clean, and the badge of the list
  counts what the detail of the disk lists.
- An OCI container is recognised while it is still being installed, so
  an image that carries Docker inside is not offered Docker.
- Links use the IPv4 address of a container and write IPv6 in brackets;
  an answer without an address of its own is read again.
- The Monitor restores, when it starts, the DHCP clients of containers
  that were started from it.

AppImage/components/lxc-app-panel.tsx

@@ -422,7 +422,8 @@ function buildWebUrl(ip: string | undefined | null, port: number | "", scheme?:
   const custom = (customUrl || "").trim()
   if (custom) return custom
   if (!ip || ip === "DHCP" || !port) return null
-  return `${scheme || defaultSchemeFor(port)}://${ip}:${port}`
+  const host = ip.includes(":") && !ip.startsWith("[") ? `[${ip}]` : ip
+  return `${scheme || defaultSchemeFor(port)}://${host}:${port}`
 }
 
 // Suggest a dpkg/apk package name from a friendly app name — lowercase,