Filter bar gets an Inbound select next to Protocol — the dropdown is
narrowed to inbounds matching the chosen protocol (or shows everything
when no protocol is picked), with remark search inside the dropdown.
Choosing a protocol clears any inbound selection that no longer fits.
Server side, ClientPageParams gains an Inbound int and ListPaged runs a
clientMatchesInbound check after the protocol filter. The selection
persists in clientsFilterState localStorage alongside the existing
search/filter/protocol entries.
Mobile clients view also grows the AntD Pagination control that was
previously only on the desktop table, so page size / page navigation
are reachable from phones.