Arcade and Classic skins, Network Hub and fleet calculator

What changed

Nyan Cat adds generated pixel artwork, rainbow frames and an arcade starfield to portal and manual themes; it joins all-theme cycling.

Classic adds a compact old-school in-game skin with red navigation, blue panels and bevel buttons.

Fleet Add to Calc loads that fleet as attacker and opens the calculator while preserving defender inputs.

Galaxy Forum appears under Foreign Affairs. Galaxy Status is renamed Network Hub across navigation and documentation.

Network Hub separates incoming, outgoing and returning fleets with an optional permission-aware alliance intel overlay.

Alliance Controlcenter Keyholders supports Owner-authorised passphrase disclosure to staff; rotating a key invalidates its previous disclosure phrase.

Multihunters has separate Raw access log and Multi subpages with staff-only access, account IP history and 30-day retention.

User Control Panel labels its portal appearance submenu Portal theme settings.