BPS v0.15.1 - Burika favicon everywhere

Adds the Burika mark as the browser-tab favicon on every web surface: the Control Center concept pages and the live hub wall + probe radar (the client dashboard already had it). Hub pages embed the icon as a self-contained data URI so nothing extra ships to the VM.

EV-signed by BURIKA DATACENTRE SOLUTIONS (PTY) LTD.
SHA-256: A37527275E8E2055B287FB1147D41042AF334537120E2D43C93ACE1D07C43BCD