feat: alive UI wave, galaxy presence, spread and fleet enhancements

Dashboard ambient layer, comrade presence, Mission Deck and War Room, Emberwake supply chain, spread/docs publishing, fleet policy and modules API, CI docker mining, and refreshed USB pack.

server/web/src/context/WebSocketContext.test.tsx

@@ -27,6 +27,7 @@ describe('WebSocketContext', () => {
       agentLogs: { 'agent-001-uuid': 'log line' },
       commandResults: [{ agent_id: 'a1', action: 'pause', success: true, _seq: 1 }],
       latestMessage: null,
+      sendDashboardMessage: () => {},
     };
 
     const wrapper = ({ children }: { children: React.ReactNode }) => (