feat: T1016 dns_config probe + server-side drift detection + Crucible DNS DRIFT badge

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

@@ -0,0 +1,43 @@
+/**
+ * @vitest-environment happy-dom
+ */
+import { describe, expect, it } from 'vitest';
+import { renderHook } from '@testing-library/react';
+import { WebSocketContext, useWebSocketContext } from './WebSocketContext';
+import { mockAgent } from '../test/fixtures';
+
+describe('WebSocketContext', () => {
+  it('useWebSocketContext returns default value outside provider', () => {
+    const { result } = renderHook(() => useWebSocketContext());
+
+    expect(result.current.isConnected).toBe(false);
+    expect(result.current.agents).toEqual([]);
+    expect(result.current.commandResults).toEqual([]);
+    expect(result.current.latestMessage).toBeNull();
+  });
+
+  it('useWebSocketContext reads provider value', () => {
+    const value = {
+      isConnected: true,
+      agents: [mockAgent()],
+      recentShares: [],
+      fleetAlerts: [],
+      poolStatus: [],
+      aiActivity: [],
+      agentLogs: { 'agent-001-uuid': 'log line' },
+      commandResults: [{ agent_id: 'a1', action: 'pause', success: true, _seq: 1 }],
+      latestMessage: null,
+    };
+
+    const wrapper = ({ children }: { children: React.ReactNode }) => (
+      <WebSocketContext.Provider value={value}>{children}</WebSocketContext.Provider>
+    );
+
+    const { result } = renderHook(() => useWebSocketContext(), { wrapper });
+
+    expect(result.current.isConnected).toBe(true);
+    expect(result.current.agents).toHaveLength(1);
+    expect(result.current.agentLogs['agent-001-uuid']).toBe('log line');
+    expect(result.current.commandResults[0]._seq).toBe(1);
+  });
+});