Build 2602262030: add magent settings and hardening

frontend/app/lib/auth.ts

@@ -23,3 +23,18 @@ export const authFetch = (input: RequestInfo | URL, init?: RequestInit) => {
   }
   return fetch(input, { ...init, headers })
 }
+
+export const getEventStreamToken = async () => {
+  const baseUrl = getApiBase()
+  const response = await authFetch(`${baseUrl}/auth/stream-token`)
+  if (!response.ok) {
+    const text = await response.text()
+    throw new Error(text || `Stream token request failed: ${response.status}`)
+  }
+  const data = await response.json()
+  const token = typeof data?.stream_token === 'string' ? data.stream_token : ''
+  if (!token) {
+    throw new Error('Stream token not returned')
+  }
+  return token
+}