test(devframe): use getPort for rpc-streaming tests to prevent EADDRINUSE

Fixes test flakiness and EADDRINUSE errors in CI by switching from sequential static port assignment to dynamically resolving free random ports.

Author: antfubot

packages/devframe/src/node/__tests__/rpc-streaming.test.ts

@@ -11,10 +11,7 @@ import { RpcFunctionsHost } from '../host-functions'
 
 vi.stubGlobal('WebSocket', WebSocket)
 
-let nextPort = 41000
-function allocatePort(): number {
-  return nextPort++
-}
+import { getPort } from 'get-port-please'
 
 interface Harness {
   port: number
@@ -23,7 +20,7 @@ interface Harness {
 }
 
 async function bootHost(): Promise<Harness> {
-  const port = allocatePort()
+  const port = await getPort({ random: true })
   const mockContext = {} as DevframeNodeContext
   const rpcHost = new RpcFunctionsHost(mockContext)