fix(framework): kick_server 终止不重连(对齐真实客户端)

收到 kick_server 时 emit kicked 并 stop()，不再 onClose→重连→重踢空转。
kick 处理移出登录门控，登录态内外一致。

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

cocoscreator_projects/framework-tests/net/net-client.test.ts

@@ -124,6 +124,24 @@ test('TcpID 去重：旧连接的残留包被丢弃', async () => {
   assert.equal(messages.length, 0);
 });
 
+test('kick_server：emit kicked 且不再自动重连', async () => {
+  const t1 = new FakeTransport(), t2 = new FakeTransport();
+  const { clock, advance } = fakeClock();
+  const client = makeClient([t1, t2], clock);
+  let kicked = 0;
+  client.on('kicked', () => { kicked++; });
+  client.start();
+  await t1.flush();
+  // 服务器踢人（登录态期间）
+  t1.serverPush(JSON.stringify({ route: 'agent', rpc: 'kick_server', data: { msg: 'x' } }));
+  await t1.flush();
+  assert.equal(kicked, 1);
+  // 推进重连/超时定时器 → 不应建立新连接或重发 login
+  advance(30000); advance(10000);
+  await t2.flush();
+  assert.equal(t2.sent.length, 0);
+});
+
 test('debug=true 记录 send 与 recv（注入 logger）', async () => {
   const t = new FakeTransport();
   const { clock } = fakeClock();