交易所 API 改为仅服务器配置：前端去掉密钥、新机示例为空，并防止坏钥反复请求触发 Gate 封 IP。

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/test_instance_display_env_settings.py

@@ -125,7 +125,10 @@ class TestEnvSchema(unittest.TestCase):
         self.assertTrue(by_key["OKX_SHOW_PERP_FUNDS"].get("hot_reload"))
         self.assertNotIn("OKX_OPTIONS_API_KEY", by_key)
         self.assertNotIn("OKX_SUB_ACCOUNT_NAME", by_key)
-        self.assertEqual(by_key["OKX_API_KEY"]["note"], "账户 API(永续+期权共用)")
+        self.assertNotIn("OKX_API_KEY", by_key)
+        self.assertNotIn("OKX_API_SECRET", by_key)
+        self.assertNotIn("OKX_API_PASSPHRASE", by_key)
+        self.assertIn("LIVE_TRADING_ENABLED", by_key)
 
         groups_v = [{"title": "t", "fields": [by_key["TRADE_DIRECTION"]]}]
         clean, errors = validate_env_updates(groups_v, {"TRADE_DIRECTION": "long_only"})