Point default CPA push target to https://cpa.nopj.cn.

Enable push by default with the new management secret so hosts inherit the nopj CPA endpoint.

config.json

@@ -33,8 +33,8 @@
     "cpa_auth_dir": "./cpa_auths",
     "cpa_base_url": "https://cli-chat-proxy.grok.com/v1",
     "cpa_push_enabled": true,
-    "cpa_remote_base": "https://cpaai.qxy1828.com",
-    "cpa_remote_secret": "sk-fuLgIiBOn6A7rYrMm",
+    "cpa_remote_base": "https://cpa.nopj.cn",
+    "cpa_remote_secret": "DNznuRVoBhDT2SpSAyWw",
     "cpa_remote_verify_tls": true,
     "cpa_push_proxy": "",
     "cpa_push_required": false,