fix(codebuddy): dodge Tencent filter for CN, add usage tracking & normalize messages for INT

Neutralize CLI-agent system prompts that trigger CodeBuddy CN's content filter, add usage/quota tracking for codebuddy-intl sharing CN's logic, and normalize codebuddy-intl request messages to the shape it expects.

open-sse/providers/registry/codebuddy-intl.js

@@ -38,6 +38,10 @@ export default {
       header: "Authorization",
       scheme: "bearer",
     },
+    // Intl billing endpoint mirrors CN shape (data.Response.Data.Accounts[]).
+    usage: {
+      url: "https://www.codebuddy.ai/v2/billing/meter/get-user-resource",
+    },
   },
   // Same model lineup exposed by the CN gateway — intl backend is the same catalog.
   models: [