fix: skip Anthropic preconnect for third-party providers (#309)

src/utils/apiPreconnect.ts

@@ -25,6 +25,7 @@
 
 import { getOauthConfig } from '../constants/oauth.js'
 import { isEnvTruthy } from './envUtils.js'
+import { getAPIProvider } from './model/providers.js'
 
 let fired = false
 
@@ -32,6 +33,11 @@ export function preconnectAnthropicApi(): void {
   if (fired) return
   fired = true
 
+  // Third-party providers should not warm a connection to Anthropic.
+  if (getAPIProvider() !== 'firstParty') {
+    return
+  }
+
   // Skip if using a cloud provider — different endpoint + auth
   if (
     isEnvTruthy(process.env.CLAUDE_CODE_USE_BEDROCK) ||