fix provider switch not presistingin session (#903)

* fix provider switch not presistingin session

* fix broken tests

src/utils/auth.ts

@@ -130,10 +130,18 @@ export function isAnthropicAuthEnabled(): boolean {
     apiKeyHelper ||
     process.env.CLAUDE_CODE_API_KEY_FILE_DESCRIPTOR
 
-  // Check if API key is from an external source (not managed by /login)
-  const { source: apiKeySource } = getAnthropicApiKeyWithSource({
-    skipRetrievingKeyFromApiKeyHelper: true,
-  })
+  // Check if API key is from an external source (not managed by /login).
+  // Predicate must not throw: getAnthropicApiKeyWithSource throws under
+  // CI/NODE_ENV=test when no key is configured, but here we just want to
+  // know the source — "no key" is a valid answer.
+  let apiKeySource: ApiKeySource
+  try {
+    ;({ source: apiKeySource } = getAnthropicApiKeyWithSource({
+      skipRetrievingKeyFromApiKeyHelper: true,
+    }))
+  } catch {
+    apiKeySource = 'none'
+  }
   const hasExternalApiKey =
     apiKeySource === 'ANTHROPIC_API_KEY' || apiKeySource === 'apiKeyHelper'
 
@@ -221,10 +229,17 @@ export function getAnthropicApiKey(): null | string {
 }
 
 export function hasAnthropicApiKeyAuth(): boolean {
-  const { key, source } = getAnthropicApiKeyWithSource({
-    skipRetrievingKeyFromApiKeyHelper: true,
-  })
-  return key !== null && source !== 'none'
+  // Predicate: never throw. getAnthropicApiKeyWithSource throws under
+  // CI/NODE_ENV=test when no key is configured — but "do we have auth?" is
+  // exactly the question that has to answer cleanly in that state.
+  try {
+    const { key, source } = getAnthropicApiKeyWithSource({
+      skipRetrievingKeyFromApiKeyHelper: true,
+    })
+    return key !== null && source !== 'none'
+  } catch {
+    return false
+  }
 }
 
 export function getAnthropicApiKeyWithSource(