fix(sdk): handle AI SDK APICallError status property for Claude OAuth errors

The AI SDK uses `status` instead of `statusCode` for HTTP status codes.
Updated getErrorStatusCode() to check both properties, ensuring proper
error handling and fallback behavior for Claude OAuth rate limits and
auth errors.

Author: jahooma

sdk/src/error-utils.ts

@@ -73,13 +73,24 @@ export function isRetryableStatusCode(statusCode: number | undefined): boolean {
 }
 
 /**
- * Extracts the statusCode from an error if available
+ * Extracts the statusCode from an error if available.
+ * Checks both 'statusCode' (our convention) and 'status' (AI SDK's APICallError convention).
  */
 export function getErrorStatusCode(error: unknown): number | undefined {
-  if (error && typeof error === 'object' && 'statusCode' in error) {
-    const statusCode = (error as { statusCode: unknown }).statusCode
-    if (typeof statusCode === 'number') {
-      return statusCode
+  if (error && typeof error === 'object') {
+    // Check 'statusCode' first (our convention)
+    if ('statusCode' in error) {
+      const statusCode = (error as { statusCode: unknown }).statusCode
+      if (typeof statusCode === 'number') {
+        return statusCode
+      }
+    }
+    // Check 'status' (AI SDK's APICallError uses this)
+    if ('status' in error) {
+      const status = (error as { status: unknown }).status
+      if (typeof status === 'number') {
+        return status
+      }
     }
   }
   return undefined

sdk/src/impl/llm.ts

@@ -18,6 +18,7 @@ import {
 import { AnalyticsEvent } from '@codebuff/common/constants/analytics-events'
 import { getModelForRequest, markClaudeOAuthRateLimited, fetchClaudeOAuthResetTime } from './model-provider'
 import { getValidClaudeOAuthCredentials } from '../credentials'
+import { getErrorStatusCode } from '../error-utils'
 
 import type { ModelRequestParams } from './model-provider'
 import type { OpenRouterProviderRoutingOptions } from '@codebuff/common/types/agent-template'
@@ -116,17 +117,15 @@ type OpenRouterUsageAccounting = {
 function isClaudeOAuthRateLimitError(error: unknown): boolean {
   if (!error || typeof error !== 'object') return false
 
-  // Check for APICallError from AI SDK
+  // Check status code (handles both 'status' from AI SDK and 'statusCode' from our errors)
+  const statusCode = getErrorStatusCode(error)
+  if (statusCode === 429) return true
+
+  // Check error message for rate limit indicators
   const err = error as {
-    statusCode?: number
     message?: string
     responseBody?: string
   }
-
-  // Check status code
-  if (err.statusCode === 429) return true
-
-  // Check error message for rate limit indicators
   const message = (err.message || '').toLowerCase()
   const responseBody = (err.responseBody || '').toLowerCase()
 
@@ -149,15 +148,15 @@ function isClaudeOAuthRateLimitError(error: unknown): boolean {
 function isClaudeOAuthAuthError(error: unknown): boolean {
   if (!error || typeof error !== 'object') return false
 
+  // Check status code (handles both 'status' from AI SDK and 'statusCode' from our errors)
+  const statusCode = getErrorStatusCode(error)
+  if (statusCode === 401 || statusCode === 403) return true
+
+  // Check error message for auth indicators
   const err = error as {
-    statusCode?: number
     message?: string
     responseBody?: string
   }
-
-  // 401 Unauthorized or 403 Forbidden typically indicate auth issues
-  if (err.statusCode === 401 || err.statusCode === 403) return true
-
   const message = (err.message || '').toLowerCase()
   const responseBody = (err.responseBody || '').toLowerCase()