fix: ensure openai 404 errors are retried (#10590)

packages/opencode/test/session/retry.test.ts

@@ -1,4 +1,5 @@
 import { describe, expect, test } from "bun:test"
+import { APICallError } from "ai"
 import { SessionRetry } from "../../src/session/retry"
 import { MessageV2 } from "../../src/session/message-v2"
 
@@ -128,4 +129,18 @@ describe("session.message-v2.fromError", () => {
     expect(retryable).toBeDefined()
     expect(retryable).toBe("Connection reset by server")
   })
+
+  test("marks OpenAI 404 status codes as retryable", () => {
+    const error = new APICallError({
+      message: "boom",
+      url: "https://api.openai.com/v1/chat/completions",
+      requestBodyValues: {},
+      statusCode: 404,
+      responseHeaders: { "content-type": "application/json" },
+      responseBody: "{\"error\":\"boom\"}",
+      isRetryable: false,
+    })
+    const result = MessageV2.fromError(error, { providerID: "openai" }) as MessageV2.APIError
+    expect(result.data.isRetryable).toBe(true)
+  })
 })