tweak: retry logic to catch certain provider problems

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

@@ -1,4 +1,5 @@
 import { describe, expect, test } from "bun:test"
+import type { NamedError } from "@opencode-ai/util/error"
 import { APICallError } from "ai"
 import { SessionRetry } from "../../src/session/retry"
 import { MessageV2 } from "../../src/session/message-v2"
@@ -11,6 +12,10 @@ function apiError(headers?: Record<string, string>): MessageV2.APIError {
   }).toObject() as MessageV2.APIError
 }
 
+function wrap(message: unknown): ReturnType<NamedError["toObject"]> {
+  return { data: { message } } as ReturnType<NamedError["toObject"]>
+}
+
 describe("session.retry.delay", () => {
   test("caps delay at 30 seconds when headers missing", () => {
     const error = apiError()
@@ -81,6 +86,28 @@ describe("session.retry.delay", () => {
   })
 })
 
+describe("session.retry.retryable", () => {
+  test("maps too_many_requests json messages", () => {
+    const error = wrap(JSON.stringify({ type: "error", error: { type: "too_many_requests" } }))
+    expect(SessionRetry.retryable(error)).toBe("Too Many Requests")
+  })
+
+  test("maps overloaded provider codes", () => {
+    const error = wrap(JSON.stringify({ code: "resource_exhausted" }))
+    expect(SessionRetry.retryable(error)).toBe("Provider is overloaded")
+  })
+
+  test("handles json messages without code", () => {
+    const error = wrap(JSON.stringify({ error: { message: "no_kv_space" } }))
+    expect(SessionRetry.retryable(error)).toBe("Provider Server Error")
+  })
+
+  test("returns undefined for non-json message", () => {
+    const error = wrap("not-json")
+    expect(SessionRetry.retryable(error)).toBeUndefined()
+  })
+})
+
 describe("session.message-v2.fromError", () => {
   test.concurrent(
     "converts ECONNRESET socket errors to retryable APIError",