fix(opencode): retry xAI capacity stream errors (#43640)

Co-authored-by: rekram1-node <rekram1-node@users.noreply.github.com>

packages/opencode/src/provider/error.ts

@@ -144,6 +144,13 @@ export function parseStreamError(input: unknown): ParsedStreamError | undefined
         responseBody,
       }
   }
+
+  return {
+    type: "api_error",
+    message: typeof body?.error?.message === "string" ? body.error.message : "Server error.",
+    isRetryable: true,
+    responseBody,
+  }
 }
 
 export type ParsedAPICallError =

packages/opencode/src/session/retry.ts

@@ -37,6 +37,7 @@ const RETRYABLE_MESSAGE_PATTERNS = [
   /terminated|fetch failed|failed to fetch|network error|upstream connect|connection error|connection refused|connection lost|socket connection was closed|socket hang up|reset before headers|getaddrinfo|enotfound|eai_again|econnrefused|econnreset|etimedout/i,
   /^timeout$|\b(?:request|response|connection|network|stream|read) (?:timeout|timed out|time out)\b/i,
   /try your request again|retry your request|resource exhausted|resource_exhausted/i,
+  /\btry again (?:later|in\b)|\b(?:currently|temporarily) at capacity\b/i,
 ]
 
 function cap(ms: number) {