fix: do not print ai sdk warnings (#4541)

Co-authored-by: Copilot <[email protected]>

packages/opencode/src/server/server.ts

@@ -42,6 +42,9 @@ import { SessionSummary } from "@/session/summary"
 import { GlobalBus } from "@/bus/global"
 import { SessionStatus } from "@/session/status"
 
+// @ts-ignore This global is needed to prevent ai-sdk from logging warnings to stdout https://github.com/vercel/ai/blob/2dc67e0ef538307f21368db32d5a12345d98831b/packages/ai/src/logger/log-warnings.ts#L85
+globalThis.AI_SDK_LOG_WARNINGS = false
+
 const ERRORS = {
   400: {
     description: "Bad request",