fix(provider): handle SSE reader cancel rejections (#44944)

packages/core/src/aisdk.ts

@@ -35,7 +35,7 @@ function wrapSSE(res: Response, ms: number, ctl: AbortController) {
         const id = setTimeout(() => {
           const err = new Error("SSE read timed out")
           ctl.abort(err)
-          void reader.cancel(err)
+          reader.cancel(err).catch(() => {})
           reject(err)
         }, ms)
 

packages/opencode/src/provider/provider.ts

@@ -46,7 +46,7 @@ function wrapSSE(res: Response, ms: number, ctl: AbortController) {
         const id = setTimeout(() => {
           const err = new ProviderError.ResponseStreamError("SSE read timed out")
           ctl.abort(err)
-          void reader.cancel(err)
+          reader.cancel(err).catch(() => {})
           reject(err)
         }, ms)
 

packages/opencode/test/server/httpapi-v2-pty.test.ts

@@ -81,7 +81,7 @@ describe("v2 pty HttpApi", () => {
     expect(body.data.title).toBe("v2")
 
     // The canonical surface keeps exited sessions observable with their exit code.
-    const deadline = Date.now() + 5_000
+    const deadline = Date.now() + 20_000
     let info: { status: string; exitCode?: number } | undefined
     while (Date.now() < deadline) {
       const found = await request(`/api/pty/${body.data.id}`, tmp.path)