core: close SSE stream when instance is disposed

packages/opencode/src/server/server.ts

@@ -43,7 +43,6 @@ import { Snapshot } from "@/snapshot"
 import { SessionSummary } from "@/session/summary"
 import { GlobalBus } from "@/bus/global"
 import { SessionStatus } from "@/session/status"
-import { ShareNext } from "@/share/share-next"
 
 // @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
@@ -2037,6 +2036,9 @@ export namespace Server {
               await stream.writeSSE({
                 data: JSON.stringify(event),
               })
+              if (event.type === Bus.InstanceDisposed.type) {
+                stream.close()
+              }
             })
             await new Promise<void>((resolve) => {
               stream.onAbort(() => {