Merge pull request #11913 from Kilo-Org/understood-meerkat

fix(cli): retain shell output for fast-exiting commands

packages/opencode/src/tool/shell.ts

@@ -1,4 +1,4 @@
-import { Effect, Stream } from "effect"
+import { Effect, Fiber, Stream } from "effect" // kilocode_change - Fiber
 import os from "os"
 import { createWriteStream } from "node:fs"
 import * as Tool from "./tool"
@@ -548,7 +548,7 @@ export const ShellTool = Tool.define(
           yield* Effect.addFinalizer(closeSink)
           const handle = yield* spawner.spawn(cmd(input.shell, input.command, input.cwd, input.env))
 
-          yield* Effect.forkScoped(
+          const reader = yield* Effect.forkScoped( // kilocode_change - keep the fiber so trailing output can be drained
             Stream.runForEach(Stream.decodeText(handle.all), (chunk) => {
               const size = Buffer.byteLength(chunk, "utf-8")
               list.push({ text: chunk, size })
@@ -621,6 +621,12 @@ export const ShellTool = Tool.define(
             yield* handle.kill({ forceKillAfter: "3 seconds" }).pipe(Effect.orDie)
           }
 
+          // kilocode_change start - closing the scope interrupts the reader fiber, which can drop
+          // buffered output that arrived just before the process exited. Wait for the stream to
+          // finish (it ends once stdio closes) so fast commands do not lose their final chunks.
+          yield* Fiber.await(reader).pipe(Effect.timeout("3 seconds"), Effect.ignore)
+          // kilocode_change end
+
           return exit.kind === "exit" ? exit.code : null
         }),
       ).pipe(Effect.orDie)