fix(cli-run): bounded shutdown wait for event stream processor

Prevents Run CLI from hanging indefinitely when the event stream
fails to close after abort.

Fixes #1825

Co-authored-by: cloudwaddie-agent <cloudwaddie-agent@users.noreply.github.com>

src/cli/run/runner.test.ts

@@ -1,6 +1,8 @@
-import { describe, it, expect } from "bun:test"
+/// <reference types="bun-types" />
+
+import { describe, it, expect, spyOn, afterEach } from "bun:test"
 import type { OhMyOpenCodeConfig } from "../../config"
-import { resolveRunAgent } from "./runner"
+import { resolveRunAgent, waitForEventProcessorShutdown } from "./runner"
 
 const createConfig = (overrides: Partial<OhMyOpenCodeConfig> = {}): OhMyOpenCodeConfig => ({
   ...overrides,
@@ -68,3 +70,58 @@ describe("resolveRunAgent", () => {
     expect(agent).toBe("hephaestus")
   })
 })
+
+describe("waitForEventProcessorShutdown", () => {
+  let consoleLogSpy: ReturnType<typeof spyOn<typeof console, "log">> | null = null
+
+  afterEach(() => {
+    if (consoleLogSpy) {
+      consoleLogSpy.mockRestore()
+      consoleLogSpy = null
+    }
+  })
+
+  it("returns quickly when event processor completes", async () => {
+    //#given
+    const eventProcessor = new Promise<void>((resolve) => {
+      setTimeout(() => {
+        resolve()
+      }, 25)
+    })
+    consoleLogSpy = spyOn(console, "log").mockImplementation(() => {})
+    const start = performance.now()
+
+    //#when
+    await waitForEventProcessorShutdown(eventProcessor, 200)
+
+    //#then
+    const elapsed = performance.now() - start
+    expect(elapsed).toBeLessThan(200)
+    expect(console.log).not.toHaveBeenCalledWith(
+      "[run] Event stream did not close within 200ms after abort; continuing shutdown.",
+    )
+  })
+
+  it("times out and continues when event processor does not complete", async () => {
+    //#given
+    const eventProcessor = new Promise<void>(() => {})
+    const spy = spyOn(console, "log").mockImplementation(() => {})
+    consoleLogSpy = spy
+    const timeoutMs = 50
+    const start = performance.now()
+
+    try {
+      //#when
+      await waitForEventProcessorShutdown(eventProcessor, timeoutMs)
+
+      //#then
+      const elapsed = performance.now() - start
+      expect(elapsed).toBeGreaterThanOrEqual(timeoutMs)
+      expect(spy).toHaveBeenCalledWith(
+        `[run] Event stream did not close within ${timeoutMs}ms after abort; continuing shutdown.`,
+      )
+    } finally {
+      spy.mockRestore()
+    }
+  })
+})

src/cli/run/runner.ts

@@ -12,6 +12,25 @@ import { pollForCompletion } from "./poll-for-completion"
 export { resolveRunAgent }
 
 const DEFAULT_TIMEOUT_MS = 600_000
+const EVENT_PROCESSOR_SHUTDOWN_TIMEOUT_MS = 2_000
+
+export async function waitForEventProcessorShutdown(
+  eventProcessor: Promise<void>,
+  timeoutMs = EVENT_PROCESSOR_SHUTDOWN_TIMEOUT_MS,
+): Promise<void> {
+  const completed = await Promise.race([
+    eventProcessor.then(() => true),
+    new Promise<boolean>((resolve) => setTimeout(() => resolve(false), timeoutMs)),
+  ])
+
+  if (!completed) {
+    console.log(
+      pc.dim(
+        `[run] Event stream did not close within ${timeoutMs}ms after abort; continuing shutdown.`,
+      ),
+    )
+  }
+}
 
 export async function run(options: RunOptions): Promise<number> {
   process.env.OPENCODE_CLI_RUN_MODE = "true"
@@ -87,7 +106,7 @@ export async function run(options: RunOptions): Promise<number> {
       // Abort the event stream to stop the processor
       abortController.abort()
 
-       await eventProcessor
+      await waitForEventProcessorShutdown(eventProcessor)
       cleanup()
 
       const durationMs = Date.now() - startTime
@@ -127,4 +146,3 @@ export async function run(options: RunOptions): Promise<number> {
     return 1
   }
 }
-