cli/run: switch to global event stream (#26383)

packages/opencode/src/cli/cmd/run/runtime.ts

@@ -487,6 +487,7 @@ async function runInteractiveRuntime(input: RunRuntimeInput): Promise<void> {
 
           const handle = await mod.createSessionTransport({
             sdk: ctx.sdk,
+            directory: ctx.directory,
             sessionID: state.sessionID,
             thinking: input.thinking,
             limits: () => state.limits,

packages/opencode/src/cli/cmd/run/stream.transport.ts

@@ -1,8 +1,9 @@
-// SDK event subscription and prompt turn coordination.
+// Global event subscription and prompt turn coordination.
 //
-// Creates a long-lived event stream subscription and feeds every event
-// through the session-data reducer. The reducer produces scrollback commits
-// and footer patches, which get forwarded to the footer through stream.ts.
+// Creates a long-lived global event stream subscription and feeds relevant
+// events for the current session tree through the reducers. The reducers
+// produce scrollback commits and footer patches, which get forwarded to the
+// footer through stream.ts.
 //
 // Prompt turns are one-at-a-time: runPromptTurn() sends the prompt to the
 // SDK, arms a deferred Wait, and resolves when the session becomes idle.
@@ -14,7 +15,7 @@
 // The tick counter prevents stale idle events from resolving the wrong turn.
 // We also re-check live session status before resolving an idle event so a
 // delayed idle from an older turn cannot complete a newer busy turn.
-import type { Event, OpencodeClient } from "@opencode-ai/sdk/v2"
+import type { Event, GlobalEvent, OpencodeClient } from "@opencode-ai/sdk/v2"
 import { Context, Deferred, Effect, Exit, Layer, Scope, Stream } from "effect"
 import { makeRuntime } from "@/effect/run-service"
 import {
@@ -62,6 +63,7 @@ type Trace = {
 
 type StreamInput = {
   sdk: OpencodeClient
+  directory?: string
   sessionID: string
   thinking: boolean
   limits: () => Record<string, number>
@@ -151,6 +153,40 @@ function isEvent(value: unknown): value is Event {
   return typeof type === "string" && !!properties && typeof properties === "object"
 }
 
+function isGlobalEvent(value: unknown): value is GlobalEvent {
+  if (!value || typeof value !== "object" || Array.isArray(value)) {
+    return false
+  }
+
+  const payload = Reflect.get(value, "payload")
+  return !!payload && typeof payload === "object"
+}
+
+function globalPayloadEvent(value: unknown): Event | undefined {
+  if (!isGlobalEvent(value)) {
+    return undefined
+  }
+
+  const payload = value.payload
+  if (payload.type === "sync") {
+    return undefined
+  }
+
+  return isEvent(payload) ? payload : undefined
+}
+
+function isMatchingDisposeEvent(value: unknown, directory: string | undefined): boolean {
+  if (!directory || !isGlobalEvent(value)) {
+    return false
+  }
+
+  if (value.directory !== directory) {
+    return false
+  }
+
+  return value.payload.type === "server.instance.disposed"
+}
+
 function active(event: Event, sessionID: string): boolean {
   if (sid(event) !== sessionID) {
     return false
@@ -371,7 +407,7 @@ function createLayer(input: StreamInput) {
         const events = yield* Scope.provide(scope)(
           Effect.acquireRelease(
             Effect.promise(() =>
-              input.sdk.event.subscribe(undefined, {
+              input.sdk.global.event({
                 signal: abort.signal,
               }),
             ),
@@ -397,7 +433,6 @@ function createLayer(input: StreamInput) {
           blockers: new Map(),
         }
         const recovering = new Set<string>()
-
         const currentSubagentState = () => {
           if (state.selectedSubagent && !state.subagent.tabs.has(state.selectedSubagent)) {
             state.selectedSubagent = undefined
@@ -526,6 +561,38 @@ function createLayer(input: StreamInput) {
             Effect.orElseSucceed(() => []),
           )
 
+        const bootstrapSubagentHistory = Effect.fn("RunStreamTransport.bootstrapSubagentHistory")(
+          function* (sessions: string[]) {
+            yield* Effect.forEach(
+              sessions,
+              (sessionID) =>
+                messages(sessionID, SUBAGENT_CALL_BOOTSTRAP_LIMIT).pipe(
+                  Effect.tap((messagesList) =>
+                    Effect.sync(() => {
+                      if (
+                        !bootstrapSubagentCalls({
+                          data: state.subagent,
+                          sessionID,
+                          messages: messagesList,
+                          thinking: input.thinking,
+                          limits: input.limits(),
+                        })
+                      ) {
+                        return
+                      }
+
+                      syncFooter([], undefined, currentSubagentState())
+                    }),
+                  ),
+                ),
+              {
+                concurrency: 4,
+                discard: true,
+              },
+            )
+          },
+        )
+
         const bootstrap = Effect.fn("RunStreamTransport.bootstrap")(function* () {
           const [messagesList, children, permissions, questions] = yield* Effect.all(
             [
@@ -566,33 +633,6 @@ function createLayer(input: StreamInput) {
             questions,
           })
 
-          const sessions = [
-            ...new Set(
-              listSubagentPermissions(state.subagent)
-                .filter((item) => item.tool && item.metadata?.input === undefined)
-                .map((item) => item.sessionID),
-            ),
-          ]
-          yield* Effect.forEach(
-            sessions,
-            (sessionID) =>
-              messages(sessionID, SUBAGENT_CALL_BOOTSTRAP_LIMIT).pipe(
-                Effect.tap((messagesList) =>
-                  Effect.sync(() => {
-                    bootstrapSubagentCalls({
-                      data: state.subagent,
-                      sessionID,
-                      messages: messagesList,
-                    })
-                  }),
-                ),
-              ),
-            {
-              concurrency: "unbounded",
-              discard: true,
-            },
-          )
-
           for (const request of [
             ...state.data.permissions,
             ...listSubagentPermissions(state.subagent),
@@ -605,6 +645,13 @@ function createLayer(input: StreamInput) {
           const snapshot = currentSubagentState()
           traceTabs(input.trace, [], snapshot.tabs)
           syncFooter([], undefined, snapshot)
+
+          const sessions = [...state.subagent.tabs.keys()]
+          if (sessions.length === 0) {
+            return
+          }
+
+          yield* bootstrapSubagentHistory(sessions).pipe(Effect.forkIn(scope, { startImmediately: true }), Effect.asVoid)
         })
 
         const idle = Effect.fn("RunStreamTransport.idle")((fallback: boolean) =>
@@ -700,11 +747,22 @@ function createLayer(input: StreamInput) {
                   return
                 }
 
-                if (!isEvent(item)) {
+                if (isMatchingDisposeEvent(item, input.directory)) {
+                  yield* fail(new Error("instance disposed"))
+                  yield* closeScope()
+                  return
+                }
+
+                const event = globalPayloadEvent(item)
+                if (!event) {
+                  return
+                }
+
+                const sessionID = sid(event)
+                if (sessionID !== input.sessionID && (!sessionID || !state.subagent.tabs.has(sessionID))) {
                   return
                 }
 
-                const event = item
                 input.trace?.write("recv.event", event)
                 trackBlocker(event)
 
@@ -754,7 +812,7 @@ function createLayer(input: StreamInput) {
             Effect.ensuring(
               Effect.gen(function* () {
                 if (!abort.signal.aborted && !state.fault) {
-                  yield* fail(new Error("session event stream closed"))
+                  yield* fail(new Error("global event stream closed"))
                 }
                 closeStream()
               }),

packages/opencode/src/cli/cmd/run/subagent-data.ts

@@ -1,4 +1,4 @@
-import type { Event, Part, PermissionRequest, QuestionRequest, ToolPart } from "@opencode-ai/sdk/v2"
+import type { Event, Message, Part, PermissionRequest, QuestionRequest, ToolPart } from "@opencode-ai/sdk/v2"
 import * as Locale from "@/util/locale"
 import {
   bootstrapSessionData,
@@ -22,6 +22,10 @@ type SessionMessage = {
   parts: Part[]
 }
 
+type BootstrapChildMessage = SessionMessage & {
+  info: Message
+}
+
 type Frame = {
   key: string
   commit: StreamCommit
@@ -513,6 +517,70 @@ function applyChildEvent(input: {
   return changed || queueChanged(input.detail.data, before)
 }
 
+function bootstrapChildEvent(input: {
+  detail: DetailState
+  event: Event
+  thinking: boolean
+  limits: Record<string, number>
+}) {
+  const out = reduceSessionData({
+    data: input.detail.data,
+    event: input.event,
+    sessionID: input.detail.sessionID,
+    thinking: input.thinking,
+    limits: input.limits,
+  })
+
+  return appendCommits(input.detail, out.commits)
+}
+
+function bootstrapChildMessages(input: {
+  detail: DetailState
+  messages: BootstrapChildMessage[]
+  thinking: boolean
+  limits: Record<string, number>
+}) {
+  let changed = false
+
+  for (const message of input.messages) {
+    changed =
+      bootstrapChildEvent({
+        detail: input.detail,
+        event: {
+          id: `bootstrap:message:${message.info.id}`,
+          type: "message.updated",
+          properties: {
+            sessionID: input.detail.sessionID,
+            info: message.info,
+          },
+        },
+        thinking: input.thinking,
+        limits: input.limits,
+      }) || changed
+
+    for (const part of message.parts) {
+      changed =
+        bootstrapChildEvent({
+          detail: input.detail,
+          event: {
+            id: `bootstrap:part:${part.id}`,
+            type: "message.part.updated",
+            properties: {
+              sessionID: input.detail.sessionID,
+              part,
+              time: 0,
+            },
+          },
+          thinking: input.thinking,
+          limits: input.limits,
+        }) || changed
+    }
+  }
+
+  compactDetail(input.detail)
+  return changed
+}
+
 function knownSession(data: SubagentData, sessionID: string) {
   return data.tabs.has(sessionID)
 }
@@ -634,7 +702,13 @@ export function bootstrapSubagentData(input: BootstrapSubagentInput) {
   return changed
 }
 
-export function bootstrapSubagentCalls(input: { data: SubagentData; sessionID: string; messages: SessionMessage[] }) {
+export function bootstrapSubagentCalls(input: {
+  data: SubagentData
+  sessionID: string
+  messages: BootstrapChildMessage[]
+  thinking: boolean
+  limits: Record<string, number>
+}) {
   if (!knownSession(input.data, input.sessionID) || input.messages.length === 0) {
     return false
   }
@@ -648,9 +722,14 @@ export function bootstrapSubagentCalls(input: { data: SubagentData; sessionID: s
     permissions: detail.data.permissions,
     questions: detail.data.questions,
   })
-  compactDetail(detail)
+  const changed = bootstrapChildMessages({
+    detail,
+    messages: input.messages,
+    thinking: input.thinking,
+    limits: input.limits,
+  })
 
-  return beforeCallCount !== detail.data.call.size || queueChanged(detail.data, before)
+  return changed || beforeCallCount !== detail.data.call.size || queueChanged(detail.data, before)
 }
 
 export function clearFinishedSubagents(data: SubagentData) {

packages/opencode/test/cli/run/stream.transport.test.ts

@@ -1,9 +1,10 @@
 import { afterEach, describe, expect, mock, spyOn, test } from "bun:test"
-import { OpencodeClient } from "@opencode-ai/sdk/v2"
+import { OpencodeClient, type GlobalEvent } from "@opencode-ai/sdk/v2"
 import { createSessionTransport } from "@/cli/cmd/run/stream.transport"
 import type { FooterApi, FooterEvent, RunFilePart, StreamCommit } from "@/cli/cmd/run/types"
 
 type EventStream = Awaited<ReturnType<OpencodeClient["event"]["subscribe"]>>["stream"]
+type GlobalEventStream = Awaited<ReturnType<OpencodeClient["global"]["event"]>>["stream"]
 type SdkEvent = EventStream extends AsyncGenerator<infer T, unknown, unknown> ? T : never
 type SessionMessage = NonNullable<Awaited<ReturnType<OpencodeClient["session"]["messages"]>>["data"]>[number]
 type SessionChild = NonNullable<Awaited<ReturnType<OpencodeClient["session"]["children"]>>["data"]>[number]
@@ -81,12 +82,12 @@ function assistant(id: string) {
   } satisfies SdkEvent
 }
 
-function feed() {
-  const list: SdkEvent[] = []
+function feed<T>() {
+  const list: T[] = []
   let done = false
   let wake: (() => void) | undefined
 
-  const stream: EventStream = (async function* () {
+  const wrapped = (async function* () {
     while (!done || list.length > 0) {
       if (list.length === 0) {
         await new Promise<void>((resolve) => {
@@ -105,8 +106,8 @@ function feed() {
   })()
 
   return {
-    stream,
-    push(value: SdkEvent) {
+    stream: wrapped,
+    push(value: T) {
       list.push(value)
       wake?.()
       wake = undefined
@@ -119,6 +120,14 @@ function feed() {
   }
 }
 
+function eventFeed() {
+  return feed<SdkEvent>()
+}
+
+function globalFeed() {
+  return feed<GlobalEvent>()
+}
+
 function emptyStream(): EventStream {
   return (async function* (): AsyncGenerator<SdkEvent> {})()
 }
@@ -136,6 +145,18 @@ function sse(stream: EventStream) {
   return Promise.resolve({ stream })
 }
 
+function globalSse(stream: GlobalEventStream) {
+  return Promise.resolve({ stream })
+}
+
+function wrapGlobalStream(stream: EventStream): GlobalEventStream {
+  return (async function* () {
+    for await (const event of stream) {
+      yield globalEvent(event)
+    }
+  })()
+}
+
 function statusMap(busy: boolean): SessionStatusMap {
   if (busy) {
     return { "session-1": { type: "busy" } }
@@ -235,10 +256,10 @@ function completedTool(input: {
   }
 }
 
-function textPart(id: string, messageID: string, text: string): TextPart {
+function textPart(id: string, messageID: string, text: string, sessionID = "session-1"): TextPart {
   return {
     id,
-    sessionID: "session-1",
+    sessionID,
     messageID,
     type: "text",
     text,
@@ -298,6 +319,14 @@ function child(id: string): SessionChild {
   }
 }
 
+function globalEvent(payload: GlobalEvent["payload"]): GlobalEvent {
+  return {
+    directory: "/tmp",
+    project: "project-1",
+    payload,
+  }
+}
+
 function footer(fn?: (commit: StreamCommit) => void) {
   const commits: StreamCommit[] = []
   const events: FooterEvent[] = []
@@ -333,7 +362,9 @@ function footer(fn?: (commit: StreamCommit) => void) {
 function sdk(
   input: {
     stream?: EventStream
+    globalStream?: GlobalEventStream
     subscribe?: OpencodeClient["event"]["subscribe"]
+    globalEvent?: OpencodeClient["global"]["event"]
     promptAsync?: OpencodeClient["session"]["promptAsync"]
     status?: OpencodeClient["session"]["status"]
     messages?: OpencodeClient["session"]["messages"]
@@ -345,6 +376,8 @@ function sdk(
   const client = new OpencodeClient()
 
   const subscribe: OpencodeClient["event"]["subscribe"] = input.subscribe ?? (() => sse(input.stream ?? emptyStream()))
+  const globalEvent: OpencodeClient["global"]["event"] =
+    input.globalEvent ?? (() => globalSse(input.globalStream ?? wrapGlobalStream(input.stream ?? emptyStream())))
   const promptAsync: OpencodeClient["session"]["promptAsync"] = input.promptAsync ?? (() => ok(undefined))
   const status: OpencodeClient["session"]["status"] = input.status ?? (() => ok({}))
   const messages: OpencodeClient["session"]["messages"] = input.messages ?? (() => ok([]))
@@ -353,6 +386,7 @@ function sdk(
   const questions: OpencodeClient["question"]["list"] = input.questions ?? (() => ok([]))
 
   spyOn(client.event, "subscribe").mockImplementation(subscribe)
+  spyOn(client.global, "event").mockImplementation(globalEvent)
   spyOn(client.session, "promptAsync").mockImplementation(promptAsync)
   spyOn(client.session, "status").mockImplementation(status)
   spyOn(client.session, "messages").mockImplementation(messages)
@@ -365,7 +399,7 @@ function sdk(
 
 describe("run stream transport", () => {
   test("bootstraps child tabs and resumed blocker input", async () => {
-    const src = feed()
+    const src = eventFeed()
     const ui = footer()
     const transport = await createSessionTransport({
       sdk: sdk({
@@ -440,61 +474,67 @@ describe("run stream transport", () => {
     })
 
     try {
-      expect(ui.events).toContainEqual({
-        type: "stream.subagent",
-        state: {
-          tabs: [
-            expect.objectContaining({
-              sessionID: "child-1",
-              label: "Explore",
-              description: "Explore run folder",
-              status: "running",
-            }),
-          ],
-          details: {},
-          permissions: [
-            expect.objectContaining({
-              id: "perm-1",
-              sessionID: "child-1",
-              metadata: {
-                input: {
-                  filePath: "src/run/subagent-data.ts",
-                  diff: "@@ -1 +1 @@",
-                },
-              },
-            }),
-          ],
-          questions: [],
-        },
+      const boot = await waitFor(() => {
+        const item = ui.events.findLast((event) => event.type === "stream.subagent")
+        const state = item?.type === "stream.subagent" ? item.state : undefined
+        return state?.tabs.some((tab) => tab.sessionID === "child-1") && state.permissions.some((req) => req.id === "perm-1")
+          ? state
+          : undefined
       })
 
+      expect(boot.tabs).toEqual([
+        expect.objectContaining({
+          sessionID: "child-1",
+          label: "Explore",
+          description: "Explore run folder",
+          status: "running",
+        }),
+      ])
+      expect(boot.permissions).toEqual([
+        expect.objectContaining({
+          id: "perm-1",
+          sessionID: "child-1",
+          metadata: {
+            input: {
+              filePath: "src/run/subagent-data.ts",
+              diff: "@@ -1 +1 @@",
+            },
+          },
+        }),
+      ])
+
       transport.selectSubagent("child-1")
 
-      expect(ui.events).toContainEqual({
-        type: "stream.subagent",
-        state: {
-          tabs: [
+      const selected = await waitFor(() => {
+        const item = ui.events.findLast((event) => event.type === "stream.subagent")
+        const state = item?.type === "stream.subagent" ? item.state : undefined
+        const detail = state?.details["child-1"]
+        return detail?.commits.some((commit) => commit.kind === "tool" && commit.tool === "edit" && commit.phase === "start")
+          ? state
+          : undefined
+      })
+
+      expect(selected.details).toEqual({
+        "child-1": {
+          sessionID: "child-1",
+          commits: [
             expect.objectContaining({
-              sessionID: "child-1",
-              label: "Explore",
+              kind: "tool",
+              tool: "edit",
+              phase: "start",
             }),
           ],
-          details: {
-            "child-1": {
-              sessionID: "child-1",
-              commits: [],
-            },
-          },
-          permissions: [
-            expect.objectContaining({
-              id: "perm-1",
-            }),
-          ],
-          questions: [],
         },
       })
 
-      expect(ui.events).toContainEqual({
+      expect(
+        await waitFor(() => {
+          const item = ui.events.findLast((event) => event.type === "stream.view")
+          return item?.type === "stream.view" && item.view.type === "permission" && item.view.request.id === "perm-1"
+            ? item
+            : undefined
+        }),
+      ).toEqual({
         type: "stream.view",
         view: {
           type: "permission",
@@ -515,8 +555,265 @@ describe("run stream transport", () => {
     }
   })
 
+  test("bootstraps child session output before selection", async () => {
+    const ui = footer()
+    const transport = await createSessionTransport({
+      sdk: sdk({
+        messages: async ({ sessionID }) => {
+          if (sessionID === "session-1") {
+            return ok([
+              assistantMessage({
+                sessionID: "session-1",
+                id: "msg-1",
+                parts: [
+                  completedTool({
+                    sessionID: "session-1",
+                    messageID: "msg-1",
+                    id: "task-1",
+                    callID: "call-1",
+                    tool: "task",
+                    body: {
+                      description: "Explore run.ts",
+                      subagent_type: "explore",
+                    },
+                    metadata: {
+                      sessionId: "child-1",
+                    },
+                  }),
+                ],
+              }),
+            ])
+          }
+
+          return sessionID === "child-1"
+            ? ok([
+                assistantMessage({
+                  sessionID: "child-1",
+                  id: "msg-child-1",
+                  parts: [textPart("txt-child-1", "msg-child-1", "subagent summary", "child-1")],
+                }),
+              ])
+            : ok([])
+        },
+        children: async () => ok([child("child-1")]),
+      }),
+      sessionID: "session-1",
+      thinking: true,
+      limits: () => ({}),
+      footer: ui.api,
+    })
+
+    try {
+      await waitFor(() => {
+        const item = ui.events.findLast((event) => event.type === "stream.subagent")
+        return item?.type === "stream.subagent" && item.state.tabs.some((tab) => tab.sessionID === "child-1")
+          ? item
+          : undefined
+      })
+
+      transport.selectSubagent("child-1")
+
+      expect(
+        await waitFor(() => {
+          const item = ui.events.findLast((event) => event.type === "stream.subagent")
+          const detail = item?.type === "stream.subagent" ? item.state.details["child-1"] : undefined
+          return detail?.commits.some((commit) => commit.kind === "assistant" && commit.text === "subagent summary")
+            ? detail
+            : undefined
+        }),
+      ).toEqual({
+        sessionID: "child-1",
+        commits: [
+          expect.objectContaining({
+            kind: "assistant",
+            text: "subagent summary",
+          }),
+        ],
+      })
+    } finally {
+      await transport.close()
+    }
+  })
+
+  test("does not block startup on child history bootstrap", async () => {
+    const pending = defer<Awaited<ReturnType<typeof ok<SessionMessage[]>>>>()
+    const ui = footer()
+    let transport: Awaited<ReturnType<typeof createSessionTransport>> | undefined
+
+    const task = createSessionTransport({
+      sdk: sdk({
+        messages: async ({ sessionID }) => {
+          if (sessionID === "session-1") {
+            return ok([
+              assistantMessage({
+                sessionID: "session-1",
+                id: "msg-1",
+                parts: [
+                  runningTool({
+                    sessionID: "session-1",
+                    messageID: "msg-1",
+                    id: "task-1",
+                    callID: "call-1",
+                    tool: "task",
+                    body: {
+                      description: "Explore run.ts",
+                      subagent_type: "explore",
+                    },
+                    metadata: {
+                      sessionId: "child-1",
+                    },
+                  }),
+                ],
+              }),
+            ])
+          }
+
+          if (sessionID === "child-1") {
+            return pending.promise
+          }
+
+          return ok([])
+        },
+        children: async () => ok([child("child-1")]),
+      }),
+      sessionID: "session-1",
+      thinking: true,
+      limits: () => ({}),
+      footer: ui.api,
+    }).then((item) => {
+      transport = item
+      return item
+    })
+
+    try {
+      const state = await waitFor(() => {
+        const item = ui.events.findLast((event) => event.type === "stream.subagent")
+        return item?.type === "stream.subagent" && item.state.tabs.some((tab) => tab.sessionID === "child-1")
+          ? item.state
+          : undefined
+      })
+
+      await waitFor(() => transport)
+
+      expect(state).toEqual({
+        tabs: [expect.objectContaining({ sessionID: "child-1", status: "running" })],
+        details: {},
+        permissions: [],
+        questions: [],
+      })
+    } finally {
+      pending.resolve(ok([]))
+      await task
+      await transport?.close()
+    }
+  })
+
+  test("streams selected subagent output from global events while it is running", async () => {
+    const global = globalFeed()
+    const ui = footer()
+    const transport = await createSessionTransport({
+      sdk: sdk({
+        globalStream: global.stream,
+      }),
+      sessionID: "session-1",
+      thinking: true,
+      limits: () => ({}),
+      footer: ui.api,
+    })
+
+    try {
+      global.push(globalEvent(assistant("msg-1")))
+      global.push(
+        globalEvent(
+          toolUpdated(
+            runningTool({
+              sessionID: "session-1",
+              messageID: "msg-1",
+              id: "task-1",
+              callID: "call-1",
+              tool: "task",
+              body: {
+                description: "Explore run.ts",
+                subagent_type: "explore",
+              },
+              metadata: {
+                sessionId: "child-1",
+              },
+            }),
+          ),
+        ),
+      )
+
+      await waitFor(() => {
+        const item = ui.events.findLast((event) => event.type === "stream.subagent")
+        return item?.type === "stream.subagent" && item.state.tabs.some((tab) => tab.sessionID === "child-1")
+          ? item
+          : undefined
+      })
+
+      transport.selectSubagent("child-1")
+
+      global.push(
+        globalEvent({
+          id: "evt-child-message",
+          type: "message.updated",
+          properties: {
+            sessionID: "child-1",
+            info: assistantMessage({
+              sessionID: "child-1",
+              id: "msg-child-1",
+              parts: [],
+            }).info,
+          },
+        }),
+      )
+      global.push(globalEvent(textUpdated(textPart("txt-child-1", "msg-child-1", "hello", "child-1"))))
+
+      expect(
+        await waitFor(() => {
+          const item = ui.events.findLast((event) => event.type === "stream.subagent")
+          const detail = item?.type === "stream.subagent" ? item.state.details["child-1"] : undefined
+          return detail?.commits.some((commit) => commit.kind === "assistant" && commit.text === "hello")
+            ? detail
+            : undefined
+        }),
+      ).toEqual({
+        sessionID: "child-1",
+        commits: [
+          expect.objectContaining({
+            kind: "assistant",
+            text: "hello",
+          }),
+        ],
+      })
+
+      global.push(globalEvent(textUpdated(textPart("txt-child-1", "msg-child-1", "hello world", "child-1"))))
+
+      expect(
+        await waitFor(() => {
+          const item = ui.events.findLast((event) => event.type === "stream.subagent")
+          const detail = item?.type === "stream.subagent" ? item.state.details["child-1"] : undefined
+          return detail?.commits.some((commit) => commit.kind === "assistant" && commit.text === "hello world")
+            ? detail
+            : undefined
+        }, 2_000),
+      ).toEqual({
+        sessionID: "child-1",
+        commits: [
+          expect.objectContaining({
+            kind: "assistant",
+            text: "hello world",
+          }),
+        ],
+      })
+    } finally {
+      global.close()
+      await transport.close()
+    }
+  })
+
   test("recovers pending questions from question.list when question.asked is missed", async () => {
-    const src = feed()
+    const src = eventFeed()
     const ui = footer()
     let questionCalls = 0
     const request = {
@@ -639,7 +936,7 @@ describe("run stream transport", () => {
   })
 
   test("does not resurrect questions if question.list resolves after tool completion", async () => {
-    const src = feed()
+    const src = eventFeed()
     const ui = footer()
     const started = defer()
     const request = {
@@ -736,6 +1033,12 @@ describe("run stream transport", () => {
           }),
         ),
       )
+      await waitFor(() => {
+        const commit = ui.commits.findLast(
+          (item) => item.kind === "tool" && item.partID === "question-race-tool-1" && item.toolState === "completed",
+        )
+        return commit ? true : undefined
+      })
       pending.resolve(ok([request]))
 
       await Bun.sleep(50)
@@ -756,7 +1059,7 @@ describe("run stream transport", () => {
   })
 
   test("respects the includeFiles flag when building prompt payloads", async () => {
-    const src = feed()
+    const src = eventFeed()
     const ui = footer()
     const seen: unknown[] = []
     const file: RunFilePart = {
@@ -818,7 +1121,7 @@ describe("run stream transport", () => {
   })
 
   test("falls back to session status polling when idle events are missing", async () => {
-    const src = feed()
+    const src = eventFeed()
     const ui = footer()
     let busy = true
     const transport = await createSessionTransport({
@@ -858,7 +1161,7 @@ describe("run stream transport", () => {
   })
 
   test("flushes interrupted output when the active turn aborts", async () => {
-    const src = feed()
+    const src = eventFeed()
     const seen = defer()
     const ui = footer((commit) => {
       if (commit.kind === "assistant" && commit.phase === "progress") {
@@ -927,7 +1230,7 @@ describe("run stream transport", () => {
   })
 
   test("closes an active turn without rejecting it", async () => {
-    const src = feed()
+    const src = eventFeed()
     const ui = footer()
     const ready = defer()
     let aborted = false
@@ -982,11 +1285,11 @@ describe("run stream transport", () => {
 
     const transport = await createSessionTransport({
       sdk: sdk({
-        subscribe: () =>
-          sse(
-            (async function* (): AsyncGenerator<SdkEvent> {
+        globalEvent: () =>
+          globalSse(
+            (async function* (): AsyncGenerator<GlobalEvent> {
               await ready.promise
-              yield busy()
+              yield globalEvent(busy())
               throw new Error("boom")
             })(),
           ),
@@ -1018,8 +1321,56 @@ describe("run stream transport", () => {
     }
   })
 
+  test("rejects the active turn when the backing instance is disposed", async () => {
+    const ui = footer()
+    const ready = defer()
+
+    const transport = await createSessionTransport({
+      sdk: sdk({
+        globalEvent: () =>
+          globalSse(
+            (async function* (): AsyncGenerator<GlobalEvent> {
+              await ready.promise
+              yield globalEvent({
+                id: "evt-disposed",
+                type: "server.instance.disposed",
+                properties: {
+                  directory: "/tmp",
+                },
+              })
+            })(),
+          ),
+        promptAsync: async () => {
+          ready.resolve()
+          return ok(undefined)
+        },
+        status: async () => ok({}),
+      }),
+      directory: "/tmp",
+      sessionID: "session-1",
+      thinking: true,
+      limits: () => ({}),
+      footer: ui.api,
+    })
+
+    try {
+      await expect(
+        transport.runPromptTurn({
+          agent: undefined,
+          model: undefined,
+          variant: undefined,
+          prompt: { text: "hello", parts: [] },
+          files: [],
+          includeFiles: false,
+        }),
+      ).rejects.toThrow("instance disposed")
+    } finally {
+      await transport.close()
+    }
+  })
+
   test("rejects concurrent turns", async () => {
-    const src = feed()
+    const src = eventFeed()
     const ui = footer()
     const transport = await createSessionTransport({
       sdk: sdk({

packages/opencode/test/cli/run/subagent-data.test.ts

@@ -2,6 +2,7 @@ import { describe, expect, test } from "bun:test"
 import type { Event } from "@opencode-ai/sdk/v2"
 import { entryBody } from "@/cli/cmd/run/entry.body"
 import {
+  bootstrapSubagentCalls,
   bootstrapSubagentData,
   clearFinishedSubagents,
   createSubagentData,
@@ -10,6 +11,7 @@ import {
 } from "@/cli/cmd/run/subagent-data"
 
 type SessionMessage = Parameters<typeof bootstrapSubagentData>[0]["messages"][number]
+type ChildMessage = Parameters<typeof bootstrapSubagentCalls>[0]["messages"][number]
 
 function visible(commits: Array<Parameters<typeof entryBody>[0]>) {
   return commits.flatMap((item) => {
@@ -120,6 +122,65 @@ function question(id: string, sessionID: string) {
   }
 }
 
+function childMessage(input: {
+  messageID: string
+  sessionID: string
+  role: "user" | "assistant"
+  parts: ChildMessage["parts"]
+}) {
+  if (input.role === "user") {
+    return {
+      info: {
+        id: input.messageID,
+        sessionID: input.sessionID,
+        role: "user",
+        time: {
+          created: 1,
+        },
+        agent: "test",
+        model: {
+          providerID: "openai",
+          modelID: "gpt-5",
+        },
+      },
+      parts: input.parts,
+    } satisfies ChildMessage
+  }
+
+  return {
+    info: {
+      id: input.messageID,
+      sessionID: input.sessionID,
+      role: "assistant",
+      time: {
+        created: 2,
+        completed: 3,
+      },
+      parentID: "msg-user-1",
+      providerID: "openai",
+      modelID: "gpt-5",
+      mode: "default",
+      agent: "explore",
+      path: {
+        cwd: "/tmp",
+        root: "/tmp",
+      },
+      cost: 0,
+      tokens: {
+        input: 1,
+        output: 1,
+        reasoning: 0,
+        cache: {
+          read: 0,
+          write: 0,
+        },
+      },
+      finish: "stop",
+    },
+    parts: input.parts,
+  } satisfies ChildMessage
+}
+
 describe("run subagent data", () => {
   test("bootstraps tabs and child blockers from parent task parts", () => {
     const data = createSubagentData()
@@ -309,6 +370,73 @@ describe("run subagent data", () => {
     expect(snapshot.questions).toEqual([])
   })
 
+  test("replays bootstrapped child session messages into inspector commits", () => {
+    const data = createSubagentData()
+
+    bootstrapSubagentData({
+      data,
+      messages: [taskMessage("child-1", "completed")],
+      children: [{ id: "child-1" }],
+      permissions: [],
+      questions: [],
+    })
+
+    expect(
+      bootstrapSubagentCalls({
+        data,
+        sessionID: "child-1",
+        messages: [
+          childMessage({
+            messageID: "msg-user-1",
+            sessionID: "child-1",
+            role: "user",
+            parts: [
+              {
+                id: "txt-user-1",
+                messageID: "msg-user-1",
+                sessionID: "child-1",
+                type: "text",
+                text: "Inspect footer tabs",
+                time: { start: 1, end: 1 },
+              },
+            ],
+          }),
+          childMessage({
+            messageID: "msg-assistant-1",
+            sessionID: "child-1",
+            role: "assistant",
+            parts: [
+              {
+                id: "reason-1",
+                messageID: "msg-assistant-1",
+                sessionID: "child-1",
+                type: "reasoning",
+                text: "planning next steps",
+                time: { start: 2, end: 2 },
+              },
+              {
+                id: "txt-1",
+                messageID: "msg-assistant-1",
+                sessionID: "child-1",
+                type: "text",
+                text: "hello world",
+                time: { start: 2, end: 3 },
+              },
+            ],
+          }),
+        ],
+        thinking: true,
+        limits: {},
+      }),
+    ).toBe(true)
+
+    expect(visible(snapshotSubagentData(data).details["child-1"]?.commits ?? [])).toEqual([
+      "› Inspect footer tabs",
+      "_Thinking:_ planning next steps",
+      "hello world",
+    ])
+  })
+
   test("clears finished tabs on the next parent prompt", () => {
     const data = createSubagentData()