fix(tui): submit prompt when resuming session (#38260)

packages/tui/test/app-lifecycle.test.tsx

@@ -69,6 +69,7 @@ test("session lifecycle updates the terminal title and prints the epilogue after
     setTitle(title)
   }
   const events = createEventStream()
+  let promptRequests = 0
   const calls = createFetch((url) => {
     const session = {
       id: "dummy",
@@ -88,6 +89,10 @@ test("session lifecycle updates the terminal title and prints the epilogue after
     if (url.pathname === "/api/session/dummy/message") return json({ data: [], cursor: {} })
     if (url.pathname === "/api/session/dummy/pending") return json({ data: [] })
     if (url.pathname === "/api/session/dummy/permission") return json({ data: [] })
+    if (url.pathname === "/api/session/dummy/prompt") {
+      promptRequests++
+      return json({ data: {} })
+    }
   }, events)
   const server = Bun.serve({ port: 0, fetch: (request) => calls.fetch(request) })
   const originalWrite = process.stdout.write.bind(process.stdout)
@@ -124,6 +129,7 @@ test("session lifecycle updates the terminal title and prints the epilogue after
 
     expect(stdout).toContain("Renamed session")
     expect(stdout).toContain("opencode2 -s dummy")
+    expect(promptRequests).toBe(0)
   } finally {
     process.stdout.write = originalWrite
     if (!setup.renderer.isDestroyed) setup.renderer.destroy()
@@ -131,3 +137,80 @@ test("session lifecycle updates the terminal title and prints the epilogue after
     mock.restore()
   }
 })
+
+test("session startup prompt is submitted exactly once", async () => {
+  const setup = await createTestRenderer({ width: 80, height: 24, useThread: false })
+  const core = await import("@opentui/core")
+  mock.module("@opentui/core", () => ({ ...core, createCliRenderer: async () => setup.renderer }))
+  const events = createEventStream()
+  const cwd = process.cwd()
+  const location = { directory: cwd, project: { id: "project", directory: cwd } }
+  const session = {
+    id: "dummy",
+    title: "Demo session",
+    projectID: "project",
+    location: { directory: cwd },
+    agent: "build",
+    model: { providerID: "provider", id: "model" },
+    cost: 0,
+    tokens: { input: 0, output: 0, reasoning: 0, cache: { read: 0, write: 0 } },
+    time: { created: 0, updated: 0 },
+  }
+  const bodies: unknown[] = []
+  const promptSubmitted = Promise.withResolvers<void>()
+  const calls = createFetch(async (url, request) => {
+    if (url.pathname === "/api/location") return json(location)
+    if (url.pathname === "/api/session") return json({ data: [session], cursor: {} })
+    if (url.pathname === "/api/session/dummy") return json({ data: session })
+    if (url.pathname === "/api/session/dummy/message") return json({ data: [], cursor: {} })
+    if (url.pathname === "/api/session/dummy/pending") return json({ data: [] })
+    if (url.pathname === "/api/session/dummy/permission") return json({ data: [] })
+    if (url.pathname === "/api/agent")
+      return json({
+        location,
+        data: [{ id: "build", mode: "primary", hidden: false, permissions: [] }],
+      })
+    if (url.pathname === "/api/model")
+      return json({
+        location,
+        data: [{ id: "model", providerID: "provider", name: "Model", variants: [] }],
+      })
+    if (url.pathname === "/api/session/dummy/prompt") {
+      bodies.push(await request.json())
+      promptSubmitted.resolve()
+      return json({ data: {} })
+    }
+  }, events)
+  const server = Bun.serve({ port: 0, fetch: (request) => calls.fetch(request) })
+
+  try {
+    const { run } = await import("../src/app")
+    const task = Effect.runPromise(
+      run({
+        app: { name: "test", version: "test", channel: "test" },
+        server: { endpoint: { url: server.url.toString() } },
+        config: { get: async () => ({}), update: async () => ({}) },
+        packages: { resolve: async () => undefined },
+        args: { sessionID: "dummy", prompt: "RESUME_READY" },
+        log: () => {},
+      }).pipe(Effect.provide(AppNodeBuilder.build(Global.node)), Effect.provide(FileSystem.layerNoop({}))),
+    )
+
+    await Promise.race([
+      promptSubmitted.promise,
+      Bun.sleep(2000).then(() => {
+        throw new Error("startup prompt was not submitted")
+      }),
+    ])
+    await Bun.sleep(20)
+    setup.renderer.destroy()
+    await task
+
+    expect(bodies).toHaveLength(1)
+    expect(bodies[0]).toMatchObject({ text: "RESUME_READY" })
+  } finally {
+    if (!setup.renderer.isDestroyed) setup.renderer.destroy()
+    await server.stop()
+    mock.restore()
+  }
+})