refactor: remove todo tool (#35989)

packages/app/e2e/performance/timeline-stability/tools.spec.ts

@@ -33,11 +33,9 @@ test.describe("timeline tool state stability", () => {
     }
     const names = { webfetch: "webfetch", websearch: "websearch", task: "task", skill: "skill", custom: "mcp_probe" }
     const questionID = "prt_state_question"
-    const todoID = "prt_state_todo"
     const initial = [
       ...ids.map((id) => toolPart(`prt_state_${id}`, names[id], "pending", inputs[id])),
       toolPart(questionID, "question", "pending", questionInput()),
-      toolPart(todoID, "todowrite", "pending", { todos: [{ content: "Hidden", status: "pending" }] }),
       textPart("prt_state_following", "Following lightweight tools"),
     ]
     const childID = "ses_timeline_child"
@@ -49,7 +47,6 @@ test.describe("timeline tool state stability", () => {
     await timeline.send(status("busy"), 120)
     for (const id of ids) await timeline.waitForPart(`prt_state_${id}`)
     await expect(page.locator(`[data-timeline-part-id="${questionID}"]`)).toHaveCount(0)
-    await expect(page.locator(`[data-timeline-part-id="${todoID}"]`)).toHaveCount(0)
 
     const regionIDs = [
       "prt_state_webfetch",
@@ -105,7 +102,6 @@ test.describe("timeline tool state stability", () => {
       ]),
     )
     await expect(page.locator(`[data-timeline-part-id="${questionID}"]`)).toContainText("Keep it stable")
-    await expect(page.locator(`[data-timeline-part-id="${todoID}"]`)).toHaveCount(0)
     await expect(
       page.locator(`a[href$="/session/${childID}"]`, { has: page.locator('[data-component="task-tool-card"]') }),
     ).toBeVisible()

packages/app/e2e/performance/timeline/session-timeline-stress.fixture.ts

@@ -269,7 +269,6 @@ const childMessages = Array.from({ length: 4 }, (_, index) => [
 ]).flat()
 
 function renderable(part: MessagePart) {
-  if (part.type === "tool" && part.tool === "todowrite") return false
   if (part.type === "text") return !!part.text.trim()
   if (part.type === "reasoning") return !!part.text.trim()
   return part.type !== "step-start" && part.type !== "step-finish" && part.type !== "patch"

packages/app/e2e/regression/cross-server-tab-close.spec.ts

@@ -90,7 +90,7 @@ async function mockServers(page: Page, requests: string[]) {
     if (url.pathname === `/session/${current.id}`) return json(route, current)
     if (/^\/session\/[^/]+$/.test(url.pathname)) return json(route, { name: "NotFoundError" }, 404)
     if (url.pathname === `/session/${current.id}/message`) return json(route, [])
-    if (/^\/session\/[^/]+\/(children|todo|diff)$/.test(url.pathname)) return json(route, [])
+    if (/^\/session\/[^/]+\/(children|diff)$/.test(url.pathname)) return json(route, [])
     if (["/skill", "/command", "/lsp", "/formatter", "/permission", "/question", "/vcs/diff"].includes(url.pathname))
       return json(route, [])
     if (["/global/config", "/config", "/provider/auth", "/mcp", "/session/status"].includes(url.pathname))

packages/app/e2e/regression/remote-tab-busy.spec.ts

@@ -65,7 +65,7 @@ async function mockServers(page: Page) {
     if (url.pathname === `/session/${current.id}`) return json(route, current)
     if (/^\/session\/[^/]+$/.test(url.pathname)) return json(route, { name: "NotFoundError" }, 404)
     if (url.pathname === `/session/${current.id}/message`) return json(route, [])
-    if (/^\/session\/[^/]+\/(children|todo|diff)$/.test(url.pathname)) return json(route, [])
+    if (/^\/session\/[^/]+\/(children|diff)$/.test(url.pathname)) return json(route, [])
     if (["/skill", "/command", "/lsp", "/formatter", "/permission", "/question", "/vcs/diff"].includes(url.pathname))
       return json(route, [])
     if (["/global/config", "/config", "/provider/auth", "/mcp"].includes(url.pathname)) return json(route, {})

packages/app/e2e/regression/session-timeline-projection.spec.ts

@@ -35,7 +35,6 @@ test.describe("session timeline projection", () => {
       editPart("prt_edit"),
       toolPart("prt_write", "write", "completed", { filePath: "src/new.ts", content: "export const stable = true\n" }),
       patchPart("prt_patch"),
-      toolPart("prt_todo", "todowrite", "completed", { todos: [{ content: "Hidden", status: "pending" }] }),
       toolPart(
         "prt_question",
         "question",
@@ -65,7 +64,6 @@ test.describe("session timeline projection", () => {
     ]) {
       await expect(page.locator(`[data-timeline-part-id="${id}"]`).first(), id).toBeVisible()
     }
-    await expect(page.locator('[data-timeline-part-id="prt_todo"]')).toHaveCount(0)
   })
 
   test("projects gaps, dividers, assistant parts, and errors together", async ({ page }) => {

packages/app/e2e/regression/session-timeline-tool-projection.spec.ts

@@ -17,13 +17,11 @@ test("renders every tool error outcome without leaking hidden tools", async ({ p
       error: "The user dismissed this question",
     }),
     toolPart("prt_question_error", "question", "error", questionInput(), { error: "Question transport failed" }),
-    toolPart("prt_todo_error", "todowrite", "error", { todos: [] }, { error: "Hidden todo failure" }),
   )
   await setupTimeline(page, { messages: [userMessage(), assistantMessage(parts)] })
 
   await expect(page.locator('[data-kind="tool-error-card"]')).toHaveCount(ordinary.length + 1)
   await expect(page.getByText(/dismissed/i)).toBeVisible()
-  await expect(page.locator('[data-timeline-part-id="prt_todo_error"]')).toHaveCount(0)
   for (let index = 0; index < ordinary.length; index++) {
     await expect(page.locator(`[data-timeline-part-id="prt_error_${index}"]`)).toBeVisible()
   }

packages/app/e2e/regression/session-todo-dock-navigation.spec.ts

@@ -1,186 +0,0 @@
-import { base64Encode } from "@opencode-ai/core/util/encode"
-import { expect, test, type Page } from "@playwright/test"
-import { mockOpenCodeServer } from "../utils/mock-server"
-import { expectSessionTitle } from "../utils/waits"
-
-const directory = "C:/OpenCode/TodoDockNavigation"
-const projectID = "proj_todo_dock_navigation"
-const sourceID = "ses_todo_dock_source"
-const otherID = "ses_todo_dock_other"
-const sourceTitle = "Todo dock animation"
-const otherTitle = "Separate session"
-
-const activeTodos = [
-  { id: "todo-1", content: "Receive todos in the active session", status: "completed", priority: "high" },
-  { id: "todo-2", content: "Keep the dock visible across tabs", status: "completed", priority: "high" },
-  { id: "todo-3", content: "Close after the final todo", status: "in_progress", priority: "high" },
-]
-
-type EventPayload = {
-  directory: string
-  payload: Record<string, unknown>
-}
-
-test.use({ viewport: { width: 1440, height: 900 }, reducedMotion: "no-preference" })
-
-test("animates todo lifecycle without replaying it across session tabs", async ({ page }) => {
-  test.setTimeout(90_000)
-  const events: EventPayload[] = []
-  const todos: Record<string, typeof activeTodos> = { [sourceID]: [], [otherID]: [] }
-
-  await mockOpenCodeServer(page, {
-    directory,
-    project: {
-      id: projectID,
-      worktree: directory,
-      vcs: "git",
-      name: "todo-dock-navigation",
-      time: { created: 1700000000000, updated: 1700000000000 },
-      sandboxes: [],
-    },
-    provider: {
-      all: [
-        {
-          id: "opencode",
-          name: "OpenCode",
-          models: {
-            "claude-opus-4-6": {
-              id: "claude-opus-4-6",
-              name: "Claude Opus 4.6",
-              limit: { context: 200_000 },
-            },
-          },
-        },
-      ],
-      connected: ["opencode"],
-      default: { providerID: "opencode", modelID: "claude-opus-4-6" },
-    },
-    sessions: [session(sourceID, sourceTitle, 1700000000000), session(otherID, otherTitle, 1700000001000)],
-    pageMessages: () => ({ items: [] }),
-    events: () => events.splice(0, 1),
-    eventRetry: 16,
-    todos: (sessionID) => todos[sessionID] ?? [],
-  })
-  await configurePage(page)
-
-  await page.goto(sessionHref(sourceID))
-  await expectSessionTitle(page, sourceTitle)
-  const dock = page.locator('[data-component="session-todo-dock"]')
-  await expect(dock).toHaveCount(0)
-
-  events.push(statusEvent(sourceID, "busy"))
-  await expect(page.getByRole("button", { name: "Stop" })).toBeVisible()
-
-  await page.waitForTimeout(700)
-  const opening = sampleDock(page, 1_000)
-  todos[sourceID] = activeTodos
-  events.push(todoEvent(sourceID, activeTodos))
-  await expect(dock).toBeVisible()
-  await expect(dock.locator('[data-state="in_progress"]')).toHaveCount(1)
-  expect((await opening).some((sample) => sample.opacity > 0.05 && sample.opacity < 0.95)).toBe(true)
-
-  await switchSession(page, otherID, otherTitle)
-  await expect(dock).toHaveCount(0)
-
-  const returningOpen = sampleDock(page, 700)
-  await switchSession(page, sourceID, sourceTitle)
-  const openSamples = (await returningOpen).filter((sample) => sample.present)
-  expect(openSamples.length).toBeGreaterThan(0)
-  expect(openSamples[0]!.opacity).toBeGreaterThan(0.98)
-  expect(openSamples[0]!.height).toBeGreaterThan(70)
-  await expect(dock.locator('[data-state="in_progress"]')).toHaveCount(1)
-
-  const completedTodos = activeTodos.map((todo) => ({ ...todo, status: "completed" }))
-  const closing = sampleDock(page, 1_000)
-  todos[sourceID] = completedTodos
-  events.push(todoEvent(sourceID, completedTodos))
-  await expect(dock).toHaveCount(0)
-  expect((await closing).some((sample) => sample.opacity > 0.05 && sample.opacity < 0.95)).toBe(true)
-  todos[sourceID] = []
-  events.push(todoEvent(sourceID, []))
-
-  await switchSession(page, otherID, otherTitle)
-  const returningEmpty = sampleDock(page, 700)
-  await switchSession(page, sourceID, sourceTitle)
-  await expect(dock).toHaveCount(0)
-  expect((await returningEmpty).every((sample) => !sample.present)).toBe(true)
-})
-
-function session(id: string, title: string, created: number) {
-  return {
-    id,
-    slug: id,
-    projectID,
-    directory,
-    title,
-    version: "dev",
-    time: { created, updated: created },
-  }
-}
-
-function statusEvent(sessionID: string, type: "busy" | "idle"): EventPayload {
-  return {
-    directory,
-    payload: { type: "session.status", properties: { sessionID, status: { type } } },
-  }
-}
-
-function todoEvent(sessionID: string, next: typeof activeTodos): EventPayload {
-  return {
-    directory,
-    payload: { type: "todo.updated", properties: { sessionID, todos: next } },
-  }
-}
-
-async function configurePage(page: Page) {
-  const server = `http://${process.env.PLAYWRIGHT_SERVER_HOST ?? "127.0.0.1"}:${process.env.PLAYWRIGHT_SERVER_PORT ?? "4096"}`
-  await page.addInitScript(
-    ({ directory, dirBase64, server, sessionIDs }) => {
-      localStorage.setItem("settings.v3", JSON.stringify({ general: { newLayoutDesigns: true } }))
-      localStorage.setItem(
-        "opencode.global.dat:server",
-        JSON.stringify({
-          projects: { local: [{ worktree: directory, expanded: true }] },
-          lastProject: { local: directory },
-        }),
-      )
-      localStorage.setItem(
-        "opencode.window.browser.dat:tabs",
-        JSON.stringify(sessionIDs.map((sessionId) => ({ type: "session", server, dirBase64, sessionId }))),
-      )
-    },
-    { directory, dirBase64: base64Encode(directory), server, sessionIDs: [sourceID, otherID] },
-  )
-}
-
-function sessionHref(sessionID: string) {
-  const server = `http://${process.env.PLAYWRIGHT_SERVER_HOST ?? "127.0.0.1"}:${process.env.PLAYWRIGHT_SERVER_PORT ?? "4096"}`
-  return `/server/${base64Encode(server)}/session/${sessionID}`
-}
-
-async function switchSession(page: Page, sessionID: string, title: string) {
-  const href = sessionHref(sessionID)
-  const tab = page.locator(`[data-slot="titlebar-tabs"] a[href="${href}"]`).first()
-  await expect(tab).toBeVisible()
-  await tab.click()
-  await expectSessionTitle(page, title)
-}
-
-function sampleDock(page: Page, duration: number) {
-  return page.evaluate(async (duration) => {
-    const samples: { present: boolean; height: number; opacity: number }[] = []
-    const start = performance.now()
-    while (performance.now() - start < duration) {
-      const dock = document.querySelector<HTMLElement>('[data-component="session-todo-dock"]')
-      const clip = dock?.parentElement?.parentElement
-      const label = dock?.querySelector<HTMLElement>('[data-action="session-todo-toggle"] span[aria-label]')
-      samples.push({
-        present: !!dock,
-        height: clip?.getBoundingClientRect().height ?? 0,
-        opacity: label ? Number.parseFloat(getComputedStyle(label).opacity) : 0,
-      })
-      await new Promise(requestAnimationFrame)
-    }
-    return samples
-  }, duration)
-}

packages/app/e2e/regression/tab-navigate-mousedown.spec.ts

@@ -63,7 +63,7 @@ async function mockServer(page: Page) {
     if (byId) return json(route, byId)
     if (/^\/session\/[^/]+$/.test(url.pathname)) return json(route, { name: "NotFoundError" }, 404)
     if (/^\/session\/[^/]+\/message$/.test(url.pathname)) return json(route, [])
-    if (/^\/session\/[^/]+\/(children|todo|diff)$/.test(url.pathname)) return json(route, [])
+    if (/^\/session\/[^/]+\/(children|diff)$/.test(url.pathname)) return json(route, [])
     if (["/skill", "/command", "/lsp", "/formatter", "/permission", "/question", "/vcs/diff"].includes(url.pathname))
       return json(route, [])
     if (["/global/config", "/config", "/provider/auth", "/mcp", "/session/status"].includes(url.pathname))

packages/app/e2e/smoke/session-timeline.fixture.ts

@@ -229,7 +229,6 @@ const sourceMessages = Array.from({ length: 12 }, (_, index) => [
 ]).flat()
 
 function renderable(part: MessagePart) {
-  if (part.type === "tool" && part.tool === "todowrite") return false
   if (part.type === "text") return !!part.text.trim()
   if (part.type === "reasoning") return !!part.text.trim()
   return part.type !== "step-start" && part.type !== "step-finish" && part.type !== "patch"

packages/app/e2e/utils/mock-server.ts

@@ -17,7 +17,6 @@ export interface MockServerConfig {
   onMessage?: (input: { sessionID: string; messageID: string }) => void
   events?: () => unknown[]
   eventRetry?: number
-  todos?: (sessionID: string) => unknown[]
   permissions?: unknown[] | (() => unknown[])
   questions?: unknown[] | (() => unknown[])
   fileList?: (path: string) => unknown | Promise<unknown>
@@ -96,8 +95,6 @@ export async function mockOpenCodeServer(page: Page, config: MockServerConfig) {
       return json(route, message)
     }
 
-    const todoMatch = path.match(/^\/session\/([^/]+)\/todo$/)
-    if (todoMatch) return json(route, config.todos?.(todoMatch[1]!) ?? [])
     if (/^\/session\/[^/]+\/(children|diff)$/.test(path)) return json(route, [])
 
     const messagesMatch = path.match(/^\/session\/([^/]+)\/message$/)