refactor: remove todo tool (#35989)

packages/session-ui/src/components/message-part.css

@@ -590,27 +590,6 @@
   }
 }
 
-[data-component="todos"] {
-  padding: 10px 0 24px 0;
-  display: flex;
-  flex-direction: column;
-  gap: 8px;
-
-  [data-component="checkbox"] {
-    --checkbox-align: flex-start;
-    --checkbox-offset: 0.5px;
-  }
-
-  [data-slot="message-part-todo-content"] {
-    line-height: var(--line-height-normal);
-
-    &[data-completed="completed"] {
-      text-decoration: line-through;
-      color: var(--v2-text-text-faint);
-    }
-  }
-}
-
 [data-component="context-tool-group-trigger"] {
   width: 100%;
   min-height: 24px;
@@ -694,7 +673,6 @@
 [data-component="bash-output"],
 [data-component="edit-content"],
 [data-component="write-content"],
-[data-component="todos"],
 [data-component="diagnostics"],
 .error-card {
   -webkit-user-select: text;
@@ -1389,10 +1367,6 @@ body:not([data-new-layout]) {
     color: var(--text-interactive-base);
   }
 
-  [data-slot="message-part-todo-content"][data-completed="completed"] {
-    color: var(--text-weaker);
-  }
-
   [data-component="diagnostics"] {
     background-color: var(--surface-critical-weak);
     border-top: 1px solid var(--border-critical-base);

packages/session-ui/src/components/message-part.tsx

@@ -27,7 +27,6 @@ import {
   TextPart,
   ToolPart,
   UserMessage,
-  Todo,
   QuestionAnswer,
   QuestionInfo,
 } from "@opencode-ai/sdk/v2"
@@ -42,7 +41,6 @@ import { Collapsible } from "@opencode-ai/ui/collapsible"
 import { FileIcon } from "@opencode-ai/ui/file-icon"
 import { Icon } from "@opencode-ai/ui/icon"
 import { ToolErrorCard } from "./tool-error-card"
-import { Checkbox } from "@opencode-ai/ui/checkbox"
 import { DiffChanges } from "@opencode-ai/ui/diff-changes"
 import { Markdown } from "./markdown"
 import { ImagePreview } from "@opencode-ai/ui/image-preview"
@@ -545,11 +543,6 @@ export function getToolInfo(
           ? `${input.files.length} ${i18n.t(input.files.length > 1 ? "ui.common.file.other" : "ui.common.file.one")}`
           : undefined,
       }
-    case "todowrite":
-      return {
-        icon: "checklist",
-        title: i18n.t("ui.tool.todos"),
-      }
     case "question":
       return {
         icon: "bubble-5",
@@ -613,8 +606,6 @@ function taskSession(
 }
 
 const CONTEXT_GROUP_TOOLS = new Set(["read", "glob", "grep", "list"])
-const HIDDEN_TOOLS = new Set(["todowrite"])
-
 function list<T>(value: T[] | undefined | null, fallback: T[]) {
   if (Array.isArray(value)) return value
   return fallback
@@ -718,7 +709,6 @@ function index<T extends { id: string }>(items: readonly T[]) {
 
 export function renderable(part: PartType, showReasoningSummaries = true) {
   if (part.type === "tool") {
-    if (HIDDEN_TOOLS.has(part.tool)) return false
     if (part.tool === "question") return part.state.status !== "pending" && part.state.status !== "running"
     return true
   }
@@ -1498,8 +1488,6 @@ PART_MAPPING["tool"] = function ToolPartDisplay(props) {
   const data = useData()
   const i18n = useI18n()
   const part = () => props.part as ToolPart
-  if (part().tool === "todowrite") return null
-
   const hideQuestion = createMemo(
     () => part().tool === "question" && (part().state.status === "pending" || part().state.status === "running"),
   )
@@ -2476,57 +2464,6 @@ ToolRegistry.register({
   },
 })
 
-ToolRegistry.register({
-  name: "todowrite",
-  render(props) {
-    const i18n = useI18n()
-    const todos = createMemo(() => {
-      const meta = props.metadata?.todos
-      if (Array.isArray(meta)) return meta
-
-      const input = props.input.todos
-      if (Array.isArray(input)) return input
-
-      return []
-    })
-
-    const subtitle = createMemo(() => {
-      const list = todos()
-      if (list.length === 0) return ""
-      return `${list.filter((t: Todo) => t.status === "completed").length}/${list.length}`
-    })
-
-    return (
-      <BasicTool
-        {...props}
-        defaultOpen
-        icon="checklist"
-        trigger={{
-          title: i18n.t("ui.tool.todos"),
-          subtitle: subtitle(),
-        }}
-      >
-        <Show when={todos().length}>
-          <div data-component="todos">
-            <For each={todos()}>
-              {(todo: Todo) => (
-                <Checkbox readOnly checked={todo.status === "completed"}>
-                  <span
-                    data-slot="message-part-todo-content"
-                    data-completed={todo.status === "completed" ? "completed" : undefined}
-                  >
-                    {todo.content}
-                  </span>
-                </Checkbox>
-              )}
-            </For>
-          </div>
-        </Show>
-      </BasicTool>
-    )
-  },
-})
-
 ToolRegistry.register({
   name: "question",
   render(props) {

packages/session-ui/src/components/session-turn.tsx

@@ -104,11 +104,8 @@ function summaryDiff(value: SummaryDiffInput): value is SummaryDiff {
   )
 }
 
-const hidden = new Set(["todowrite"])
-
 function partState(part: PartType, showReasoningSummaries: boolean) {
   if (part.type === "tool") {
-    if (hidden.has(part.tool)) return
     if (part.tool === "question" && (part.state.status === "pending" || part.state.status === "running")) return
     return "visible" as const
   }

packages/session-ui/src/components/timeline-playground.stories.tsx

@@ -399,25 +399,6 @@ const TOOL_SAMPLES = {
     title: "playwriter",
     metadata: {},
   },
-  todowrite: {
-    tool: "todowrite",
-    input: {
-      todos: [
-        { content: "Create data generators", status: "completed", priority: "high" },
-        { content: "Build UI controls", status: "in_progress", priority: "high" },
-        { content: "Add CSS export", status: "pending", priority: "medium" },
-      ],
-    },
-    output: "",
-    title: "Todos",
-    metadata: {
-      todos: [
-        { content: "Create data generators", status: "completed", priority: "high" },
-        { content: "Build UI controls", status: "in_progress", priority: "high" },
-        { content: "Add CSS export", status: "pending", priority: "medium" },
-      ],
-    },
-  },
 }
 
 // ---------------------------------------------------------------------------