fix(app): stop calling new agent work reopened (#4068)

Task snapshots reuse identities after completed work, so backward status transitions do not prove that an old task resumed. Report active work as started and keep pending work in the current task snapshot instead of inventing a reopened event.

packages/app/src/components/message.tsx

@@ -42,7 +42,6 @@ import {
   CircleDot,
   Copy,
   Plus,
-  RotateCcw,
   TriangleAlertIcon,
   Scissors,
   MicVocal,
@@ -2290,8 +2289,6 @@ function taskActivityIcon(activity: TaskActivity) {
       return CircleDot;
     case "completed":
       return Check;
-    case "reopened":
-      return RotateCcw;
     default:
       return CheckSquare;
   }

packages/app/src/i18n/resources.test.ts

@@ -422,7 +422,6 @@ describe("translation resources", () => {
       added: "Added",
       started: "Started",
       completed: "Completed",
-      reopened: "Reopened",
     });
   });
 

packages/app/src/i18n/resources/ar.ts

@@ -345,7 +345,6 @@ export const ar: TranslationResources = {
         added: "أُضيفت",
         started: "بدأت",
         completed: "اكتملت",
-        reopened: "أُعيد فتحها",
       },
     },
     compaction: {

packages/app/src/i18n/resources/en.ts

@@ -343,7 +343,6 @@ export const en = {
         added: "Added",
         started: "Started",
         completed: "Completed",
-        reopened: "Reopened",
       },
     },
     compaction: {

packages/app/src/i18n/resources/es.ts

@@ -348,7 +348,6 @@ export const es: TranslationResources = {
         added: "Añadida",
         started: "Iniciada",
         completed: "Completada",
-        reopened: "Reabierta",
       },
     },
     compaction: {

packages/app/src/i18n/resources/fr.ts

@@ -349,7 +349,6 @@ export const fr: TranslationResources = {
         added: "Ajoutée",
         started: "Commencée",
         completed: "Terminée",
-        reopened: "Rouverte",
       },
     },
     compaction: {

packages/app/src/i18n/resources/ja.ts

@@ -348,7 +348,6 @@ export const ja: TranslationResources = {
         added: "追加",
         started: "開始",
         completed: "完了",
-        reopened: "再開",
       },
     },
     compaction: {

packages/app/src/i18n/resources/ko.ts

@@ -346,7 +346,6 @@ export const ko: TranslationResources = {
         added: "추가됨",
         started: "시작됨",
         completed: "완료됨",
-        reopened: "다시 열림",
       },
     },
     compaction: {

packages/app/src/i18n/resources/pt-BR.ts

@@ -348,7 +348,6 @@ export const ptBR: TranslationResources = {
         added: "Adicionada",
         started: "Iniciada",
         completed: "Concluída",
-        reopened: "Reaberta",
       },
     },
     compaction: {

packages/app/src/i18n/resources/ru.ts

@@ -347,7 +347,6 @@ export const ru: TranslationResources = {
         added: "Добавлена",
         started: "Начата",
         completed: "Завершена",
-        reopened: "Возобновлена",
       },
     },
     compaction: {

packages/app/src/i18n/resources/zh-CN.ts

@@ -345,7 +345,6 @@ export const zhCN: TranslationResources = {
         added: "已添加",
         started: "已开始",
         completed: "已完成",
-        reopened: "已重新打开",
       },
     },
     compaction: {

packages/app/src/runtime/replica-cache/index.ts

@@ -69,7 +69,7 @@ const TodoEntrySchema = z.strictObject({
 const TaskActivitySchema = z.discriminatedUnion("type", [
   z.strictObject({ type: z.literal("created"), count: z.number().int().nonnegative() }),
   z.strictObject({
-    type: z.enum(["added", "started", "completed", "reopened"]),
+    type: z.enum(["added", "started", "completed"]),
     task: z.string(),
   }),
 ]);

packages/app/src/types/stream.test.ts

@@ -1094,6 +1094,30 @@ describe("stream reducer canonical tool calls", () => {
     ]);
   });
 
+  it("reports new work after completed tasks without reopening anything", () => {
+    const state = hydrateStreamState([
+      {
+        event: todoTimeline([
+          { id: "0", text: "Finish old work", completed: true, status: "completed" },
+          { id: "1", text: "Verify old work", completed: true, status: "completed" },
+        ]),
+        timestamp: new Date("2025-01-01T10:50:00Z"),
+      },
+      {
+        event: todoTimeline([
+          { id: "0", text: "Investigate unrelated bug", completed: false, status: "in_progress" },
+          { id: "1", text: "Write unrelated test", completed: false, status: "pending" },
+        ]),
+        timestamp: new Date("2025-01-01T10:51:00Z"),
+      },
+    ]);
+
+    expect(state.flatMap((item) => (item.kind === "todo_list" ? [item.activity] : []))).toEqual([
+      { type: "created", count: 2 },
+      { type: "started", task: "Investigate unrelated bug" },
+    ]);
+  });
+
   it("groups consecutive initial Claude TaskCreate snapshots", () => {
     const state = hydrateStreamState([
       {

packages/app/src/types/stream.ts

@@ -799,7 +799,7 @@ export interface TodoEntry {
 
 export type TaskActivity =
   | { type: "created"; count: number }
-  | { type: "added" | "started" | "completed" | "reopened"; task: string };
+  | { type: "added" | "started" | "completed"; task: string };
 
 export interface TodoListItem {
   kind: "todo_list";
@@ -1307,8 +1307,6 @@ function deriveTaskActivities(
     if (before === after) continue;
     if (after === "completed") {
       activities.push({ type: "completed", task: task.text });
-    } else if (before === "completed") {
-      activities.push({ type: "reopened", task: task.text });
     } else if (after === "in_progress") {
       activities.push({ type: "started", task: task.text });
     }