diff --git a/apps/web/src/components/ChatView.logic.test.ts b/apps/web/src/components/ChatView.logic.test.ts
index 5d03a782..128b174c 100644
--- a/apps/web/src/components/ChatView.logic.test.ts
+++ b/apps/web/src/components/ChatView.logic.test.ts
@@ -1,5 +1,31 @@
+import { EventId, TurnId, type OrchestrationThreadActivity } from "@t3tools/contracts";
 import { describe, expect, it } from "vitest";
-import { resolveProviderHealthBannerProvider } from "./ChatView.logic";
+import {
+  deriveVisibleThreadWorkLogEntries,
+  resolveProviderHealthBannerProvider,
+} from "./ChatView.logic";
+
+function makeActivity(overrides: {
+  id?: string;
+  createdAt?: string;
+  kind?: string;
+  summary?: string;
+  tone?: OrchestrationThreadActivity["tone"];
+  payload?: Record<string, unknown>;
+  turnId?: string;
+  sequence?: number;
+}): OrchestrationThreadActivity {
+  return {
+    id: EventId.makeUnsafe(overrides.id ?? crypto.randomUUID()),
+    createdAt: overrides.createdAt ?? "2026-02-23T00:00:00.000Z",
+    kind: overrides.kind ?? "tool.started",
+    summary: overrides.summary ?? "Tool call",
+    tone: overrides.tone ?? "tool",
+    payload: overrides.payload ?? {},
+    turnId: overrides.turnId ? TurnId.makeUnsafe(overrides.turnId) : null,
+    ...(overrides.sequence !== undefined ? { sequence: overrides.sequence } : {}),
+  };
+}
 
 describe("resolveProviderHealthBannerProvider", () => {
   it("uses the active session provider when a session exists", () => {
@@ -20,3 +46,29 @@ describe("resolveProviderHealthBannerProvider", () => {
     ).toBe("copilot");
   });
 });
+
+describe("deriveVisibleThreadWorkLogEntries", () => {
+  it("keeps completed tool calls from previous turns visible in the thread timeline", () => {
+    const activities: OrchestrationThreadActivity[] = [
+      makeActivity({
+        id: "tool-1",
+        createdAt: "2026-02-23T00:00:01.000Z",
+        turnId: "turn-1",
+        kind: "tool.completed",
+        summary: "First tool call",
+      }),
+      makeActivity({
+        id: "tool-2",
+        createdAt: "2026-02-23T00:00:03.000Z",
+        turnId: "turn-2",
+        kind: "tool.completed",
+        summary: "Second tool call",
+      }),
+    ];
+
+    expect(deriveVisibleThreadWorkLogEntries(activities).map((entry) => entry.id)).toEqual([
+      "tool-1",
+      "tool-2",
+    ]);
+  });
+});
diff --git a/apps/web/src/components/ChatView.logic.ts b/apps/web/src/components/ChatView.logic.ts
index 11da5b33..7a1c60a3 100644
--- a/apps/web/src/components/ChatView.logic.ts
+++ b/apps/web/src/components/ChatView.logic.ts
@@ -1,9 +1,15 @@
-import { ProjectId, type ProviderKind, type ThreadId } from "@t3tools/contracts";
+import {
+  ProjectId,
+  type OrchestrationThreadActivity,
+  type ProviderKind,
+  type ThreadId,
+} from "@t3tools/contracts";
 import { type ChatMessage, type Thread } from "../types";
 import { randomUUID } from "~/lib/utils";
 import { getAppModelOptions } from "../appSettings";
 import { type ComposerImageAttachment, type DraftThreadState } from "../composerDraftStore";
 import { Schema } from "effect";
+import { deriveWorkLogEntries, type WorkLogEntry } from "../session-logic";
 
 export const LAST_INVOKED_SCRIPT_BY_PROJECT_KEY = "t3code:last-invoked-script-by-project";
 const WORKTREE_BRANCH_PREFIX = "t3code";
@@ -132,3 +138,9 @@ export function resolveProviderHealthBannerProvider(input: {
 }): ProviderKind {
   return input.sessionProvider ?? input.selectedProvider;
 }
+
+export function deriveVisibleThreadWorkLogEntries(
+  activities: ReadonlyArray<OrchestrationThreadActivity>,
+): WorkLogEntry[] {
+  return deriveWorkLogEntries(activities, undefined);
+}
diff --git a/apps/web/src/components/ChatView.tsx b/apps/web/src/components/ChatView.tsx
index 68622d2e..2a9a2760 100644
--- a/apps/web/src/components/ChatView.tsx
+++ b/apps/web/src/components/ChatView.tsx
@@ -80,7 +80,6 @@ import {
   type PendingUserInput,
   type ProviderPickerKind,
   PROVIDER_OPTIONS,
-  deriveWorkLogEntries,
   hasToolActivityForTurn,
   isLatestTurnSettled,
   formatElapsed,
@@ -249,7 +248,10 @@ import {
   computeMessageDurationStart,
   normalizeCompactToolLabel,
 } from "./chat/MessagesTimeline.logic";
-import { resolveProviderHealthBannerProvider } from "./ChatView.logic";
+import {
+  deriveVisibleThreadWorkLogEntries,
+  resolveProviderHealthBannerProvider,
+} from "./ChatView.logic";
 
 function formatMessageMeta(
   createdAt: string,
@@ -1526,8 +1528,8 @@ export default function ChatView({ threadId }: ChatViewProps) {
   );
   const threadActivities = activeThread?.activities ?? EMPTY_ACTIVITIES;
   const workLogEntries = useMemo(
-    () => deriveWorkLogEntries(threadActivities, activeLatestTurn?.turnId ?? undefined),
-    [activeLatestTurn?.turnId, threadActivities],
+    () => deriveVisibleThreadWorkLogEntries(threadActivities),
+    [threadActivities],
   );
   const latestTurnHasToolActivity = useMemo(
     () => hasToolActivityForTurn(threadActivities, activeLatestTurn?.turnId),