From b09cdfaf5b6193a946caef1c4bf8a6c743be328a Mon Sep 17 00:00:00 2001
From: maria-rcks <254055478+maria-rcks@users.noreply.github.com>
Date: Mon, 2 Nov 2026 22:36:39 +0000
Subject: [PATCH] revert(web): undo hover timestamp change from #28610

This reverts commit f3ccba809ba9e3a6a550c65deedfef44d6f95e1d.
---
 .../chat/MessagesTimeline.logic.test.ts       | 54 -------------------
 .../components/chat/MessagesTimeline.logic.ts | 13 ++---
 .../components/chat/TimelineAssistantRows.tsx |  7 ---
 .../chat/timelineMinimapItems.test.ts         |  1 -
 4 files changed, 3 insertions(+), 72 deletions(-)

diff --git a/apps/web/src/components/chat/MessagesTimeline.logic.test.ts b/apps/web/src/components/chat/MessagesTimeline.logic.test.ts
index e32a7eb485fc6..4c7eba620b5d1 100644
--- a/apps/web/src/components/chat/MessagesTimeline.logic.test.ts
+++ b/apps/web/src/components/chat/MessagesTimeline.logic.test.ts
@@ -1528,60 +1528,6 @@ describe("deriveMessagesTimelineRows", () => {
     expect(rows.at(-1)).toMatchObject({ kind: "thinking" });
   });
 
-  it("keeps the latest finished reply's timestamp while a command is still running", () => {
-    const reply = (streaming: boolean) => ({
-      id: "assistant-reply-entry",
-      kind: "message" as const,
-      createdAt: "2026-01-01T00:00:10Z",
-      message: {
-        id: "assistant-reply" as never,
-        role: "assistant" as const,
-        text: "Training finished, checking memory next.",
-        runId: "turn-1" as never,
-        createdAt: "2026-01-01T00:00:10Z",
-        updatedAt: "2026-01-01T00:00:12Z",
-        streaming,
-      },
-    });
-    const rowsWith = (streaming: boolean) =>
-      deriveMessagesTimelineRows({
-        timelineEntries: [
-          reply(streaming),
-          {
-            id: "command-entry",
-            kind: "work",
-            createdAt: "2026-01-01T00:00:15Z",
-            entry: {
-              id: "command",
-              createdAt: "2026-01-01T00:00:15Z",
-              runId: "turn-1" as never,
-              label: "Running command",
-              command: "nvidia-smi",
-              tone: "tool" as const,
-              toolLifecycleStatus: "inProgress" as const,
-            },
-          },
-        ],
-        latestRun: {
-          runId: "turn-1" as never,
-          status: "running",
-          startedAt: "2026-01-01T00:00:00Z",
-          completedAt: null,
-        },
-        isWorking: true,
-        activeTurnStartedAt: "2026-01-01T00:00:00Z",
-        turnDiffSummaries: [],
-        supportsConversationRollback: false,
-      }).find((row) => row.id === "assistant-reply-entry");
-
-    expect(rowsWith(false)).toMatchObject({
-      showAssistantMeta: false,
-      showAssistantTimestamp: true,
-      showAssistantCopyButton: false,
-    });
-    expect(rowsWith(true)).toMatchObject({ showAssistantTimestamp: false });
-  });
-
   it("does not show Thinking once the open run's provider turn has ended", () => {
     const input = {
       timelineEntries: [
diff --git a/apps/web/src/components/chat/MessagesTimeline.logic.ts b/apps/web/src/components/chat/MessagesTimeline.logic.ts
index 8a4a7552901a2..2fe811db4d18f 100644
--- a/apps/web/src/components/chat/MessagesTimeline.logic.ts
+++ b/apps/web/src/components/chat/MessagesTimeline.logic.ts
@@ -591,8 +591,6 @@ type MessagesTimelineRowContent =
       message: ChatMessage;
       projectedItem?: OrchestrationV2ProjectedTurnItem;
       showAssistantMeta: boolean;
-      /** The latest finished reply of a still-running response shows only its timestamp. */
-      showAssistantTimestamp: boolean;
       showAssistantCopyButton: boolean;
       assistantCopyStreaming: boolean;
       assistantTurnDiffSummary?: TurnDiffSummary | undefined;
@@ -2029,10 +2027,10 @@ export function deriveMessagesTimelineRows(input: {
       timelineEntry.message.role === "assistant" &&
       runIdIsActiveResponse(timelineEntry.message.runId);
 
-    const isTerminalAssistantMessage =
+    const showAssistantMeta =
       timelineEntry.message.role === "assistant" &&
-      terminalAssistantMessageIds.has(timelineEntry.message.id);
-    const showAssistantMeta = isTerminalAssistantMessage && !assistantResponseStillInProgress;
+      terminalAssistantMessageIds.has(timelineEntry.message.id) &&
+      !assistantResponseStillInProgress;
 
     nextRows.push({
       kind: "message",
@@ -2043,10 +2041,6 @@ export function deriveMessagesTimelineRows(input: {
         ? {}
         : { projectedItem: timelineEntry.projectedItem }),
       showAssistantMeta,
-      showAssistantTimestamp:
-        isTerminalAssistantMessage &&
-        assistantResponseStillInProgress &&
-        !timelineEntry.message.streaming,
       showAssistantCopyButton: showAssistantMeta,
       assistantCopyStreaming: timelineEntry.message.streaming || assistantResponseStillInProgress,
       assistantTurnDiffSummary:
@@ -2510,7 +2504,6 @@ function isRowUnchanged(a: MessagesTimelineRow, b: MessagesTimelineRow): boolean
         a.message === bm.message &&
         a.projectedItem === bm.projectedItem &&
         a.showAssistantMeta === bm.showAssistantMeta &&
-        a.showAssistantTimestamp === bm.showAssistantTimestamp &&
         a.showAssistantCopyButton === bm.showAssistantCopyButton &&
         a.assistantCopyStreaming === bm.assistantCopyStreaming &&
         a.assistantTurnDiffSummary === bm.assistantTurnDiffSummary &&
diff --git a/apps/web/src/components/chat/TimelineAssistantRows.tsx b/apps/web/src/components/chat/TimelineAssistantRows.tsx
index b425e1009d1b1..458d84b9e982b 100644
--- a/apps/web/src/components/chat/TimelineAssistantRows.tsx
+++ b/apps/web/src/components/chat/TimelineAssistantRows.tsx
@@ -76,13 +76,6 @@ export function AssistantTimelineRow({ row }: { row: Extract<TimelineRow, { kind
             showCopyButton={row.showAssistantCopyButton}
             copyStreaming={row.assistantCopyStreaming}
           />
-        ) : row.showAssistantTimestamp ? (
-          <AssistantMessageMeta
-            className="mt-1.5"
-            message={row.message}
-            showCopyButton={false}
-            copyStreaming={row.assistantCopyStreaming}
-          />
         ) : null}
       </div>
     </>
diff --git a/apps/web/src/components/chat/timelineMinimapItems.test.ts b/apps/web/src/components/chat/timelineMinimapItems.test.ts
index a72813d8f755b..776cd39096a8a 100644
--- a/apps/web/src/components/chat/timelineMinimapItems.test.ts
+++ b/apps/web/src/components/chat/timelineMinimapItems.test.ts
@@ -15,7 +15,6 @@ describe("deriveTimelineMinimapItems", () => {
           id: "image-only",
           createdAt: at,
           showAssistantMeta: false,
-          showAssistantTimestamp: false,
           showAssistantCopyButton: false,
           assistantCopyStreaming: false,
           message: {