diff --git a/apps/desktop/src/main/__tests__/streaming-handoff.test.ts b/apps/desktop/src/main/__tests__/streaming-handoff.test.ts
index 7bcb6280e2..5b869d8239 100644
--- a/apps/desktop/src/main/__tests__/streaming-handoff.test.ts
+++ b/apps/desktop/src/main/__tests__/streaming-handoff.test.ts
@@ -88,7 +88,7 @@ function renderLiveTurn(liveTurn: LiveTurnProjection): string {
 }
 
 describe('single live-turn handoff', () => {
-  it('keeps activity in the answer footer before the session or Turn arrives', () => {
+  it('keeps activity in the process row before the session or Turn arrives', () => {
     const session: NonNullable<Parameters<typeof ChatView>[0]['activeSession']> = {
       id: 'session-1', name: 'pending', status: 'running' as const, backend: 'ai-sdk',
       labels: [], isFlagged: false, isArchived: false, hasUnread: false,
@@ -107,8 +107,9 @@ describe('single live-turn handoff', () => {
         onNew() {},
       } satisfies Parameters<typeof ChatView>[0]));
       const { document } = parseHTML(markup);
-      const status = document.querySelector('.maka-assistant-answer [role="status"]');
-      assert.ok(status?.closest('.maka-turn-footer'), 'activity must occupy the shared footer');
+      const status = document.querySelector('.maka-processing-summary [role="status"]');
+      assert.ok(status, 'activity must occupy the process row');
+      assert.equal(document.querySelector('.maka-turn-footer'), null);
       assert.equal(document.querySelector('.maka-assistant-answer [role="toolbar"]'), null);
     }
   });
diff --git a/apps/desktop/src/main/__tests__/transient-message-projection.test.ts b/apps/desktop/src/main/__tests__/transient-message-projection.test.ts
index 961938d14d..fb5cb24477 100644
--- a/apps/desktop/src/main/__tests__/transient-message-projection.test.ts
+++ b/apps/desktop/src/main/__tests__/transient-message-projection.test.ts
@@ -205,3 +205,10 @@ test('keeps a Host-bound current Turn when a later IPC result has no Turn identi
     hostTurnId: 'host-turn',
   });
 });
+
+test('keeps a transient message send time when a later update carries a new timestamp', () => {
+  const first = { ...transient, ts: 2 };
+  const later = { ...transient, ts: 9, text: 'edited text' };
+
+  assert.deepEqual(mergeTransientMessageProjection(first, later), { ...later, ts: 2 });
+});
diff --git a/apps/desktop/src/renderer/application/contracts/transient-message-projection.ts b/apps/desktop/src/renderer/application/contracts/transient-message-projection.ts
index 803a6024b6..b06bea0c6e 100644
--- a/apps/desktop/src/renderer/application/contracts/transient-message-projection.ts
+++ b/apps/desktop/src/renderer/application/contracts/transient-message-projection.ts
@@ -49,6 +49,8 @@ export function mergeTransientMessageProjection(
 ): TransientUserMessage {
   update = {
     ...update,
+    // A Message's send time is written once; an update's `ts` must not move it.
+    ts: current.ts,
     ...(update.pendingSteering === undefined && current.pendingSteering !== undefined ? { pendingSteering: current.pendingSteering } : {}),
     ...(!Object.hasOwn(update, 'deliveryStatus') && current.deliveryStatus !== undefined ? { deliveryStatus: current.deliveryStatus } : {}),
     ...(!Object.hasOwn(update, 'deliveryDetail') && current.deliveryDetail !== undefined ? { deliveryDetail: current.deliveryDetail } : {}),
diff --git a/apps/desktop/src/renderer/styles/native-cursor.css b/apps/desktop/src/renderer/styles/native-cursor.css
index ed42ad88f3..5f34bbd16a 100644
--- a/apps/desktop/src/renderer/styles/native-cursor.css
+++ b/apps/desktop/src/renderer/styles/native-cursor.css
@@ -54,7 +54,8 @@
  * group label (InputGroup: `isGroupLabel`), which names a group via
  * `aria-labelledby` and forwards no click — the `label` selector misses it,
  * so it kept StyleX's hand cursor. Match the stable themeProps class to catch
- * that span too (real <label> field labels are already covered above). */
+ * that span too (real <label> field labels are already covered above).
+ * Disclosure <summary> controls set cursor:pointer in their own stylesheets. */
 :where(
   button,
   label,
@@ -69,7 +70,8 @@
   [role="combobox"],
   [role="radio"],
   [role="checkbox"],
-  [role="treeitem"]
+  [role="treeitem"],
+  summary
 ):not(:disabled):not([aria-disabled="true"]),
 :where(
   button,
@@ -82,7 +84,8 @@
   [role="option"],
   [role="switch"],
   [role="tab"],
-  [role="treeitem"]
+  [role="treeitem"],
+  summary
 ):not(:disabled):not([aria-disabled="true"])
   :where(svg, span, div, p, i, img, path) {
   cursor: default !important;
diff --git a/apps/desktop/stories/app-shell.stories.tsx b/apps/desktop/stories/app-shell.stories.tsx
index 75df23c912..d5b40d894c 100644
--- a/apps/desktop/stories/app-shell.stories.tsx
+++ b/apps/desktop/stories/app-shell.stories.tsx
@@ -680,6 +680,32 @@ const NPM_TEST_STDOUT_AT_CANCEL = "\n> maka@0.2.0 test\n> npm run build:test &&
 // This is the interrupted counterpart to RunningStatusDuringToolRun, and the only
 // story that reaches the interrupted tool row. It goes through the real
 // ChatView → materializeTurns → ToolTrow path, so the row renders inside the
+// Real path: the prompt is admitted, its Turn has not reached the transcript
+// yet. The cue carries no clock until the Turn's own start arrives.
+export const PromptSentBeforeTurnLands: Story = {
+  render: () => (
+    <ComposedShell
+      session={{ status: 'running', streaming: true, lastMessageAt: NOW - 3_000 }}
+      chat={{
+        activeTurn: { turnId: 'turn-sent' },
+        messages: [],
+        transientMessages: [{
+          id: 'msg-sent',
+          text: '刚发出的问题：这一轮的耗时是怎么算出来的？',
+          ts: NOW,
+          transientPlacement: 'current_turn',
+          hostTurnId: 'turn-sent',
+        }],
+      }}
+    />
+  ),
+  play: async ({ canvasElement }) => {
+    await expect(canvasElement.querySelector('.maka-turn-processing')).not.toBeNull();
+    // No clock before the Turn's own start arrives.
+    await expect(canvasElement.querySelector('.maka-turn-elapsed')).toBeNull();
+  },
+};
+
 // production `.maka-turn` frame. The session is `aborted` too, so the sidebar row
 // and composer agree with the transcript instead of still reading as active.
 export const InterruptedToolAfterTurnAbort: Story = {
diff --git a/packages/ui/src/__tests__/chat-turn-answer-identity.test.tsx b/packages/ui/src/__tests__/chat-turn-answer-identity.test.tsx
index 94788f9300..bea2874e51 100644
--- a/packages/ui/src/__tests__/chat-turn-answer-identity.test.tsx
+++ b/packages/ui/src/__tests__/chat-turn-answer-identity.test.tsx
@@ -24,7 +24,7 @@ import { afterEach, test } from 'node:test';
 import { act, StrictMode } from 'react';
 import { createRoot } from 'react-dom/client';
 import { parseHTML } from 'linkedom';
-import { LocalizedChatMessage, TurnRunningStatus, TurnView } from '../chat-turn.js';
+import { LocalizedChatMessage, TurnView } from '../chat-turn.js';
 import { LocaleProvider } from '../locale-context.js';
 import type { TurnTimelineItem, TurnViewModel } from '../materialize.js';
 
@@ -457,7 +457,13 @@ test('rotates working phrases on the elapsed clock without announcing each phras
   const now = Date.UTC(2026, 8, 14, 12);
   context.mock.timers.enable({ apis: ['Date', 'setInterval'], now });
   const { container, root } = domRoot();
-  await act(() => root.render(<LocaleProvider locale="en"><TurnRunningStatus startedAt={now} /></LocaleProvider>));
+  const turn: TurnViewModel = {
+    turnId: 'turn-1', status: 'running', tools: [], notes: [], startedAt: now, timeline: [],
+  };
+  const render = (next: TurnViewModel) => act(() => root.render(
+    <LocaleProvider locale="en"><TurnView turn={next} liveStreaming={{ runningStatus: true }} /></LocaleProvider>,
+  ));
+  await render(turn);
   const status = container.querySelector('[role="status"]')!;
   assert.match(status.textContent, /Pondering/);
   assert.equal(status.getAttribute('aria-label'), 'Working…');
@@ -466,9 +472,11 @@ test('rotates working phrases on the elapsed clock without announcing each phras
   assert.match(status.textContent, /20s/);
   assert.equal(status.getAttribute('aria-label'), 'Working…');
   // Concrete activity takes precedence over the playful phrase.
-  await act(() => root.render(<LocaleProvider locale="en"><TurnRunningStatus startedAt={now} activityLabel="Clicking Save" /></LocaleProvider>));
-  assert.match(status.textContent, /Clicking Save/);
-  assert.doesNotMatch(status.textContent, /Tinkering/);
+  await render({ ...turn, tools: [{
+    toolUseId: 'cu-1', toolName: 'maka_computer', activityKind: 'computer', status: 'running', args: { app: 'Safari' },
+  }] });
+  assert.doesNotMatch(status.textContent ?? '', /Pondering|Tinkering/);
+  assert.notEqual(status.getAttribute('aria-label'), 'Working…');
 });
 
 test('keeps elapsed time while system motion preference changes the working phrase', async (context) => {
@@ -482,7 +490,12 @@ test('keeps elapsed time while system motion preference changes the working phra
     addEventListener(_type: string, listener: () => void) { listeners.add(listener); },
     removeEventListener(_type: string, listener: () => void) { listeners.delete(listener); },
   }) });
-  await act(() => root.render(<LocaleProvider locale="en"><TurnRunningStatus startedAt={now} /></LocaleProvider>));
+  const turn: TurnViewModel = {
+    turnId: 'turn-1', status: 'running', tools: [], notes: [], startedAt: now, timeline: [],
+  };
+  await act(() => root.render(
+    <LocaleProvider locale="en"><TurnView turn={turn} liveStreaming={{ runningStatus: true }} /></LocaleProvider>,
+  ));
   await act(() => context.mock.timers.tick(20_000));
   assert.equal(container.querySelector('.maka-turn-status-label')?.textContent, 'Pondering…');
   assert.equal(container.querySelector('.maka-turn-elapsed')?.textContent, '20s');
@@ -734,20 +747,21 @@ test('a newly failed tool reveals the process while turn recovery stays outside'
   const process = container.querySelector('details.maka-processing-sequence');
   const summary = process?.querySelector('summary');
   assert.ok(process && summary);
-  await act(() => { summary.dispatchEvent(new window.Event('click', { bubbles: true, cancelable: true })); });
   assert.equal(process.hasAttribute('open'), true);
   await act(() => root.render(<LocaleProvider locale="en"><TurnView
     turn={{ ...turnWith([PROCESS_TEXT, { kind: 'tools', items: [{ toolUseId: 'tool-1', toolName: 'read', args: {}, status: 'errored' }] }]), status: 'failed' }}
     failedReasonLabel="Read failed"
     safeResumeAction={{ pending: false, onResume() {} }}
   /></LocaleProvider>));
-  assert.equal(process.hasAttribute('open'), true);
-  assert.match(summary.textContent ?? '', /Needs attention/);
+  // A failed tool is an ordinary row: no label, no reveal.
+  assert.doesNotMatch(summary.textContent ?? '', /Needs attention/);
+  assert.equal(summary.textContent, 'Execution process');
+  assert.equal(process.hasAttribute('open'), false);
   assert.doesNotMatch(process.textContent ?? '', /Continue this turn/);
   assert.match(container.textContent ?? '', /Continue this turn/);
   await act(() => { summary.dispatchEvent(new window.Event('click', { bubbles: true, cancelable: true })); });
-  assert.equal(process.hasAttribute('open'), false);
-  assert.match(container.textContent ?? '', /Continue this turn/);
+  assert.equal(process.hasAttribute('open'), true);
+  assert.equal(container.querySelectorAll('.maka-processing-summary').length, 1);
 });
 
 test('uses a generic process label when no duration is recorded, and localizes known duration', async () => {
diff --git a/packages/ui/src/__tests__/chat-view-empty-compaction.test.tsx b/packages/ui/src/__tests__/chat-view-empty-compaction.test.tsx
index dfa6588bd4..ccb4c9a5a8 100644
--- a/packages/ui/src/__tests__/chat-view-empty-compaction.test.tsx
+++ b/packages/ui/src/__tests__/chat-view-empty-compaction.test.tsx
@@ -126,7 +126,7 @@ test('renders the empty hero when an empty session has no live compaction row',
   assert.doesNotMatch(markup, /Compacting context/);
 });
 
-test('the pending Turn clock ticks from send time and hands over without a duplicate status', async (t) => {
+test('the pending Turn waits without a clock until the Turn start time reaches the client', async (t) => {
   const now = 1_700_000_000_000;
   t.mock.timers.enable({ apis: ['Date', 'setInterval'], now });
   const original = {
@@ -164,14 +164,16 @@ test('the pending Turn clock ticks from send time and hands over without a dupli
   };
   await render({});
   assert.equal(container.querySelectorAll('.maka-turn-processing').length, 1);
-  assert.match(container.querySelector('.maka-turn-elapsed')?.textContent ?? '', /0s/);
+  // No Turn start yet, so no clock.
+  assert.equal(container.querySelector('.maka-turn-elapsed'), null);
   await act(() => t.mock.timers.tick(2_000));
-  assert.match(container.querySelector('.maka-turn-elapsed')?.textContent ?? '', /2s/);
+  assert.equal(container.querySelector('.maka-turn-elapsed'), null);
   await render({
     transientMessages: [],
     messages: [{ type: 'user', id: 'durable-user', turnId: liveTurn.turnId, text: pending.text, ts: pending.ts }],
   });
   assert.equal(container.querySelectorAll('.maka-turn-processing').length, 1);
+  // The Turn's own start drives the clock.
   assert.match(container.querySelector('.maka-turn-elapsed')?.textContent ?? '', /2s/);
   await render({ liveTurns: undefined, activeTurn: undefined, transientMessages: [] });
   assert.equal(container.querySelectorAll('.maka-turn-processing').length, 0);
diff --git a/packages/ui/src/__tests__/turn-running-spinner.test.tsx b/packages/ui/src/__tests__/turn-running-spinner.test.tsx
index 6ac16ce382..0dec43e5ba 100644
--- a/packages/ui/src/__tests__/turn-running-spinner.test.tsx
+++ b/packages/ui/src/__tests__/turn-running-spinner.test.tsx
@@ -125,3 +125,19 @@ test('only the latest assistant segment owns live activity after a user instruct
   assert.match(summaries[1]?.textContent ?? '', /Pondering/);
   assert.equal(document.querySelectorAll('.maka-turn-processing').length, 1);
 });
+
+test('states the elapsed once, in the process header rather than the footer meta', () => {
+  const tool = { toolUseId: 'read', toolName: 'Read', status: 'completed' as const, args: {} };
+  const turn: TurnViewModel = {
+    turnId: 'turn-1', status: 'completed', modelId: 'fixture-model', tools: [tool], notes: [], startedAt: 1,
+    durationMs: 213_000,
+    timeline: [{ kind: 'tools', items: [tool] }, { kind: 'text', messageId: 'answer', text: 'the answer' }],
+  };
+  const { document } = parseHTML(renderToStaticMarkup(
+    <LocaleProvider locale="en">
+      <TurnView turn={turn} footerActions={[{ id: 'copy', label: 'Copy', enabled: true }]} />
+    </LocaleProvider>,
+  ));
+  assert.match(document.querySelector('.maka-processing-summary')?.textContent ?? '', /Worked for 3m 33s/);
+  assert.equal(document.querySelector('.maka-turn-footer-meta')?.textContent, 'fixture-model');
+});
diff --git a/packages/ui/src/chat-turn.tsx b/packages/ui/src/chat-turn.tsx
index 70908cb677..99294baa30 100644
--- a/packages/ui/src/chat-turn.tsx
+++ b/packages/ui/src/chat-turn.tsx
@@ -64,7 +64,7 @@ import { foldTimeline, type FoldedTimelineChild, type FoldedTimelineEntry } from
 import { AttachmentKindIcon } from './attachment-kinds.js';
 import { QuoteRefChip } from './quote-ref-chip.js';
 import { Marker, markerVariants } from './primitives/chat.js';
-import { ToolTrow, toolTrowHasVisibleSpinner } from './tool-activity.js';
+import { ToolTrow } from './tool-activity.js';
 import { formatBytes } from './tool-activity/preview-utils.js';
 import { useUiLocale } from './locale-context.js';
 import type { UiLocale } from '@maka/core/ui-locale';
@@ -500,9 +500,6 @@ export const TurnView = memo(function TurnView(props: {
     () => splitTimelineAtUserMessages(foldedTimeline, showAssistantMessage),
     [foldedTimeline, showAssistantMessage],
   );
-  const toolSurfaceOwnsSpinner = turn.timeline.some(
-    (item) => item.kind === 'tools' && toolTrowHasVisibleSpinner(item.items),
-  );
   return (
     <section
       className="maka-turn"
@@ -672,6 +669,9 @@ export const TurnView = memo(function TurnView(props: {
         const activityProcessIndex = ownsTurnChrome
           ? segment.items.findLastIndex((item) => item.kind === 'processing')
           : -1;
+        // Every Turn owns this row, empty or not, so the cue never moves and
+        // settlement does not shift the transcript.
+        const liveWorkOwnsDisclosure = ownsTurnChrome && activityProcessIndex === -1;
         // Disjoint namespaces: a steering id is any string, so a bare
         // sentinel could collide with a real one.
         const assistantKey =
@@ -694,6 +694,18 @@ export const TurnView = memo(function TurnView(props: {
                 and Astryx tool group in the order the model produced them.
                 Intermediate text, reasoning and tools share a disclosure;
                 the final reply and inserted user instructions stay outside. */}
+              {liveWorkOwnsDisclosure && (
+                <ProcessingBlock
+                  key="processing-status"
+                  activityObserved={props.activityObserved}
+                  entries={[]}
+                  running={!!props.liveStreaming || turn.status === 'running'}
+                  durationMs={turn.durationMs}
+                  activity={props.liveStreaming?.runningStatus && !props.liveStreaming.providerRetry
+                    ? { startedAt: turn.startedAt, label: runningToolLabel }
+                    : undefined}
+                />
+              )}
               {segment.items.map((item, index) =>
                 item.kind === 'processing' ? (
                   <ProcessingBlock
@@ -797,12 +809,6 @@ export const TurnView = memo(function TurnView(props: {
                 live={!!props.liveStreaming}
                 activity={props.liveStreaming?.providerRetry ? (
                   <ModelProviderRetryIndicator retry={props.liveStreaming.providerRetry} />
-                ) : props.liveStreaming?.runningStatus && activityProcessIndex === -1 ? (
-                  <TurnRunningStatus
-                    startedAt={turn.startedAt}
-                    showSpinner={!toolSurfaceOwnsSpinner}
-                    activityLabel={runningToolLabel}
-                  />
                 ) : undefined}
                 context={answerContext}
                 onAction={
@@ -994,12 +1000,10 @@ export function TurnFooter(props: {
   );
 }
 
-/** "model · duration · cost" for a settled turn; undefined when there is nothing to say. */
+/** "model · cost" for a settled turn; the elapsed lives in the process row. */
 function turnMetaSummary(turn: TurnViewModel): string | undefined {
   const parts: string[] = [];
   if (turn.modelId) parts.push(turn.modelId);
-  // Duration counts whole seconds, so anything under one would read「0s」.
-  if (turn.durationMs && turn.durationMs >= 1_000) parts.push(formatTurnDuration(turn.durationMs));
   if (turn.tokens?.costUsd && turn.tokens.costUsd > 0) parts.push(`$${turn.tokens.costUsd.toFixed(4)}`);
   return parts.length > 0 ? parts.join(' · ') : undefined;
 }
@@ -1025,9 +1029,8 @@ const WORKING_PHRASE_INTERVAL_MS = 20_000;
  * rare fallback path where streaming beat the user turn into the transcript;
  * the phrase then stands alone.
  */
-export function TurnRunningStatus(props: {
+function TurnRunningStatus(props: {
   startedAt?: number;
-  showSpinner?: boolean;
   activityLabel?: string;
 }) {
   const copy = getConversationCopy(useUiLocale()).messages;
@@ -1046,9 +1049,6 @@ export function TurnRunningStatus(props: {
       aria-label={props.activityLabel ?? copy.processing}
       ref={rootRef}
     >
-      {props.showSpinner !== false && (
-        <Spinner size="md" shade="subtle" aria-hidden="true" />
-      )}
       {/* Name the activity once; the clock must not announce each second. */}
       <span className="maka-turn-indicator-text" aria-hidden="true">
         <span className="maka-turn-status-label">
@@ -1325,7 +1325,7 @@ function TurnTimelineEntry(props: {
   );
 }
 
-function ProcessingBlock(props: {
+export function ProcessingBlock(props: {
   activityObserved?: boolean;
   entries: FoldedTimelineChild[];
   running: boolean;
@@ -1339,21 +1339,13 @@ function ProcessingBlock(props: {
   const copy = getConversationCopy(useUiLocale()).messages;
   // null follows the lifecycle: open while running, collapsed on completion.
   // Settled reader choices survive appended events. Live work stays expanded.
+  // A failed tool is an ordinary row: no label and no reveal of its own.
   const [manualOpen, setManualOpen] = useState<boolean | null>(null);
-  const needsAttention = props.entries.some((entry) => entry.kind === 'tools'
-    && entry.items.some((tool) => tool.status === 'errored' || tool.status === 'interrupted'));
-  // Reveal a new failure even if a prior settled process was collapsed.
-  // They can close it again once settled; its attention label remains visible. Permission
-  // requests and turn recovery banners are owned outside the timeline.
-  useEffect(() => {
-    if (needsAttention) setManualOpen(null);
-  }, [needsAttention]);
-  const open = props.running || (manualOpen ?? needsAttention);
+  const open = props.running || manualOpen === true;
   const seconds = props.durationMs !== undefined && Number.isFinite(props.durationMs)
     ? Math.floor(Math.max(0, props.durationMs) / 1000)
     : undefined;
-  const label = needsAttention ? copy.processNeedsAttention
-    : props.running || seconds === undefined ? copy.processDetails
+  const label = props.running || seconds === undefined ? copy.processDetails
     : copy.processDuration(Math.floor(seconds / 60), seconds % 60);
   return (
     <details
@@ -1372,11 +1364,10 @@ function ProcessingBlock(props: {
           if (!props.running) setManualOpen(!open);
         }}
       >
-        {props.activity && !needsAttention ? (
+        {props.activity ? (
           <TurnRunningStatus
             startedAt={props.activity.startedAt}
             activityLabel={props.activity.label}
-            showSpinner={false}
           />
         ) : <span>{label}</span>}
         {!props.running && <ChevronRight size={ICON_SIZE.meta} aria-hidden="true" />}
diff --git a/packages/ui/src/chat-view.tsx b/packages/ui/src/chat-view.tsx
index 7fc56e87a2..e3c9ac493b 100644
--- a/packages/ui/src/chat-view.tsx
+++ b/packages/ui/src/chat-view.tsx
@@ -51,7 +51,7 @@ import type { LiveTurnProjection } from './live-turn-projection.js';
 import {
   ModelProviderRetryIndicator,
   LocalizedChatMessage,
-  TurnRunningStatus,
+  ProcessingBlock,
   TurnFooter,
   TurnView,
   TransientUserMessage,
@@ -405,10 +405,6 @@ export function ChatView(props: {
   const tailTurnId = streamingActive ? props.activeTurn?.turnId : undefined;
   const runningStatus = streamingActive && !props.activeTurn?.awaitingInput;
   const hasRenderedLiveTurn = tailTurnId !== undefined && turns.some((turn) => turn.turnId === tailTurnId);
-  const pendingRunningStartedAt = transientMessages.findLast((message) =>
-    message.transientPlacement === 'current_turn'
-    && tailTurnId !== undefined && message.hostTurnId === tailTurnId,
-  )?.ts ?? activeContent?.startedAt;
   const boundaryOverlayTurnId = activeContent?.turnId
     ?? (streamingActive ? tailTurnId : undefined);
   // One rail tick per turn that carries a user prompt (Codex-style prompt
@@ -657,18 +653,10 @@ export function ChatView(props: {
                   ))}
                 </section>
               )}
-              {/* The optimistic message supplies the clock while the session is created. */}
+              {/* The pre-Turn cue is the same summary row the process uses. */}
               {runningStatus && (
                 <section className="maka-turn" data-live-streaming="true">
-                  <LocalizedChatMessage
-                    accessibleLabel={conversationCopy.messages.assistantAriaLabel}
-                    sender="assistant"
-                    className="maka-chat-message maka-assistant-answer"
-                  >
-                    <TurnFooter actions={[]} live context="" activity={
-                      <TurnRunningStatus startedAt={pendingRunningStartedAt} />
-                    } />
-                  </LocalizedChatMessage>
+                  <ProcessingBlock entries={[]} running activity={{}} />
                 </section>
               )}
             </>
@@ -856,19 +844,19 @@ export function ChatView(props: {
                   that same TurnView can take over. */}
               {streamingActive && !hasRenderedLiveTurn && (
                 <section className="maka-turn" data-live-streaming="true">
-                  <LocalizedChatMessage
-                    accessibleLabel={conversationCopy.messages.assistantAriaLabel}
-                    sender="assistant"
-                    className="maka-chat-message maka-assistant-answer"
-                  >
-                    <TurnFooter actions={[]} live context="" activity={
-                      activeContent?.turnId === tailTurnId && activeContent?.providerRetry ? (
+                  {activeContent && activeContent.turnId === tailTurnId && activeContent.providerRetry ? (
+                    <LocalizedChatMessage
+                      accessibleLabel={conversationCopy.messages.assistantAriaLabel}
+                      sender="assistant"
+                      className="maka-chat-message maka-assistant-answer"
+                    >
+                      <TurnFooter actions={[]} live context="" activity={
                         <ModelProviderRetryIndicator retry={activeContent.providerRetry} />
-                      ) : (
-                        (runningStatus && <TurnRunningStatus startedAt={pendingRunningStartedAt} />)
-                      )
-                    } />
-                  </LocalizedChatMessage>
+                      } />
+                    </LocalizedChatMessage>
+                  ) : runningStatus ? (
+                    <ProcessingBlock entries={[]} running activity={{}} />
+                  ) : null}
                 </section>
               )}
               {conversationItemPlacement.orphan && (
diff --git a/packages/ui/src/conversation-copy.ts b/packages/ui/src/conversation-copy.ts
index 76c2c3701c..6e23672340 100644
--- a/packages/ui/src/conversation-copy.ts
+++ b/packages/ui/src/conversation-copy.ts
@@ -285,7 +285,6 @@ export interface ConversationCopy {
     workingPhrases: readonly string[];
     processDetails: string;
     processDuration: (minutes: number, seconds: number) => string;
-    processNeedsAttention: string;
     providerRetryScheduled: (seconds: number, attempt: number, maxAttempts: number) => string;
     providerRetryStarted: (attempt: number, maxAttempts: number) => string;
     providerRetryWaiting: (attempt: number, maxAttempts: number) => string;
@@ -553,7 +552,7 @@ const CONVERSATION_COPY = {
       chooseAriaLabel: (label, branch) => branch ? `选择项目：${label}，当前分支 ${branch}` : `选择项目：${label}`,
     },
     messages: {
-      you: '你', assistant: 'Maka', processing: '正在处理…', continuing: '继续中…', workingPhrases: ['正在琢磨…', '正在推敲…', '正在盘算…', '正在钻研…', '正在忙活…', '正在梳理…', '正在打磨…', '正在鼓捣…', '正在酝酿…', '正在攻坚…', '正在权衡…', '正在拾掇…'], processDetails: '执行过程', processDuration: (minutes, seconds) => `用时 ${minutes > 0 ? `${minutes}分 ` : ''}${seconds}秒`, processNeedsAttention: '执行过程 · 需要处理', providerRetryScheduled: (seconds, attempt, maxAttempts) => `${formatRetryDelay(seconds, { day: '天', hour: '小时', minute: '分', second: '秒' })}后重试（${attempt}/${maxAttempts}）`, providerRetryStarted: (attempt, maxAttempts) => `正在重试（${attempt}/${maxAttempts}）`, providerRetryWaiting: (attempt, maxAttempts) => `等待重试（${attempt}/${maxAttempts}）`, providerRetryReason: { stream_truncated: '响应中途断开', network: '网络中断', provider_capacity: '模型服务暂时满载', provider_unavailable: '模型服务暂时不可用', rate_limit: '触发模型速率限制', timeout: '请求超时', unknown: '模型请求失败' }, failureDetailsUnavailable: '无可用诊断详情。', safeResumePending: '正在检查…', safeResume: '继续这一轮', thinking: '深度思考', truncated: '已截断', copied: '已复制', copying: '复制中', copyFailed: '复制失败', copy: '复制', editMessage: '编辑并重发', editMessageDisabledRunning: '当前回答仍在进行中，结束后再编辑', editMessageDisabledAttachments: '包含附件的历史消息暂不支持编辑并重发', editMessageDisabledQuotes: '包含引用的历史消息暂不支持编辑并重发', editMessageDisabledTransformedText: '包含已展开上下文的历史消息暂不支持编辑并重发',
+      you: '你', assistant: 'Maka', processing: '正在处理…', continuing: '继续中…', workingPhrases: ['正在琢磨…', '正在推敲…', '正在盘算…', '正在钻研…', '正在忙活…', '正在梳理…', '正在打磨…', '正在鼓捣…', '正在酝酿…', '正在攻坚…', '正在权衡…', '正在拾掇…'], processDetails: '执行过程', processDuration: (minutes, seconds) => `用时 ${minutes > 0 ? `${minutes}分 ` : ''}${seconds}秒`, providerRetryScheduled: (seconds, attempt, maxAttempts) => `${formatRetryDelay(seconds, { day: '天', hour: '小时', minute: '分', second: '秒' })}后重试（${attempt}/${maxAttempts}）`, providerRetryStarted: (attempt, maxAttempts) => `正在重试（${attempt}/${maxAttempts}）`, providerRetryWaiting: (attempt, maxAttempts) => `等待重试（${attempt}/${maxAttempts}）`, providerRetryReason: { stream_truncated: '响应中途断开', network: '网络中断', provider_capacity: '模型服务暂时满载', provider_unavailable: '模型服务暂时不可用', rate_limit: '触发模型速率限制', timeout: '请求超时', unknown: '模型请求失败' }, failureDetailsUnavailable: '无可用诊断详情。', safeResumePending: '正在检查…', safeResume: '继续这一轮', thinking: '深度思考', truncated: '已截断', copied: '已复制', copying: '复制中', copyFailed: '复制失败', copy: '复制', editMessage: '编辑并重发', editMessageDisabledRunning: '当前回答仍在进行中，结束后再编辑', editMessageDisabledAttachments: '包含附件的历史消息暂不支持编辑并重发', editMessageDisabledQuotes: '包含引用的历史消息暂不支持编辑并重发', editMessageDisabledTransformedText: '包含已展开上下文的历史消息暂不支持编辑并重发',
       editMessageDisabledDirectoryReferences: '包含文件夹引用的历史消息暂不支持编辑并重发',
       userAriaLabel: '你发送的消息', systemAriaLabel: '系统消息', assistantAriaLabel: 'Maka 的回答', answerActionsAriaLabel: (context) => `回答操作${context ? `：${context}` : ''}`, answerActionAriaLabel: (action, context) => `${action}回答${context ? `：${context}` : ''}`, messageActionAriaLabel: (action, context) => `${action}消息${context ? `：${context}` : ''}`, sourceAriaLabel: '本轮回答的来源', derivativesAriaLabel: '本轮回答的衍生', scheduledTaskTriggered: '定时任务触发', scheduledTaskTitle: (id) => `由定时任务触发 · ${id}`, legacyAutomationTriggered: '旧版自动化（仅历史）', legacyAutomationTitle: (id) => `由旧版自动化触发 · ${id} · 仅保留历史，不会再次执行`, goalContinued: 'Goal 自动继续', goalTitle: (id) => `由 Goal 继续执行 · ${id}`, agentGraphTriggered: 'Agent Graph 自动继续', agentGraphTitle: (graphId) => `由 Agent Graph 调度器触发 · ${graphId}`,
       thinkingTruncatedTitle: '部分 reasoning 已截断；显示的是最近的内容', outputTruncatedTitle: '助手输出已超过单次回合上限，超出部分未渲染。如需完整内容请重新生成或查看持久化的任务日志。', removeAttachmentAriaLabel: (name) => `移除 ${name}`, quoteLabel: '引用', quoteExpandAriaLabel: '展开引用全文', quoteCollapseAriaLabel: '收起引用', removeQuoteAriaLabel: '移除引用', aborted: '已中断', abortedByStop: '已中断 · 由停止按钮触发',
@@ -711,7 +710,7 @@ const CONVERSATION_COPY = {
       chooseAriaLabel: (label, branch) => branch ? `選擇專案：${label}，目前分支 ${branch}` : `選擇專案：${label}`,
     },
     messages: {
-      you: '你', assistant: 'Maka', processing: '正在處理…', continuing: '繼續中…', workingPhrases: ['正在琢磨…', '正在推敲…', '正在盤算…', '正在鑽研…', '正在忙活…', '正在梳理…', '正在打磨…', '正在鼓搗…', '正在醞釀…', '正在攻堅…', '正在權衡…', '正在拾掇…'], processDetails: '執行過程', processDuration: (minutes, seconds) => `用時 ${minutes > 0 ? `${minutes}分 ` : ''}${seconds}秒`, processNeedsAttention: '執行過程 · 需要處理', providerRetryScheduled: (seconds, attempt, maxAttempts) => `${formatRetryDelay(seconds, { day: '天', hour: '小時', minute: '分', second: '秒' })}後重試（${attempt}/${maxAttempts}）`, providerRetryStarted: (attempt, maxAttempts) => `正在重試（${attempt}/${maxAttempts}）`, providerRetryWaiting: (attempt, maxAttempts) => `等待重試（${attempt}/${maxAttempts}）`, providerRetryReason: { stream_truncated: '回應中途斷開', network: '網路中斷', provider_capacity: '模型服務暫時滿載', provider_unavailable: '模型服務暫時不可用', rate_limit: '觸發模型速率限制', timeout: '請求超時', unknown: '模型請求失敗' }, failureDetailsUnavailable: '無可用診斷詳情。', safeResumePending: '正在檢查…', safeResume: '繼續這一輪', thinking: '深度思考', truncated: '已截斷', copied: '已複製', copying: '複製中', copyFailed: '複製失敗', copy: '複製', editMessage: '編輯並重發', editMessageDisabledRunning: '目前回答仍在進行中，結束後再編輯', editMessageDisabledAttachments: '包含附件的歷史訊息暫不支援編輯並重發', editMessageDisabledQuotes: '包含引用的歷史訊息暫不支援編輯並重發', editMessageDisabledTransformedText: '包含已展開上下文的歷史訊息暫不支援編輯並重發',
+      you: '你', assistant: 'Maka', processing: '正在處理…', continuing: '繼續中…', workingPhrases: ['正在琢磨…', '正在推敲…', '正在盤算…', '正在鑽研…', '正在忙活…', '正在梳理…', '正在打磨…', '正在鼓搗…', '正在醞釀…', '正在攻堅…', '正在權衡…', '正在拾掇…'], processDetails: '執行過程', processDuration: (minutes, seconds) => `用時 ${minutes > 0 ? `${minutes}分 ` : ''}${seconds}秒`, providerRetryScheduled: (seconds, attempt, maxAttempts) => `${formatRetryDelay(seconds, { day: '天', hour: '小時', minute: '分', second: '秒' })}後重試（${attempt}/${maxAttempts}）`, providerRetryStarted: (attempt, maxAttempts) => `正在重試（${attempt}/${maxAttempts}）`, providerRetryWaiting: (attempt, maxAttempts) => `等待重試（${attempt}/${maxAttempts}）`, providerRetryReason: { stream_truncated: '回應中途斷開', network: '網路中斷', provider_capacity: '模型服務暫時滿載', provider_unavailable: '模型服務暫時不可用', rate_limit: '觸發模型速率限制', timeout: '請求超時', unknown: '模型請求失敗' }, failureDetailsUnavailable: '無可用診斷詳情。', safeResumePending: '正在檢查…', safeResume: '繼續這一輪', thinking: '深度思考', truncated: '已截斷', copied: '已複製', copying: '複製中', copyFailed: '複製失敗', copy: '複製', editMessage: '編輯並重發', editMessageDisabledRunning: '目前回答仍在進行中，結束後再編輯', editMessageDisabledAttachments: '包含附件的歷史訊息暫不支援編輯並重發', editMessageDisabledQuotes: '包含引用的歷史訊息暫不支援編輯並重發', editMessageDisabledTransformedText: '包含已展開上下文的歷史訊息暫不支援編輯並重發',
       editMessageDisabledDirectoryReferences: '包含資料夾引用的歷史訊息暫不支援編輯並重發',
       userAriaLabel: '你傳送的訊息', systemAriaLabel: '系統訊息', assistantAriaLabel: 'Maka 的回答', answerActionsAriaLabel: (context) => `回答操作${context ? `：${context}` : ''}`, answerActionAriaLabel: (action, context) => `${action}回答${context ? `：${context}` : ''}`, messageActionAriaLabel: (action, context) => `${action}訊息${context ? `：${context}` : ''}`, sourceAriaLabel: '本輪迴答的來源', derivativesAriaLabel: '本輪迴答的衍生', scheduledTaskTriggered: '定時任務觸發', scheduledTaskTitle: (id) => `由定時任務觸發 · ${id}`, legacyAutomationTriggered: '舊版自動化（僅歷史）', legacyAutomationTitle: (id) => `由舊版自動化觸發 · ${id} · 僅保留歷史，不會再次執行`, goalContinued: 'Goal 自動繼續', goalTitle: (id) => `由 Goal 繼續執行 · ${id}`, agentGraphTriggered: 'Agent Graph 自動繼續', agentGraphTitle: (graphId) => `由 Agent Graph 排程器觸發 · ${graphId}`,
       thinkingTruncatedTitle: '部分 reasoning 已截斷；顯示的是最近的內容', outputTruncatedTitle: '助手輸出已超過單次回合上限，超出部分未渲染。如需完整內容請重新生成或檢視持久化的任務記錄。', removeAttachmentAriaLabel: (name) => `移除 ${name}`, quoteLabel: '引用', quoteExpandAriaLabel: '展開引用全文', quoteCollapseAriaLabel: '收起引用', removeQuoteAriaLabel: '移除引用', aborted: '(已中斷)', abortedByStop: '(已中斷 · 由停止按鈕觸發)',
@@ -895,7 +894,7 @@ const CONVERSATION_COPY = {
       chooseAriaLabel: (label, branch) => branch ? `Choose project: ${label}, current branch ${branch}` : `Choose project: ${label}`,
     },
     messages: {
-      you: 'You', assistant: 'Maka', processing: 'Working…', continuing: 'Continuing…', workingPhrases: ['Pondering…', 'Tinkering…', 'Untangling…', 'Digging in…', 'Mulling…', 'Chewing on it…', 'Wrangling…', 'Piecing it together…'], processDetails: 'Execution process', processDuration: (minutes, seconds) => `Worked for ${minutes > 0 ? `${minutes}m ` : ''}${seconds}s`, processNeedsAttention: 'Execution process · Needs attention', providerRetryScheduled: (seconds, attempt, maxAttempts) => `Retrying in ${formatRetryDelay(seconds, { day: 'd', hour: 'h', minute: 'm', second: 's' })} (${attempt}/${maxAttempts})`, providerRetryStarted: (attempt, maxAttempts) => `Retrying (${attempt}/${maxAttempts})`, providerRetryWaiting: (attempt, maxAttempts) => `Waiting to retry (${attempt}/${maxAttempts})`, providerRetryReason: { stream_truncated: 'Response stream ended before completion', network: 'Network interrupted', provider_capacity: 'The model service is temporarily at capacity', provider_unavailable: 'Model service temporarily unavailable', rate_limit: 'Model rate limit reached', timeout: 'Request timed out', unknown: 'Model request failed' }, failureDetailsUnavailable: 'No diagnostic details are available.', safeResumePending: 'Checking…', safeResume: 'Continue this turn', thinking: 'Thinking', truncated: 'Truncated', copied: 'Copied', copying: 'Copying', copyFailed: 'Copy failed', copy: 'Copy', editMessage: 'Edit & resend', editMessageDisabledRunning: 'Wait for this answer to finish before editing', editMessageDisabledAttachments: 'Edit & resend does not yet support messages with attachments', editMessageDisabledQuotes: 'Edit & resend does not yet support messages with quotes', editMessageDisabledTransformedText: 'Edit & resend does not yet support messages with expanded context',
+      you: 'You', assistant: 'Maka', processing: 'Working…', continuing: 'Continuing…', workingPhrases: ['Pondering…', 'Tinkering…', 'Untangling…', 'Digging in…', 'Mulling…', 'Chewing on it…', 'Wrangling…', 'Piecing it together…'], processDetails: 'Execution process', processDuration: (minutes, seconds) => `Worked for ${minutes > 0 ? `${minutes}m ` : ''}${seconds}s`, providerRetryScheduled: (seconds, attempt, maxAttempts) => `Retrying in ${formatRetryDelay(seconds, { day: 'd', hour: 'h', minute: 'm', second: 's' })} (${attempt}/${maxAttempts})`, providerRetryStarted: (attempt, maxAttempts) => `Retrying (${attempt}/${maxAttempts})`, providerRetryWaiting: (attempt, maxAttempts) => `Waiting to retry (${attempt}/${maxAttempts})`, providerRetryReason: { stream_truncated: 'Response stream ended before completion', network: 'Network interrupted', provider_capacity: 'The model service is temporarily at capacity', provider_unavailable: 'Model service temporarily unavailable', rate_limit: 'Model rate limit reached', timeout: 'Request timed out', unknown: 'Model request failed' }, failureDetailsUnavailable: 'No diagnostic details are available.', safeResumePending: 'Checking…', safeResume: 'Continue this turn', thinking: 'Thinking', truncated: 'Truncated', copied: 'Copied', copying: 'Copying', copyFailed: 'Copy failed', copy: 'Copy', editMessage: 'Edit & resend', editMessageDisabledRunning: 'Wait for this answer to finish before editing', editMessageDisabledAttachments: 'Edit & resend does not yet support messages with attachments', editMessageDisabledQuotes: 'Edit & resend does not yet support messages with quotes', editMessageDisabledTransformedText: 'Edit & resend does not yet support messages with expanded context',
       editMessageDisabledDirectoryReferences: 'Edit & resend does not yet support messages with folder references',
       userAriaLabel: 'Your message', systemAriaLabel: 'System message', assistantAriaLabel: "Maka's response", answerActionsAriaLabel: (context) => `Response actions${context ? `: ${context}` : ''}`, answerActionAriaLabel: (action, context) => `${action} response${context ? `: ${context}` : ''}`, messageActionAriaLabel: (action, context) => `${action} message${context ? `: ${context}` : ''}`, sourceAriaLabel: 'Source of this response', derivativesAriaLabel: 'Responses derived from this one', scheduledTaskTriggered: 'Triggered by scheduled task', scheduledTaskTitle: (id) => `Triggered by scheduled task · ${id}`, legacyAutomationTriggered: 'Legacy Automation (history only)', legacyAutomationTitle: (id) => `Triggered by legacy Automation · ${id} · Historical only; it will not run again`, goalContinued: 'Continued by Goal', goalTitle: (id) => `Continued by Goal · ${id}`, agentGraphTriggered: 'Continued by Agent Graph', agentGraphTitle: (graphId) => `Triggered by the Agent Graph scheduler · ${graphId}`,
       thinkingTruncatedTitle: 'Some reasoning was truncated; showing the most recent content', outputTruncatedTitle: 'The assistant output exceeded the per-turn limit. Regenerate it or inspect the persisted task log for the complete content.', removeAttachmentAriaLabel: (name) => `Remove ${name}`, quoteLabel: 'Quote', quoteExpandAriaLabel: 'Show the full quoted excerpt', quoteCollapseAriaLabel: 'Collapse the quoted excerpt', removeQuoteAriaLabel: 'Remove quote', aborted: 'Interrupted', abortedByStop: 'Interrupted · Stop button',
diff --git a/packages/ui/src/styles.css b/packages/ui/src/styles.css
index 1af7e4ca80..b2212f445e 100644
--- a/packages/ui/src/styles.css
+++ b/packages/ui/src/styles.css
@@ -269,17 +269,17 @@
   color: var(--muted-foreground);
   font: var(--maka-text-body);
   list-style: none;
-  cursor: pointer;
 }
 .maka-processing-summary::-webkit-details-marker { display: none; }
 .maka-processing-summary:hover { color: var(--foreground); }
 .maka-processing-summary:focus-visible { outline: var(--focus-ring-width) solid var(--focus-ring); outline-offset: calc(-1 * var(--focus-ring-width)); }
 .maka-processing-summary > svg { flex-shrink: 0; transition: transform var(--duration-fast) var(--ease-standard); }
 .maka-processing-summary .maka-turn-processing { margin: 0; }
-.maka-processing-summary[aria-disabled='true'] { cursor: default; }
 .maka-processing-summary[aria-disabled='true']:hover { color: var(--muted-foreground); }
 .maka-processing-sequence[open] > .maka-processing-summary > svg { transform: rotate(90deg); }
 .maka-processing-content { display: flex; min-width: 0; flex-direction: column; gap: 8px; padding-block: 12px 4px; }
+/* An empty disclosure is only its summary row. */
+.maka-processing-content:empty { display: none; }
 /* Match Astryx ChatToolCalls' grid disclosure motion. The native details
    content remains rendered through exit, without a second open state or timer.
    Unsupported browsers retain the native immediate disclosure. */
diff --git a/packages/ui/src/tool-activity.tsx b/packages/ui/src/tool-activity.tsx
index f635ed4bce..ad89254b33 100644
--- a/packages/ui/src/tool-activity.tsx
+++ b/packages/ui/src/tool-activity.tsx
@@ -373,15 +373,6 @@ export function ToolTrow({
   );
 }
 
-/** Whether a visible, collapsed ChatToolCalls row owns the active spinner. */
-export function toolTrowHasVisibleSpinner(items: readonly ToolActivityItem[]): boolean {
-  return items.some((item, index) =>
-    !isLinkedAgentResult(item.result)
-    && isInFlightToolStatus(toolActivityPresentationStatus(item))
-    && (index === items.length - 1 || isLinkedAgentResult(items[index + 1]?.result)),
-  );
-}
-
 type LinkedAgentRow = {
   key: string;
   name: string;
diff --git a/scripts/perf/geometry-ablation.mjs b/scripts/perf/geometry-ablation.mjs
index 5d64fa871d..3e7d5604ad 100644
--- a/scripts/perf/geometry-ablation.mjs
+++ b/scripts/perf/geometry-ablation.mjs
@@ -139,7 +139,9 @@ if (process.versions.electron) {
         // expanded reading state, otherwise the 45-tool scene has no overflow.
         const summaries = page.locator('.maka-processing-sequence:not([open]) > summary');
         const expandedProcess = (await summaries.count()) > 0;
-        for (const summary of await summaries.all()) await summary.click();
+        // Expand every collapsed process disclosure. Re-resolve each time: a
+        // click flips the element to [open], so an index-based list goes stale.
+        while ((await summaries.count()) > 0) await summaries.first().click();
         await page.evaluate(() => document.fonts.ready);
         await expect(page.locator('.maka-markdown-pending')).toHaveCount(0);
         if (expandedProcess) {