fix(agent-status): suppress stamped turn replays

src/renderer/src/components/terminal-pane/agent-completion-coordinator.test.ts

@@ -1277,7 +1277,7 @@ describe('agent completion coordinator', () => {
     )
   })
 
-  it('pairs a background all-clear with the turn it announced even after a working title blip', () => {
+  it('does not replay a stamped turn or its all-clear after a working title blip', () => {
     const dispatchCompletion = vi.fn()
     const dispatchHookLifecycle = vi.fn()
     const coordinator = createAgentCompletionCoordinator({
@@ -1308,6 +1308,15 @@ describe('agent completion coordinator', () => {
     vi.advanceTimersByTime(2_000)
     coordinator.observeTitleWorking()
 
+    coordinator.observeHookStatus({
+      state: 'working',
+      prompt: 'review the PR',
+      agentType: 'claude',
+      stateStartedAt: 1_700_000_000_000,
+      turnCompletedAt: 1_700_000_005_000
+    })
+    expect(dispatchCompletion).toHaveBeenCalledTimes(1)
+
     coordinator.observeHookStatus({
       state: 'done',
       prompt: 'review the PR',

src/renderer/src/components/terminal-pane/agent-completion-coordinator.ts

@@ -832,7 +832,11 @@ export function createAgentCompletionCoordinator(
         : undefined
       if (turnCompletedAt !== undefined) {
         // Why: Claude's lead Stop already ended the turn; the pane stays `working` only for background inventory. Announce now, keep lifecycle on the reported working row.
-        if (workingStatusObserved) {
+        if (
+          workingStatusObserved &&
+          !turnCompletedAtAlreadyNotified(turnCompletedAt) &&
+          lastCompletionIdentity?.lastTurnCompletedAtNotified !== turnCompletedAt
+        ) {
           const completionSnapshot: AgentCompletionStatusSnapshot = {
             ...payload,
             state: 'done',