diff --git a/api/server/services/Endpoints/agents/initialize.spec.js b/api/server/services/Endpoints/agents/initialize.spec.js
index 927291b6b1..66335332ef 100644
--- a/api/server/services/Endpoints/agents/initialize.spec.js
+++ b/api/server/services/Endpoints/agents/initialize.spec.js
@@ -49,6 +49,7 @@ const mockArtifactToolEndCallback = jest.fn();
 jest.mock('~/server/controllers/agents/callbacks', () => ({
   createToolEndCallback: jest.fn(() => mockArtifactToolEndCallback),
   createAttachmentEmitter: jest.fn(() => jest.fn()),
+  createPtcProgressEmitter: jest.fn(() => jest.fn()),
   createBackgroundCodeResultHandler: jest.fn(() => jest.fn()),
   getDefaultHandlers: jest.fn((opts) => {
     capturedDefaultHandlerOptions = opts;
@@ -206,6 +207,7 @@ describe('initializeClient — processAgent ACL gate', () => {
   it('threads the owning job epoch into resumable event handlers', async () => {
     const {
       createAttachmentEmitter,
+      createPtcProgressEmitter,
       createToolEndCallback,
     } = require('~/server/controllers/agents/callbacks');
     mockInitializeAgent.mockResolvedValue(makePrimaryConfig([]));
@@ -237,6 +239,13 @@ describe('initializeClient — processAgent ACL gate', () => {
       streamId: 'conv_1',
       jobCreatedAt: 1234,
     });
+    /** The PTC trace emitter is generation-fenced like every other resumable
+     *  emitter; a stale epoch would leak one run's inner calls into the next. */
+    expect(createPtcProgressEmitter).toHaveBeenCalledWith({
+      res: {},
+      streamId: 'conv_1',
+      jobCreatedAt: 1234,
+    });
 
     mockLoadToolsForExecution.mockResolvedValue({ loadedTools: [], configurable: {} });
     await capturedToolExecuteOptions.loadTools([], PRIMARY_ID);
diff --git a/client/src/components/Chat/Messages/Content/Parts/PtcToolTrace.tsx b/client/src/components/Chat/Messages/Content/Parts/PtcToolTrace.tsx
index 4567bd984a..50ad9273a2 100644
--- a/client/src/components/Chat/Messages/Content/Parts/PtcToolTrace.tsx
+++ b/client/src/components/Chat/Messages/Content/Parts/PtcToolTrace.tsx
@@ -4,8 +4,8 @@ import { isReportableRunStepDuration } from 'librechat-data-provider';
 import type { TranslationKeys } from '~/hooks';
 import type { PtcTraceEntry } from '~/store';
 import { cn, parseToolName, getRunStepDurationLabels } from '~/utils';
-import { ptcTraceByToolCallId, ptcTraceKey } from '~/store';
 import { useMessageContext } from '~/Providers/MessageContext';
+import { ptcTraceByToolCallId, ptcTraceKey } from '~/store';
 import { useMCPServerNames } from '~/hooks/MCP';
 import { useLocalize } from '~/hooks';
 
diff --git a/packages/api/src/agents/handlers.ts b/packages/api/src/agents/handlers.ts
index f7c89e20bc..00d440aab6 100644
--- a/packages/api/src/agents/handlers.ts
+++ b/packages/api/src/agents/handlers.ts
@@ -14,8 +14,8 @@ import type {
   SubagentTaskConfig,
 } from '@librechat/agents';
 import type { StructuredToolInterface } from '@librechat/agents/langchain/tools';
-import type { ValidationIssue } from '@librechat/data-schemas';
 import type { CodeEnvRef, PtcToolCallEvent } from 'librechat-data-provider';
+import type { ValidationIssue } from '@librechat/data-schemas';
 import type { SkillFileRecord, PrimeSkillFilesResult } from './skillFiles';
 import type { CodeExecutionContext } from './execution';
 import type { TextContentFragment } from '~/protection';