diff --git a/packages/skill/skill-office/tests/fixtures/real-office.ts b/packages/skill/skill-office/tests/fixtures/real-office.ts
index 4b24ec867e..6f3d9ab0e9 100644
--- a/packages/skill/skill-office/tests/fixtures/real-office.ts
+++ b/packages/skill/skill-office/tests/fixtures/real-office.ts
@@ -1,5 +1,6 @@
 /** Shared model configuration and context assertions for real Office workflows. */
 import { expect } from 'vitest'
+import type { ImageBlock } from '@deepseek-ai/dsh-llm'
 import { Session, SessionId, type SessionEvent } from '@deepseek-ai/dsh-session'
 
 /** @returns Model provider patches for the configured development or official API. */
@@ -52,6 +53,19 @@ export function officeCalls(events: readonly SessionEvent[]): OfficeCall[] {
   })
 }
 
+/**
+ * Collect images displayed during an Office task.
+ * @param events - Recorded task events.
+ * @returns Images in successful tool results and PTC additional context, excluding private dispatch output.
+ */
+export function officeImages(events: readonly SessionEvent[]): ImageBlock[] {
+  return events.flatMap((event) => {
+    const content = event.type === 'tool/result' && !event.data.message.isError ? event.data.message.content
+      : event.type === 'user/message' && event.data.source.kind === 'ptc-mode' ? event.data.content : []
+    return content.filter(block => block.type === 'image')
+  })
+}
+
 /**
  * Reject recorded Office render calls and the "Render the saved deliverable" instruction.
  * @param events - Recorded task events, including nested skill and shell results.
diff --git a/packages/skill/skill-office/tests/render-context.spec.ts b/packages/skill/skill-office/tests/render-context.spec.ts
index 9a22c46612..e9269aa217 100644
--- a/packages/skill/skill-office/tests/render-context.spec.ts
+++ b/packages/skill/skill-office/tests/render-context.spec.ts
@@ -1,8 +1,34 @@
 /** Render detection uses recorded tool names, not JSON spelling or quoted skill instructions. */
-import { createUserMessage, ToolCallId } from '@deepseek-ai/dsh-llm'
+import { AttachmentId } from '@deepseek-ai/dsh-attachment'
+import { createToolResultMessage, createUserMessage, ToolCallId } from '@deepseek-ai/dsh-llm'
+import type { ImageBlock } from '@deepseek-ai/dsh-llm'
 import { Session, SessionId } from '@deepseek-ai/dsh-session'
 import { expect, it } from 'vitest'
-import { expectNoRenderContext, officeCalls } from './fixtures/real-office.ts'
+import { expectNoRenderContext, officeCalls, officeImages } from './fixtures/real-office.ts'
+
+it('collects displayed images from native results, inspect output and PTC additional context', () => {
+  const session = Session.create(SessionId('displayed-images'))
+  const image: ImageBlock = { type: 'image', attachment: {
+    attachmentId: AttachmentId(`sha256:${'a'.repeat(64)}`), mediaType: 'image/png', bytes: 64, width: 8, height: 4,
+  } }
+  session.append('tool/ptc-dispatch', {
+    rootCallId: ToolCallId('program'), parentCallId: ToolCallId('program'), subCallId: ToolCallId('program:1'),
+    name: 'office_render', arguments: {}, isError: false, content: [image],
+  })
+  session.append('user/message', createUserMessage({ content: [image], source: { kind: 'user' } }), { surfaceOp: 'append' })
+  session.append('tool/result', { turn: 1, step: 1,
+    message: createToolResultMessage({ callId: ToolCallId('failed'), content: [image], isError: true }),
+  }, { surfaceOp: 'append' })
+  expect(officeImages(session.snapshotEvents())).toEqual([])
+  for (const callId of ['render', 'program']) {
+    session.append('tool/result', { turn: 1, step: 1,
+      message: createToolResultMessage({ callId: ToolCallId(callId), content: [image], isError: false }),
+    }, { surfaceOp: 'append' })
+  }
+  session.append('user/message', createUserMessage({ content: [image], source: { kind: 'ptc-mode' } }), { surfaceOp: 'append' })
+  session.append('user/message', createUserMessage({ content: [{ type: 'text', text: 'image omitted' }], source: { kind: 'ptc-mode' } }), { surfaceOp: 'append' })
+  expect(officeImages(session.snapshotEvents())).toEqual([image, image, image])
+})
 
 it.each([undefined, 2])('rejects a native render with JSON indentation %s', (indent) => {
   const session = Session.create(SessionId('native-render'))
diff --git a/packages/skill/skill-office/tests/render-tools.e2e.ts b/packages/skill/skill-office/tests/render-tools.e2e.ts
index 9091c5e451..08ada06519 100644
--- a/packages/skill/skill-office/tests/render-tools.e2e.ts
+++ b/packages/skill/skill-office/tests/render-tools.e2e.ts
@@ -6,7 +6,7 @@ import { execa } from 'execa'
 import { expect, it } from 'vitest'
 import { runLoaderSmoke } from '@deepseek-ai/dsh-loader-smoke'
 import { parseSessionLog } from '@deepseek-ai/dsh-llm-replay'
-import { expectNoRenderContext, officeCalls, officeModelPatches, officeToolPatches } from './fixtures/real-office.ts'
+import { expectNoRenderContext, officeCalls, officeImages, officeModelPatches, officeToolPatches } from './fixtures/real-office.ts'
 
 const repo = fileURLToPath(new URL('../../../../', import.meta.url))
 const runtime = process.env.DSH_PRIMARY_RUNTIME
@@ -63,12 +63,7 @@ it.skipIf(!process.env.DEEPSEEK_API_KEY || !runtime).each([{ format: 'docx', mod
       })
       const renders = officeCalls(events).filter(call => call.name === 'office_render')
       expect(renders.length, JSON.stringify(calls)).toBeGreaterThan(0)
-      const imageCallIds = new Set(mode === 'native' ? renders.map(call => call.callId)
-        : events.flatMap(event => event.type === 'tool/call' && event.data.name === 'run_code' ? [event.data.callId] : []))
-      const images = events.some(event => event.type === 'tool/result'
-        && imageCallIds.has(event.data.message.toolCallId) && !event.data.message.isError
-        && event.data.message.content.some(block => block.type === 'image'))
-      expect(images, JSON.stringify(calls)).toBe(true)
+      expect(officeImages(events).length, JSON.stringify(calls)).toBeGreaterThan(0)
     },
   })
 })
diff --git a/packages/skill/skill-office/tests/xlsx-validation.e2e.ts b/packages/skill/skill-office/tests/xlsx-validation.e2e.ts
index 7aa581b2d4..7e147a02c4 100644
--- a/packages/skill/skill-office/tests/xlsx-validation.e2e.ts
+++ b/packages/skill/skill-office/tests/xlsx-validation.e2e.ts
@@ -9,7 +9,7 @@ import { runLoaderSmoke } from '@deepseek-ai/dsh-loader-smoke'
 import { readImageFile } from '@deepseek-ai/dsh-attachment-local'
 import { parseSessionLog } from '@deepseek-ai/dsh-llm-replay'
 import type { SessionEvent } from '@deepseek-ai/dsh-session'
-import { expectNoRenderContext, officeCalls, officeModelPatches, officeToolPatches } from './fixtures/real-office.ts'
+import { expectNoRenderContext, officeCalls, officeImages, officeModelPatches, officeToolPatches } from './fixtures/real-office.ts'
 
 const repo = fileURLToPath(new URL('../../../../', import.meta.url))
 const assetRoot = fileURLToPath(new URL('../assets/', import.meta.url))
@@ -138,9 +138,7 @@ else:
 `], { cwd })
         expect(verified.exitCode).toBe(0)
         if (kind === 'formula') expect(officeCalls(events).some(call => call.name === 'office_recalculate')).toBe(true)
-        const imageBlocks = events.flatMap(event => event.type === 'tool/result' && !event.data.message.isError
-          ? event.data.message.content.filter(block => block.type === 'image') : [])
-        for (const block of imageBlocks) {
+        for (const block of officeImages(events)) {
           const stored = await readImageFile(join(imageRoot, 'attachments/v1'), block.attachment)
           const pixels = await execa(python!, ['-c', previewPixels], { input: Buffer.from(stored.data) })
           previewHasContent ||= pixels.stdout === 'content'
@@ -164,17 +162,6 @@ else:
       expect(office.some(call => call.name === 'office_render' && 'sheet' in call.args && 'range' in call.args), diagnostic).toBe(true)
       expect(office.some(call => call.name === 'office_convert'), diagnostic).toBe(false)
       const reads = calls.filter(call => call.name === 'office_render')
-      const results = events.flatMap(event => event.type === 'tool/result' ? [event.data.message] : [])
-      if (previewHasContent) {
-        expect(reads.length).toBeGreaterThan(0)
-        const visibleImage = mode === 'native'
-          ? results.some(result => !result.isError && reads.some(call => call.callId === result.toolCallId)
-            && result.content.some(block => block.type === 'image'))
-          : results.some(result => !result.isError
-            && calls.some(call => call.name === 'run_code' && call.callId === result.toolCallId)
-            && result.content.some(block => block.type === 'image'))
-        expect(visibleImage).toBe(true)
-      }
       if (!previewHasContent) {
         const answer = events.findLast(event => event.type === 'assistant/message')
         if (answer?.type !== 'assistant/message') throw new Error('Agent did not finish with an answer')