diff --git a/apps/desktop/src/app/session/hooks/use-session-actions.test.tsx b/apps/desktop/src/app/session/hooks/use-session-actions.test.tsx
index 2472dccb113..603b45a1a2b 100644
--- a/apps/desktop/src/app/session/hooks/use-session-actions.test.tsx
+++ b/apps/desktop/src/app/session/hooks/use-session-actions.test.tsx
@@ -1307,6 +1307,76 @@ describe('resumeSession warm-cache mapping integrity', () => {
     expect(runtimeIdByStoredSessionIdRef.current.get('stored-A')).toBe('rt-A')
   })
 
+  it('preserves cached image attachments through an idle persisted transcript refresh', async () => {
+    const runtimeIdByStoredSessionIdRef: MutableRefObject<Map<string, string>> = {
+      current: new Map([['stored-A', 'rt-A']])
+    }
+
+    const state = clientState('stored-A')
+    state.messages = [
+      {
+        id: 'cached-user',
+        role: 'user',
+        parts: [{ type: 'text', text: 'describe this image' }],
+        attachmentRefs: ['@image:/tmp/photo.png']
+      },
+      {
+        id: 'cached-assistant',
+        role: 'assistant',
+        parts: [{ type: 'text', text: 'It is a photo.' }]
+      }
+    ]
+
+    const sessionStateByRuntimeIdRef: MutableRefObject<Map<string, ClientSessionState>> = {
+      current: new Map([['rt-A', state]])
+    }
+
+    const persistedMessages = [
+      { content: 'describe this image', role: 'user', timestamp: 1 },
+      { content: 'It is a photo.', role: 'assistant', timestamp: 2 }
+    ]
+
+    vi.mocked(getSessionMessages).mockResolvedValue({
+      messages: persistedMessages,
+      session_id: 'stored-A'
+    } as never)
+
+    const requestGateway = vi.fn(async (method: string) => {
+      if (method === 'session.activate') {
+        return {
+          session_id: 'rt-A',
+          session_key: 'stored-A',
+          resumed: 'stored-A',
+          message_count: persistedMessages.length,
+          messages: persistedMessages,
+          running: false,
+          info: {}
+        } as never
+      }
+
+      return {} as never
+    })
+
+    let resumedState: ClientSessionState | undefined
+    let resume: ((storedSessionId: string, replaceRoute?: boolean) => Promise<unknown>) | null = null
+
+    render(
+      <ResumeHarness
+        onReady={ready => (resume = ready)}
+        onStateUpdate={(_sessionId, next) => (resumedState = next)}
+        requestGateway={requestGateway}
+        runtimeIdByStoredSessionIdRef={runtimeIdByStoredSessionIdRef}
+        sessionStateByRuntimeIdRef={sessionStateByRuntimeIdRef}
+      />
+    )
+    await waitFor(() => expect(resume).not.toBeNull())
+    await resume!('stored-A', true)
+
+    expect(requestGateway.mock.calls.map(([method]) => method)).toContain('session.activate')
+    expect(getSessionMessages).toHaveBeenCalledWith('stored-A', undefined)
+    expect(resumedState?.messages[0]?.attachmentRefs).toEqual(['@image:/tmp/photo.png'])
+  })
+
   it('repairs an idle warm cache from a divergent equal-length persisted transcript', async () => {
     const runtimeIdByStoredSessionIdRef: MutableRefObject<Map<string, string>> = {
       current: new Map([['stored-A', 'rt-A']])
diff --git a/apps/desktop/src/app/session/hooks/use-session-actions/utils.test.ts b/apps/desktop/src/app/session/hooks/use-session-actions/utils.test.ts
index 5c3dc83a6de..6da126b9933 100644
--- a/apps/desktop/src/app/session/hooks/use-session-actions/utils.test.ts
+++ b/apps/desktop/src/app/session/hooks/use-session-actions/utils.test.ts
@@ -317,6 +317,52 @@ describe('reconcileResumeMessages', () => {
     const [out] = reconcileResumeMessages(next, previous)
     expect(out.parts.some(p => p.type === 'reasoning')).toBe(true)
   })
+
+  it('preserves attachment refs for a matching user turn', () => {
+    const next = [msg('stored-user', 'user', 'describe this image')]
+
+    const previous = [
+      msg('live-user', 'user', 'describe this image', {
+        attachmentRefs: ['@image:/tmp/photo.png']
+      })
+    ]
+
+    const [out] = reconcileResumeMessages(next, previous)
+
+    expect(out.attachmentRefs).toEqual(['@image:/tmp/photo.png'])
+  })
+
+  it('does not overwrite attachment refs already present on the resumed message', () => {
+    const next = [
+      msg('stored-user', 'user', 'describe this image', {
+        attachmentRefs: ['@image:/tmp/authoritative.png']
+      })
+    ]
+
+    const previous = [
+      msg('live-user', 'user', 'describe this image', {
+        attachmentRefs: ['@image:/tmp/cached.png']
+      })
+    ]
+
+    const [out] = reconcileResumeMessages(next, previous)
+
+    expect(out.attachmentRefs).toEqual(['@image:/tmp/authoritative.png'])
+  })
+
+  it('does not preserve attachment refs when the user text differs', () => {
+    const next = [msg('stored-user', 'user', 'a different prompt')]
+
+    const previous = [
+      msg('live-user', 'user', 'describe this image', {
+        attachmentRefs: ['@image:/tmp/photo.png']
+      })
+    ]
+
+    const [out] = reconcileResumeMessages(next, previous)
+
+    expect(out.attachmentRefs).toBeUndefined()
+  })
 })
 
 describe('preserveLocalPendingTurnMessages', () => {
diff --git a/apps/desktop/src/app/session/hooks/use-session-actions/utils.ts b/apps/desktop/src/app/session/hooks/use-session-actions/utils.ts
index f7287497bc5..bc5cb6cec3b 100644
--- a/apps/desktop/src/app/session/hooks/use-session-actions/utils.ts
+++ b/apps/desktop/src/app/session/hooks/use-session-actions/utils.ts
@@ -211,6 +211,10 @@ export function reconcileResumeMessages(nextMessages: ChatMessage[], previousMes
 
     if (nextText === previousVisibleText || nextText === previousText.trim()) {
       preserved = preserveReasoningParts(preserved, previous)
+
+      if (message.role === 'user' && preserved.attachmentRefs === undefined && previous.attachmentRefs?.length) {
+        preserved = { ...preserved, attachmentRefs: [...previous.attachmentRefs] }
+      }
     }
 
     const previousImages = embeddedImageUrls(previousText)