Test fail-closed sharing against older backends

docs/post-1.9.0-progress-20261006.md

@@ -425,3 +425,11 @@ backend result or the archived dashboard build, and are not deployed. The runnin
 The operator-funded wallets remain untouched in this pass. The private ledger
 retains the 25-sat inclusive test cap and zero spent. Deployment coordination and
 the durable payment recovery gates above remain open.
+
+Qualification follow-up: the atomic endpoint change passed five focused UI tests
+and `vue-tsc --noEmit`. The added old-server rejection case also passed (six UI
+cases total): no fallback to legacy writes, no success event, and the error stays
+visible. A final rerun corrects a missing required prop in that test fixture.
+Authenticated read-only checks confirm both dev and Yaya have at least 25 Cashu
+sats available. No payment, deployment or release occurred. Backend compilation
+for the atomic sharing suite remains in progress; it is not marked passed.

neode-ui/src/components/cloud/__tests__/SharePublication.test.ts

@@ -23,3 +23,29 @@ it.each([false, true])('publishes one complete policy for an existing share: %s'
   expect(writes[0]?.params).toMatchObject(existing ? { id: 'saved-id' } : { filename: 'film.mp4' })
   wrapper.unmount()
 })
+
+it('keeps a rejected publication open without falling back to unsafe legacy writes', async () => {
+  vi.mocked(rpcClient.call).mockImplementation(async ({ method }) => {
+    if (method === 'content.list-mine') return { items: [] }
+    if (method === 'content.publish') throw new Error('Method not found')
+    return {}
+  })
+  const wrapper = mount(ShareModal, { props: { filename: 'film.mp4', filepath: '/film.mp4', isDir: false } })
+  await flushPromises()
+  const vm = (wrapper.vm as any).$.setupState
+  vm.shared = true
+  vm.accessType = 'paid'
+  vm.priceSats = 1
+  await vm.save()
+  await vi.runAllTimersAsync()
+  expect(vm.errorMsg).toBe('Method not found')
+  expect(vm.successMsg).toBeNull()
+  expect(vm.saving).toBe(false)
+  expect(wrapper.emitted('saved')).toBeUndefined()
+  const methods = vi.mocked(rpcClient.call).mock.calls.map(([call]) => call.method)
+  expect(methods.filter(method => method === 'content.publish')).toHaveLength(1)
+  expect(methods).not.toContain('content.add')
+  expect(methods).not.toContain('content.set-pricing')
+  expect(methods).not.toContain('content.set-availability')
+  wrapper.unmount()
+})