diff --git a/.github/workflows/ssh-windows-hosts.yml b/.github/workflows/ssh-windows-hosts.yml
index 82fcb984f55..282dc3785fe 100644
--- a/.github/workflows/ssh-windows-hosts.yml
+++ b/.github/workflows/ssh-windows-hosts.yml
@@ -87,9 +87,29 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
+  mobile_web_bundle:
+    if: github.event_name != 'pull_request' || github.event.pull_request.draft != true
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          persist-credentials: false
+      - uses: ./.github/actions/install-node-dependencies
+      - uses: ./.github/actions/build-mobile-web-bundle
+      - uses: actions/upload-artifact@v7
+        with:
+          name: ${{ format('ssh-windows-mobile-web-{0}', github.sha) }}
+          path: out/mobile-web/
+          if-no-files-found: error
+          retention-days: 1
+          overwrite: true
+
   hosts:
-    # A draft carries no verdict; readiness re-triggers this workflow.
-    if: ${{ github.event_name != 'pull_request' || github.event.pull_request.draft != true }}
+    needs: mobile_web_bundle
+    if: >-
+      ${{ !cancelled() && needs.mobile_web_bundle.result == 'success' &&
+      (github.event_name != 'pull_request' || github.event.pull_request.draft != true) }}
     strategy:
       fail-fast: false
       matrix:
@@ -166,7 +186,18 @@ jobs:
       - uses: ./.github/actions/prepare-windows-cli-launcher
         with:
           arches: ${{ matrix.arch }}
+      - uses: actions/download-artifact@v8
+        id: mobile-bundle
+        continue-on-error: true
+        with:
+          name: ${{ format('ssh-windows-mobile-web-{0}', github.sha) }}
+          path: out/mobile-web/
+      # A failed-only retry may outlive the producer artifact's retention.
       - uses: ./.github/actions/build-mobile-web-bundle
+        if: steps.mobile-bundle.outcome != 'success'
+      - name: Verify the mobile bundle before staging it
+        shell: bash
+        run: node -e "require('./config/scripts/verify-packaged-mobile-web-bundle.cjs').assertMobileWebBundleBuilt()"
       - name: Build the win32 template
         shell: bash
         env:
diff --git a/config/scripts/ssh-windows-mobile-bundle.test.mjs b/config/scripts/ssh-windows-mobile-bundle.test.mjs
new file mode 100644
index 00000000000..5c6875029fd
--- /dev/null
+++ b/config/scripts/ssh-windows-mobile-bundle.test.mjs
@@ -0,0 +1,103 @@
+import { copyFileSync, mkdirSync, mkdtempSync, readFileSync, rmSync, writeFileSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { runProcessSync } from '@orca/process-host'
+import { expect, it } from 'vitest'
+import { parse } from 'yaml'
+import { compileAggregateExpression } from './pr-aggregate-gate-context.mjs'
+import { writeMobileWebBundleFixtureTree } from './mobile-web-bundle-fixture-tree.mjs'
+
+const workflow = parse(readFileSync('.github/workflows/ssh-windows-hosts.yml', 'utf8'))
+const producer = workflow.jobs.mobile_web_bundle
+const consumer = workflow.jobs.hosts
+const upload = producer.steps.find((step) => step.uses?.startsWith('actions/upload-artifact'))
+const download = consumer.steps.find((step) => step.id === 'mobile-bundle')
+const fallback = consumer.steps.find(
+  (step) => step.uses === './.github/actions/build-mobile-web-bundle'
+)
+const verify = consumer.steps.find(
+  (step) => step.name === 'Verify the mobile bundle before staging it'
+)
+
+it('binds the bundle to the same run and source across architectures and retry attempts', () => {
+  expect(producer['runs-on']).toBe('ubuntu-latest')
+  for (const job of [producer, consumer]) {
+    expect(
+      job.steps.find((step) => step.uses?.startsWith('actions/checkout')).with.ref
+    ).toBeUndefined()
+  }
+  expect(download.with['run-id']).toBeUndefined()
+  expect(download.with.repository).toBeUndefined()
+  const name = compileAggregateExpression(upload.with.name, ['github'])
+  const requested = compileAggregateExpression(download.with.name, ['github'])
+  for (const sha of ['a'.repeat(40), 'b'.repeat(40)]) {
+    const first = { github: { sha, run_attempt: 1 } }
+    const retry = { github: { sha, run_attempt: 2 } }
+    expect(name(first).coerceString()).toBe(requested(retry).coerceString())
+    expect(name(first).coerceString()).toContain(sha)
+  }
+  expect(upload.with.overwrite).toBe(true)
+  expect(upload.with.path).toBe(download.with.path)
+})
+
+it.each(['success', 'failure', 'cancelled', 'skipped', ''])(
+  'admits Windows hosts only after a successful producer: %s',
+  (result) => {
+    const eligible = compileAggregateExpression(consumer.if, ['github', 'needs'])
+    const value = {
+      github: { event_name: 'pull_request', event: { pull_request: { draft: false } } },
+      needs: { mobile_web_bundle: { result } }
+    }
+    expect(consumer.needs).toBe('mobile_web_bundle')
+    expect(eligible(value).coerceString()).toBe(String(result === 'success'))
+    expect(eligible(value, true).coerceString()).toBe('false')
+  }
+)
+
+it.each(['success', 'failure', 'skipped', ''])(
+  'rebuilds locally only when the artifact is unavailable: %s',
+  (outcome) => {
+    const eligible = compileAggregateExpression(fallback.if, ['steps'])
+    expect(eligible({ steps: { 'mobile-bundle': { outcome } } }).coerceString()).toBe(
+      String(outcome !== 'success')
+    )
+    expect(download['continue-on-error']).toBe(true)
+    expect(fallback['continue-on-error']).toBeUndefined()
+    expect(verify['continue-on-error']).toBeUndefined()
+    const template = consumer.steps.findIndex((step) =>
+      step.run?.includes('build-orcad-template.mjs')
+    )
+    expect(consumer.steps.indexOf(download)).toBeLessThan(consumer.steps.indexOf(fallback))
+    expect(consumer.steps.indexOf(fallback)).toBeLessThan(consumer.steps.indexOf(verify))
+    expect(consumer.steps.indexOf(verify)).toBeLessThan(template)
+  }
+)
+
+it.skipIf(process.platform === 'win32')(
+  'executes the consumer verifier without mobile dependencies and rejects corrupt assets',
+  async () => {
+    const directory = mkdtempSync(join(tmpdir(), 'ssh-mobile-bundle-'))
+    try {
+      mkdirSync(join(directory, 'config', 'scripts'), { recursive: true })
+      for (const file of [
+        'config/dark-build-switches.cjs',
+        'config/scripts/verify-packaged-mobile-web-bundle.cjs'
+      ]) {
+        copyFileSync(file, join(directory, file))
+      }
+      const bundleDir = join(directory, 'out', 'mobile-web')
+      await writeMobileWebBundleFixtureTree({ outDir: bundleDir })
+      const execute = () =>
+        runProcessSync({
+          program: 'bash',
+          args: ['-e', '-o', 'pipefail', '-c', verify.run],
+          cwd: directory
+        })
+      expect(execute().code).toBe(0)
+      writeFileSync(join(bundleDir, 'index.html'), 'corrupt')
+      expect(execute().code).not.toBe(0)
+    } finally {
+      rmSync(directory, { recursive: true, force: true })
+    }
+  }
+)