chore(ci): drop the disabled timing-summary job and unread build outputs

Two pieces of dead workflow surface, found auditing where CI time goes:

- ci-timings-summary was hard-disabled (`if: ${{ false && ... }}`) with a
  TODO to re-enable or delete it after the next timing-optimization
  review. That review happened; the local `pnpm ci:timings` helper is what
  we actually use, and docs already pointed there. The job carried a
  25-entry needs list that had to be kept in sync to stay lintable.
- build-artifacts exported four `*-result` outputs that no job or workflow
  reads.

Removing the job lets the gate guard assert the stronger invariant it
wanted all along: ci-gate needs *every* job in the file, so a new lane
cannot slip in ungated (28 jobs, 27 gated, zero exceptions).

No runtime behavior changes: the job could never run and the outputs had
no consumers. Also audited every `pnpm <script>` and `node scripts/...`
reference in ci.yml for rot -- all resolve.

.github/workflows/ci.yml

@@ -1237,11 +1237,6 @@ jobs:
     # cores for roughly the same billed core-minutes.
     runs-on: ${{ vars.OPENCLAW_CI_RUNNER_BACKEND == 'github' && 'ubuntu-24.04' || (vars.OPENCLAW_CI_RUNNER_BACKEND == 'hybrid' && github.run_attempt > 1) && 'ubuntu-24.04' || github.event_name == 'workflow_dispatch' && 'ubuntu-24.04' || (github.repository == 'openclaw/openclaw' && (github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == 'openclaw/openclaw') && 'blacksmith-32vcpu-ubuntu-2404' || 'ubuntu-24.04') }}
     timeout-minutes: ${{ (vars.OPENCLAW_CI_RUNNER_BACKEND == 'github' || (vars.OPENCLAW_CI_RUNNER_BACKEND == 'hybrid' && github.run_attempt > 1) || (github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name != github.repository)) && 35 || 20 }}
-    outputs:
-      channels-result: ${{ steps.built_artifact_checks.outputs['channels-result'] }}
-      core-support-boundary-result: ${{ steps.built_artifact_checks.outputs['core-support-boundary-result'] }}
-      gateway-watch-result: ${{ steps.built_artifact_checks.outputs['gateway-watch-result'] }}
-      tui-pty-result: ${{ steps.built_artifact_checks.outputs['tui-pty-result'] }}
     steps:
       - *linux_node_checkout_step
       - name: Ensure secrets base commit (PR fast path)
@@ -4172,60 +4167,3 @@ jobs:
           done <<< "$SELECTED_RESULTS"
 
           exit "$failures"
-
-  ci-timings-summary:
-    permissions:
-      actions: read
-      contents: read
-    name: ci-timings-summary
-    needs:
-      - preflight
-      - security-fast
-      - pnpm-store-warmup
-      - build-artifacts
-      - checks-ui
-      - checks-ui-e2e
-      - checks-ui-e2e-real-gateway
-      - control-ui-i18n
-      - checks-fast-core
-      - checks-fast-plugin-contracts-shard
-      - checks-fast-channel-contracts-shard
-      - checks-node-compat
-      - checks-node-core-test-nondist-shard
-      - check-shard
-      - check-lint-hosted-core-shard
-      - check-additional-shard
-      - check-docs
-      - skills-python
-      - checks-windows
-      - macos-node
-      - macos-swift
-      - ios-build
-      - android
-    # TODO(2026-10-01): Re-enable or delete the CI timing-summary job after the next timing-optimization review.
-    if: ${{ false && !cancelled() && always() && github.event_name != 'push' && (github.event_name != 'pull_request' || !github.event.pull_request.draft) }}
-    runs-on: ubuntu-24.04
-    timeout-minutes: 5
-    steps:
-      - name: Checkout timing summary helper
-        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
-        with:
-          ref: ${{ github.event_name == 'pull_request' && github.event.pull_request.base.sha || needs.preflight.outputs.checkout_revision || github.sha }}
-          fetch-depth: 1
-          fetch-tags: false
-          persist-credentials: false
-          submodules: false
-
-      - name: Write CI timing summary
-        env:
-          GH_TOKEN: ${{ github.token }}
-        run: |
-          node scripts/ci-run-timings.mjs "$GITHUB_RUN_ID" --limit 25 > ci-timings-summary.txt
-          cat ci-timings-summary.txt >> "$GITHUB_STEP_SUMMARY"
-
-      - name: Upload CI timing summary
-        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7
-        with:
-          name: ci-timings-summary
-          path: ci-timings-summary.txt
-          retention-days: 14