ci: address review feedback for Windows CI unification

- Rewrite ci-workflow.spec.ts to assert new single-job native Windows topology
- Remove check:windows-wine from root AGENTS.md command list
- Archive 2026-08-08-native-windows-pull-request-ci (dual-lane topology
  superseded) with Archived: metadata and inbound-link updates
- Update cross-references in serial-cross-platform-ci-reference,
  portable-required-pull-request-ci, and pnpm-action-setup notes
- Add Windows pool coverage to the failover runbook (EN + zh)
- Remove dead wine-windows-gates.sh
- Remove unnecessary Playwright Chromium install from serial-windows
- Fix .github/AGENTS.md windows-* label wording
- Fix PR description before-state accuracy

AGENTS.md

@@ -69,7 +69,6 @@ pnpm run typecheck
 pnpm run lint
 pnpm run duplication    # cross-file TypeScript clone detection
 pnpm run build          # tsc emits lib/types, tsdown bundles runtime
-pnpm run check:windows-wine  # ONLY when diagnosing a known Windows failure (needs wine); CI owns this signal
 pnpm run hygiene        # knip + publint + workspace constraints + NodeNext consumer check
 pnpm run doc-sync       # all documentation gates; leaf list in scripts/run-gates.ts
 pnpm run website:build  # VitePress build (doubles as dead-link check)