feat(promotion): improve promotion review dashboard

[dongmucat]

Summary

• enrich pending promotion review cards with skill metadata, submitter, package size, downloads, and stars
• keep approved/rejected views as tables and add reviewed-time sorting from the table header
• extend promotion list API with status and reviewedAt sort params, plus OpenAPI/generated client updates
• add backend, frontend unit, and Playwright E2E coverage for sorting and enriched pending data

Validation

• make typecheck-web
• make lint-web
• make test-frontend
• make test-backend-app
• cd web && pnpm exec playwright test e2e/promotions-review.spec.ts
• NO_PROXY=localhost,127.0.0.1,::1 no_proxy=localhost,127.0.0.1,::1 make test-e2e-frontend
• make staging: backend image/frontend build/server healthy passed; local ~/Documents bind mount blocked nginx template read, so web health + smoke test were completed with a temporary /tmp mount override. Smoke result: 15 passed, 0 failed.