The Nightly Rundown Pipeline

Endpoints:
  GET  /health
  POST /run {"region":"us"}               — regional article (articles_v2)
  POST /generate-cities                   — all 10 US cities
  POST /generate-city/:slug               — single city
  GET  /dry-run?country=us                — test ingestion
  GET  /articles/:region                  — list articles
  GET  /articles/:region/:date/:slug      — single article
  GET  /cities                            — list city articles
  GET  /cities/:slug                      — today's city article
  GET  /cities/:slug/:date                — city article by date
  GET  /rss/:region                       — RSS 2.0 for region
  GET  /rss/local/:slug                   — RSS 2.0 for city
  GET  /sitemap-news.xml                  — Google News sitemap (72h)