v0.10.1

Added

• One-command local demo: docker compose -f docker-compose.demo.yml up brings the
  app up on http://localhost:8000 with a seeded admin and no setup wizard, for
  trying it out before a full install. Demo only — plain HTTP, DEBUG=true, and
  hard-coded throwaway secrets; not for production. See README → Quick demo.

Fixed

• Infinite scroll in unread/label views could stop early or silently skip articles
  when rows were marked read while scrolling (the unread set shrank under the
  numeric page offset). The article list now uses keyset (cursor) pagination, so
  scrolling reliably loads every remaining article regardless of mark-read-on-scroll.
• Mobile: the active tab in the horizontal side-nav strip now scrolls into view on
  load, instead of staying off-screen when the strip was left scrolled elsewhere.
• Docker: the db healthcheck now probes the actual database (pg_isready -d),
  so a DB_USER that differs from DB_NAME no longer logs a Postgres FATAL on
  every check.