v0.1.0

Added

• The unified-api web UI (apps/unified-api): an overview of what needs
  attention, sources with their groups, hosts and variables, endpoints,
  projects, credentials, the federation topology, metrics charts sampled from
  /metrics, and the configuration. Host search from every page (/ or
  Ctrl+K). Light, dark or system theme. Pages an API key may not read are left
  out of the menu.
• Sign-in through unified-api's own login page (API key or LDAP); writes carry
  the session's CSRF token and retry once if the session changed.
• @opusprojects/unified-ui: the shared visual components (app shell, cards,
  health pills and summaries, charts, tree, pagination, code view, theme
  switch) and the --uu-* design tokens.
• @opusprojects/unified-client: the shared non-visual pieces (the session
  middleware for openapi-fetch, health states, Prometheus parsing and an
  in-browser metrics sampler, the stored theme).
• End-to-end tests with Playwright against a mocked API (npm run test:e2e).
• A demo image: the built UI behind nginx, forwarding to a unified-api.
• Requires unified-api 0.34.0 or later, which also serves this UI itself.