v2.12.0

Added

• clear_day now appears in the Home Assistant UI with a name, description and
  date picker. It was registered in code but missing from services.yaml, so it
  could only be called by the card or from YAML.
• Every service now offers the entry_prefix field in the UI. All nine accepted
  it already, but five did not declare it — which is exactly the field you need
  on a multi-instance setup.

Fixed

• Service translations listed export_history, which does not exist, and were
  missing four services that do. All nine are now present in English and Swedish.

Changed

• Documentation split up. The README is now a short introduction and install
  guide; the reference material moved to docs/ — configuration, the card,
  entities, services, day types, Google Sheets and troubleshooting.
• Documented the four day types that were never written down (home,
  vacation, red_day, squeeze_day), the set_period service, day splitting
  via top-up, and the six configuration settings added since 2.9.0.
• Releases are now published automatically when the manifest version changes, so
  HACS shows an update with the changelog section as its notes.
• Commit messages follow Conventional Commits, enforced in CI. See
  CONTRIBUTING.md.