2026.10.1

Fixed

• Schedules are evaluated in the schedule's timezone. Previously the calendar day was taken from now in whatever timezone it was passed, so a Berlin schedule like 00:01–01:00 checked with a UTC timestamp resolved to the previous day and never became active (trackIT-Systems/wittypi4#9).
• Without an explicit tz, the system timezone is now used including its DST rules (from TZ, else /etc/localtime). Previously the fixed UTC offset at construction time was used, so long-running processes were off by one hour after a DST change.

Added

• local_tz() to resolve the system timezone with its DST rules.
• This changelog.
• Tests for all sun events (dawn, sunrise, noon, sunset, dusk) and offset formats, DST transitions, and consistency of prev_*/next_*/active(); 100% line and branch coverage.
• Known bugs are documented as expected-failure tests: skip_days gap at the turn of the year, active() with a naive datetime, unparseable times resolving to midnight, RecursionError for large skip_days, and unvalidated negative skip_days.

Changed

• Docstring examples are run as doctests.
• CI runs on every push and tests Python 3.11–3.14.
• Releases are created by CI on tag push: tests run first, then the package is built and attached to a GitHub release with the notes from this changelog.