v0.5.0

Shabbat timers.

• New Shabbat timers tab in the panel: turn devices on / off around candle lighting and havdalah, or at a time on each holy day (every day / first / last / Erev); applies to Shabbat, Yom Tov and / or Yom Kippur; multi-day Chag + Shabbat handled as one stretch.
• Conditions per timer (Home Assistant conditions, checked when it fires), profiles with an active-profile select (new profile can copy another), duplicate, presets (hot plate, urn, evening / morning lights, AC), run now.
• Preview (dry run) of the next Shabbat / Chag with exact times, before-candle-lighting / after-havdalah marks and conflict reports; history of the last 100 runs.
• Fires once and never fights a manual change; after a restart, actions up to 10 minutes late still run, older ones are logged as missed.
• Entities: switch.good_days_shabbat_timers, switch.good_days_skip_next_shabbat_or_chag, select.good_days_timer_profile, sensor.good_days_next_timer_action.
• Changing timers needs an admin; everyone can see them.
• Source files now use escape sequences for bidi isolates (they held the invisible characters); a test enforces it.