test_maint10.py part 10: at two inverters both packs get the site zone, the real Controller is identical for 11 UTC and 13 Brussels, and two due packs across 24/25 Oct 2026 and 27/28 Mar 2027 start at the local hour on successive days; a pack freed in the repeated hour does not start there. Part 3 adds 28 Mar 2027. DOCS: an existing install keeps its saved hour, now read as local time; an hour set to make up for UTC goes back to 19. DECISIONS: the SAFETY-83 gate is met; section on two inverters. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>