GENERAL! September 12, 2026 GENERAL! Day 1 Iteration 12b

Simultaneous Tile Vacancies

Friendly-occupied tiles may now be selected as provisional movement destinations.
The move succeeds when the occupying formation successfully vacates during the same resolution.
Movement chains and direct swaps resolve simultaneously without clipping or false blocking.
If any formation cannot vacate, the blockage propagates backward through every dependent move.
Shared destination tiles remain forbidden.
Added controller and resolver regression coverage plus a deterministic two-unit vacancy-chain preview.