Tier 3f: split the selection panel's derived state out of its DOM

Tier 2a: collapse the cross-module duplicates, pin the tie-breaks

Widen idle and formation unit spacing by 20%

Range-layered formation ranks and per-building logistics priority

Let a player promote any selected unit to formation leader with Ctrl+click

Make formation spacing 15% more coarse

Redefine formation leader as first-selected unit, add persistent follow, speed cap, and drag-to-face

Formation shapes, leader positioning, and nested formations for grouped units