- Add repair and rally command buttons with custom glyphs and tooltips
- Refactor bottom command bar into a structured, discoverable grid with
visibility filtering per selection type
- Replace patrol's there-and-back with a circuit-based route system;
CTRL-clicking extends the patrol instead of stacking orders
- Builders guarding structures now repair damage first, then assist
production — assist to producing factories now works correctly
- Add Commander death cascade: nuclear blast, outward vaporization wave,
and screen-wide flash timed to the audio sample
- Introduce `fortification` and `air` armor classes; rebalance weapons,
unit HP, and ranges across the roster
- Remove the static hint line; all commands now have prompts and button
tooltips instead
- Add verification tests for patrol routes, guarding builders, vaporised
entity rendering, and the full command bar