- Queue multiple orders per unit by holding CTRL (matching original game)
- Draw colored waypoint chains on the minimap/world for each queued order
- Display queued order count in selection detail panel
- Limit queue overlay to MAX_QUEUE_LINES to avoid clutter in large selections
- Use distinct colors per order type (move, attack, patrol, build, etc.)
- Update hint text and placement UI to mention queueing behavior
- Add verification tests for queue append/replace semantics, consumption order,
and queued build orders
