Wrong Yellow Matrix V1.1

- A split impulse discovered from any of its four macrocells now queues all four macrocells.
- Connected collinear impulses and perpendicular crossing impulses are recursively queued once per cell.
- Remote pending cells keep only their centre chunk force-loaded.
- The active builder force-loads only its local 128-block strip(s), then releases them at completion.
- Builder cadence: one placement step every two ticks.
- The deterministic matrix and matrix_version remain unchanged.
