Wrong Yellow Matrix V2.3 — clean network builder

- Corrects the +48-block segment/cap mismatch: every macrocell split now spans offsets -64..+63 around its centre.
- Force-loads remote component cells before creating their markers.
- Treats one connected fence component as an atomic job: no unrelated well or monoroom starts before it is complete.
- Gives network cells strict queue priority.
- Builds only the axes encoded by the fence; EW-only cells no longer execute the NS builder.
- Builds each 16x48x8 slice every two ticks, top to bottom, with centre-out chunk order.
- Keeps the source NBT invisible (compiled cache; no roof placement).
- Resets diagnostics per reload and reports live counts rather than a list of Marker names.
- Repairs the 3x3 spawn hub after materializing macrocell 0,0.
